PostgreSQL is the world's most advanced, powerful, and efficient open source relational database management system, and some of the world’s most demanding applications rely on PostgreSQL as their primary database management system. PostgreSQL is known for its accuracy, security, and scalability. A PostgreSQL Developer creates ways to store corporate data in a reliable, secure, and efficient way. They can create scalable databases using these technologies - this means that a PostgreSQL Developer can help you keep up with the ever increasing demand for larger amounts of data. They can also develop applications to read from and write to these databases and optimize existing databases for better performance.

Compared to other database management systems, PostgreSQL boasts superior performance, reliability and security. This Database Management System is also renowned for its extensibility, meaning that it allows developers to customize their databases according to the exact needs of their application and load requirements - whether it's a simple web application or huge enterprise scale solutions.

Here's some projects our expert PostgreSQL Developer made real:

  • Developing unique solutions with Odoo Manufacturing & Maintenance Module
  • Connecting web applications with secure REST API integrations
  • Creating data extraction scripts with Nodejs
  • Developing complex SaaS solutions with Laravel/React/AWS
  • Implementing advanced authentication protocols (JWT)
  • Truckloads of migration projects from different AWS stacks & SSO integrations
  • Developing automation & no-code project pipelines leveraging nodejs and python
  • Building serverless Java applications with Springboot and other frameworks
  • Publishing/Hosting express.js & handlebars.js web apps

PostgreSQL technology has been a go-to solution for many clients when creating bespoke applications that meet the needs of their business. Our PostgreSQL Developers have built everything from small custom applications to complex enterprise solutions on Freelancer.com. You too can hire an expert developer here today to make your project happen!

Von 94,244 Bewertungen, bewerten Kunden unsere PostgreSQL Developers 4.9 von 5 Sternen.
PostgreSQL Developers anheuern

PostgreSQL is the world's most advanced, powerful, and efficient open source relational database management system, and some of the world’s most demanding applications rely on PostgreSQL as their primary database management system. PostgreSQL is known for its accuracy, security, and scalability. A PostgreSQL Developer creates ways to store corporate data in a reliable, secure, and efficient way. They can create scalable databases using these technologies - this means that a PostgreSQL Developer can help you keep up with the ever increasing demand for larger amounts of data. They can also develop applications to read from and write to these databases and optimize existing databases for better performance.

Compared to other database management systems, PostgreSQL boasts superior performance, reliability and security. This Database Management System is also renowned for its extensibility, meaning that it allows developers to customize their databases according to the exact needs of their application and load requirements - whether it's a simple web application or huge enterprise scale solutions.

Here's some projects our expert PostgreSQL Developer made real:

  • Developing unique solutions with Odoo Manufacturing & Maintenance Module
  • Connecting web applications with secure REST API integrations
  • Creating data extraction scripts with Nodejs
  • Developing complex SaaS solutions with Laravel/React/AWS
  • Implementing advanced authentication protocols (JWT)
  • Truckloads of migration projects from different AWS stacks & SSO integrations
  • Developing automation & no-code project pipelines leveraging nodejs and python
  • Building serverless Java applications with Springboot and other frameworks
  • Publishing/Hosting express.js & handlebars.js web apps

PostgreSQL technology has been a go-to solution for many clients when creating bespoke applications that meet the needs of their business. Our PostgreSQL Developers have built everything from small custom applications to complex enterprise solutions on Freelancer.com. You too can hire an expert developer here today to make your project happen!

Von 94,244 Bewertungen, bewerten Kunden unsere PostgreSQL Developers 4.9 von 5 Sternen.
PostgreSQL Developers anheuern

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    79 Jobs gefunden

    Project Overview We are building a Smart Google Review Management System that uses QR codes to help businesses collect more positive Google reviews while capturing negative feedback privately. When a customer scans a QR code: 4–5 rating → Redirect to Google Review page 1–3 rating → Private feedback form This is an MVP SaaS product, designed to be scalable for future features like AI sentiment analysis and white-labeling. Scope of Work (MVP) Customer Flow (Mobile-friendly): QR code scan → rating page (stars or emojis) Conditional redirect logic Private feedback form Thank-you page Admin Dashboard: Secure login Add/manage businesses Store Google review links Generate & download QR codes View feedback & basic analytics (scans, ratings) Tech...

    €1869 Average bid
    €1869 Gebot i.D.
    12 Angebote

    Fix & Improve Existing NestJS + PostgreSQL + Redis + React Native Project Hello I’m looking for an experienced full-stack developer to help me fix, refactor, and improve my existing project built with NestJS, PostgreSQL, Redis, and React Native. The project is already developed, but it currently has bugs, unfinished logic, and stability issues. I need someone who can understand existing code, fix problems, and make the system stable and production-ready. Tech Stack: Backend: NestJS Database: PostgreSQL Caching / Queue: Redis Mobile App: React Native API: REST API Tasks: Review and analyze existing NestJS backend Fix bugs and logical issues Improve code structure and performance Fix database-related issues (PostgreSQL) Fix and optimize Redis usage (cache / queue / se...

    €22 Average bid
    €22 Gebot i.D.
    17 Angebote

    Company Description Authem is India's 1st real-time marketplace for limited edition sneakers, streetwear, and collectibles. Using a bid/ask system, we let buyers and sellers set real market prices, no arbitrary markups, no guesswork. Every item is thoroughly verified for authenticity before it reaches your hands, so you can trade with complete confidence. Whether you're hunting grails or moving pieces from your collection, AUTHEM gives you control, protection, and honest pricing in a market that's needed it for years. The Role We're looking for a skilled Full Stack Developer to build our marketplace platform from the ground up and own its ongoing development and maintenance. This is a unique opportunity to be the founding technical team member of an exciting startup, w...

    €1767 Average bid
    €1767 Gebot i.D.
    16 Angebote

    I am looking to build a custom SaaS web application that works smoothly on desktop and Android devices (mobile browsers). The website is only a functional reference for user flow and features. Design, code, branding, and content must be completely original. This is NOT a clone. The system must be built in a flexible and modular way, so that in the future I can change the business model (for example, shifting from Android services to selling digital products or gift cards) without rebuilding the platform from scratch. ⸻ PLATFORM REQUIREMENTS • Fully functional on desktop browsers • Fully responsive and optimized for Android mobile browsers • Clean UI/UX suitable for future mobile app integration • Scalable architecture (No native Android app required at this st...

    €1054 Average bid
    €1054 Gebot i.D.
    29 Angebote

    Looking for DevOps Engineer to Set Up Production Environment for SaaS Application Note: I prefer someone who speaks Arabic for easier communication. Description: I have a working SaaS application built with: • Backend: FastAPI • Frontend: (React) • Database: (PostgreSQL ) The application is already functional, and I have real clients. Now I need an experienced DevOps engineer to prepare a proper production-ready infrastructure. Scope of Work: I need help with: 1. Setting up Production Environment (secure & scalable) 2. Creating Staging / Testing environment 3. Implementing CI/CD pipeline 4. Server deployment (Docker preferred) 5. Security best practices (SSL, firewall, access control, secrets management) 6. Logging & Monitoring setup (error tracking, ser...

    €192 Average bid
    €192 Gebot i.D.
    56 Angebote
    Frontend Next.js con Backend SQL
    6 Tage left
    Verifiziert

    Ya tengo el diseño inicial de la interfaz construido con V0 de Vercel en Next .js. Ahora necesito que lo conviertas en una aplicación funcional que: • Reciba y almacene datos de usuario junto con los documentos que ellos mismos suban. El usuario deberá aceptar "términos y condiciones" ya que está subiendo información confidencial • Guarde todo en una base SQL; me da igual MySQL o PostgreSQL mientras quede bien estructurado y con migraciones incluidas. • Exponga un API REST para altas, bajas, cambios y consultas, de forma que mi equipo pueda consumirla sin fricción. • Ofrezca un pequeño panel interno (puede ser dentro del mismo Next .js) para visualizar y filtrar la información almacenada. ...

    €403 Average bid
    €403 Gebot i.D.
    94 Angebote

    ________________________________________ Freelance Opportunity: Full-Stack Developer ( + Directus) We are looking for an experienced Full-Stack Developer to maintain, and enhance, an existing ERP platform built on a modern JavaScript stack. The role is freelance/contract-based with scope for long-term collaboration. Tech Stack • Frontend: 15 (App Router), React 19, TypeScript, Tailwind CSS • Backend / CMS: Directus (Headless CMS) • Database: PostgreSQL • Infrastructure: Docker, Docker Compose • Deployment: Dokploy on Oracle Cloud VM ________________________________________ Key Responsibilities • Maintain and enhance existing ERP modules, including: o Student management o Internal operations tracking • Design and implement new features and workflows &...

    €58 Average bid
    €58 Gebot i.D.
    14 Angebote

    I have several months of raw sales data sitting in mixed Excel/CSV files and a small SQL dump. I need that information cleaned, organised, and explored so we can finally see what the numbers are really telling us. After the data is trustworthy, I want to zero-in on three priorities: revenue trends over time, customer acquisition and retention behaviour, and sales performance broken down by region. Power BI is my preferred canvas for the visuals. Please build an interactive dashboard that lets managers slice by date, product line, and region while keeping the layout simple enough for non-technical teammates. If you also know Tableau or advanced Excel, great, but the .pbix file is the deliverable that matters most. Once the dashboard is live, I’ll need a short narrative (one-to-two p...

    €395 Average bid
    €395 Gebot i.D.
    64 Angebote

    I need a fully custom-built website that showcases a searchable, filterable product catalog. The site must be responsive, fast, and easy for me to update without relying on WordPress or Shopify. A lightweight tech stack such as HTML5, CSS3, JavaScript with a Node.js or PHP back end and a MySQL or PostgreSQL database would suit me well, but I’m happy to hear alternative suggestions that keep performance and security in mind. Core deliverables I’ll use to accept the project: • Front-end interface designed for mobile and desktop, including category navigation, product grids, detail pages, and an intuitive search/filter bar. • Back-end admin panel where I can add, edit, delete, and reorder products, upload images, and manage categories. • Basic SEO foundations (...

    €212 Average bid
    €212 Gebot i.D.
    47 Angebote

    Backend Engineer – Batch Ingestion Pipeline (CSV → Database) We are building a large-scale book content platform. We are NOT looking for a full-stack developer, UI, or website. We need a backend engineer to build a simple, reliable batch ingestion pipeline. SCOPE Your task is to build a CLI-based ingestion script that: Reads a CSV file with book metadata Inserts records into a PostgreSQL database (Supabase) Handles 10,000–20,000 records efficiently Uses batch inserts (no per-row inserts) Runs outside HTTP (terminal / cron / worker) No frontend. No dashboard. No UI. TECH STACK (Flexible) Node.js or Python PostgreSQL CSV input Environment variables for DB connection OUT OF SCOPE Real-time processing...

    €124 Average bid
    €124 Gebot i.D.
    51 Angebote

    Fix: Production Blank Screen on Replit-Deployed Full-Stack App (Dev Works Fine) Tech Stack: React 19, Vite 7, TailwindCSS 4, Node.js 20, Express 4, TypeScript, PostgreSQL (Neon), Drizzle ORM. Hosted on Replit (Autoscale deployment). The Problem: The app works perfectly in development mode, but after deploying to production on Replit, the browser shows a blank/white screen. No visible errors in the browser console (or provide any you do see). Build Process: Vite builds the frontend to dist/public, esbuild bundles the server to dist/index.js. Express serves the static files in production. The build command is npm run build && npm run db:push, and the production run command is node dist/index.js. What I Need: Diagnose why the production build renders a blank screen Fix the issue ...

    €22 Average bid
    €22 Gebot i.D.
    30 Angebote

    I’m putting together a corporate head-count tracker and I want to move quickly from concept to a secure, production-ready application. The backend will run on Spring Boot; the frontend needs to be available both as classic HTML/CSS/JavaScript pages and as a richer React interface, so we can serve different devices and gradually migrate stakeholders toward React. Security is essential. I need full user authentication with clear role separation—Admin and User—implemented with Spring Security (JWT or another proven token strategy). Beyond wiring the login flow, I also want advice on best-practice password storage, CSRF protection, and anything else you see fit to lock things down. Where I need your help: • Designing the Spring Boot architecture, setting up entities, r...

    €69 Average bid
    €69 Gebot i.D.
    14 Angebote

    The frontend of the project is done. However, I am unable to integrate Supabase as it crashes when I do. I am not familiar with Supabase. This project has user management, with separate portals for Admin, Interpreter, Client, and Staff. It has various workflows (example: Registration-> User Management; Booking Request-> Job Creation -> Assignment Tracking -> Completion Report -> Invoicing -> Payment) and integrations between users (Admin <-> Interpreter, Admin <-> Staff). It is also important that email integration is seamless.

    €118 Average bid
    €118 Gebot i.D.
    115 Angebote

    Projektname: Multi Adding Social Media Platform Kurzbeschreibung: Wir suchen erfahrene Entwickler/Teams für die Erstellung einer modularen, skalierbaren Social-Media-Plattform, die Content-Creator, Nutzer und Admins verbindet. Die Plattform soll multilingual, rechtlich konform und hochsicher sein. Live-Streaming wird vorbereitet, aber nicht aktiv im MVP umgesetzt. Ziele: Multi-User Social Media Plattform (User, Creator, Admin, Moderation, Compliance) Token-gestützte Monetarisierung inkl. Kauf, Bonus, Auszahlung Multi-PSP Unterstützung: Stripe, PayPal, Paysafe, Visa/Mastercard, IBAN/SEPA, Bitcoin (BTC) KI-gestützte Content-Moderation und Empfehlungen KYC / Altersverifikation (ID Upload, Selfie, Liveness Check) Frontend Widgets: Token-Kauf, Altersprüfung, DRM...

    €3927 Average bid
    €3927 Gebot i.D.
    95 Angebote

    Full-stack engineer (Supabase & Stripe) - Help needed to audit, clean up, and stabilize a consumer web app We're looking for a strong, product-minded full-stack engineer to help audit, clean up, and stabilize a consumer web app built on a Lovable (no-code / low-code) frontend with Supabase and Stripe. This is hands-on debugging and systems cleanup, not a greenfield build or design task. We need someone who can jump in, understand an existing codebase quickly, and fix real state and integration issues. What you'll work on: - Auditing and fixing Supabase auth and user state - Ensuring Stripe subscription and webhook logic is correct and idempotent - Cleaning up frontend and backend state mismatches - Verifying content unlock and entitlement logic works correctly for paid use...

    €20 / hr Average bid
    €20 / hr Gebot i.D.
    172 Angebote

    I need a blazing-fast, fully responsive online store built with and Tailwind CSS. Use whichever backend stack—Node.js or Python—helps you move quickest, pairing it with either PostgreSQL or MongoDB for data storage. The project must deploy cleanly on Vercel (Netlify is fine too) with seamless CI/CD. Core requirements • Server-side rendering plus rich Schema Markup so products surface on Google immediately. • Image delivery through Cloudinary with automatic compression and responsive breakpoints. • Secure checkout via Razorpay or Stripe, covering the full order lifecycle—cart, payment, confirmation, refunds. • Google Analytics 4 events for product views, add-to-cart, checkout start, and purchase. • An admin panel to add and edit product...

    €95 Average bid
    €95 Gebot i.D.
    46 Angebote
    Node.js Business Listing Web App
    5 Tage left
    Verifiziert

    I need a full-stack developer to build a website in Node.js that cleanly presents three core areas—business listings, a blog section, and a product showcase—supported by a secure admin panel. The admin area must let me create, update, and archive content for each of those modules using a straightforward email-and-password login flow. Visual direction is modern and minimalist: lots of white space, clear typography, subtle accents, and a layout that feels snappy on both desktop and mobile. I’m happy for you to pick the most suitable Node.js framework (Express, Nest, Next, etc.) and database, as long as the code is modular and easy for another developer to pick up later on. Key deliverables: • Responsive public site with the three content sections wired to dynam...

    €259 Average bid
    €259 Gebot i.D.
    102 Angebote

    Las métricas ya existen en el backend y en la base de datos. El trabajo NO es crear métricas nuevas, ni rehacer lógica. Solo es consumir los datos existentes y mostrarlos correctamente en el dashboard. Las métricas incluyen interacciones, actividad de eventos y datos por organizador. STACK React (dashboard) Backend ya hecho Supabase (PostgreSQL) FORMA DE TRABAJO 100% remoto Trabajaremos en llamadas mientras explico el sistema Necesito a alguien que entienda código existente y avance rápido REQUISITOS Hablar español (obligatorio) Experiencia con React Experiencia conectando APIs / Supabase Saber trabajar sobre código ya existente AL POSTULARTE, INDICA Tu experiencia con React Si has trabajado con dashboards o mé...

    €128 Average bid
    €128 Gebot i.D.
    51 Angebote

    My Ruby (Rails) API usually answers in milliseconds, yet at unpredictable moments the same endpoints take seconds to return. Standard logs show no spikes in traffic, and CPU / memory look normal, so I suspect a hidden bottleneck—perhaps DB connection exhaustion, an elusive N+1 query, or a background job starving Puma threads. You will dive into the codebase, profile the request/response cycle, pinpoint the root cause, and supply a clean fix that restores consistent response times. Feel free to use rack-mini-profiler, New Relic, Scout, or your preferred Ruby profilers; the server runs Ruby 3.1 and Rails 7 on PostgreSQL. Deliverables • Diagnostic report summarising findings and root cause • Patch or pull request with the optimised code/configuration • Before-an...

    €12 / hr Average bid
    €12 / hr Gebot i.D.
    14 Angebote

    Please Read Carefully Before Applying It does not matter whether you consider yourself a “vibe coder” or a traditional software engineer we accept both here. What matters is whether you can make this system work reliably at scale. We operate a production scraper that processes 500+ leaderboard sites per hour. All sites we scrape are leaderboards, but no two sites are the same. This is not a basic scraper. What Makes This Scraper Different The leaderboards we scrape vary heavily in structure and behavior: Dynamic buttons, tabs, and switchers JavaScript-rendered content Hybrid navigation (UI interaction + background API calls) Tables, card layouts, podium layouts, or combinations of all three Masked usernames and inconsistent rank formats Different ordering of wager / prize data ...

    €17 Average bid
    €17 Gebot i.D.
    27 Angebote

    Senior Full-Stack Engineer (Python/FastAPI + React) – Secure Platform MVP Overview I am looking for a senior full-stack engineer to build a secure, authentication-heavy web platform MVP. The project involves: - User authentication & verification - Role-based access control - Relationship-based data modeling - Private content access - Secure cloud deployment Product details will be shared after NDA and shortlisting. Required Tech Stack (Mandatory) Backend Python + FastAPI PostgreSQL (relational modeling) Redis (caching, rate limiting, OTP/session handling) JWT authentication (access + refresh tokens) Async/background task processing (Celery or equivalent) Frontend React + TypeScript preferred Tailwind CSS or similar utility-first styling Infrastructure AWS (Light...

    €98 Average bid
    €98 Gebot i.D.
    34 Angebote

    1 Product & Inventory Management 1.1 Product Master Create, edit, and manage products Product categorization Product status (active/inactive) Mapping with brand, tax, and attributes 1.2 Brand Master Manage product brands Brand-wise reporting support Assign brands to products 1.3 Tax Master Define multiple tax structures Support percentage and fixed tax Tax mapping with products and transactions 1.4 Item Master Item-level inventory management SKU / item code handling Unit of measurement Opening stock and stock valuation 2 Supply Chain & Operations 2.1 Supplier Master Supplier creation and maintenance Contact, address, and tax details Supplier-wise purchase history 2.2 Trade Agreement Management Supplier-specific pricing agreements Validity period for agreemen...

    €1162 Average bid
    €1162 Gebot i.D.
    52 Angebote

    I’m racing toward launch and need a backend ace who can dive straight into my Hostinger setup, show real code today, and keep pace with aggressive milestones. The environment is Python backed by PostgreSQL, with Hostinger’s AI tools playing a central role. First priority is wiring reliable cron jobs, refactoring what’s already in GitHub, and embedding the AI endpoints cleanly into the existing API layer. While you’re there, run a performance sweep—profile, optimise, and make sure every Postgres query is bulletproof. Deliverables for the opening sprint: • Pull request that proves the cron jobs execute on Hostinger and log cleanly. • AI tool integration wrapped in clear, testable Python modules. • Concise review memo highlighting bottl...

    €119 Average bid
    €119 Gebot i.D.
    73 Angebote

    Project Overview We are seeking a qualified vendor or agency to redevelop an institutional website into a modern, accessible, secure, and multilingual platform. The new website must use a Headless Drupal 10 CMS with a frontend and comply with GIGW 3.0 (Government of India Guidelines for Web Accessibility). --------------------------------------------------- Project Objectives The redeveloped website must: • Transition to a Headless Drupal 10 CMS with a decoupled frontend • Ensure full GIGW 3.0 compliance (accessibility, security, privacy) • Provide a responsive, multilingual interface (English, Hindi, Kannada) • Implement role-based access control • Improve SEO visibility and content discoverability • Enable structured content workflows and approvals • D...

    €2977 Average bid
    €2977 Gebot i.D.
    60 Angebote

    I need a lightweight, browser-based application that lets customers quickly find and book trusted home-service pros—starting with cleaners—through a clean, Uber-style interface. The whole experience must feel effortless for users who may not be tech-savvy, so every screen has to be uncluttered, with large touch targets, clear typography and a gentle colour palette. Core workflow • A new customer lands on the site, registers with a phone number and receives an SMS code to verify the account. • They browse service-provider cards that show a photo, short bio, skill tags and an aggregate star rating pulled from past jobs. • From the same view they tap a date/time slot, confirm the booking and immediately see it in their personal schedule. • A lightweigh...

    €238 Average bid
    €238 Gebot i.D.
    164 Angebote

    My small team already feels comfortable moving around Odoo, but we need a deeper, hands-on grasp of its advanced features—specifically within the Inventory and Manufacturing apps. The aim is to master topics such as multi-warehouse routing, replenishment automation, serial/lot tracking, BOM management, work-center scheduling, and related reporting so we can run our operations without outside help. What I need from you is a structured yet practical learning experience that walks us through real use-cases in our own staging database, builds muscle memory through exercises, and leaves us with reference materials we can revisit later. Deliverables • Training agenda tailored to our current workflow • 4–6 live interactive sessions (screen-share or similar) for up to fiv...

    €21 / hr Average bid
    €21 / hr Gebot i.D.
    50 Angebote

    I'm looking to create a comprehensive anime streaming website that offers both subtitled and dubbed anime content. Key Features: - Extensive library of anime series and movies, both subtitled and dubbed. - User-friendly interface with advanced search and filter options. - High-quality streaming with minimal buffering. - User account creation with watchlists and viewing history. - Mobile-responsive design for viewing on various devices. - Secure payment gateway for subscription services. - Regular content updates and maintenance. Ideal Skills and Experience: - Proven experience in developing streaming platforms. - Strong UI/UX design skills. - Knowledge of content management systems. - Familiarity with payment integration and security protocols. - Experience in handling high traffic...

    €93 Average bid
    €93 Gebot i.D.
    30 Angebote

    I’m ready to commission a custom PostgreSQL-based system that brings four critical workflows into one place: • Inventory control with real-time stock level monitoring and fast barcode scanning for check-in / check-out. • Employee schedule management so I can see who is assigned to each job at a glance. • Job costing and progress tracking that ties labor, materials, and overhead together for accurate profitability insights. • A secure API endpoint that pushes material usage from each job directly into QuickBooks, eliminating double entry. You will design the data model, build the web interface (any modern stack you’re comfortable with), and implement the QuickBooks integration. Clean, well-documented code and straightforward deployment instructions ...

    €960 Average bid
    €960 Gebot i.D.
    270 Angebote

    1. Purpose This document defines the functional and non-functional requirements for developing a RetailMan-style Point of Sale (POS) system designed for retail businesses operating multiple branches, each running offline, with multiple terminals, multiple stock locations, and credit sales support. The system must be fast, reliable, offline-first, and suitable for supermarkets, electronics stores, hardware shops, and similar retail environments. 2. System Overview Each branch operates independently on its own local server and LAN. Multiple cashier terminals connect to the branch server. The system works 100% offline at branch level. A future sync module will allow consolidation between branches when internet is available. 3. Architecture Requirements 3.1 Deployment Model Branch Ser...

    €562 Average bid
    €562 Gebot i.D.
    69 Angebote
    API-First Trust System MVP
    3 Tage left
    Verifiziert

    I need a backend engineer to turn my spec into an MVP that exposes a clean, API-first trust and reputation service for autonomous AI agents. The entire product lives server-side—no front-end work at all—so every feature must be reachable through intuitive, well-documented endpoints. Core requirements • Stack: your choice of FastAPI (Python) or Node (TypeScript), backed by Postgres, containerised with Docker, and wired to Stripe for billing events. • Auth: simple, robust API Key flow; keys must be generated, stored, and validated on every request. • Scoring logic: compute each agent’s trust score solely from its interaction history, according to the formulas in the spec. Performance metrics or direct user feedback are outside this first iteration. ...

    €220 Average bid
    €220 Gebot i.D.
    171 Angebote

    I need a skilled full-stack developer to create a web-based minimum-viable product that helps users manage their personal finances. The goal is to ship a usable, secure, and cleanly coded MVP that can later be expanded into a full platform. Scope • Build a responsive web application focused on personal finance management. • Implement standard sign-up/login with secure authentication. • Design a clear, intuitive dashboard that loads quickly on desktop and mobile browsers. • Establish a well-structured backend (REST or GraphQL) and a modern frontend framework—whichever stack you work fastest and most confidently with. • Use a relational or document database (PostgreSQL, MySQL, MongoDB, etc.) and write concise, well-documented queries. • Follow b...

    €27 / hr Average bid
    €27 / hr Gebot i.D.
    117 Angebote

    I'm looking for an experienced full-stack developer to implement the MVP end-to-end. Overview Clients submit coding tasks through a store-like request system. Each request becomes a project with clear lifecycle tracking, communication, time tracking, and weekly billing. The platform must support multiple roles: Client, Developer, and Admin. Core Features (MVP) Service Request & Project Creation • Store-style service selection • Structured task submission (requirements, priority, attachments) • Automatic project creation after request/payment Project Lifecycle Management • Status flow (e.g. Received → Investigating → In Progress → Review → Completed) • Progress updates and activity history • Central dashboard per user role C...

    €420 Average bid
    €420 Gebot i.D.
    214 Angebote

    Hello everyone, My name is Reagan, and I’ve been working for a year on an exciting project: an intelligent and multilingual dictionary dedicated to African dialects. This open-source project aims to evolve into an AI voice assistant capable of understanding and speaking multiple African dialects. At the moment, I’m slightly stuck on some technical aspects, particularly the connectivity between the backend, frontend, and the database. I’m looking for a collaborator who can provide technical support and bring innovative ideas to enhance and improve the project. I’m seeking constructive collaboration and mutual growth. If you have skills in development, optimization of the connection between different parts of the project, or fresh ideas to improve the architecture,...

    €16 Average bid
    €16 Gebot i.D.
    8 Angebote

    Documento do Sistema – Plataforma de Automação SaaS Este documento descreve os requisitos funcionais e técnicos para o desenvolvimento de uma plataforma de automação utilizada para prestação de serviços mensais gerenciados, com integrações ao Instagram, WhatsApp e uso de Inteligência Artificial. 1. Visão Geral Desenvolvimento de uma plataforma web para automação de atendimento. O administrador cria e mantém fluxos automáticos para seus clientes. O sistema será usado inicialmente como plataforma interna de prestação de serviços, com possibilidade de evolução futura para SaaS self-service. 2. Estrutura SaaS (Multiempresa) Sistema multi...

    €626 Average bid
    €626 Gebot i.D.
    34 Angebote

    Project summary You are finishing an MVP for Beauty Couriers LLC, a local beauty supply pickup & delivery platform. The app was generated in Bolt and is built with React and Supabase. Stripe is partially integrated. The goal is to complete Auth, Payments, GPS tracking, and Store Launch. The app was generated in Bolt and is built with React and Supabase. We want totally use Supabase. Stripe is partially integrated. The goal is to complete Auth, Payments, GPS tracking, and Store Launch. Stack (current) Frontend: React (Bolt-generated) Backend: Supabase (Postgres + Auth + RLS) Payments: Stripe (partially wired) Maps/GPS: Geolocation + Maps (Google Maps or Mapbox acceptable) Roles CUSTOMER SUPPLIER COURIER ADMIN (basic admin controls if already scaffolded; otherwise leave mini...

    €135 Average bid
    €135 Gebot i.D.
    58 Angebote

    I have the backend, APIs, and a clear visual direction in place; what I still need is the full React-based frontend for a web-first laundry administration and point-of-sale system. Because the task is frontend build only, your effort will go straight into code: responsive components, state management, API wiring, and printer-ready layouts. Core screens to ship • Admin: customer list/detail, services & pricing maintenance, order tracker with status updates, transaction ledger, and a lightweight reports view. • POS: rapid item entry, dynamic cart, split-payment checkout, shift open/close modal, and receipt/order print preview routed to a printer endpoint. Tech context The backend (Node.js, PostgreSQL, payments) is live and documented; you will consume REST/JSON endpoints fr...

    €436 Average bid
    €436 Gebot i.D.
    232 Angebote

    I need a relational database system designed and implemented for a small restaurant using PostgreSQL. This database should efficiently manage orders and provide insightful analytics. Key Requirements: - DBMS: PostgreSQL - Track Orders - Store Details: Items ordered Ideal Skills and Experience: - Strong PostgreSQL expertise - Experience in database design and implementation - Knowledge of generating analytical insights from database data The database should help us understand popular menu items, track daily sales, and maintain a comprehensive order history.

    €3 / hr Average bid
    €3 / hr Gebot i.D.
    15 Angebote

    I need expert guidance to install a database server on a Windows operating system. Key requirements: - Experience with Windows server environments - Advise and whats required to install Sequoia Server/ sofware. - Ability to provide clear, step-by-step installation instructions and best practices

    €160 Average bid
    €160 Gebot i.D.
    54 Angebote

    Importer SaaS – Developer Quick Specification (Web) 1. Overview Product: Importer SaaS (MVP) Platform: Web (FlutterFlow) (discussable) Backend: Supabase (PostgreSQL + Auth + RLS) (discussable) Architecture: Multi-tenant (Company-based isolation) Payment gateway Future: Ready for Mobile (iOS / Android) 2. Core Goal Build a dashboard to manage and view shipments per company with strict data isolation. 3. Tech Stack (discussable) Frontend: FlutterFlow (Web) Backend: Supabase Auth: Supabase Auth Security: Row Level Security (RLS) 4. Database Tables (discussable) companies: id, name memberships: id, user_id, company_id, role shipments: id, company_id, shipment_type, origin_port, lifecycle_status, created_by, created_at , Esc... (discussable) 5. Security Rules Users can only access da...

    €211 - €634
    Versiegelt
    €211 - €634
    178 Angebote

    I’m ready to commission a full-stack team that can deliver a production-grade, Uber-style taxi platform end to end. The scope covers an Android and iOS rider app, a dedicated driver app, an admin web dashboard, and a robust, scalable backend that keeps everything in sync in real time. Core features • Live GPS tracking so riders and drivers can see one another on the map with sub-second updates. • Seamless in-app payments supporting Credit/Debit Cards, Digital Wallets, and Bank Transfers from day one. • A wallet system for stored value, promos, and instant driver payouts. • AI/ML surge-pricing engine that dynamically adjusts fares based on supply-demand patterns. • Comprehensive analytics: user activity, revenue, fleet performance, and operational K...

    €1167 Average bid
    €1167 Gebot i.D.
    145 Angebote
    Fix Python Data Delay & Redesign
    3 Tage left
    Verifiziert

    My Python-based STOCK TRADING AGO web application is suffering from a real-time data issue: background processing runs, but the results reach the client side with a noticeable lag. I need you to trace that bottleneck, bring the pipeline back to true real-time behaviour, and then give the interface a fresh look while you’re in the codebase. Current stack • Python 3.10 with FastAPI • Celery + Redis for background jobs • PostgreSQL 13 • Front-end in plain HTML/CSS with a sprinkling of vanilla JS What I expect from you 1. Diagnose why background tasks aren’t pushing updates instantly—whether it’s queue configuration, database locking, or cache timing—and implement a clean, well-documented fix. 2. Refactor or rewrite any britt...

    €27 Average bid
    €27 Gebot i.D.
    19 Angebote

    AssessQ – AI-Powered Technical Assessment Platform Role: Full Stack Developer Developed AI-powered hiring platform with automated interview generation and resume parsing Implemented real-time proctoring system with violation detection and session monitoring Built adaptive multi-session interview engine with dynamic question generation Designed real-time admin dashboard using WebSockets Implemented JWT-based authentication and role-based access control Developed analytics module with PDF reporting Optimized performance using lazy loading and API caching Tech Stack: React 18, TypeScript, FastAPI, WebSockets, JWT, PostgreSQL, AI APIs PRIDE – AI-Powered Content Studio Role: Frontend / Full Stack Developer Designed dynamic template management and real-time PDF preview system Develo...

    €8 / hr Average bid
    €8 / hr Gebot i.D.
    38 Angebote

    I’m building an internal business tool for our clients and customers, powered by a Node.js back-end and a React front-end. I’ve already mapped out the core architecture and now need a developer who can turn that plan into a clean, production-ready application. Core features we must deliver: • User authentication – secure sign-up, log-in, and role-based access • Data visualization – interactive charts/graphs that pull from our REST endpoints • File upload & download – reliable handling of documents up to 50 MB, with progress indicators The back-end will expose a RESTful API in Node.js (Express is fine), connect to a PostgreSQL database, and include JWT-based auth plus basic rate limiting. On the front-end, React (hooks, functional compo...

    €445 Average bid
    €445 Gebot i.D.
    238 Angebote

    I’ve outlined a complete dental-clinic workflow that needs to come alive as a modern web app. The stack is already chosen—Node.js deployed to Vercel for the front end, an API layer running on Render or Fly, Postgres via Supabase (Neon is fine too), Redis through Upstash, and Cloudflare R2 for file storage—so please be comfortable wiring these services together. Core domain • Three roles drive the system: Admin, Doctor, and Patient. Admins must enjoy full access to every feature and data point, while Doctors see only their clinical and financial responsibilities. Patients interact with their own records. • Patient profiles are created through self-registration; once verified, the profile becomes the hub for treatments, billing, and history. Daily flow I n...

    €306 Average bid
    €306 Gebot i.D.
    73 Angebote

    Job Title Secure Membership Platform Developer – Private, Verified, NFC & Event Access (Fraternity) Project Description We are building a protected, private membership portal for Black Bro Phi Fraternity (BBΦ). This system must be security-first, verification-based, privacy-protected, and adult-only. It is not a public community, not a social network, and not open access. What You’re Building A protected membership portal where: There is no public browsing of member pages Users cannot guess URLs to access anything Only verified and approved members can log in The public can only access limited verification pages (no private data) Access Control (Required – Default Deny) Every portal page must require authentication If a user is not logged in → re...

    €1897 Average bid
    €1897 Gebot i.D.
    195 Angebote

    Fraud Detection Platform - Extraction Accuracy & Expansion Project Title **Senior Python Developer Needed for Document Fraud Detection Platform (Ongoing)** --- Project Description I have an 80% complete document fraud detection platform (Fraud X) built with: - **Backend**: Python, FastAPI, PostgreSQL, asyncpg - **Frontend**: React - **Infrastructure**: DigitalOcean VPS, Nginx, Gunicorn/Uvicorn, HTTPS - **OCR**: Multi-provider (Google Document AI, AWS Textract, GPT Vision fallback) Current Status The core system is working: - File upload & scan lifecycle - Multi-provider OCR with scoring - Fraud engine with PASS/CAUTION/FAIL verdicts - Admin dashboard with evidence viewer - JWT authentication & role-based access What Needs to Be Fixed (Phase 1 - Immediate) **1. Paystub E...

    €421 Average bid
    €421 Gebot i.D.
    105 Angebote

    Our live data sits in a PostgreSQL instance and some key queries are beginning to drag. I need you to step in, profile what is happening, and carry out light-touch changes that immediately tighten up performance while outlining any deeper work we should schedule later. During the engagement you will: • Capture the worst-offending queries, analyse execution plans, and benchmark current response times. • Review the existing schema and indexing strategy, then create or adjust indexes, vacuum/analyze settings, configuration parameters, and any other low-risk tweaks that deliver quick wins. • Produce a concise report that documents every change, the before-and-after metrics, and recommendations for larger refactors I can present to the wider team. All updates must be backwa...

    €18 / hr Average bid
    €18 / hr Gebot i.D.
    75 Angebote

    My team needs a seasoned full-stack developer to step in as a consultant who can transfer knowledge rather than write code. I’m specifically looking for someone confident across frontend, backend, and database layers who can translate that depth into clear, structured technical training sessions. Your core mission is to design and deliver training that sharpens our developers’ practical skills. Expect to break down real project scenarios, walk through architectural decisions, explain code quality best practices, and answer ad-hoc questions as they come up. We work mostly with JavaScript/TypeScript, React, Node.js, and PostgreSQL, so fluency in these (or closely related stacks) will help you connect quickly with the team. Deliverables • A short training plan outlining top...

    €46 / hr Average bid
    €46 / hr Gebot i.D.
    107 Angebote

    We are looking for experienced React and Node.js developers based in Pakistan to join our growing team on a full-time, long-term basis. Requirements: Strong experience with React.js (hooks, state management, API integration) Solid experience with Node.js, , and REST APIs Familiarity with databases (MySQL / PostgreSQL / MongoDB) Ability to write clean, maintainable, and well-structured code Good communication skills in English Ability to work independently and as part of a team Work Schedule: 2nd Shift: 8:00 PM to 3:00 AM (Pakistan time) Remote work Compensation: PKR 100,000 to 150,000 per month, based on experience and performance Why work with us? Long-term opportunity Professional work environment Real-world SaaS projects Stable monthly income If you meet the above requ...

    €393 Average bid
    €393 Gebot i.D.
    56 Angebote

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