Backend-Entwicklung Jobs

Software Architect für SAP-basierte Mobile Solutions (UI5, Fiori, BTP) für DB InfraGO FFM ________________________________________ Projektumgebung und Projektziele Die DB InfraGo ist für das Schienennetz und die Infrastruktur des DB-Konzern verantwortlich. In diesem Zuge hat sie eine Nachweisführung des Qualitätszustands der Eisenbahninfrastruktur. Aktuell werden Inspektionsergebnisse auf Papier dokumentiert; das IIS hält digitale Zustandsdaten vor. Ziel ist die Migration der Daten in ein revisionssicheres System, das die Papierdokumentation ablöst. Die Inspektionsdaten werden je Fachlinie unterschiedlich erhoben, z. B. über Messzüge oder detaillierte Einzelmessungen. Das Projekt fokussiert auf die Informationskette der Inspektionsdaten, ...

I need an Android educational app deployed in kiosk mode onto device for a prototype. The app features an AI assistant that responds to voice commands with a graphic interactive face. Key Requirements: - App to be set up in kiosk mode - Back end suggestion and gemini api integration. Ideal Skills: - Experience with Android kiosk mode - Background in educational app development - Proficiency in integrating AI voice command functionalities

Saya ingin membangun sebuah aplikasi bisnis Android yang membantu tim kami bekerja lebih giat dan terorganisir. Fokusnya adalah: • Fitur utama — pencatatan tugas, pengingat berkala, dan dasbor ringkas untuk memantau kinerja harian. • Platform — khusus Android, dikembangkan dengan Kotlin atau Java menggunakan arsitektur modern (mis. MVVM, Room, Retrofit). • Backend — solusi ringan cukup memakai Firebase / REST API; saya terbuka pada saran Anda asalkan data tersinkron secara real-time. • Antarmuka — bersih, intuitif, dan siap dipakai oleh pengguna non-teknis. Hasil akhir yang saya butuhkan: 1. APK siap uji di perangkat Android 10+. 2. Kode sumber lengkap beserta instruksi build. 3. Dokumentasi singkat alur fitur utama dan struktur d...

I'm looking to build a subscription-based assessment service on Wix Velo. This platform will be credit-based and allow member organizations to view detailed analytics from skill test completions. Key Requirements: - Offer skill tests as assessments. - Provide analytics for member organizations, including: - Performance scores - Completion rates - Time taken per test - Fit scores - Risk indicators - User roles with access: A- Administrators - Instructors - Members Ideal Skills and Experience: - Proficiency in Wix Velo - Experience in developing subscription-based services - Strong analytics and reporting capabilities - Familiarity with user role management in web applications Looking for a developer who can create a seamless, user-friendly platform with robust analy...

I am initiating a long-term, full-scale project to build a smart restaurant application that will operate natively on both iOS and Android. The goal is to create a production-ready platform—not a quick MVP—that can scale and evolve over several phases. This venture is structured as a technical partnership with an Arabic software company that already has an in-house team and a verifiable track record in mobile product delivery. No individual contractors or intermediaries will be considered. Scope at a glance • Collaborative product strategy and roadmap definition • UI/UX design that meets modern Arabic and international usability standards • Native or high-performance cross-platform development for iOS and Android • QA, staging, deployment, and on...

********LARAVEL ONLY, THIS IS AN ADDITIONAL FEATURE BEING ADDED TO AN EXISTING SITE********* Project Proposal: Dynamic Staffing & Scheduling Integration Project Overview This project introduces a synchronized scheduling ecosystem designed to bridge the gap between Employer demand and Employee availability. The system allows Employers to generate multiple unique shift slots from a single requirement, provides real-time hour/budget calculations, and offers Employees a targeted marketplace to claim shifts that match their credentials. Part 1: The Milestone Roadmap Milestone 1: Facility & Staff Demand Architecture -Employer Dashboard: Implementation of the core SCHEDULE tab. -Facility Management: Capability to create and store multiple Facilities (e.g., "Atlantis Scan Center&qu...

I’m ready to launch a full-featured social networking web application and need a developer who can take it from concept to production. The core experience revolves around three must-have features: rich user profiles, a real-time messaging system, and an engaging activity feed that keeps everyone up to date on posts, likes, and comments. The site has to be entirely browser-based, mobile-responsive, and built with clean, well-documented code. I’m open to the modern stack you prefer—whether that’s React or Vue on the front end, a Node/Express, Django, or Laravel backend, and a solid relational or NoSQL database—so long as it scales, is secure, and performs smoothly under load. Deliverables I expect: • Wireframes or a clickable prototype to confirm UX...

I need help in my website Cloudflare sdk 1. Generate super admin, admin pages and dashboards 2, muti tenants customers dashboards 3, prepare moyasar payments gateway api ( i will enter the keys ) 4, fix the ai models so user can select one to use

My clothing brand now needs its own digital storefront, and I want it built from the ground up rather than on Shopify, WooCommerce, or Magento. The goal is a fully custom e-commerce site that feels premium, loads fast, and converts visitors into loyal customers. Core functionality • User accounts with profile management and order history • Smooth shopping cart and secure checkout (multiple payment gateways) • Product reviews and ratings visible on each item page • Automatic tracking of repeat purchases so we can reward returning shoppers • AI-powered virtual try-on so customers can see garments on themselves before buying I’ll supply all brand assets, product photography, and copy. I’d like clean, scalable code (React, Vue, or another modern...

I need a programmer who can work on both the front-end and back-end using Flutter & Node.js. Responsibilities include: adding images and videos to the server; adding a map with country and city selection; and adding a "success" screen.

I’m starting fresh on a Django-based web application and need an experienced developer who can own the build from the ground up. The first release must include solid user authentication, a clean admin dashboard, and well-documented API integration. Alongside those, I also have an accounting component that needs to slot neatly into the overall architecture, so familiarity with ledger or billing modules in Django (e.g., Django-money, Stripe, or similar) will be helpful. The data model centres on user profiles and accounts, so I’ll look for sensible use of Django’s auth system, custom user models where necessary, and migrations that keep future changes painless. Clean, readable code, Git version control, and concise commit messages are non-negotiable. I’m happy with D...

I need a programmer for the Node.js backend and AR so that the image moves in front of the camera. We also need to upload the image to the server, create a map of its coordinates, track its current location, and monitor the number of viewers, among other things we will discuss. The application was built in Flutter, and the backend is in Node.js. The final price for this entire project is only $550.

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...

Estoy desarrollando una web app de gestión orientada a escuelas de vuelo y aeroclubes, con proyección a iOS y Android. El proyecto es serio y ya está definido a nivel funcional. Inicié el desarrollo en Base44, pero necesito migrarlo a Supabase para dejar de depender de esa plataforma y dejar la solución lista para producción. Busco un/a desarrollador/a o socio técnico que pueda encargarse de: Migración completa a Supabase (base de datos, autenticación, storage y lógica backend que corresponda). Dejar la web app lista para producción. Prepararla para publicación en iOS y Android (arquitectura compatible / empaquetado según stack elegido). Módulos clave (simples y eficaces): Acceso y gesti...

Project Title OVYNIK – Build India’s Bakery Intelligence Content Platform (UX, CMS & Editorial Structure) Project Overview We are creating OVYNIK — India’s Bakery Intelligence Platform Tagline: From Oven to Outlet This project is to build a content and knowledge platform for the bakery industry. The scope is limited to: Website structure UX/UI CMS setup Editorial templates Content presentation This is a publishing platform project only — not for advertisements, solicitation, networking programs, financial offers, or multi-level marketing. Primary Audience Bakery founders (artisan, chain, QSR-bakery formats) Operations & expansion managers Upcoming food entrepreneurs (observer & learner segment) Problem Statement Bakery knowledge in India is current...

Preciso levar ao ar um MVP que já tem toda a lógica de negócio validada; o desafio agora é engenharia pura. A aplicação deve processar eventos de forma determinística, mitigar riscos e permanecer em produção 24 horas por dia, sete dias por semana, sem intervenção manual. O backend será obrigatoriamente escrito em Python. Fico aberto quanto às demais escolhas de stack, contanto que sustentem uma operação resiliente (por exemplo, containers Docker orquestrados, automação IaC como Terraform e um pipeline CI/CD que inclua testes automatizados, linting e deploy contínuo). Logs centralizados, métricas, alertas e versionamento de infraestrutura são parte d...

I am looking for a lead developer to architect and build a scalable "Sustainability-as-a-Service" platform. The core of the product is a high-performance API that will be integrated into the checkout flows of major e-commerce and delivery platforms to facilitate real-time environmental impact (tree planting) with every transaction. The core challenge is two-fold: High-Volume API Integration: We need a robust backend capable of handling thousands of concurrent requests from enterprise-level partners. The system must process transaction data, trigger fulfillment requests, and maintain 100% data integrity. The Transparency Layer: Our unique value proposition is verifiable proof. You must build a database and front-end dashboard that stores and serves geotagged data (GPS coordinat...

I am setting up a multi-section classified directory on Joomla using the current J-BusinessDirectory component and have a budget of roughly four thousand euros to get it done right. Scope The site must launch with three fully independent sections—Real Estate, Jobs and Services—running off a single Joomla install while sharing the same template and database. Each section should feel purpose-built yet consistent in look and functionality. Core features to build / configure • Advanced search in every section, including category, location and keyword filters • Image galleries on all listing views (thumbnail + lightbox) • User reviews and star ratings tied to each listing • Front-end submission workflow with moderation dashboard • Registration ...

I’m planning an interactive, data-structures-and-algorithms-focused coding duel platform and I need a crystal-clear design and architecture proposal before any code is written. The end product must feel like a learning arena first and a competition second, so every technical choice has to support quick feedback, fairness and easy-to-follow analytics for students. Core experience to address The platform will present the same DSA question to two users simultaneously, lock them into a fixed countdown and stream their code through a real-time execution engine so they can see results (compile errors, test-case pass/fail, runtime, memory) without refreshing. While live chat or leaderboards may appear later, this first proposal must concentrate on that real-time duel loop and the backend...

(Subject): Urgent: Laravel API Optimization & Security Fixes (50k Concurrency) – Must Use Windsurf

I’m midway through a software development project and now need to fold in a fully-fledged user authentication layer. The current codebase is stable and organised; what’s missing are the sign-up, log-in, password reset, and basic role-based access controls that will make the product production-ready. You’ll be working against an existing Git repo. I’ll grant access and walk you through the structure so you can slot your changes in cleanly rather than bolting them on. I’m open to the usual approaches—JWT sessions, OAuth, or any secure flavour you’re most comfortable with—as long as the solution is standards-compliant and easy for another developer to pick up later. Deliverables • Registration, log-in, log-out, password reset flows ...

We have app in google play Flutter & node js We would like to add some missing items here. The price is fixed at $400. If you come and request more, you will be disqualified. 1. Fix Bio Persistence: Ensure bio text is saved and doesn't disappear after closing the app. 2. Enable Copy & Paste: Allow users to copy and paste text throughout the app. 3. Media Removal Option: Add a feature to delete profile and background pictures. 4. Handle Direction Fix (@): Correct the handle display (e.g., @kaled) when switching to Arabic. 5. Multi-language Support: Add Spanish, Portuguese, French, Hindi, Indonesian, Japanese, Korean, and Russian. 6. Smart Share System: Implement branded deep links for sharing content with download prompts. 7. Color Customization: Allow users to select cust...

Senior Full-Stack Developer (Laravel 12 + Vue.js) Chi siamo Connecta Partners è una società di intermediazione in luce, gas, telefonia ed efficienza energetica. Siamo in rapida crescita e stiamo ampliando il reparto di sviluppo: abbiamo un CRM proprietario e un ecosistema digitale a supporto di marketing, vendite e operation. Perché stiamo cercando Abbiamo necessità immediata di interventi urgenti sul CRM e vogliamo impostare una gestione tecnica stabile. Il ruolo nasce per una sostituzione di alcuni mesi (il nostro sviluppatore è fermo per motivi di salute), con possibilità concreta di continuare e/o inserirsi stabilmente se il periodo va bene. Dove lavorerai Il lavoro sarà svolto prevalentemente in presenza presso la sede ...

Three finished Android apps are ready for their final enhancement: integrating a hosting layer so user data and media can live on a reliable back-end instead of locally on the device. All UI assets, icons, and existing source code are packaged and waiting in the repository; the work now is purely feature addition, not bug fixing or UI tweaks. Scope of work • Choose or configure a hosting solution (Firebase, AWS, or any lightweight VPS—whichever fits best). • Wire the back-end to each app so login, uploads, and simple read/write actions pass through tested API calls. • Update the project settings, build files, and pro-guard rules where needed. • Provide clear build instructions and a short “read-me” detailing endpoints, keys, and deployment ste...

Hello, We are using Zoho Books (UAE VAT module enabled) for both B2C and B2B invoicing. Currently, each invoice contains multiple services (often 10–15+), and each service consists of: Government fees (VAT exempt) Service/processing charges (VAT @ 5%) Typing or administrative charges (VAT @ 5%) Our challenge is invoice presentation. If each component is shown as a separate line item, the invoice becomes too long and difficult for customers to read. Desired outcome: We want the invoice to display a summarized table with limited rows, while still maintaining correct VAT treatment and accounting accuracy in Zoho Books. Specifically, we would like to explore whether customization (Deluge + template customization) can achieve the following: A summarized invoice table with grouped...

I need a complete business website built from scratch and taken all the way to live deployment. The project is strictly a website development job, not an app, and the finished site will present my services clearly while giving visitors an easy way to reach me. Core requirements • A clean, responsive service listing section so potential clients can scan what I offer at a glance. • A secure, spam-protected contact form that routes messages straight to my business inbox. Everything else—framework, CMS, or custom code—is flexible. Feel free to propose the stack you work fastest with, whether that’s a React / Node.js setup, a Django build, or a PHP framework like Laravel. What matters is that the final result loads quickly, follows best practices in HTML5, CSS3...

Project Description: We are looking for a skilled developer to build a modern, fast, and responsive website for our platform. We are open to development in WordPress, React, Node.js, or similar modern frameworks, depending on what best suits performance and scalability. Reference Websites (Design & Experience Inspiration): Requirements: Clean modern UI/UX similar to reference websites Fully responsive design Fast loading and SEO-friendly structure Contact/lead forms integration Easy content management Basic security setup

Hi, ******Need someone ONLY AND ONLY from AUSTRALIA AND UK ONLY for my betfair apis development. I’m expanding an existing trading suite and now need clean, reliable access to Betfair’s Market Data API. Because of licensing considerations, I can only work with developers physically based in Australia or the United Kingdom. Scope of work – Connect to the Betfair Exchange API (non-interactive login is already in place on my side) – Retrieve real-time odds, price ladders and market status updates for Horse Racing, Football, Tennis and Cricket markets only – Structure the responses so they can be consumed by my Python back-end (JSON is fine) – Handle throttling limits and session renewal gracefully Deliverables 1. Well-commented source co...

My site’s contact form suddenly stopped working—clicking “Submit” returns an error. I haven’t knowingly changed any settings or code and I’m not sure if (the platform I used to build the site) pushed a silent update that might be behind this. I need you to: • Trace whatever is blocking the request, whether that’s a front-end script conflict, a mis-routed POST endpoint, or a server-side validation snag. • Restore full functionality so visitors can successfully send data and I receive it in the intended inbox/database. • Add a concise success/fail message for users and verify everything works across at least the latest Chrome, Safari, and Firefox. Acceptance criteria – Form submits without page reload issues or con...

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. ...

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...

Tengo una aplicación desarrollada con , Tailwind y shadcn que armé en Firebase Studio. Por ahora todo se almacena en el caché del navegador, así que los datos no se comparten entre dispositivos ni usuarios. Quiero que la información —gestión de usuarios, sus datos personales, historial de actividad y preferencias— quede en una base de datos MySQL accesible desde el backend. Me recomendaron Prisma como ORM y esa es la solución que deseo implementar. Lo que necesito: • Configurar un servidor MySQL (puede ser local o en la nube) y conectarlo al proyecto. • Crear el esquema en Prisma para usuarios, historial y preferencias, con migraciones listas para producción. • Desarrollar las rutas API / handler...

I already have a fully developed Android and iOS LMS IQ app. I am looking for an experienced mobile app developer to configure the existing codebase. This is not a new app development project. Tasks: - Connect the app to my server/backend - Change app logo, app name, and package/bundle ID - Make small guided edits as per provided documentation - Generate Android (APK/AAB) and iOS builds Clear documentation will be provided. This is a small and quick task for an experienced developer. Requirements: - Experience with Android and iOS app developer - Comfortable working with existing code - Familiar with app build and store requirements Timeline: Expected completion: 1–2 days Do not apply if you are proposing to rebuild the app. Apply only if you have experience with similar c...

I need a production-ready micro-SaaS built in Bubble that lets European importers work out their exact landed cost and margin, then export polished PDFs for their records or stakeholders. Phase 1 is fully specced and focuses on the core calculator, subscription handling and a clean, business-grade interface—clarity over fancy animations. Core features for this first release • Secure user login and account management • Stripe integration for recurring subscriptions and pay-per-export credit packs • Landed cost calculator covering product cost, FX, freight, customs duty, VAT, clearance fees, with instant net / gross outputs and optional selling-price-to-margin projection • Save, duplicate and revisit calculation scenarios • PDF export (gated as a pai...

production bugs fix Python back end developers who take up task and bugs You’ll start by replicating the problems in the live environment, trace the root cause across the intertwined front-end and server code db, then patch and test until everything behaves reliably again. Clear, commented fixes pushed to the repo and a brief post-mortem summarising what happened, what changed, and how to prevent a recurrence will mark the job complete. If you can jump in immediately, work fast, and are confident troubleshooting Python web stacks end-to-end, I’m ready to give you access and stay online for quick turnarounds on any questions. Remote work only by TeamViewer

I’m overhauling the sign-in flow for my private messaging product and need an engineer who can implement a rock-solid, token-based authentication system. The goal is simple: on the web client a user scans a QR code from the mobile app, receives a short-lived access token plus refresh token, and stays logged in until they choose to unlink that browser. Scope of work • Build the complete QR-code handshake between the mobile app (already in React Native) and the web client (React + Node). • Issue, sign, and validate JWTs with advanced security: asymmetric keys, rotating refresh tokens, strict audience / issuer claims, TLS everywhere. • Automatic, silent refresh of access tokens before expiry without interrupting the user. • Server-side endpoint to terminate a ...

I need a small “agent kit” built for WordPress that drops straight into an existing theme and immediately connects to HubSpot and an API plugin. I want the agent kit to be capable of reading a document and comparing the information with our API Core goals • Add a front-end component (widget, shortcode, or block—whatever is leanest) that collects user info. • Authenticate securely with API and HubSpot and push each submission into the right portal, list, and workflow. • Keep everything WordPress-native—use hooks, actions, and settings pages rather than hard-coding Please outline your approach, any previous HubSpot API work, and an estimated turnaround. I’m ready to move as soon as the plan looks solid.

The pdf got all needed details for now

I need a developer to quickly deploy an MVP on a DigitalOcean droplet. I already have: Tailwind HTML UI (prototype ready) MySQL database backup that needs to be imported I need help with: Importing the MySQL database to the droplet Minimal server configuration Connecting the UI to the database through a lightweight backend API (FastAPI preferred, Node acceptable) Basic deployment setup so core features run end-to-end Goal: Fast working MVP — simple, clean setup — single droplet — no overengineering Please include: Relevant deployment experience Estimated turnaround time Rate or fixed price

I'm looking for a web developer to create a simple portal for training videos. The portal should have the following features: Access Control: - Members-only access to all training videos Membership Features: - Subscription plans for access - User registration and login Subscription Plans: - Monthly subscriptions Ideal Skills and Experience: - Experience in developing membership-based websites - Familiarity with subscription management systems - Strong background in user authentication and access control Please include examples of similar projects in your bids.

Job Description: AI Implementation Specialist & Python Developer (Freelance) Contesto del Progetto SoldiExpert SCF, società di consulenza finanziaria indipendente , sta sviluppando un sistema proprietario di Intelligenza Artificiale Generativa per ottimizzare i processi aziendali. L'obiettivo è integrare i modelli LLM di Google all'interno dell'infrastruttura aziendale per gestire basi dati complesse e automatizzare task specialistici. Profilo Professionale Ricerchiamo un consulente freelance esperto in Intelligenza Artificiale e sviluppo Python per supportare l'implementazione di soluzioni avanzate di IA Generativa all'interno di un'infrastruttura aziendale esistente. Il candidato ideale possiede una solida esperienza nella configurazione di...

I’m building a responsive web app that shows where every train is right now, updating live on an interactive map. The core of the job is wiring reliable, real-time location data to a clean front-end that feels modern and snappy on desktop, mobile, and tablet alike. Here’s what I need from you: • A map-based interface that plots each train and refreshes automatically without manual reloads. • Search or filter so users can jump straight to a specific train or line. • Smooth zoom, pan, and click interactions consistent with a “modern and interactive” design ethos—subtle animations, hover states, and clear iconography rather than flat text lists. • Fully responsive layouts; breakpoints should feel native on phones, tablets, and large m...

I’m looking for an experienced mobile app developer or development team to build an MVP food delivery platform similar to Wolt / Uber Eats, tailored for Suriname, where cash on delivery is the primary payment method. This is a real business launch, not a demo or student project. I’m looking for a long-term technical partner. Project Details Country: Suriname Launch city: Paramaribo Industry: Food delivery / last-mile logistics Payment method (MVP): Cash on Delivery (mandatory) Scope of Work (MVP) Customer Mobile App (iOS & Android) User registration (phone number) Browse restaurants & menus Cart & checkout Address selection (GPS + manual) Payment method: Cash on Delivery Live order status (confirmed → preparing → on the way → delivered) Order histor...

Engagement type: Freelance / Contract Duration: Initial 3–6 months (extension possible) Location: Remote Start: ASAP Project overview We are looking for a senior, hands-on systems engineer to help design and build high-scale automation and simulation systems for transaction-heavy digital procurement workflows (simulated buying). The core challenge is building distributed, resilient systems that can orchestrate large numbers of concurrent, human-like actors interacting with well-known web-based platforms in a realistic and reliable way. This role is engineering-heavy and suited for someone who enjoys solving hard problems around scale, concurrency, reliability, and system behavior modeling. What you’ll be working on Designing and implementing distributed automation / simul...

I’m building a straightforward e-commerce site that lets shoppers browse products, add them to a cart, and complete a checkout flow that finishes with an order-confirmation screen (no online payment processing required). Key features I must see working end-to-end: • Product listings and search • Shopping cart and checkout (manual or COD completion) • User reviews and ratings A lightweight admin area for adding, editing, or removing products and moderating reviews will keep daily management painless, so please factor that in. The interface should be clean, responsive, and fast; I’m flexible on the tech stack as long as it’s well-documented and easy to maintain. When you deliver, I’ll test by: 1. Uploading a sample catalog and confirming ...

I’m planning an interactive, data-structures-and-algorithms-focused coding duel platform and I need a crystal-clear design and architecture proposal before any code is written. The end product must feel like a learning arena first and a competition second, so every technical choice has to support quick feedback, fairness and easy-to-follow analytics for students. Core experience to address The platform will present the same DSA question to two users simultaneously, lock them into a fixed countdown and stream their code through a real-time execution engine so they can see results (compile errors, test-case pass/fail, runtime, memory) without refreshing. While live chat or leaderboards may appear later, this first proposal must concentrate on that real-time duel loop and the backend...

We are seeking an experienced development vendor to build a production-grade web automation and data collection platform. This is a fixed-price project with a defined scope and an expected delivery timeline of 8–12 weeks. The system will include: 1. Browser automation modules using persistent profiles 2. Scheduler/orchestration engine 3. Structured data collection and storage 4. Deep data capture workflows 5. Administrative frontend for configuration and monitoring 6. AWS deployment (EC2-based) 7. Logging, concurrency handling, and error management Detailed specifications, BRDs, and proof-of-concept scripts will be provided to shortlisted vendors after NDA. Tech expectations: 1. Node.js / TypeScript 2. Playwright or Puppeteer 3. MySQL/PostgreSQL 4. React frontend 5. AWS deployment...

I need my existing Excel file rebuilt as a browser-based application written entirely in Node.js on the back end and React on the front end. The spreadsheet’s rows become records in a database, and every change made to any field must be timestamped and stored so that a full history is available for each record at a glance. Four roles will sign in—IT, manager, associate, and user—through a multi-tier authentication system. Some roles must be able to view and edit data, while others will have view-only access, so robust role-based permission checks are essential. In practice this means the app must let approved staff handle data entry and modification, allow managers to carry out data approval and reporting, and give IT the tools to perform user management without leaving ...

Nous cherchons à développer une application web interactive pour digitaliser l'ensemble de notre processus d'intermédiation entre les compagnies d'assurance et les clients. L'objectif est de réduire les délais de traitement, améliorer la transparence, sécuriser les données, et renforcer la crédibilité de notre société auprès des clients. Les fonctionnalités clés incluent : - Démarchage des clients. - Souscription et gestion des contrats. - Assistance en cas de sinistres. - Suivi médical/technique. - Gestion des règlements. - Reporting détaillé. - Administration complète. L'application devra être intuitive, s&eacu...

I’m putting together a complete delivery platform in Flutter and need a developer who can deliver the full ecosystem—separate mobile apps for customers, drivers, and vendors, plus a web-based admin console. Core scope • Customer app: smooth sign-up/login, browsing and cart, checkout with Paytm, UPI and Razorpay, live order tracking, push notifications via Firebase Cloud Messaging, coupon/discount code redemption, ratings and order history. • Driver app: real-time order dispatch, Google Maps-powered navigation, status updates (accepted / picked-up / delivered), earnings summary. • Vendor app: menu or product management, stock status, order acceptance/rejection, and payout tracking. • Admin console (with Admin and Support roles): user, vendor and driv...