...automatische Markierung, wenn > X Minuten ohne „FERTIG“ (Schwelle konfigurierbar). Technische Anforderungen (Vorschläge, offen für Alternativen) Tablet-App: Flutter oder React Native (Android‑Tablets im Kiosk‑Modus). Alternativ PWA mit Offline‑Cache (Service Worker), sofern Kiosk zuverlässig möglich. Backend: Echtzeit-geeignet (z. B. Firebase/Firestore, Supabase/Postgres mit Realtime, oder Node.js/NestJS + WebSocket). Echtzeit: < 1 s Latenz bei stabiler Verbindung. Zeitstempel serverseitig (UTC gespeichert, Anzeige in Europe/Berlin). Deployment: Docker‑Compose oder verwaltete Cloud (Firebase Hosting / Supabase / / Render o. ä.). Schnittstellen: REST/GraphQL für Events, WebSocket/Subscriptions für Live. Nicht‑funktiona...
We are a start-up that would like to offer a kind of regional delivery service. There should be a front end for the customer, a front end for the participating restaurant, a frontend for us as an admin overview and a backend. Technical stack ideally React, TypeScript, NestJS, AWS.
Es geht um die Entwicklung eines REST API Backend im NestJS Framework für ein CRM System.
...for engineers who can design their layer correctly first, then execute against a locked blueprint. I have five open roles. Apply for the one that matches your strongest skillset. THE PLATFORM STACK AWS (VPC, IAM, S3, RDS, ECS/EKS, KMS) · PostgreSQL · Neo4j or Neptune · OpenSearch · FastAPI or NestJS · React / · Airflow or Prefect · Docker · GitHub Actions · Kafka or SQS OPEN ROLES 1 — Backend Engineer (×2) Build the core API layer, service architecture, and data access patterns. FastAPI or NestJS. Must have experience with multi-service architectures and RBAC. Performance targets: search under 1.5 seconds, 500 concurrent users. 2 — Data Engineer Design and build the global data ingestion an...
...Build scalable backend integrations with PostgreSQL • Integrate and deploy applications using AWS infrastructure • Write clean, maintainable, and well-documented code • Collaborate with product managers, designers, and backend engineers • Optimise application performance and ensure responsiveness • Participate in code reviews and technical planning Required Skills • Strong experience with NestJs and React • Solid understanding of PostgreSQL • Experience deploying and managing applications on AWS • Understanding of REST APIs and modern web architecture • Familiarity with Git and CI/CD workflows • Strong problem-solving and debugging skills Nice to Have • Experience working on SaaS platforms • Knowledge...
...Build scalable backend integrations with PostgreSQL • Integrate and deploy applications using AWS infrastructure • Write clean, maintainable, and well-documented code • Collaborate with product managers, designers, and backend engineers • Optimise application performance and ensure responsiveness • Participate in code reviews and technical planning Required Skills • Strong experience with NestJs and React • Solid understanding of PostgreSQL • Experience deploying and managing applications on AWS • Understanding of REST APIs and modern web architecture • Familiarity with Git and CI/CD workflows • Strong problem-solving and debugging skills Nice to Have • Experience working on SaaS platforms • Knowledge...
...installations or complaints using the mobile application. 5. Engineers update service status and submit call closure reports. 6. Managers review service closure and track reports and PM schedules. These workflows follow the sales → installation → service → reporting lifecycle. Technology Preference Implementation should use modern scalable technologies, such as: Backend • Laravel / Node.js / NestJS / Django Frontend • React / / Vue Mobile Apps • Flutter or React Native (single codebase preferred) Database • PostgreSQL or MySQL Infrastructure • Cloud hosting (AWS / DigitalOcean / similar) • Docker-based deployment preferred Project Scope (Phase-1 MVP) Sales Module • Create and manage sales quotations • Update quotat...
Backend performance audit and optimization for the CRM API built with NestJS, TypeORM, MySQL, and Redis.
...installations or complaints using the mobile application. 5. Engineers update service status and submit call closure reports. 6. Managers review service closure and track reports and PM schedules. These workflows follow the sales → installation → service → reporting lifecycle. Technology Preference Implementation should use modern scalable technologies, such as: Backend • Laravel / Node.js / NestJS / Django Frontend • React / / Vue Mobile Apps • Flutter or React Native (single codebase preferred) Database • PostgreSQL or MySQL Infrastructure • Cloud hosting (AWS / DigitalOcean / similar) • Docker-based deployment preferred Project Scope (Phase-1 MVP) Sales Module • Create and manage sales quotations • Update quotat...
Role Overview Build and maintain a fintec...Build multi-level commission engine • Design optimized database schema for high-volume transactions • Implement authentication, OTP login, and security best practices • Deploy applications using cloud infrastructure and CI/CD pipelines Frontend Skills • React.js / or Flutter • HTML, CSS, JavaScript, TypeScript • API integration and responsive UI development Backend Skills • Node.js / NestJS or Java Spring Boot • REST API development and microservices • Payment gateway integration Database & Infrastructure • PostgreSQL / MySQL • Redis caching • Docker, Kubernetes Preferred Experience • payment platform development • Wallet systems and ledger-based accounting &bu...
...notifications Future‑ready for SMS integration 3.6 Admin Panel (Basic) Apptixx internal admin must be able to: Create/edit/delete projects Assign project owners Manage clients Manage lifecycle stages Upload documents 4. Technical Requirements 4.1 Preferred Tech Stack To ensure scalability and future modular expansion, the preferred stack is: Frontend React or TailwindCSS or MUI Backend Node.js (NestJS preferred) REST API (GraphQL optional) Database PostgreSQL Prisma or TypeORM Infrastructure AWS (ECS/Lambda, RDS, S3, CloudFront) OR developer may propose equivalent cloud architecture Authentication Auth0 or AWS Cognito (preferred) JWT-based session management 5. Deliverables (Phase 1) Fully functional client portal Three lifecycle modules (Build, Design, Real Estate) Document hub...
...Non-Functional Requirements (Performance, Scalability, UX) The #1 priority is speed and responsiveness with minimal loading screens and an architecture that can scale to millions of users and heavy navigation/activity. My preferred technical direction (this is the target requirement): * Frontend: (React) + TypeScript , using SSR/SSG/ISR depending on page needs. * Backend: NestJS (Node.js) + TypeScript (or an equivalent high-performance service layer such as Go for critical services), exposing a clean API (REST or GraphQL). * Database: PostgreSQL (optionally PostGIS for geo/nearby queries) + Redis for caching / or / MySQL no problems. * Caching & CDN: CDN (e.g., Cloudflare) + aggressive caching strategy for API and pages, optimized image pipeline...
A multi-tenant SaaS platform combining real-time uptime monitoring, synthetic transaction monitoring across 7 global regions, and a full incident management system with on-call scheduling, escalation, and status pages. TECH STACK: NestJS · React/ · Go (uptime bots) · Node.js + Playwright (synthetic) PostgreSQL + TimescaleDB · Redis + BullMQ · Kubernetes · Docker DELIVERY PLAN: Sprint 1 (Wk 1-2): Multi-tenant DB, Auth, RBAC (5 roles), Workspace API, CI/CD Sprint 2 (Wk 3-4): Go uptime bots, Playwright synthetic monitoring, 7-region K8s deployment, fault-tolerance, data pipeline & dashboards Sprint 3 (Wk 5-6): Incident management, on-call scheduling, escalation (email + push), status page, tenant UI + mobile app, gamificatio...
...dashboards using React / Next.js. • Backend Development – Implement APIs, authentication, project workflows, messaging, referral system and analytics services. • Testing & Deployment – Conduct QA testing, fix issues and deploy the platform on the cloud environment. 3. Technologies Components Stack UI/UX Designer Figma Web Frontend React.js / , TypeScript Backend Node.js (Express / NestJS) or FastAPI Database PostgreSQL Automation Layer ● AI-assisted proposal drafting ● Pricing rules engine Authentication JWT (JSON Web Tokens) Infrastructure AWS / GCP / Azure Cloud 5. Third Party Expenses The project budget does not include expenses and third-party tools- Third Party Domain Registration Hosting (AWS and Infrastructure) ₹800 – ₹1500 yearly ...
...React Native, while the backend services are developed using NestJS and AWS cloud infrastructure. The platform was originally built using AWS Lambda (serverless architecture), but due to performance limitations, cold start latency, and stability issues, the application experienced delays in launch readiness. We are now migrating the backend architecture from AWS Lambda to AWS EC2-based services to ensure better performance, reliability, and scalability for production. The project also requires debugging and fixing issues in the existing React Native mobile application, along with improving backend stability and API performance in the NestJS backend. Key Responsibilities • Review the existing React Native mobile application and NestJS backend codebase • Ide...
...and develop backend APIs • Integrate white-label GPS tracking system • Implement real-time bus location ingestion • Develop digital ticketing and fare management system • Integrate payment gateway • Implement data analytics and reporting • Design scalable database architecture • Support high telemetry data ingestion (~2.5M GPS records/day) Technology Stack Preferred experience with: • Node.js (NestJS) or Java Spring Boot • PostgreSQL • Redis • Kafka or MQTT • REST APIs • WebSockets • Cloud deployment (AWS / Azure / DigitalOcean) Nice to Have • Experience with transport systems • Experience with IoT or GPS telemetry • Payment gateway integration • High-scale backend systems Project Durati...
...Title: Senior Full-Stack Developer Needed – NestJS + React/TypeScript Fuel Levy Pricing Engine for Rideshare Platform Job Description: I am looking for a highly skilled full-stack developer to build the first production-ready version of a vehicle-specific fuel levy / energy levy pricing engine for my rideshare platform based in Queensland, Australia. This system must be designed as a secure backend-driven pricing engine, where the commercial logic remains private on the server and is not exposed to the browser. The purpose of the system is to calculate a fair trip-based fuel or energy levy using approved vehicle data and live/local fuel pricing inputs, with support for petrol, diesel, hybrid, and EV vehicles. The backend must be built using Node.js, NestJS, TypeScri...
...deliver high-quality features. Write clean, maintainable, and well-documented code. Participate in code reviews, testing, and CI/CD workflows. Troubleshoot, optimize, and improve application performance and reliability. Tech Stack (Experience with some — not necessarily all — of the following is expected.) Frontend: React React Native HTML5, CSS3 JavaScript / TypeScript Backend: Node.js (NestJS or Express) REST and/or GraphQL APIs Database: PostgreSQL (or other relational databases) ORM tools (Prisma, Sequelize, TypeORM, etc.) DevOps & Tools: Git & GitHub CI/CD pipelines Cloud platforms (AWS, GCP, or Azure) What We’re Looking For: - 3+ years of professional experience as a Full Stack Software Engineer. - Strong proficiency in JavaScript/TypeScrip...
I already have a production-ready library management platform running on a front end with a NestJS API, containerised with Docker and deployed on AWS (files are stored on S3). The missing piece is a compact student-tracking module that: • scans a student’s unique QR code on entry and exit • records the exact timestamps, the library section they visit, and calculates total duration of stay • appears seamlessly inside the current interface (no separate UI) The work involves adding the relevant pages/components in , extending the NestJS services and database schema, wiring in any AWS resources you need, and shipping the whole thing with full Jest unit/integration tests. Code quality must match the existing clean, typed, linted codebase; every new co...
I’m putting together a full-stack user management system built on NestJS for the backend and React for the frontend. The core functions are already defined; what I need is an experienced full-stack developer to bring them to life in a clean, scalable codebase. Scope of work • Secure authentication: register, login, forgotten-password flow, all powered by JWT. • Role-based access control with two roles—Super Admin and User. • Super Admin dashboard to list, create, update and delete users, as well as assign roles. • User dashboard where end-users can manage their profile, change their password, tweak account settings and trigger email-based password resets. • Robust validation and guards on every exposed API route. • PostgreSQL is...
Agwa Travel OS — MVP Development (Architecture‑First Build) Agwa Travel OS is a unified travel platform built on a modern, cloud‑ready stack: Node.js + NestJS services, React/ front end, PostgreSQL, Redis, and ElasticSearch running on AWS. The technical architecture, module boundaries, API contracts, and phased milestone plan are already fully documented. What I need now is a disciplined, architecture‑first development team that can execute cleanly and stay with the product long term. Scope of the MVP The first release focuses on delivering the complete core travel flow across multiple verticals: 1. Search → Book → Pay Users must be able to: Search flights, hotels, cars, and experiences View real‑time availability and pricing Complete booking and checkout using ...
...in mind, as it will later support additional portals such as mortgage/loan and classified marketplace platforms sharing a structured database ecosystem. We are attaching two detailed requirement documents. Please review before bidding. Main Skills Required: * Strong Full-Stack Development Experience * Modern Frontend Framework (React / / Vue preferred) * Backend Development (Node.js / NestJS / Laravel / Django or similar) * Database Architecture Design (PostgreSQL / MySQL) * Scalable SaaS Architecture Design * AI Integration (OpenAI or similar LLM APIs) * Resume Parsing / NLP Implementation * Payment Gateway Integration (Stripe, QR payments) * WhatsApp Business API Integration * Email Automation Systems * Admin Dashboard & Role-Based Access Control * Analytics & Repor...
...Build scalable backend integrations with PostgreSQL • Integrate and deploy applications using AWS infrastructure • Write clean, maintainable, and well-documented code • Collaborate with product managers, designers, and backend engineers • Optimise application performance and ensure responsiveness • Participate in code reviews and technical planning Required Skills • Strong experience with NestJs and React • Solid understanding of PostgreSQL • Experience deploying and managing applications on AWS • Understanding of REST APIs and modern web architecture • Familiarity with Git and CI/CD workflows • Strong problem-solving and debugging skills Nice to Have • Experience working on SaaS platforms • Knowledge...
...subscription management • Coupon creation & management • Basic analytics overview • Media upload system ⸻ Payment Integration • Apple In-App Purchases (iOS) • Google Play Billing (Android) • RevenueCat integration (preferred) • Coupon support in upgrade flow • Secure subscription validation ⸻ Technical Requirements • React Native • Clean architecture • Scalable backend (Node.js / NestJS / Firebase / similar) • Secure API design • Well-structured database • No AI-generated messy code • Full source code ownership • Proper documentation • Code must be maintainable for future developers ⸻ Not Included in MVP (Future Expansion) • AI video analysis • AI chatbot ...
...• PDF export • Sage integration first → Xero later E) File Upload / Import • CSV/XLSX upload for subcontractor invoices • Validate fields, duplicates, missing info • Track manual vs file-uploaded invoices F) Reporting • Job summary, material usage, profit analysis • Timesheets & payroll export • Engineer GPS history / route playback ⸻ 2️⃣ Technical Requirements • Backend: Node.js + NestJS • Web Frontend: React + TypeScript • Mobile App: React Native (iOS + Android) • Database: PostgreSQL • Realtime cache / GPS: Redis • Hosting: AWS + Docker + CI/CD • Accounting integration: Sage first, Xero later • Notifications: Push + Email • GDPR-compliant storage and encryption ⸻...
...Profile and booking history • Push notifications ⸻ Web Application Public Website: • SEO-optimized listing pages for pubs and events • Marketing landing pages Admin Panel: • Create and edit pubs • Create and edit events • Upload images and videos • Manage availability and booking limits • View and manage bookings • Manage feature flags ⸻ Backend Requirements Preferred stack: Node.js (NestJS or Express) with PostgreSQL. Must include: • REST APIs • Role-based authentication (user/admin) • Booking engine (entry and table logic) • QR code generation and validation logic • Media handling (S3 or similar cloud storage) • Analytics event tracking • Push notification integration •...
...Hosting and Deployment: Start on AWS (Elastic Beanstalk or ECS) or Vercel (if is used). Scalable to private servers when demand increases. Embedding & URL Management: Each tenant should receive either a standalone portal URL (e.g. ) or embeddable components (iframe or JS widget). Preferred Tech Stack: Frontend: React (with ), Tailwind CSS Backend: Node.js (NestJS or Express), or Laravel if PHP is preferred Database: PostgreSQL (with tenant schema separation) or MongoDB Auth: Firebase Auth, Auth0, or custom JWT-based system DevOps: Docker, GitHub Actions, AWS/GCP CI/CD pipeline Deliverables: Fully functional MVP covering all listed modules Technical documentation for onboarding additional developers Admin dashboard for tenant and system-level controls
...engagement with room to grow as the platform scales. **Core Responsibilities** - Design and build scalable backend architecture using NestJS and TypeScript - Database design and optimization with PostgreSQL + TypeORM / Prisma - Implement RESTful APIs, JWT authentication, CQRS, and Clean Architecture principles - Integrate Firebase Auth and push notifications - Set up and manage MinIO / AWS S3 file storage - Containerization and deployment management using Docker - Collaborate with frontend team on API integration - Migrate legacy C#/.NET codebase to Node.js - Write unit and integration tests; participate in code reviews **Tech Stack** - **Backend:** Node.js, NestJS, TypeScript, TypeORM / Prisma - **Database:** PostgreSQL, Redis - **DevOps:** Docker, Docker Compose, C...
PHASE 1 – Automated Tender Discovery + CRM + AI Snapshot Goal: Fully automated ingestion + structured CRM + AI tender analysis. Preferred / Required Tech Stack (Phase 1): Frontend: React + TypeScript ( preferred) Backend/API: Node.js (NestJS/Express) or Python (FastAPI) Database: PostgreSQL (mandatory) Vector store: pgvector (inside PostgreSQL) AI: OpenAI API (must be modular so we can swap provider later) File storage: S3-compatible object storage (AWS S3 / Cloudflare R2 / similar) OCR: Tesseract (open-source) acceptable for MVP Scheduler: cron/worker-based job runner (runs 09:00 / 12:00 / 15:00 GMT) Deployment: Dockerised (mandatory) 1. Saved Search Presets Users define: Category / CPV codes Keywords Counties (multi-select, all 26) Tender type filters Prese...
...structured, intelligent case preparation system — not a chatbot, not a document summariser, and not a client questionnaire tool. CRM-style dashboard wireframes will be attached. 2. Mandatory Technology Stack To avoid repeated clarification questions, the following stack is preferred and largely mandatory. Preferred Stack Frontend: React + TypeScript ( preferred) Backend: Node.js (NestJS or Express) OR Python (FastAPI) Database: PostgreSQL (Mandatory) Vector Store: pgvector within PostgreSQL AI: OpenAI API (must be modular so provider can be swapped later) Storage: S3-compatible object storage Deployment: Dockerised (Mandatory) Non-Negotiable Requirements Multi-tenant architecture (firm_id enforced at database level) RAG-based AI Query Console (not simp...
...is built using React with TypeScript. The backend is developed with NestJS, and PostgreSQL is used as the database. The project also includes Shopify payment integration for checkout processing. Scope of Work: You will debug and fix the payment issue occurring during checkout and ensure that orders are processed correctly after payment. You will test the current Shopify integration to confirm everything works properly. In addition, you will make minor responsive adjustments on mobile devices, such as fixing spacing, alignment, or button sizing issues. The desktop design should remain unchanged. Requirements: You should have experience working with Shopify payment integrations and be comfortable debugging React and NestJS applications. You must be able to test the curre...
...targeting the Libya market, with planned expansion into Egypt and GCC. The platform will include: • Flights booking integration • Hotels booking integration • eSIM purchase module • Payment gateway integration • WhatsApp operational support integration • Full admin portal • Scalable cloud infrastructure We are looking for a Senior Backend Developer with strong experience in: • Node.js (NestJS preferred) • Designing scalable REST APIs • Third-party API integrations (travel or similar complexity preferred) • Transactional booking systems • Payment gateway integration & webhook validation • Caching strategies (Redis) • Clean modular architecture • Documentation (Swagger/Open...
...secure admin web dashboard. The user journeys and business logic are already defined. I am now looking for an experienced developer or team capable of delivering production-grade software with scalable architecture and clean code standards. Technical Expectations Cross-platform development (Flutter or React Native preferred; justify your stack choice). Structured back-end architecture (Node.js/NestJS, Supabase, Firebase, or similar). RESTful API design with proper authentication and role-based access control. Scalable database design (PostgreSQL preferred). Codebase delivered via Git repository with structured commits. Clean separation between presentation, business logic, and data layers. Mobile Experience (Customer App) Users must be able to: Register / log in secure...
...application layer. This is insufficient for long-term scalability and compliance requirements. We are rebuilding from the ground up with strict enforcement across: - Application layer - Infrastructure layer - Database layer (PostgreSQL RLS) The goal is to establish a defensible, audit-ready architecture that prevents cross-tenant leakage and supports long-term scale. Target Stack (Locked): - Backend: NestJS (Node.js / TypeScript) - Database: PostgreSQL (single database, RLS enforced) - Infrastructure: AWS (ECS Fargate, SQS, S3, Redis, RDS) - Architecture style: Event-driven, multi-tenant SaaS Scope of Work (Architecture Deliverables): 1. Multi-Tenant Isolation Model - PostgreSQL RLS policies, Tenant context propagation (JWT to DB session), Cross-tenant leakage prevention strat...
...highlighting (low scores) Dashboard with charts and statistics PDF report generation (including images, signature, company intro) Authentication (users can access only their own data) Responsive RTL UI design Technical Requirements The freelancer should propose a modern and scalable tech stack. Preferred direction: Frontend: React / (or similar modern framework) Backend: Node.js / NestJS / Express (or equivalent) Database: PostgreSQL / Firebase / Supabase / similar PDF generation capability Secure authentication implementation Cloud deployment experience Clean architecture and scalable structure are important. Design Requirements Full RTL Hebrew support Modern UI with card-based layout Responsive (mobile, tablet, desktop) Score-based color indicators Fixed bot...
...for an experienced development team (or senior full-stack developer) to build a modern, scalable dating platform (web only, fully responsive). This is NOT a WordPress project and NOT a basic template customization. I am looking for a serious MVP built on a modern, scalable stack that can handle high traffic volumes. Technical Requirements Frontend: React ( preferred) Backend: Node.js (NestJS or similar structured framework preferred) Database: PostgreSQL or equivalent scalable solution Real-time features: WebSockets (for chat) Cloud-ready architecture (AWS / GCP / similar) Clean, modular architecture Scalable infrastructure (should handle high concurrent users) I do NOT want: WordPress No-code platforms Basic PHP scripts Low-quality marketplace clones Project Scope...
...interface EMI display & repayment screens Analytics dashboards API integration DevOps & Deployment AWS deployment (EC2 / ECS RDS configuration SSL setup Production hardening Monitoring & logging setup Tech Stack Mandatory: MongoDB (if needed for flexibility modules) or PostgreSQL experience React.js Node.js JWT authentication RESTful API design AWS deployment experience Preferred: NestJS experience Redis caching Payment gateway integration experience Fintech or lending product experience Understanding of KYC workflows Role-based access control systems Important: Fintech Security Awareness You should understand: Secure token management Data encryption principles Payment webhook validation Audit logging Handling sensitive user data Production-ready API structuring...
...(webhooks, idempotency, reconciliation) • Affiliate + sponsorship revenue tracking • Role-based access (Listener, Creator, Advertiser, Admin, Moderator) • Standard podcast features (episodes, comments, subscriptions, uploads, playlists, etc.) • App Store & Play Store submission • must include 30 days after before monthly payment for any issues that may arrive ⸻ Preferred Backend Stack • Node.js (NestJS preferred) • PostgreSQL • Redis • Stripe • AWS We are open to alternative stacks if you clearly justify scalability, security, and store compliance benefits. ⸻ Important The top 5 shortlisted candidates will be given 48 hours to review the existing frontend codebase before final commitment. This ensures: • You are...
Repo setup, monorepo structure, ESLint/Prettier config 0.5 days Docker Compose local environment (NestJS, React, Postgres, Redis) 1 day Database schema design & Prisma setup 1.5 days
...* Recruitment basic ATS * Excel bulk upload * Admin billing panel * Role-based permissions Phase 2 & Beyond * Performance management (OKR, 360 reviews) * AI recruitment tools * Predictive analytics * Employee engagement modules * Learning integrations * Advanced automation workflows Preferred Tech Stack We are open to suggestions, but prefer: Frontend: * React / Backend: * Node.js (NestJS preferred) / Django Database: * PostgreSQL Infrastructure: * AWS / DigitalOcean / GCP * Dockerized deployment * CI/CD setup Must be: * API-first architecture * Modular codebase * Proper folder structure * Documented APIs Budget We are looking for: * Cost-efficient build * Phase-wise commercial proposal * Clear breakdown of: * Development cost * Infrastructure recommendation ...
...down with production-grade security. The single most important item is a bullet-proof authentication flow based on Google OAuth that cleanly separates Admin and User roles and protects every endpoint. What the work entails You will design the database schema, craft a modular architecture, and expose well-documented APIs that can scale as new micro-services are added. Either Node.js (Express/NestJS) or Python (FastAPI/Django REST) is fine; just keep the structure clear, testable, and future-proof. Containerise everything with Docker, automate deployment via CI/CD, and supply infrastructure-as-code—AWS or GCP are my likely hosts, so familiarity there is key. Security best practices (OWASP, rate limiting, encrypted secrets) must be baked in from the start. Deliverables &...
...focado em aumento de ticket médio e clientes premium. Cores: Preto (#0B0B0B) Dourado (#C6A84A) Azul Profundo (#0F1C2E) Conceito do Logo: Escudo minimalista (autoridade) Letra “E” estilizada formando gráfico de crescimento Detalhes dourados (luxo e alto padrão) ESTRUTURA TÉCNICA COMPLETA (PRONTA PARA DESENVOLVIMENTO) Arquitetura Frontend Web: App Mobile: React Native Backend: NestJS Banco: PostgreSQL Cache: Redis Mensageria: WhatsApp Cloud API Hospedagem: AWS / Digital Ocean Estrutura SaaS Multi-Tenant Banco com: users companies tenants clients messages sales automations subscriptions Cada registro vinculado a: tenant_id Isolamento lógico + possibilidade futura de banco separado por cliente enterprise. Seguranç...
...Printing Kitchen print happens server-side automatically after order created Kiosk print request is sent from backend to kiosk OR kiosk calls local print agent: POST Recommended: Kiosk app calls print agent directly after receiving orderNumber from backend. 9) Recommended tech stack Frontend: (React) for kiosk + admin Backend: Node.js (Fastify/Express/NestJS) Database: PostgreSQL + Prisma Printing: Kitchen: raw TCP/ESC-POS library Kiosk: Windows print agent (Node/Electron or .NET service) 10) Deployment Best practice Local server (mini-PC) hosts backend + DB Kiosk accesses backend via LAN IP Admin panel accessible from office PC/tablet on same Wi-Fi Kitchen printer on same Wi-Fi with static IP...
...authorization, and licensing/subscription management Building async job processing pipelines for document and file handling Developing APIs that power a customer-facing web dashboard Database design, optimization, and migration strategy CI/CD pipelines and containerized deployments 5+ years backend development Strong proficiency in Python (FastAPI or Django) and/or Node.js/TypeScript (Express, NestJS) Solid PostgreSQL/NoSQL experience (schema design, indexing, query optimization) Message queues and async processing (RabbitMQ, Kafka, Celery, or Bull) Docker and container orchestration basics RESTful API design and implementation at scale Git-based workflows (branching, PRs, code reviews) Security-conscious development practices Preferred / Bonus React / experience (full-stack ca...
...PostgreSQL with the TimescaleDB extension to manage millions of historical performance metrics via Hypertables. Job Queuing: Manage background scanning tasks using Redis and BullMQ to ensure horizontal scalability. API Design: Develop RESTful endpoints for on-demand scans, time-series data retrieval, and automated white-label PDF generation. Technical Requirements: Node.js / TypeScript Mastery (NestJS or Express preferred). Expertise in Puppeteer/Playwright and bypassing WAFs (Stealth plugins/Residential Proxies). Strong experience with PostgreSQL and time-series extensions (TimescaleDB/InfluxDB). Experience with for a performant frontend dashboard. Deliverable: A fully functioning MVP capable of handling 5,000+ daily scans across 20+ global nodes. Milestone Payment...
...include a simple but powerful CRM dashboard with lead stages, tagging, lead scoring, and performance tracking. The platform must also support appointment booking with calendar integration, automated confirmations, and reminder messages. A visual or rule-based automation workflow builder is preferred so users can customize follow-up sequences easily. The preferred tech stack includes Node.js or NestJS for backend, React.js or for frontend, PostgreSQL for database management, and Redis for handling automation queues and triggers. WhatsApp Cloud API integration is required for messaging automation, and Stripe should be integrated for subscription billing with plan-based feature restrictions. The architecture must be multi-tenant, secure, scalable, and cloud-deployable (AWS or Digi...
...and scalability. Project Overview Project Type: E-Commerce Mobile App & Website Current Stage: Advanced Development / Pre-Launch Optimization Engagement Model Required: Part-Time / Dedicated Support Existing Technology Stack Our platform is built using: Backend: Node.js, NestJS Frontend (Web): React Mobile App: Flutter Cloud Infrastructure: AWS Storage & Assets: Amazon S3 Resource Requirements We are looking for agency support for the following roles (part-time / shared allocation acceptable): Backend Developer (Node.js / NestJS) Frontend Developer (React) Flutter Developer DevOps / AWS Support CTO / Technical Architecture Advisory (strategic oversight as needed) Scope of Work The engagement will primarily focus on: ✔ Feature refinements & enhancements ✔ Bug fi...
Project Title Build Enterprise Reverse Auction Procurement SaaS Pla...Service Provider) Vendor item registration (Item Name, Description, HSN Code) RFQ module Real-time Reverse Auction engine with: Open / Blind / Rank-only modes 2-minute auto-extension Buyer sees vendor names Vendors cannot see competitor names NDA module Hybrid pricing (Per auction + subscription) Admin dashboard Audit logs Preferred Tech Stack Frontend: / React Backend: Node.js (NestJS preferred) Database: PostgreSQL Real-time: WebSocket () Cache: Redis Hosting: AWS Deliverables • Fully functional SaaS platform • Source code • AWS deployment • Documentation • 3 months support Looking For Experienced SaaS/real-time system developers with strong backend architecture and AWS ex...
...SVG rendering Strong JavaScript / TypeScript logic Experience building interactive UIs: Drag and drop Resize handles Coordinate positioning Good understanding of: Geometry calculations Coordinate systems (x, y, width, height) Scaling and proportions Collision detection (prevent overlap) Ability to structure clean modular code Backend / Integration (Basic Required) Ability to integrate REST APIs (NestJS backend) Handle structured JSON layout schemas Basic understanding of state management Good to Have (Bonus) Experience in: Floor plan tools CAD-style interfaces Construction or architecture tech Knowledge of: Constraint-based layout logic Space allocation algorithms Experience integrating OpenAI APIs Experience exporting Canvas to PNG/PDF Responsibilities Design and implement a r...
We are developing a complete marketplace ecosystem that includes: Website ( (React Framework) Mobile App buyer and seller (iOS & Android) ( React native ) Store Owner Dashboards (React (or ) Advanced Admin Control Panel (React (or ) Digital Promotional Magazine (PDF System) Backend (Node.js (NestJS or Express) Our goal is to build a scalable digital mall where businesses can sell wholesale and retail products while benefiting from powerful marketing and management tools. Platform Owner (Admin) Features As the platform owner, you will have full strategic and financial control. Coupons & Campaign Management Create global coupon codes (fixed or percentage) Apply coupons to specific stores or categories Control expiration dates and usage limits Feature selected stores
