NoSQL Couch și Mongo Jobs

I have prepared a concise technical exercise that covers the complete workflow of a modern web application, from database layer to browser. The specification document is already written and will be shared immediately after we start; please follow it exactly and return a fully working solution. Scope • The assignment is strictly full-stack, so plan to wire up everything end-to-end. • Frontend must be built with React. Feel free to enrich it with hooks, TypeScript, Redux Toolkit or any other React-friendly utilities you prefer, as long as setup and usage are clear. • Backend must run on Node.js. You may structure it with Express, NestJS or a lightweight custom framework; again, keep dependencies reasonable and document any architectural decisions. • Persist data ...

Tengo el prototipo de una plataforma de intercambio de alojamiento entre hoteleros de Latinoamérica prácticamente lista y ya cuento con varios clientes dispuestos a usarla en cuanto salga al aire. El frontend está construido en React y el backend en Node.js; necesitamos a alguien que domine ambos mundos para dar el último empujón: cerrar funcionalidades, depurar el código, probarlo a fondo y ponerlo en producción. Las piezas que faltan se centran en dos módulos clave: el sistema de reservas y la pasarela de pagos. El flujo general ya está esbozado, pero aún requiere integración con los servicios externos definidos, ajustes de lógica de negocio, validaciones de disponibilidad y manejo eficiente de transacci...

I am looking for an experienced Django developer to implement a clean, scalable, and production-ready multi-tenancy architecture for my existing Django application. The application is already fully developed. I am not looking for new features or changes to the business logic. My goal is to refactor the architecture so that each customer (tenant) has their own isolated PostgreSQL schema, ensuring complete data separation. Requirements Implement schema-based multi-tenancy using PostgreSQL. Each customer must have their own dedicated PostgreSQL schema. Each customer must also have their own subdomain (e.g., , ). Automatically resolve the tenant based on the incoming subdomain and switch to the corresponding PostgreSQL schema. Provide a clean onboarding process that creates a new tenant, provi...

My site runs on a Node.js back-end with a MongoDB database, and I’m ready to refresh both the look and the logic. On the front end I want clear UI/UX improvements—snappier interactions, cleaner visuals, better flow—and a handful of new features folded into the existing layout rather than a wholesale redesign. Behind the scenes some routes, controllers, and data-handling logic also need tweaks so the new interface changes stay in sync with the database. You’ll work directly in the current codebase (Git repo access will be provided) and hand back tested, production-ready updates. Final deliverables should include the modified source, any new components or utility files, and concise setup notes so I can deploy without surprises. If you’re comfortable iterating ...

I am building a FlutterFlow-based mobile app and need a developer who is comfortable working mainly on the server side. Your first task will be to design and provision a solid MySQL database, map out a clear schema and set up all tables, indexes, and relationships so the app can scale without performance issues. Once the data layer is ready, I’ll rely on you to wire it to FlutterFlow through clean, well-documented APIs. The project involves three distinct integration paths: • Third-party services that supply user-generated content • A small set of internal REST endpoints we already use on the web version • A payment gateway to handle one-time and recurring purchases All endpoints must return JSON, follow REST conventions, and include basic rate limiting and...

The mobile front-end is ready; now I need a solid Node.js backend that exposes clean REST APIs, persists data in PostgreSQL, and secures every call with JWT-based authentication. You will design the schema, write the services, wire up the auth flow, and make sure everything runs smoothly in test and production environments. Familiarity with cloud deployment (AWS, GCP, or similar) will help you hit the ground running, but the immediate focus is on well-structured code, documented endpoints, and reliable integration with the existing React Native UI. Key deliverables • Fully documented REST API (OpenAPI/Swagger preferred) • PostgreSQL schema & migration scripts • JWT auth implementation with role-based authorization hooks • Environment-specific configs plus a...

Freelance Full Stack Developer Needed to Build AI-Powered Clinic Management Software (DrMate) Project Overview: I am looking for an experienced Full Stack Developer/Freelancer to help build DrMate, a modern clinic management and telemedicine software designed for doctors and healthcare clinics. The goal is to create a lightweight, scalable SaaS platform that helps doctors manage their clinics digitally, including patient records, appointments, consultations, billing, and daily operations. Key Features Required (Initial Version/MVP): * Doctor and clinic registration/login system * Patient management (digital patient records) * Appointment scheduling and calendar management * Online consultation support (video/chat integration) * Prescription management * Medical history tracking * Bill...

PERFECCITY MVP – Full-Stack Web Application Development Project Overview We are building PERFECCITY, a web-based platform for modular wall panel and furniture design, sales, quotation, and manufacturing. The MVP focuses on completing the entire customer journey from lead generation to manufacturing package creation. Tech Stack - React + TypeScript - Node.js (Express/NestJS) - PostgreSQL - (GLB Viewer) - AWS S3 (File Storage) - JWT Authentication - PDF Generation - REST APIs MVP Features - Role-based authentication (Admin, Consultant, Designer) - Product SKU Master - Design Library with GLB model upload - Lead & Project Management - Customer Consultation Workflow - 3D Design Viewer with material switching - Configuration & BOM Engine - Recommendation Engine - Automated...

We are looking for a talented Fullstack Developer to join our small remote team. This is a long-term, ongoing role (not just a one-time project). You will work with us on building and maintaining web applications from idea to deployment. Key Requirements (Must-Have): ✅ Language: FULLY BILINGUAL in English and Spanish (professional fluency – C1 or above). You will be interviewed and tested in BOTH languages. ✅ Frontend: Strong experience with React.js, , or Vue.js. ✅ Backend: Strong experience with Node.js () or Python (Django/Flask). ✅ Databases: Experience with SQL (PostgreSQL/MySQL) or NoSQL (MongoDB). ✅ Tools: Git, GitHub, and comfortable with remote collaboration tools (Slack, Zoom, etc.). Nice-to-Have: Experience with Docker, Kubernetes, or cloud platforms (AWS/GCP/Azure...

I'm a Full-Stack Developer with 8+ years of experience designing, building, and scaling web applications across the MERN and modern JavaScript ecosystem. My work spans end-to-end product engineering — from architecting backend services and APIs to building responsive, performant frontends used by real users in production. My expertise lies in backend engineering, RESTful and event-driven architectures, database design, and cloud infrastructure. I also work extensively across frontend systems, state management, and CI/CD-driven delivery. Over the years, I have: Built and maintained scalable backend services using Node.js and Express, handling REST APIs, authentication, and business logic for production applications Developed dynamic, responsive frontends using React.js and , inc...

Turkish Senior React + Node Developer for an AI EdTech Platform (Türkiye only) ReadMate is an adaptive English reading platform for schools, running as a Teknokent R&D project. The MVP works. We need a senior developer to extend it and take it to production. Stack: React, Node.js / Express, PostgreSQL, REST APIs, LLM (AI) integration. Scope of work: Extend the existing React + Node/Express + Postgres codebase Build out AI features: on-demand text simplification and an end-of-book AI debate tutor Harden the platform for school deployment: role-based access across six user types, analytics dashboards, testing, CI/CD [Estimated hours per week / project duration] You must have: 5+ years of senior-level React and Node.js/Express work Strong PostgreSQL schema design and query optim...

I’m looking for a skilled Node.js developer who can start right away and take full ownership of building a production-ready web application. The core goal is clear: deliver a solid, scalable Node.js backend that serves a modern web interface. Here’s what I need from you: • Set up the project structure (preferably Express or a comparable lightweight framework) with clean, well-commented code. • Advise on and integrate the most suitable database layer. • Establish routing, middleware, and any environment configuration required for a smooth deployment flow (dev, staging, production). • Collaborate with me to refine any missing feature details and map them into a clear sprint plan so that we keep velocity high. I can share the domain concept and user flo...

I'm seeking an experienced full-stack developer with over 5 years in the industry for a high-stakes project. Key Requirements: - Expertise in database management is crucial. - Proficiency in at least one modern tech stack (React & Node.js, Angular & Java, or Vue.js & Python) is preferred. Ideal Skills: - Strong problem-solving capabilities - Experience with cloud services - Familiarity with CI/CD pipelines - Excellent communication skills If you have a proven track record in similar projects, I’d love to hear from you.

I want to launch a lean but fully working social network that feels familiar to Instagram users and is built entirely with React on the front-end, Node.js on the back-end and PostgreSQL as the data store. Core features I need from day one are: photo and video sharing (upload, display, feed), real-time direct messaging between users, and rich user profiles with avatar, bio and basic follow / unfollow mechanics. For authentication I only need a solid email-and-password flow right now, but the codebase should be organised so that OAuth providers can be slotted in later without a full rewrite. Please structure the project as a modern SPA: React (hooks, context or Redux if you prefer), responsive UI, lazy-loaded media, and clean routing. The server may use Express or a comparable Node fra...

We are looking for an experienced Full Stack Software Developer to join our remote engineering team. You will work on the development of scalable web applications, collaborate with designers and product managers, and contribute to the entire software development lifecycle. Responsibilities Design and develop modern web applications. Build RESTful APIs and backend services. Develop responsive frontend interfaces. Write clean, maintainable, and well-tested code. Participate in code reviews. Troubleshoot and resolve software issues. Optimize application performance and security. Collaborate with cross-functional teams using Agile methodologies. Required Skills 4+ years of professional software development experience. Strong knowledge of JavaScript and TypeScript. Experience with React. Exper...

I’m kicking off a brand-new, green-field build and need a senior engineer to own the full MERN + NestJS stack. The product is completely custom—neither an eCommerce site nor a social network—so I’m expecting architectural input as well as hands-on coding. Core scope • Implement secure user authentication and role-based management (JWT, OAuth or similar). • Set up robust data analytics and reporting pipelines so end-users can visualise key metrics in-app. • Wire the application to several third-party services (payment, email, and one proprietary REST API) with clean, maintainable integrations. Tech landscape Frontend will be React with modern hooks; backend services will run on Node/NestJS, exposing REST (and possibly GraphQL) endpoints backed by Mon...

Our occupational-health booking system is already live and about 99 % feature-complete, yet every time code is touched new problems appear. Built in Google AI Studio with a Node.js back end and a React front end, it now needs a steady pair of hands to make it production-reliable and to keep evolving it over the long term. Current pain points • Frequent bugs and crashes, especially around booking appointments, reviewing questionnaires, and granting certificates. • User-interface glitches that surface across every portal—client, company, and medical-technician views. What I need from you 1. Quickly audit the existing repo, trace the crash sources, and patch them without introducing regressions. 2. Clean up the React components so each interface feels consistent and ...

Title: Build AI-Powered Dermatology Clinical Decision Support Demo Website (LLM Integration) Description I am a medical doctor developing a proof-of-concept (demo) AI-powered dermatology clinical decision support system for an innovation competition. I have already completed: System architecture Dermatology knowledge base Clinical workflow Decision logic I need an experienced developer to build a demo web application. This is NOT a production healthcare application. Required Features Responsive web application Patient demographic input (Age, Gender) Chief complaint input AI integration (OpenAI GPT-4.1 / GPT-5 or Google Gemini) AI should use my custom dermatology knowledge base Sequential workflow: History Taking Physical Examination Investigation Recommendation Users should not be able to...

We recently upgraded our ERP system's frontend to Angular 20.3.19 and backend to ASP.NET Web API 2 and .Net Framework 4.7.2 Since the upgrade, the application has become noticeably slower — page loads, data grids, and API response times have all degraded compared to the previous version. We're looking for an experienced full-stack developer (or a pair — one Angular specialist, one .NET specialist) to diagnose and fix the performance regression. Scope of Work • Profile the application to identify what's causing the slowdown (frontend rendering, change detection, bundle size, API latency, DB queries, etc.) • Review Angular 20 upgrade for breaking changes/misconfigurations (standalone components, zoneless change detection, signals migration, lazy loading, ...

# Full Stack Developer Required – Dealer Management System (Long-Term) We are looking for an experienced Full Stack Developer to take ownership of our Dealer Management System (DMS) project and manage it from development to deployment. ## Project Overview The project is already developed to a large extent. We need a developer who can understand the existing codebase, continue development, fix bugs, add new features, improve performance, and manage deployment. ## Technology Stack - React / (Frontend) - Node.js / Express (Backend) - PostgreSQL - GitHub - REST APIs - Email (SMTP/Nodemailer) - Authentication & JWT ## Responsibilities - Understand the existing project architecture. - Add new modules and features. - Fix bugs and optimize performance. - Implement secure authenticat...

**MERN Stack Developer | React.js | Node.js | | MongoDB | REST APIs** I specialize in building modern, scalable, and production-ready web applications using the MERN stack. My focus is on creating clean architectures, secure backend systems, and responsive user interfaces that are easy to maintain and extend. ### Core Skills * React.js * JavaScript (ES6+) * Node.js * * MongoDB & Mongoose * REST API Development * Authentication (JWT) * Role-Based Access Control * Cloudinary & Multer File Uploads * CRUD Applications * MVC Architecture * Git & GitHub ### Types of Projects I Build * consumer data Management Systems * Admin Dashboards * Inventory Management Systems * CRM Applications * Business Management Software * E-commerce Backends * Authentication Systems * File Upload &...

I’m a full-stack developer trainee who learns best by rolling up my sleeves and coding, so I’m looking for a tutor who can guide me through the complete web stack and accelerate my progress. The sessions must cover all three pillars—front-end, back-end, and database management—because I want to understand how every layer connects when building a real-world application. Front-end work will revolve around modern JavaScript/TypeScript frameworks (React, Vue, or Angular are all fine), component architecture, state management, testing, and performance tuning. For the back-end, I’d like to get comfortable with Node/Express or comparable frameworks, dive into RESTful API design, authentication, deployment, and containerisation basics. On the data side, we’ll ...

I’m a full-stack developer trainee who learns best by rolling up my sleeves and coding, so I’m looking for a tutor who can guide me through the complete web stack and accelerate my progress. The sessions must cover all three pillars—front-end, back-end, and database management—because I want to understand how every layer connects when building a real-world application. Front-end work will revolve around modern JavaScript/TypeScript frameworks (React, Vue, or Angular are all fine), component architecture, state management, testing, and performance tuning. For the back-end, I’d like to get comfortable with Node/Express or comparable frameworks, dive into RESTful API design, authentication, deployment, and containerisation basics. On the data side, we’ll ...

I have an existing Node.js/Express application already deployed (Render backend + Hostinger frontend). I need an experienced Meta/WhatsApp Cloud API developer to complete the production setup and integrate WhatsApp messaging. Current Status Node.js backend is already developed. WhatsApp message sending code is already implemented. Backend uses Axios and WhatsApp Cloud API. Environment variables are already supported: WHATSAPP_PHONE_NUMBER_ID WHATSAPP_ACCESS_TOKEN Render deployment is working. Frontend is already live. Meta Developer account exists. The only blocker is completing the Meta production setup. Requirements I need one experienced developer who knows how to integrate whatsapp cloud api and who has already done that. Its a just one day task and I want some one to help me for ...

I’m ready to turn a new idea into a fully functioning web application and need an experienced full-stack developer to make it happen from the ground up. The scope covers everything: planning the architecture, designing a clean front end, wiring it to a secure and efficient back end, and deploying the finished product to a production-ready environment. Front end I’m flexible on the framework—React, Angular or Vue.js can all work—so feel free to recommend the stack you’re most productive with, provided it delivers a fast, responsive user experience across modern browsers. Back end & data layer You’ll own the server-side logic, API design, integration with third-party services, and database modelling. I’m open to the language and database yo...

I need a production-ready backend that covers three core pillars: user authentication and management, robust database handling, and versatile API connectivity. The data layer must run on PostgreSQL, so your solution should take advantage of its relational strengths, indexing, and security features. Authentication should support registration, secure login (JWT or similar), password recovery, and role-based access. The system must scale easily as new user types are added. On the integration side, I will connect to both internal endpoints and external third-party services, plus at least one payment gateway. Clean REST (or GraphQL if you prefer) documentation is essential so the mobile team can consume endpoints without friction. While I am open to frameworks—, NestJS, Django, FastAPI...

I run an active auction group on WhatsApp (members connect through Android devices) and now need a purpose-built backend that plugs into the WhatsApp Business API to keep each sale organised and transparent. Core flow • Capture every bid that comes into the group, store it with timestamp, bidder ID, and item reference. • Push instant “you’re now the highest bidder” or “you’ve been out-bid” alerts back to the bidder. With each bid the time to bid on that specific item gets extended with 10 seconds and auctions is done lot by lot. • Automatically close the lot at the preset end time and post a winner announcement to the group, while privately DM’ing payment instructions. Because I don’t yet have any server-side infras...