NoSQL 카우치 및 몽고 Jobs

Real-Time MERN Collaboration Platform (Notion + Slack hybrid), I’ll write a polished, client-facing version. Project Title Real-Time Collaborative Document & Communication Platform (MERN Stack) Freelancing Description (Professional Version) I have developed a production-grade real-time collaborative web application using the MERN stack (MongoDB, , React, Node.js) with for live synchronization. This platform allows multiple users to collaborate on documents simultaneously with secure access control and real-time updates — similar to tools like Notion or Google Docs. Core Features Secure JWT Authentication Login / Signup Email verification via OTP Password reset system Protected API & WebSocket routes Real-Time Rich Text Editor Built with Delta-based con...

i need someone who can deploy and set up my iOS and Android mobile applications. i have all the files and codes ready.

SITUACIÓN ACTUAL: Sistema RelojControl en producción (GitHub: ) - Backend: Node.js 16 + Express + Sequelize + SQL Server - Frontend: Vue.js 2 + Vuetify + Vuex - Funciones: Órdenes trabajo (OTs), timers realtime, reportes Excel, upload Excel - 2 READMEs + estructura backend/front + models (64KB) SE REQUIERE MÓDULO 2 : ASIGNACIÓN OPERADORES A OTs con filtrado por usuario ESPECÍFICAMENTE: BACKEND: - Tabla user_ot_assignments (userId, orderId, assignedBy, date) - POST /api/assign-ot {userId, orderId[], assignedBy} - GET /api/user-orders/:userId (solo OTs asignadas al usuario) - Asignación masiva array orders FRONTEND: - Admin: (tabla OTs + checkboxes usuarios) - Operador: filtrada → solo mis OTs asignadas - Upload Excel asignaciones ma...

I’m putting together a multi-page web application built with ReactJS (NextJS framework), and I’d like a hand finishing the core functionality. The app must: • include secure user authentication (sign-up, login, protected routes) • render dynamic content pulled from a NoSQL database (MongoDB is my current pick, but I’m open to another option like Firebase) • handle multiple forms with client- and server-side validation All pages are already wireframed; your job is to implement the React/Next components, integrate the database layer, and ensure the UX remains smooth across page transitions. I’ll provide Figma mock-ups, the existing repo, and API endpoints on project start. Acceptance criteria 1. Users can register, verify, log in/out, and acc...

This project is a new social networking platform that needs end-to-end development on the MERN stack. The goal is to deliver a scalable, secure web application where users can create accounts, interact in real time and consume dynamic content. Core work spans the full stack: designing MongoDB collections, building an Express/Node.js backend with REST or GraphQL endpoints, and crafting a responsive React front-end. Real-time features (chat or live updates) should leverage or a comparable solution. Clean, well-commented code in a Git repository and deployment to a staging server are essential. Deliverables: • MVP deployed to a test server with sign-up/login and editable user profiles • Documented API plus a concise README for local setup • Two weeks of post-launch...

I'm seeking a skilled full stack developer to create a web application designed to streamline job application processes for developers. This tool will be user-friendly, efficient, and tailored specifically for tech job seekers. Key Features: - User Authentication: Secure login/signup. - Job Listings: Aggregated from various platforms. - Application Tracker: Monitor application status. - Profile Builder: Create and customize resumes. Ideal Skills: - Proficiency in frontend (React, Angular) and backend (Node.js, Django) technologies. - Experience with database management (SQL, NoSQL). - Strong UI/UX design principles. - Previous experience in building job-related web applications is a plus. Looking for a developer who can take this from concept to completion, ensuring a smooth and e...

I need a sharp-eyed Flutter / Node.js troubleshooter to pinpoint and fix an intermittent signup failure in my mobile app. The OTP step completes successfully, yet many users (on both iOS and Android) hit a wall when the form tries to create the account. No explicit error is returned to the UI, but the account never appears in the database. Here is what I can share right away: • Front end: Flutter 3.x, using MSG91 for phone-based OTP. • Back end: Node.js (Express) REST API, MongoDB. • Flow: user enters phone → receives OTP → OTP verified → form posts profile details → failure occurs after the POST. What I need from you is a fast, reproducible diagnosis, a clean code fix (whether in Dart, the REST endpoint, or both), and a short hand-off note so my te...

The goal is to craft a complete web application from the ground up, pairing a React.js front end with a Node.js back end and shipping a functional MVP within a month. I already know I want React for the client interface, so the build should follow best-practice component architecture, modern hooks, and a clean, responsive layout. On the server side, Node.js (Express preferred) will power a RESTful API, handle authentication, and connect to a persistent data store—MongoDB or PostgreSQL, whichever you feel best suits the use case. To keep expectations crystal clear, here are the concrete deliverables: • Git repo initialized with meaningful commits, README, and .env sample • React UI coded, styled, and wired to the API (state management via hooks or Redux) • Node.js...

I’m planning a new web application and want one talented partner to take it from first commit to production. The stack is already set—React on the front end, Node.js (with Express or a comparable framework) driving the server side—so you should feel completely at home with modern JavaScript, component-based UI design, RESTful (or GraphQL) APIs, and the usual DevOps steps that get everything running smoothly in the cloud. The exact product domain is still flexible; what matters most is clean architecture, clear code, and a smooth hand-off. I’ll bring the product vision and designs, you’ll bring the full-stack expertise to: • set up the project structure and repository • build the React interface with reusable components and state management best p...

We need a Node.js Expert from Pakistan or India we need work for Guidance and Help we need work for long term

The core of my project is an API service already running on .NET 5 and paired with an Angular front-end. I need hands-on, task-based support to keep new features moving quickly while maintaining clean, testable code. Here’s the current stack and workflow so you know what you’ll be jumping into: • Backend: ASP.NET Core 5, Entity Framework Core, RESTful endpoints. • Front-end: Angular (latest stable), RxJS, Material. • DevOps: Git, pull-request reviews, CI builds on GitHub Actions. Typical tasks you could pick up include: • Expanding endpoints and DTOs. • Wiring new Angular components to the fresh endpoints. • Adding unit / integration tests where coverage is thin. • Fine-tuning performance or refactoring when technical debt appe...

I’m in the middle of a CROMA overhaul and the single, driving objective is to refresh existing features by squeezing every last millisecond out of them. No new bells and whistles—just a focused performance pass aimed at raw speed. Here’s the picture: React on the client side, Node.js/Express talking to a MongoDB cluster, all containerized in Docker and running on AWS ECS. I already have baseline profiling data and a staging environment waiting; once we start, you’ll get full access so you can re-profile, isolate the slow spots, and rewrite or refactor whatever is holding us back. Deliverables • A set of well-commented code changes or configuration tweaks • A before-and-after benchmark report (same test suite, same hardware) showing at least a 35 % dr...

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...

Preciso de apoio para desenvolver meu Trabalho de Conclusão de Curso em Análise e Desenvolvimento de Sistemas no IFBA. O tema definido é um Sistema Inteligente de Coleta com foco em aumentar a satisfação do cliente. O que busco • Desenvolvimento completo do sistema de coleta – da concepção à implementação. • Relatório técnico entre 40 e 50 páginas que descreva arquitetura, metodologia, testes e resultados. • Prazo total aproximado de 6 meses, com entregas parciais combinadas. Requisitos-chave • A solução deve priorizar a experiência do usuário, reduzindo pontos de atrito no processo de coleta. • Quero ver propostas detalhadas de projetos: cr...

Job Title: NestJS Backend Developer – High-Performance Car Bulk Import (ETL) The Challenge We are looking for a senior-level NestJS developer to build a robust, production-ready car data import engine for our vehicle marketplace. This isn't a simple "upload and save" task; we require a sophisticated streaming pipeline capable of processing massive datasets (CSV, XML, JSON) with minimal memory footprint and high reliability. Core Task Build a POST /imports/cars endpoint that: Automatic Format Detection: Handles multipart/form-data and identifies the file type (CSV, XML, or JSON) programmatically. Stream-Based Processing: Processes data using Node.js Streams / AsyncIterables. The application should never load the full file into RAM. Data Pipeline: Implements a clean ...

The Role We are looking for a skilled Full-Stack Developer to join our growing dev team. You will be working alongside our existing developers to build out new features, optimize performance, and scale our vehicle marketplace platform. We need someone who is comfortable jumping into a mature codebase, collaborating via Git, and contributing to a high-quality TypeScript environment. Technical Stack Frontend: (React), TypeScript. Styling: Tailwind CSS & Bootstrap (handling a hybrid UI environment). Backend: Node.js / NestJS. Database: MongoDB. Tools: Git/GitHub, Vercel, and experience with AI-assisted coding (Cursor, Lovable, etc.) is a major plus. Key Responsibilities Feature Development: Collaborate with the team to ship new frontend components and backend endpoints. Data Hand...

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...

I’m building a mobile-only app that needs a real-time text chat backend dedicated to one-on-one conversations. The goal is a lightweight, low-latency server that can authenticate users, deliver messages instantly, store chat history, and scale as the user base grows—all without the overhead of group or public room logic. I’m open to proven stacks such as Node.js with WebSocket/, Go with gRPC, or an equivalent solution that plays nicely with iOS and Android clients. End-to-end encryption, push-notification hooks (FCM / APNs), and a RESTful or GraphQL API for ancillary data are highly desirable. Deliverables • Production-ready server code with clear setup instructions • Secure user authentication and encrypted message transport • Message persistence (Mo...

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 ...

I’m ready to add PAN card verification to my e-commerce site. You’ll have direct access to the official API documentation, and the stack is already in place—Node.js on the backend and Vue.js on the frontend. Here’s what I need from you: • Backend (Node.js): create secure routes that call the PAN verification endpoint, handle token management, sanitise user input, and store the responses we need for order processing. • Frontend (Vue.js): build a clean form that collects the PAN, calls our new backend endpoint, and displays success or error states in real time. • Testing & hand-off: end-to-end tests confirming valid/invalid PAN handling, plus clear setup notes so my team can deploy with confidence. If you’ve integrated identity or payme...

I’m building a nonprofit smart-locker network and need a developer to stand up the entire backend plus a lightweight web dashboard. The lockers will be opened only after a biometric match—ideally fingerprint or facial recognition—so the API you create must handle secure enrollment, matching, and audit logging without ever storing conventional IDs, phone numbers, or payment data. Core requirements • RESTful (or GraphQL) API hosted on AWS, with a clean data model for lockers, users, and biometric templates • Biometric logic that can accept fingerprint or facial recognition data, hash it securely, and return match / no-match results in under two seconds • Automatic locker assignment, occupancy tracking, and remote release commands, exposed through a sim...

We are looking for an experienced React.js and Node.js developer (Full Time Freelancer, not an Agency or Part Time freelancer) to develop and integrate APIs for our web application. The developer will be responsible for creating secure, scalable, and well-documented APIs and connecting them with third-party services. This project involves backend API development, third-party service integration, and frontend API consumption where required. ✅ Responsibilities: Develop REST APIs using Node.js and Integrate third-party APIs / external services Connect APIs with React.js frontend Implement authentication systems (JWT, OAuth, API Keys, etc.) Handle data validation, error handling, and performance optimization Write clean and maintainable code Provide API documentation (Postman / Swagger pref...

I’m looking for a developer who can build a social-networking web application from scratch. The core idea is to let users create profiles, post updates, follow friends, and exchange private messages—nothing overly complex at first, but the foundations should be solid enough to grow. Here’s what I need delivered: • A responsive front end (React, Vue, or similar) with clean, modern UI components for feed, profile, and messaging. • A secure back end (Node.js, Django, or comparable framework) that exposes RESTful endpoints and handles authentication, user relationships, and real-time notifications. • A lightweight admin panel to moderate content and manage users. • Deployment scripts or documentation for hosting on a mainstream cloud platform (AWS, ...

Quero lançar uma pequena rede social voltada exclusivamente para lazer. O objetivo inicial é bem enxuto: disponibilizar um espaço onde os usuários possam trocar mensagens diretas em tempo real, de forma simples e intuitiva, tanto no desktop quanto no mobile. Escopo que preciso neste primeiro momento: • Tela de cadastro/login com autenticação básica (e-mail ou telefone). • Lista de contatos adicionados e busca simples de usuários. • Janela de chat bilateral com histórico armazenado em banco de dados. • Notificações de novas mensagens (push ou web). • Painel administrativo mínimo para moderação e métricas essenciais. Tecnologias ficam a seu critério, cont...

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...

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.

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 need a solid backend that lets several independent restaurants run from the same cloud platform while keeping a local MySQL database at each venue. The stack is already set: Node.js on the server side, Angular for the web console, and standard SQL. Core features I must see working: order management that mirrors every ticket and status update in real time, a secure user-authentication layer (roles for cashiers, kitchen, managers, etc.), and inventory tracking that updates stock counts the moment an item is sold or a delivery is recorded. Each restaurant keeps operating even if its connection blips, so a lightweight web service will sit on the local machine, watch the MySQL tables, and push changes to the cloud API the instant they happen; the cloud then replies with any new data to ...

The task is to turn my early-stage concept into a working hybrid MVP that will launch first on the web. Everything else in the product can stay bare-bones for now—the priority is a clean, secure user-authentication flow that covers sign-up, login, password reset and session handling. Social or single-sign-on options (Google, Apple, etc.) would be great if they slot in easily. I have user stories and low-fidelity wireframes ready. Choose any modern stack you’re comfortable with—React or Vue on the front end, Node/Express, Django or a similar REST backend, paired with JWT or OAuth for token handling. What matters is that the codebase remains portable so I can wrap it later with Capacitor, Ionic or another bridge for iOS and Android. Deliverables • Deployable web bu...

I need assistance with a MongoDB database on my Linode (Alkali) server. I'm looking to delete the data within the database. Requirements: - Access to my Linode server - Execute commands to clear the database content Ideal Skills and Experience: - Proficient in MongoDB - Experienced with Linode server management - Command over data deletion commands and database handling Please note if backups are required.

The goal is to deliver a complete, production-ready IoT platform that automates a home’s lighting and HVAC while responding flawlessly to Google Home voice commands. Core build • Firmware or edge-side code that speaks to smart switches, dimmers, thermostats and temperature sensors, ideally over MQTT or another low-latency protocol. • Secure cloud back-end (Node.js, Python, or comparable stack) with REST and WebSocket endpoints so the mobile or web dashboard stays in sync in real time. • Database layer for device states, schedules and user profiles; relational or NoSQL is fine as long as latency stays low. • Google Home Action integration, including OAuth flow and fulfilment webhook, so “Hey Google, set living-room lights to 30 %” or “t...

I need a versatile full-stack developer who can take an idea from blank repo to live deployment. The job covers everything: shaping the architecture, building a responsive front-end, wiring a secure back-end API with a relational database, and wrapping it all in automated tests and CI/CD so the codebase is production-ready. The exact feature map will be finalised together, but expect staples such as secure user authentication, the option to plug in a payment gateway, and a lightweight analytics dashboard. I’m flexible on tools—React or Vue on the client, Node.js, Django, or Laravel on the server—as long as the stack is mainstream, well-documented, and deploys smoothly to AWS (or a comparable cloud). Deliverables • Clean, well-structured repo with README and setup n...

We're building a high-velocity venture studio and are looking for a vibe-code-affine full-stack developer who can take a functional UI prototype and turn it into a launch-ready MVP—fast, clean, and production-safe. Our workflow: We deliver a clear concept + functional UI prototype (, no DB/auth yet) You take it to launch readiness in ~1 work day (sometimes 2 for slightly larger scopes) Stack and guardrails are predefined to minimize friction You’re encouraged to vibe code, but you must know when to slow down and do things correctly This is not greenfield architecture work and not pixel-pushing. It’s about execution speed with technical judgment. Typical Scope (per project) You will: Add Supabase backend (Postgres, auth, RLS) Implement magic-link auth (OAuth optiona...

We are looking for a senior full-stack engineer to take ownership of several live products and Smart TV applications. This is a long-term, part-time role focused on maintenance, improvements, and occasional new features. Our Platforms � � � � Apps Samsung TV (Tizen) LG TV (webOS) Android TV Responsibilities Maintain and improve existing websites and admin dashboards Maintain backend services and APIs Bug fixing, performance improvements, and refactoring Maintain and update Samsung & LG TV applications Assist with app store submissions and updates Communicate clearly about progress and risks Tech Stack Frontend: JavaScript, React / Backend: Node.js, REST APIs Databases: SQL / NoSQL Smart TV: Samsung Tizen, LG webOS Android TV (strong plus) Streaming / IPTV experience is a big plus Requ...

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...

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...

I’m ready to give my current React-based front-end and Node.js back-end a thorough refresh. The codebase works, but it’s showing its age in three key areas: the look and feel, several backend workflows, and overall speed. Here’s what I need done: • User interface redesign – Every screen should adopt a clean, modern, minimalist style with intuitive spacing, typography and subtle motion. Figma mock-ups or another collaborative design tool will be shared for quick iterations. • Backend functionality – A handful of API routes must be refactored for clearer logic, stronger validation and better error handling. You’ll be working in Express, connecting to our existing MongoDB instance. • Performance optimization – Front-end bundle ...

I'm seeking an experienced backend developer to audit my existing Node.js backend. The audit should cover the following areas: - Security: Identify vulnerabilities and suggest improvements. - Performance: Analyze and recommend enhancements for speed and efficiency. - Code Quality: Review code for best practices and maintainability. Requirements: - Proven experience with Node.js - Strong understanding of backend security, performance optimization, and code quality - Ability to work with and understand comprehensive documentation Please provide examples of previous audits you've conducted and any relevant certifications.

I’m building a fully-hosted SaaS product that delivers data analytics without writing code. The stack must be assembled in Base44 (or any comparable no-code environment you prefer) and deployed to either AWS or Azure—whichever lets us scale most smoothly. Core purpose The application will ingest data from standard cloud-based sources and immediately surface insights. Real-time reporting is essential: think live dashboards that update the moment fresh records land. I also need a predictive layer so customers can run quick “what-if” scenarios and receive machine-generated forecasts. Access & security All users will come in through Single Sign-On. I want frictionless login that still meets enterprise requirements, so plan on SAML or OAuth-based SSO with t...