NoSQL Couch oraz Mongo Jobs

Quiero poner en marcha una aplicación web centrada en la gestión de proyectos. El objetivo es que los usuarios puedan organizar su trabajo diario y, al mismo tiempo, contar con datos claros sobre el avance de cada proyecto. Necesito, como mínimo, que la primera versión incluya: • Seguimiento de tareas: alta, edición, cambio de estado y fechas clave. • Generación de informes: vistas descargables o imprimibles que resuman progreso, horas invertidas y tareas pendientes. • Notificaciones por correo electrónico o mensaje de WhatsApp cuando se asigne, venza o cambie una tarea importante. La interfaz debe ser intuitiva, responsive y estar preparada para crecer en futuras funcionalidades (por ejemplo, colaboración en equi...

I have a fully-functional codebase that combines a front-end, an Express API, and Prisma for data access. Everything runs correctly on my machine, but it still lives only in development. I now need it deployed to production using the stack I have already chosen: on Vercel, the Express server on Railway, and an existing Supabase Postgres instance. The database is set up and populated, so there is no migration work required. What I do need is the entire deployment workflow put in place, along with any environment-variable wiring I may have missed. I can provide the actual secrets; I just need clarity on what must be set where so that the front-end talks to the API and the API talks to Supabase through Prisma. Deliverables • Live, publicly accessible site on Vercel • Expres...

Description We are looking for an experienced Full-Stack Developer to help build and maintain a modern web application used by internal teams and external customers. The ideal candidate should have strong experience with Node.js, React, REST APIs, cloud platforms, and scalable application architecture. Responsibilities Develop and maintain backend services using Node.js and Build responsive frontend interfaces using React.js Design and integrate RESTful APIs Work with relational and NoSQL databases Implement authentication, authorization, and security best practices Deploy and manage applications on AWS Collaborate with designers, project managers, and other developers Write clean, maintainable, and well-documented code Troubleshoot bugs and improve application performance Participate i...

I have a Windows-only program that performs intensive text-based data processing. It ingests large text files, runs a series of transformations and validations, then presents the results in a simple desktop UI. I now need the same workflow available in any modern browser, built with Node.js on the back end. The existing logic is well-structured and written in C#; I can provide the full source, sample data sets, and a short functional spec that explains each processing step. Your task is to port the core algorithms, recreate the current screens as responsive web pages, and ensure the output matches the desktop version byte-for-byte. You are free to choose frameworks that fit the Node.js ecosystem—Express or Fastify for routing, a templating engine or React/Vue for the front end, and...

Project Overview: We have a live application on the App Store and we need an expert to implement a sophisticated "User Support/Donation System" using PayPal Business API. Technical Requirements: 1. Database Linking & Context: • Implement logic to track transactions in the backend: linking (User A) to (User B) and the specific (Post/Media ID). • Ensure the database accurately records who supported whom and for which content. 2. Backend Logic (Node.js): • Split Payment Logic: Upon receiving a payment (e.g., $10) into our PayPal Business account, the server must automatically: • Deduct a 5% platform fee ($0.50) and move it to a dedicated "Platform Earnings" table. • Credit the remaining 95% ($9.50) to "User B’s Virtual Wallet" t...

I have a Windows-only program that performs intensive text-based data processing. It ingests large text files, runs a series of transformations and validations, then presents the results in a simple desktop UI. I now need the same workflow available in any modern browser, built with Node.js on the back end. The existing logic is well-structured and written in C#; I can provide the full source, sample data sets, and a short functional spec that explains each processing step. Your task is to port the core algorithms, recreate the current screens as responsive web pages, and ensure the output matches the desktop version byte-for-byte. You are free to choose frameworks that fit the Node.js ecosystem—Express or Fastify for routing, a templating engine or React/Vue for the front end, and...

My website runs on a Node.js back-end with a React front-end. A recent performance degradation bug on the server side is slowing response times, and I need it resolved quickly. Scope of work • Pinpoint the root cause of the slowdown (e.g., blocking code, inefficient queries, memory leaks, or misconfigured middleware). • Implement a clean, well-documented fix that restores normal performance without introducing regressions. • Provide a brief summary of the steps taken, files changed, and any recommendations for future optimisation. Please let me know: 1. Similar Node.js performance issues you have solved. 2. Your estimated hours to diagnose and fix. 3. A straightforward cost for the task and earliest start time. I will supply repository access and any logs you need...

We are hiring a Full-Stack Developer for an Energy-Tech / Grid Integration Platform. We are building a next-generation energy orchestration and market integration platform designed for renewable energy assets, battery systems, industrial flexibility, and grid-balancing participation. The goal is to build a scalable platform capable of supporting: Real-time telemetry and IoT data ingestion Battery and energy asset control Market integration with balancing and settlement systems Multi-tenant customer environments Event-driven energy workflows Automated reporting, scheduling, and compliance flows High-availability infrastructure for critical energy operations The platform will combine: Real-time device communication Cloud-native backend services Market communication and integrations Analytic...

I need an experienced developer to update my website's backend. The current backend is built in JavaScript (Node.js). The specific areas that need updating include: - Database management - API integration - User authentication system Ideal skills and experience: - Proficiency in Node.js - Strong background in database management - Experience with API integration - Knowledge of user authentication methods and security protocols - Ability to work quickly and efficiently I need this completed ASAP. Please provide your relevant experience and a timeline for completion.

Hiring: React Developer Looking for an experienced React developer to continue work inside an existing production codebase. Stack: * React * GitHub * Render * Node.js * API integrations Tasks: * Update frontend components/pages * Fix routing/state/rendering issues * Connect frontend to backend APIs * Improve dashboard functionality * Debug/test features * Work inside existing GitHub structure Requirements: * Strong React experience * Git/GitHub experience * Experience working on existing projects/codebases * Strong debugging skills * Fast and detail-oriented * Clean modern frontend understanding Not looking for beginners. Need someone reliable who can move quickly and work cleanly inside an existing system.

I’m launching a web-based social network and need an experienced developer to take it from concept to a live, scalable platform. The core build must include secure user registration and login, a real-time activity feed, follow/friend functionality, direct messaging, notifications, profile editing, and a simple admin dashboard. Responsive design is essential so the service feels seamless on phones, tablets, and desktops. I’m flexible on the stack, though a modern front-end framework such as React or Vue paired with a robust back end (Node.js, Django, or similar) and an SQL or NoSQL database would be ideal. Clean RESTful (or GraphQL) APIs are important because I plan to introduce a companion Windows desktop client later, so please architect with that future integration in mind. ...

Hiring: React Developer Looking for an experienced React developer to continue work inside an existing production codebase. Stack: * React * GitHub * Render * Node.js * API integrations Tasks: * Update frontend components/pages * Fix routing/state/rendering issues * Connect frontend to backend APIs * Improve dashboard functionality * Debug/test features * Work inside existing GitHub structure Requirements: * Strong React experience * Git/GitHub experience * Experience working on existing projects/codebases * Strong debugging skills * Fast and detail-oriented * Clean modern frontend understanding Not looking for beginners. Need someone reliable who can move quickly and work cleanly inside an existing system.

I’m building a brand-new web application under a fast-moving startup and I need one dedicated engineer to own the full stack from day one. We operate on California (PST) business hours, so you’ll work those hours alongside me and the design team, collaborating live through Slack, GitHub and Zoom. The core of the product is a React-driven front end, coupled with whatever back-end stack you’re most productive in—Node/Express, Python/FastAPI, or a comparable RESTful setup. You’ll start with green-field architecture decisions, set up CI/CD, wireframes to working screens, database schema, APIs, automated tests and production deployment. This is a full-time, monthly-salary role and I’m hiring an individual developer only—no agencies or teams. Automa...

I run a product-led SaaS company and need a full-stack engineer who can work the same hours I do—9 am – 5 pm Pacific Time, Monday through Friday. Every feature we ship is built with JavaScript from back to front, so daily work revolves around a Node.js/Express API layer feeding a React web application. You will own end-to-end development: refining tickets in our Monday morning grooming call, writing clean, well-tested Node services, and pushing pixel-perfect React components that match Figma specs. I deploy through a GitHub-driven CI/CD pipeline to AWS (ECS + RDS). Familiarity with GraphQL, PostgreSQL, Docker, and Jest is helpful, but solid Node.js fundamentals and modern React experience are the non-negotiables. Success is straightforward. By the end of each two-week spr...

PLEASE READ COMPLETELY PLEASE READ COMPLETELY PLEASE READ COMPLETELY I’m looking for a backend-focused engineer/devops developer to help stabilize and migrate an existing pre-launch platform backend into a clean Railway environment. The frontend is already heavily built and the backend foundation exists. This is NOT a from-scratch build. The immediate focus is infrastructure cleanup, deployment stability, runtime optimization, and safe migration practices. Current stack includes: * Node.js / NestJS * PostgreSQL / Supabase * Redis * Railway * Stripe * JWT/RBAC architecture * Multi-role platform structure What I need help with: * Audit existing Railway services/workers/runtime activity * Identify and reduce excessive agent/runtime usage * Find unnecessary services, loops, retries...

I have a zipped, production-ready KYC web app: a React (Vite) frontend and a Node.js/Express API. All code is finished and the environment variables for Twilio, Brevo and Anthropic are already referenced in the codebase—I will provide the actual keys. Here’s what I need done, ideally within the next couple of hours: • Frontend live on Vercel • Backend running on Railway • Environment keys entered in each platform’s dashboard • Confirmation that the public URL loads, the API responds and the whole KYC flow works end-to-end I don’t yet have Vercel or Railway accounts, so please be ready to create new ones (or deploy from your own and transfer ownership afterward). Once everything is up, send me the deployed URLs plus a quick proof—sc...

Hiring: React Developer Looking for an experienced React developer to continue work inside an existing production codebase. Stack: * React * GitHub * Render * Node.js * API integrations Tasks: * Update frontend components/pages * Fix routing/state/rendering issues * Connect frontend to backend APIs * Improve dashboard functionality * Debug/test features * Work inside existing GitHub structure Requirements: * Strong React experience * Git/GitHub experience * Experience working on existing projects/codebases * Strong debugging skills * Fast and detail-oriented * Clean modern frontend understanding Not looking for beginners. Need someone reliable who can move quickly and work cleanly inside an existing system.

I’m looking for a reliable backend partner who can stay with us long-term as we scale our cloud-based logistics platform. We are firmly committed to a Node.js stack and run an SQL database layer, so deep hands-on experience with modern Node.js frameworks and relational databases is essential. Core work ahead • Design and build new microservices (REST/GraphQL) that handle shipment tracking, carrier integrations, billing and user management. • Optimise existing Node.js services for performance, security and high availability. • Extend our SQL schema, write efficient queries and create migration scripts. • Set up and maintain CI/CD pipelines, automated testing and containerised deployments (Docker, Kubernetes or similar). • Produce clear technical docum...

I’m building an AI-driven personal-assistant chatbot that runs on a Node.js + Express backend with MongoDB for persistence and Groq’s API for the language layer. The goal is to give users a fast, intelligent helper that works seamlessly on both web and mobile screens. Scope of work • Architect or refine the RESTful endpoints that receive user questions, forward them to Groq, and stream answers back in real time. • Create (or polish) a responsive web interface and a companion mobile experience so the conversation feels native on any device. • Persist every message, plus metadata needed for analytics, inside MongoDB and expose a history endpoint that can be filtered by user and date. • Build two key features into the assistant itself: – Task...

Somos uma empresa do setor dos serviços a empresas, que fornece diversos serviços com recurso a plataformas informáticas. Pretendemos recorrer, em regime de freelancer, a programadores/as que dominem Node Angularjs e Angular 2+, Mongodb, C#. Os requisitos do desenvolvimento informático pretendido para cada uma das aplicações será devidamente especificado, caso a caso, para permitir a orçamentação e a definição dos prazos de entrega com amplo conhecimento dos objetivos a concretizar.

Car and furniture marketplace To be developed and designed at the following : I already have the full page layouts in for the front-end, with a Node.js + API layer running on the back end. The goal is to turn this scaffold into a production-ready furniture and car marketplace where users can add their listings to sell their inventory. The current website should have a basic capacoty of upto 2500 listings. Scope of work • Account system: build secure sign-up / sign-in flows and editable profiles, mapped to three distinct roles—Admin, Seller and Buyer. • Payments: connect a mainstream gateway (Stripe, PayPal or similar) so buyers can pay sellers directly, with order records returned to the API. • Search & filters: implement fast, server-side searchable listi...

I need my billing platform moved to a fresh VPS without downtime. The current service is running a front-end with a MongoDB database; however, I do not yet have a dump of the database. Your first task is to connect by SSH to the live server, create a clean MongoDB backup, and verify its integrity. Once the backup is safe, you will provision the new VPS, install the required stack (Node, , MongoDB, Nginx or an equivalent reverse proxy, PM2 for process management), and restore the data so the application behaves exactly as it does now. Environment variables and secrets must stay private; I will provide them over an encrypted channel. Deliverables • Verified MongoDB backup from the old server • Deployed production build running behind a proxy on the new VPS • Rest...

# Proyecto: Despliegue y configuración de PrismDB **Plataforma SaaS de Prospección y Ventas para Colombia** --- ## Descripción del proyecto PrismDB es una plataforma SaaS con dos módulos integrados: - **Prospección**: Encuentra clientes nuevos en Colombia y los contacta automáticamente por WhatsApp - **Ventas**: Gestiona y automatiza las ventas a clientes activos vía WhatsApp El código está 100% desarrollado y listo. Solo necesito a alguien que lo despliegue y conecte los servicios. No es un proyecto de desarrollo — es un proyecto de DevOps y configuración. --- ## Lo que está listo (no hay que construir nada) ✅ Código completo del backend (Node.js + Express + BullMQ) ✅ Código completo de...

Project: Vitro AV — SaaS Web App for AV Dealers (React + Supabase) We are building Vitro AV, a browser-based SaaS quoting platform for AV dealers and home theatre integrators in India. The core logic is already built and validated in Excel (722 products, 3,500+ recommendation scenarios). We need a developer to convert this into a production web application. What needs to be built: User auth with multi-tenant dealer accounts (Supabase Auth) Room Wizard — step-by-step AV system configurator that auto-generates a bill of materials from 3,500+ pre-built scenarios Quote Builder — editable line items with model search, discount %, MRP auto-fill, totals Branded PDF quote export (dealer logo, client details, itemised quote) Quote save/history and basic customer records Admin pa...

Je souhaite créer une application e-commerce performante bâtie sur React pour le front-end et Node.js pour le back-end. Objectif : proposer une expérience professionnelle et épurée, rapide à charger, facile à faire évoluer. Fonctionnalités clés attendues • Catalogue produits complet avec interface d’administration (ajout, modification, suppression, organisation par catégories). • Panier d’achat dynamique : ajout, suppression, mise à jour des quantités, calcul automatique des totaux. • Interface utilisateur responsive, design clair et sobre, cohérent sur desktop comme mobile. • Architecture scalable et code bien structuré pour faciliter l’a...

I have an existing Windows desktop application (built in Visual Studio). The app is fully functional and serves as a fitness application. I am looking for an experienced full-stack developer (or team) to analyze the existing app and build a modern web-based version with similar functionality and improved UX/UI. Scope of Work: Review and understand the existing Windows application (source code provided) Run, test, and document current functionality Rebuild the application as a web app Improve UI/UX where appropriate Ensure scalability and performance Preferred Tech Stack: Frontend: React / (preferred) OR Flutter / React Native (if proposing cross-platform approach) Backend: Node.js + Express REST or GraphQL APIs Firebase (optional) CMS / Content: Headless CMS (Strapi, Sanity, or si...

What You’ll Do Design and build scalable backend services for a SaaS platform Develop secure, high-performance RESTful APIs Implement multi-tenant architecture with proper data isolation Design and optimize PostgreSQL schemas, queries, and indexes Implement authentication and authorization (JWT, OAuth, RBAC) Integrate third-party services (payments, notifications, storage, etc.) Ensure performance, security, and reliability in production Contribute to backend architecture, standards, and best practices Must-Have Requirements 3+ years of backend experience on real SaaS products Strong proficiency in Node.js (preferred) or equivalent backend stack Experience designing and implementing multi-tenant systems Strong knowledge of PostgreSQL or equivalent DB Experience building secure produ...

Estoy dando forma al primer MVP de un marketplace B2B enfocado exclusivamente a la compraventa de productos digitales bajo la firma NEOLINK HUB S.L. Busco un partner tecnológico capaz de entregar una versión funcional, estable y bien estructurada sobre arquitectura SaaS, que podamos escalar con rapidez cuando el modelo se valide. Alcance inmediato • Registro y gestión de usuarios segmentados (al menos dos roles diferenciados). • Publicación de oportunidades con moderación automática: el sistema deberá validar y publicar sin intervención humana, aplicando las reglas que definamos. • Panel básico para que cada usuario pueda ver, editar o retirar sus oportunidades. Deseables a corto plazo (no obligatorios ...