NoSQL Couch y 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'm looking for an experienced full-stack developer to build a multi-tenant SaaS platform where users can sign up, onboard their own trading workspace, and execute or manage trades — all within a fully isolated, secure environment. Each tenant (user/business) gets their own dashboard with the ability to: • Run and manage trades (buy/sell orders, portfolio tracking) • View real-time or simulated market data • Monitor trade history, P&L, and performance analytics • Configure their own settings and preferences The platform should support: • Multi-tenancy architecture with strict data isolation between tenants • Authentication & authorization (OAuth2 / JWT) • Role-based access control (admin, trader, viewer) • Subscription billing in...

Overview: We are launching "Nexus Robotics Japan," a B2B marketplace connecting Japanese enterprises with global robotics manufacturers to solve labor shortages. We need an expert developer to build the core system, database architecture, and intelligent matching engine for our Phase 1 MVP. Note: UI/UX design and complex frontend implementation will be handled separately by a designer. Your main focus will be the system architecture, database, and the rule-based guided search engine. Key Objective for Phase 1 MVP: To secure VC funding, this MVP must flawlessly showcase an "Intelligent Matching" Experience. Non-expert users from Japanese factories should be able to find the perfect robot in seconds via an intuitive, dating-app-like button interface. Scope of Work 1. D...

I have an AWS-hosted PostgreSQL instance that collects field data from several remote monitoring nodes. I need a secure, mobile-friendly web dashboard that lets service providers see exactly when a node needs attention, review what was done in the past, and leave fresh notes for the next technician. Core build • A backend service that connects to the existing PG database using best-practice security (parameterised queries, SSL, role separation). • 5–7 polished bar-chart or table views optimised for both laptop and phone screens. Fast render times matter, so you’ll likely add sensible indexes or query tuning along the way. • Clean role-based access control with two profiles: – Admin: can modify system settings and dig through detailed logs. &ndas...

Fix Broken Backend Deployment for Live E-commerce Site URGENT — React + FastAPI/Node + MongoDB My e-commerce website is live but login, payment, and orders are broken because the backend was never deployed properly. Need an experienced full-stack developer to fix this in 1–2 days. Current Setup • Domain: (live) • Frontend: React (Create React App) — already deployed on Vercel • Backend: FastAPI / Node + MongoDB — NOT deployed (code is in GitHub) • Originally built on: Emergent AI, then exported to GitHub • Integrations: Razorpay, Google OAuth, SendGrid The Problem REACT_APP_BACKEND_URL in Vercel is pointing to the frontend domain itself instead of a real backend. So login, payments, and orders all fail. All API keys have already been ro...

My + MongoDB store holds about half-a-million product pages and I have roughly $400 to devote to tightening its technical SEO so Google can crawl, understand and rank the catalogue far better than it does today. What I need is a hands-on specialist who can dive straight into the codebase, server configuration and deployment pipeline, then implement the changes that move the organic needle. The focus is purely technical SEO: aligning every part of the site with Google’s organic guidelines and lifting overall search-engine rankings. Key deliverables • Full technical audit of the live site, highlighting bottlenecks that keep Googlebot from accessing, rendering or indexing pages efficiently. • Implementation (not just advice) of the top-priority fixes—structured da...

My production Django app suddenly stopped serving data—the REST API endpoints time-out with no response while the site itself still loads. The project runs Django + Django REST Framework on a MySQL backend. I need someone who can jump in right away, trace the root cause, and patch it without disrupting existing users. You’ll have SSH access to the Ubuntu server, the Git repository, and a staging branch for testing. Acceptance criteria: • All previously failing endpoints return the correct JSON payload with HTTP 200 in Postman and curl. • No new warnings or errors appear in the Django or Nginx logs. • Migrations, admin, and cron tasks keep working against MySQL. • A concise commit message summarises the fix and a short report explains what broke...

I’m building Pahle as a place where people can connect with each other in real time. The core feature I need you to deliver is a seamless live chat / video environment that works inside a modern web interface and scales to thousands of concurrent users. Here’s what matters most to me: • Real-time video and audio powered by reliable tech such as WebRTC (or another proven alternative you can justify). • Text chat running alongside the video stream so participants can share links or quick notes without leaving the call. • User accounts with secure sign-up, login, and password reset; social-login options are a plus. • A clean, mobile-responsive UI that feels as fast on phones as it does on desktop. • Backend that can grow: Node.js, Python, or Go w...

Enterprise Asset Disposal & Auction Portal — MERN Stack + SAP Integration We are seeking a qualified development agency to build a custom 6-month enterprise web application for asset disposal and auction management at a large downstream petroleum distribution company. Core Stack: React (TypeScript), Node.js/Express, MongoDB, Azure/AWS private cloud, Kubernetes, SAP S/4HANA integration via SAP Integration Suite. Key Modules: Workflow automation, asset inventory & valuation, employee applications, document generation, AD authentication, full audit logging. Requirements: 7-person dedicated team (PM, Tech Lead, 2 Full-Stack Devs, SAP Integration Specialist, UX/UI Designer, QA Engineer, DevOps Engineer). Agile/Scrum delivery. Enterprise security (OWASP, ISO 27001, CIS hardening). ...

Summary Senior Backend Developer Needed — Dog Marketplace App (NestJS + Flutter Integration) We are building Doggy, a dog walking/sitting marketplace app for Israel. The Flutter app UI is already ~70% complete (~54 screens already built). We need an experienced backend developer/team to build the full production backend, integrate the Flutter app with live APIs, and build a small React admin panel. Scope Backend Build a production-grade backend including: • Auth & OTP • JWT sessions • User/walker profiles • Booking engine + state machine • Payments & payouts (Tranzila) • Real-time chat • Notifications • Reviews • Reports/disputes • Live tracking (MVP) • Admin moderation tools Flutter Integration You are NOT buildin...

Looking for an experienced full-stack mobile app developer/team to build an audio-only paid consultation app similar to Connecto. Tech stack preference: - Flutter frontend - Node.js + TypeScript backend - WebRTC P2P audio calling - - PostgreSQL - Redis - Coturn Core MVP features: - OTP authentication - User & expert profiles - Expert discovery/listing - Wallet & recharge system - Paid audio calls (per-minute billing) - Ratings & reviews - Push notifications - Admin panel Important requirements: - Scalable architecture - Low-cost infrastructure optimization - Clean production-grade code - Strong realtime/WebRTC experience - Experience with payment gateway integration Please share: - Relevant portfolio - Realtime/WebRTC experience - Estimated timeline - Team size - Appro...

Title: Senior Web Scraping & Data Engineering Developer for Content Intelligence Platform Project Overview: I am building a content‑aggregation and insights pipeline that collects updates, posts, and signals from major online platforms and public sources. The output will support a monthly insights publication and a long‑term analytics framework. I am seeking an experienced developer from a cost‑efficient region with strong skills in web scraping, browser automation, data engineering, and API integration. Key Responsibilities: Build and maintain scraping workflows for platforms such as LinkedIn, X/Twitter, Reddit, Substack, Facebook, Instagram, and other public sources Implement browser-based automation using tools like Playwright, Puppeteer, or Selenium Use lightweight scraper...

I need help stabilizing my server-side application by focusing squarely on performance optimization, with a particular emphasis on tightening up code execution. The goal is to shave milliseconds off critical requests and eliminate bottlenecks that appear under load. Scope • Profile the existing codebase to locate CPU-intensive paths, memory leaks, and blocking I/O. • Refactor or rewrite the slow spots, introducing asynchronous logic or batching where it makes sense. • Implement unit and integration benchmarks so we have before-and-after metrics that clearly show the gains. • Document every change: the reason, the impact, and any trade-offs. Success looks like: • Faster average and p95 response times under the current production workload. • Clear, reproducibl...

Core required Senior full-stack web — TypeScript, Node, React, Vite, Express, Drizzle, SQLite/Postgres Multi-tenant SaaS architecture — auth (OAuth/JWT), user namespacing, row-level access control, SQLite → Postgres migration Payments and metering — Stripe (or adult-friendly equivalents like CCBill, Segpay, Epoch), subscription webhooks, credit systems, per-feature usage metering GPU infrastructure / ML ops — RunPod, Modal, Replicate, or Kubernetes + bare-metal GPU; queueing, autoscaling, cold-start handling, retry/backoff ComfyUI — workflow JSON editing by node ID, custom node management, model file management, VACE for face swap Media storage and delivery — S3 / R2, CDN (CloudFront / ), signed URLs, retention policies FFmpeg / video pipeline &mda...

I am looking for an experienced Senior Full Stack Developer to assist me with a technical skill assessment for a new job opportunity. Tech Stack - React.js - TypeScript - Node.js - PostgreSQL - REST APIs - Modern full stack development practices What I Need - Guidance and support during the technical assessment - Help with architecture, clean code, and best practices - Strong debugging and problem-solving skills - Experience building scalable full stack applications - Ability to explain solutions clearly Preferred Qualifications - Senior-level experience in full stack development - Strong knowledge of React + TypeScript - Backend expertise with Node.js - Database design and PostgreSQL experience - Experience with coding tests or technical interviews Additional Notes - Good communicatio...

I want to stand up a full-stack IIoT environment on AWS tailored for a manufacturing plant. The platform must ingest machine performance data from shop-floor sensors, stream it securely into AWS, and expose three core capabilities: real-time monitoring, predictive maintenance, and rich analytics with clear reporting dashboards. The flow I have in mind uses AWS IoT Core or Greengrass at the edge to collect OPC-UA/MQTT payloads, routes them through Kinesis or Kafka (open to your suggestion), lands the raw data in S3, and writes curated time-series to DynamoDB or Timestream for fast queries. From there I need: • Live dashboards (Grafana, QuickSight, or a similar tool) that show cycle times, throughput, and alert me the moment a metric drifts outside tolerance. • A predictive mai...

I am looking for an experienced Senior Full Stack Developer to assist me with a technical skill assessment for a new job opportunity. Tech Stack - React.js - TypeScript - Node.js - PostgreSQL - REST APIs - Modern full stack development practices What I Need - Guidance and support during the technical assessment - Help with architecture, clean code, and best practices - Strong debugging and problem-solving skills - Experience building scalable full stack applications - Ability to explain solutions clearly Preferred Qualifications - Senior-level experience in full stack development - Strong knowledge of React + TypeScript - Backend expertise with Node.js - Database design and PostgreSQL experience - Experience with coding tests or technical interviews Additional Notes - ...

Need secure dashboard website. Features: - Admin login - Store user IDs/passwords - Add/edit/delete IDs - Counter system - API integration - AWS Lambda + DynamoDB + S3 - Mobile friendly dashboard - Export/import users - Multiple browser support - Secure token authentication - Hosting setup Frontend: React or Backend: Node.js Database: DynamoDB or MongoDB Hosting: AWS or VPS

I need to retire my old Microsoft Access commission-tracking database and move everything to a cloud-based interface that staff can reach from any browser. You will start with the full Access file (forms, queries, VBA, and data) and rebuild the same business logic online. Two elements must make the jump intact: • Customizable commission calculations that let me change rates, tiers, and effective dates without touching code. • Built-in reporting and analytics so managers can slice results by salesperson, product line, and period, then export to Excel or PDF. Beyond those, I’m happy to discuss best practices—user authentication, audit trails, or dashboards—if they fit naturally into the new architecture. I have no fixed preference for the front-end stack; f...

I’m replacing our summary-based workflow with a true Retrieval-Augmented Generation pipeline and need a collaborator who can own both the backend and the React front end. The core objective is accuracy: every PDF we receive from clients must be chunked, embedded, stored in Qdrant, and then retrieved at query time so the language model can cite exact passages, never a lossy summary. You’ll wire this flow together with Python services and Node/Fastify APIs, expose it to the UI in Typescript/React, and keep everything humming inside our OpenAI-powered evaluation layer. What I’ll lean on you for • Architecting and implementing the end-to-end RAG pipeline (chunking strategy, embedding jobs, vector-store schema, retrieval functions). • Building real-time docum...

Dear DevOps Operations Experts, We are currently looking for mutliple Azure DevOps Operations Experts for one of the leading tech companies in position is 100% remote and long-term. QUICK FACTS: - Freelancing/Contracting - Start: ASAP - 100% remote - Duration: long-term 12+ months - Capacity: full-time, part-time also possible - Language: English (no german needed!!) - German business hours REQUIREMENTS: - Experience with DevOps in Azure environments, including operations, automation, and platform support. - Knowledge of Azure API Management, Azure OpenAI, and Azure AI Foundry. - Skills in Python and PowerShell for automation, tooling, and operational tasks. - Understanding of machine learning concepts and AI-related cloud services. - (Optional) Basics in data science and data engineer...

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.

Job Title: Senior Full-Stack Developer Needed: Fix & Revive Legacy Flutter/MERN App Project Overview: I have an existing application called Gurash that has not been updated in several years. It is currently failing to build due to outdated dependencies and SDK versions. Tech Stack: • Frontend: Flutter (Legacy code, needs migration to latest version). • Backend: MERN Stack (Node.js, Express, MongoDB). • Integrations: Firebase (Auth, Firestore, Cloud Messaging), GalliMaps/Google Maps API. The Task: 1. Fix all build errors and migrate the Flutter app to the latest stable version. 2. Update all outdated dependencies in the MERN backend. 3. Ensure Firebase and Map integrations are working correctly with new SDKs. 4. Perform a full audit to ensure the app is functional and rea...

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...

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...

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...