The ultimate guide to hiring a web developer in 2021
If you want to stay competitive in 2021, you need a high quality website. Learn how to hire the best possible web developer for your business fast.
NoSQL Couch & Mongo is a database system and a technology that is particularly useful when developers need scalability and high performance. It varies from traditional database, which follow a schema first approach, allowing all data types and unstructured/structured documents to be stored without any problems. NoSQL Couch & Mongo developers are skilled professionals who specialize in understanding this database system and developing applications for their clients with maximum efficiency and accuracy.
Here's some projects that our expert NoSQL Couch & Mongo Developer made real:
NoSQL Couch & Mongo databases allow the flexibility to fit almost any application needs of a client, from frontend to backend development. Our expert NoSQL Couch & Mongo Developers relish in the challenge of creating great projects for our clients. So why not hire one for yourself? Post in Freelancer.com your project requirements – assign an expert in the field, discuss expectations, review bids, submit your project for completion – then sit back and let our NoSQL Couch & Mongo Developers make your project come true!
De 69,273 opiniones, los clientes califican nuestro NoSQL Couch & Mongo Developers 4.9 de un total de 5 estrellas.NoSQL Couch & Mongo is a database system and a technology that is particularly useful when developers need scalability and high performance. It varies from traditional database, which follow a schema first approach, allowing all data types and unstructured/structured documents to be stored without any problems. NoSQL Couch & Mongo developers are skilled professionals who specialize in understanding this database system and developing applications for their clients with maximum efficiency and accuracy.
Here's some projects that our expert NoSQL Couch & Mongo Developer made real:
NoSQL Couch & Mongo databases allow the flexibility to fit almost any application needs of a client, from frontend to backend development. Our expert NoSQL Couch & Mongo Developers relish in the challenge of creating great projects for our clients. So why not hire one for yourself? Post in Freelancer.com your project requirements – assign an expert in the field, discuss expectations, review bids, submit your project for completion – then sit back and let our NoSQL Couch & Mongo Developers make your project come true!
De 69,273 opiniones, los clientes califican nuestro NoSQL Couch & Mongo Developers 4.9 de un total de 5 estrellas.Ya tengo todo el frontend de mi CRM terminado; ahora necesito que cobre vida en producción. Busco a alguien que construya y despliegue el backend completo usando Node.js. Qué necesito que entregues • API REST segura que gestione usuarios – registro, login, roles y permisos. • Módulo de reportes que permita generar y exportar métricas clave desde la base de datos. • Conectores para integrar el CRM con servicios externos (por ejemplo, plataformas de email o facturación) mediante Webhooks o SDKs. • Elección y configuración de la base de datos: estoy abierto a MySQL, MongoDB o PostgreSQL, la que consideres más adecuada. • Despliegue en mi servidor (Linux) con entorno de staging y producción, ...
Saya ingin memulai usaha di bidang teknologi, khususnya pengembangan perangkat lunak untuk aplikasi web. Saya membutuhkan pendampingan praktis yang mencakup: • Pemetaan peluang pasar dan model bisnis yang realistis untuk produk web-based. • Penjelasan alur kerja pengembangan—from ide, riset kebutuhan pengguna, perancangan UI/UX, hingga deployment dan maintenance. • Rekomendasi stack teknologi populer (contoh: React, Node.js, PostgreSQL atau alternatif sekelas) beserta alasan pemilihan. • Panduan membuat MVP sederhana: struktur proyek, workflow Git, penerapan agile sprint singkat. • Strategi go-to-market awal, termasuk estimasi biaya operasional, hosting, dan lisensi. Saya belajar paling efektif melalui diskusi interaktif, contoh kode, dan tugas ke...
Saya ingin memulai usaha di bidang teknologi, khususnya pengembangan perangkat lunak untuk aplikasi web. Saya membutuhkan pendampingan praktis yang mencakup: • Pemetaan peluang pasar dan model bisnis yang realistis untuk produk web-based. • Penjelasan alur kerja pengembangan—from ide, riset kebutuhan pengguna, perancangan UI/UX, hingga deployment dan maintenance. • Rekomendasi stack teknologi populer (contoh: React, Node.js, PostgreSQL atau alternatif sekelas) beserta alasan pemilihan. • Panduan membuat MVP sederhana: struktur proyek, workflow Git, penerapan agile sprint singkat. • Strategi go-to-market awal, termasuk estimasi biaya operasional, hosting, dan lisensi. Saya belajar paling efektif melalui diskusi interaktif, contoh kode, dan tugas ke...
I need help wiring external APIs into our existing dashboard so the data we monitor appears in near-real time. The front-end is already built; what’s missing is the secure backend logic that authenticates, pulls, and formats the dashboard data before handing it to the UI. The application currently runs on Node.js and Express with a PostgreSQL store, but I’m open to Python (FastAPI) if that accelerates delivery. Whichever stack you choose, clean code, clear documentation, and environment-based configuration are essential. Deliverables • Integration code that connects to the chosen APIs and returns JSON ready for the dashboard • Any middleware or helper modules needed for authentication, rate-limits, and error handling • Step-by-step setup instructions in a...
I need help moving my existing Turso-hosted SQLite database—currently well under 1 GB—into PostgreSQL so it plugs cleanly into my tech stack ( on the front end, Payload CMS on the back end). The project covers three parts: designing an equivalent Postgres schema, transferring all data without loss, and updating the Payload/ configuration so the application boots immediately against the new database. You will need to: • Map the current tables, relationships, and data types to Postgres equivalents • Run (or write) the migration scripts and verify record counts and data integrity • Adjust Payload CMS settings and any environment variables in the app to point to Postgres • Provide a short hand-off note explaining the changes and any future maintenance ...
I run a fleet of 3000-plus smart water dispensers spread across multiple client locations and need a single web application that lets me see what is happening at each device the moment it happens. The core of the build is a full-stack solution: a React / front-end talking to a Node.js or FastAPI back-end, with MQTT handling the ingestion stream. Data persistence will live in PostgreSQL with the TimescaleDB extension so we can store high-frequency time-series readings while still keeping queries snappy; Redis will sit in front for real-time queues and caching. The most critical values that must update in real time are TDS and Temperature, though the schema should already accommodate pH, turbidity and any future metrics so I can turn those on without major refactoring. Multi-tenancy is ...
Building an app for your shop that covers finance, sales, inventory, customer data, and dashboards is a fantastic idea — it will give you a centralized system to manage everything efficiently. Let’s break down the core components you’ll need: Key Features for Your Shop App Finance tracking: Monitor income, expenses, profit margins, and generate financial reports. Sales status: Real-time sales data, daily/weekly/monthly summaries, and trend analysis. Product inventory: Stock levels, low-stock alerts, supplier details, and automated restocking suggestions. Customer database: Store customer profiles, purchase history, loyalty points, and contact info. Multiple dashboards: Custom dashboards for finance, sales, inventory, and customer insights. Tech Stack Options Frontend: Rea...
I want to take a web application from idea-stage to a polished, production-ready product and I’ve decided to do it on the MERN stack—MongoDB, Express, React, and Node.js. The core of the work is full-stack: architecting the database, building clean REST APIs (this is the piece I value most), and delivering a fast, responsive React interface that feels effortless on any device. Here is what I need from you: • A well-structured MongoDB schema and any necessary data-migration scripts. • Express/Node controllers that expose secure, well-documented REST endpoints. • A React front-end that consumes those endpoints and follows modern component patterns. • Basic authentication and session handling where appropriate. • Code that is easy for another dev...
We are building Sama, a premium realtime 1-to-1 audio social platform focused on: expert discovery realtime matching monetized audio communication wallet & billing systems scalable social infrastructure This is a serious long-term startup project — not a basic MVP. We are looking for an experienced full-stack development team or agency with strong expertise in: Flutter WebRTC Node.js / TypeScript Realtime systems Redis PostgreSQL Scalable backend architecture Premium mobile UI/UX The product architecture is designed to support future expansion into: video calling group rooms live streaming creator ecosystem features --- Core Features Required Authentication Mobile OTP login JWT authentication Session/device management...
Hiring: Sr. Data Engineer Job ID: GKS1805_3 --- Role: Senior Data Engineer Mode: Work From Home Budget: Dm on freelancer chat Availability: Immediate Joiners Only Open Positions: 1 Interview Process: AI Interview → L1 → 2 Client Rounds --- Role Overview We are looking for a high-impact Senior Data Engineer to design and build scalable, multi-tenant data systems on AWS. You will work across data engineering, backend systems, APIs, and ML workflows, contributing to end-to-end product delivery. --- Key Responsibilities - Design & build scalable multi-tenant systems on AWS (Glue, Lambda, Step Functions, ECS, S3, DynamoDB, SageMaker) - Develop robust data pipelines (ETL/ELT) for high-volume datasets - Build Lambda-based microservices & workflow orchestration ...
I’m provisioning RabbitMQ clusters on OpenShift, but every attempt ends with a release-name naming conflict that drives the pods into a CrashLoopBackOff. The manifests are all YAML and the surrounding automation is written in Node.js, so I need someone who can move comfortably between those two worlds while troubleshooting OCP internals. What I need you to do • Pinpoint the exact source of the release-name conflict and eliminate it. • Update the Helm chart / raw YAML (whichever proves to be the culprit) so the cluster spins up cleanly in each target region. • Verify that all pods remain healthy after deployment and that the management UI shows a fully formed RabbitMQ cluster. • Hand back the corrected deployment files plus a concise summary of the fix. A...
I’m ready to weave practical AI into our daily operations so repetitive, low-value tasks no longer drain time or attention. The overarching objective is clear: use artificial intelligence to automate key workflows end-to-end, freeing people to focus on higher-impact work. Here’s what I need help with: • Analyse my current processes, pinpoint where AI-driven automation will deliver the quickest wins, and explain why. • Design and build the chosen solution—this might involve natural-language chatbots, intelligent data-entry tools, report-generation scripts, or another approach we identify together. • Integrate the model or service cleanly into our existing tech stack, ensuring data security and smooth hand-offs. • Provide concise documentation and...
I need a cloud-native ETL pipeline built end-to-end on AWS, coded in PySpark and designed for production reliability. The pipeline will ingest data from three sources—databases, APIs, and file systems—then standardise and load it into an analytics-ready destination. Source files arrive in a mix of CSV, JSON, and Parquet, so the job must include automatic format detection, schema inference, and efficient column-wise writes. Beyond raw transformation, I want solid engineering practices: parameter-driven jobs, modular Spark code, unit tests, logging, alerting, and retry logic. Leveraging AWS native services such as Glue, EMR, Lambda, and S3 is expected, but I’m open to other AWS components if they shorten development time or lower cost. Candidates must have expertise in da...
Saya membutuhkan sebuah aplikasi web sederhana yang berfokus pada manajemen data produk. Inti pekerjaannya adalah membangun modul CRUD—Create, Read, Update, Delete—lengkap dengan fitur Filter produk agar pengguna mudah menyaring item berdasarkan kategori, harga, atau atribut lain yang relevan. Lingkup pekerjaan: • Rancang dan bangun antarmuka web responsif untuk daftar produk, formulir tambah/edit, tampilan detail, serta halaman konfirmasi hapus. • Implementasikan logika backend yang aman untuk operasi CRUD, termasuk validasi input dan penanganan error. • Tambahkan kemampuan penyaringan produk secara real-time (mis. berdasarkan nama, kategori, range harga). • Siapkan skema basis data dan contoh dataset agar mudah diuji. • Sertakan dokumentasi...
We are building Sama, a premium realtime 1-to-1 audio social platform focused on: expert discovery realtime matching monetized audio communication wallet & billing systems scalable social infrastructure This is a serious long-term startup project — not a basic MVP. We are looking for an experienced full-stack development team or agency with strong expertise in: Flutter WebRTC Node.js / TypeScript Realtime systems Redis PostgreSQL Scalable backend architecture Premium mobile UI/UX The product architecture is designed to support future expansion into: video calling group rooms live streaming creator ecosystem features --- Core Features Required Authentication Mobile OTP login JWT authentication Session/device management Rate limiting & abuse prevention U...
Saya membutuhkan bantuan Pengembangan perangkat lunak untuk membangun sebuah Aplikasi web yang berfokus pada penyajian Informasi atau konten. Gambaran singkat: Saya sudah memiliki ide dan struktur konten, namun memerlukan seorang developer yang dapat menerjemahkannya menjadi situs web modern, aman, dan mudah dikelola—baik di desktop maupun perangkat mobile. Cakupan kerja: • Merancang dan membangun front-end responsif (HTML5, CSS3, JavaScript atau framework setara). • Membangun back-end ringan yang memungkinkan saya menambah, mengedit, dan menghapus artikel atau halaman tanpa pengetahuan teknis mendalam (bisa menggunakan CMS kustom atau integrasi framework populer seperti Laravel, Node.js + Express, atau Django—mana yang paling efisien). • Menyiapkan struk...
### *Job Title:* Full-Stack Developer (Lovable, Supabase & AI Integration) – 2-Week Sprint *Project Overview:* We are finalizing an AI-powered document intelligence and analytics library. The frontend skeleton is built using *Lovable (), and the backend is powered by **Supabase (PostgreSQL). We need an experienced, fast-moving full-stack developer to connect the UI, optimize database structures, integrate advanced AI APIs, and complete the production deployment within a strict **2-week timeline*. ### *Key Responsibilities:* * *AI Pipeline Integration:* Build Supabase Edge Functions to handle file parsing, structured metadata extraction via *Claude 4.6, and vector embedding generation via **Voyage AI*. * *Vector Search & DB Optimization:* Implement semantic search using pgve...
I need a single developer who can take my rough wire-frames and turn them into a fully responsive web application built with React.js on the front end and Node.js + talking to a MongoDB database on the back end. Core features I must see working end-to-end are: email/username sign-up, secure login, role-based routing that separates normal users from the admin area, and an admin dashboard where I can view, edit, or delete data. Basic authentication and authorization are enough; I do not need two-factor or heavy encryption, but please follow common OWASP recommendations (hashed passwords, JWT or session cookies, input sanitisation, rate-limiting for sensitive routes). The UI has to feel smooth on desktop, tablet, and mobile. If you prefer a component library such as Material-UI, Ant Desi...
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...
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...
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...
If you want to stay competitive in 2021, you need a high quality website. Learn how to hire the best possible web developer for your business fast.
Learn how to find and work with a top-rated Google Chrome Developer for your project today!
Learn how to find and work with a skilled Geolocation Developer for your project. Tips and tricks to ensure successful collaboration.