Hire Node.js Developers for APIs, Integrations and Back Ends
RED SAG provides dedicated Node.js developers from our team in Tamil Nadu, India, to companies in the USA, UK, Australia, Canada and India. They build and maintain the server side of your product in TypeScript: APIs, background jobs, integrations with payment and messaging providers, and the database layer underneath. Each one works as a remote Node.js developer inside your team, on your repository, tickets and chat.
Back-end work is judged on what happens when things go wrong. A payment webhook arrives twice, a third-party API times out, a queue backs up, a migration locks a busy table. We look for Node.js developers who think about idempotency, retries, logging and data integrity as part of the feature, not as an afterthought once it is in production.
You can hire dedicated Node.js developers full time, part time or by the hour, or hand us a defined piece of work such as a new API or an integration at a fixed price. Start with a one-week paid pilot on a real ticket if you want to see the code before committing to a month.
What our Node.js developers build for you
REST and GraphQL APIs
Versioned APIs in NestJS, Express or Fastify with request validation, consistent error formats, pagination, rate limiting and OpenAPI documentation your front-end and partners can rely on.
Payment and billing integrations
Stripe, Razorpay, PayPal and Cashfree integrations with signed webhooks, idempotency keys, subscription state machines and reconciliation reports that match what the provider says.
Background jobs and queues
Email sending, report generation, imports and scheduled tasks moved off the request path using BullMQ with Redis, or SQS, with retries, dead-letter handling and monitoring.
Real-time features
Chat, notifications, live dashboards and collaborative editing with Socket.IO or WebSockets, scaled across instances with a Redis adapter.
Third-party and internal integrations
Connecting your product to CRMs, ERPs, accounting tools, SMS and WhatsApp gateways and shipping providers, with clear mapping, logging and replay when an upstream call fails.
Back-end for mobile and web apps
Authentication with JWT or sessions, file uploads to S3, push notifications and the admin endpoints that React, Flutter or React Native front-ends need.
Node.js skills and ecosystem
Runtime and language
- Node.js LTS
- TypeScript
- ES modules
- Streams and worker threads
- npm / pnpm
Frameworks
- NestJS
- Express
- Fastify
- Apollo Server
- tRPC
- Hono
Data
- PostgreSQL
- MySQL
- MongoDB
- Redis
- Prisma
- TypeORM
- Drizzle ORM
- Mongoose
Messaging and jobs
- BullMQ
- AWS SQS and SNS
- RabbitMQ
- Socket.IO
- node-cron
Security and validation
- Zod
- class-validator
- Passport.js
- JWT
- OAuth 2.0
- Helmet
- OWASP API Top 10
Testing and operations
- Jest
- Vitest
- Supertest
- Docker
- AWS Lambda
- GitHub Actions
- Pino
- OpenTelemetry
Junior, mid-level or senior
Pick the level that matches the work. Many teams pair one senior developer with a junior or mid-level developer to keep costs down without losing review quality.
Junior
1–3 years
Adds endpoints and fixes bugs inside an existing service, with a senior reviewing design and data changes.
- Build CRUD endpoints with validation and tests
- Write database queries and simple migrations
- Integrate well-documented third-party APIs
- Investigate and fix bugs from logs and error reports
Mid-level
3–6 years
Designs and delivers back-end features end to end, including data model changes.
- Design API contracts with the front-end team
- Model data and write safe, reversible migrations
- Build webhook handlers and background jobs with retries
- Review pull requests and improve test coverage
Senior
6+ years
Owns architecture, reliability and security for one or more services.
- Choose service boundaries, queues and caching strategy
- Profile slow endpoints and database queries under real load
- Set up logging, tracing, alerts and on-call runbooks
- Lead security reviews of authentication and data access
Common Node.js problems our developers avoid
Blocking the event loop
Synchronous file reads, large JSON parsing or CPU-heavy work in a request handler stalls every other request on that process. Our developers move heavy work to queues or worker threads and measure event-loop lag.
Unhandled promise rejections
A missing await or an unhandled rejection can crash the process or silently drop an error. We use typed async code, lint rules for floating promises and a single place where errors are logged and turned into responses.
Webhooks processed twice
Payment and messaging providers retry webhooks, so the same event can arrive more than once. Handlers must verify signatures, store event IDs and be idempotent so a customer is never charged or credited twice.
N+1 queries behind an ORM
An innocent-looking loop over related records can fire hundreds of queries. Developers are expected to read the SQL their ORM generates, add the right indexes and batch or join where it matters.
Ways to hire
Four ways to work with our Node.js developers, and when each one makes sense for Node.js work.
Full-time dedicated developer
One developer works only on your product, around 160 hours a month, inside your tools and sprint rhythm.
Best when you have an evolving back end with a steady stream of endpoints, integrations and data changes, or need someone to own a service.
Fixed monthly fee, invoiced monthly
Part-time dedicated developer
The same developer every week for about 80 hours a month, usually half days or agreed days.
Suits a stable API that needs regular small features, dependency and Node.js version upgrades, and attention when an integration changes.
Fixed monthly fee for the agreed hours
Hourly
Pay only for tracked hours against tickets you raise. Hours and task notes are shared with every invoice.
Useful for investigating a memory leak or slow endpoint, reviewing security, or building a single webhook integration.
Tracked hours, invoiced monthly
Fixed-price project
A written scope, a fixed quote and milestones. We carry the estimate risk; changes are quoted before they are built.
Works for a well-defined API, a payment gateway integration or a migration between databases or hosting platforms.
Milestone payments against an agreed scope
Indicative rates for Node.js developers
Rates by seniority for hourly, part-time and full-time dedicated work. Choose the currency you pay in.
| Seniority | Hourlytracked hours | Part-time dedicatedabout 80 hours a month | Full-time dedicatedabout 160 hours a month |
|---|---|---|---|
| Junior1–3 years | $15–19/hour₹450–600/hour | $1,000–1,300/month₹40,000–50,000/month | $1,700–2,200/month₹65,000–85,000/month |
| Mid-level3–6 years | $19–24/hour₹600–850/hour | $1,300–1,650/month₹55,000–70,000/month | $2,200–2,800/month₹90,000–1.2 lakh/month |
| Senior6+ years | $24–30/hour₹850–1,150/hour | $1,650–2,050/month₹75,000–95,000/month | $2,800–3,500/month₹1.3–1.7 lakh/month |
Indicative rates, before any applicable taxes. The exact figure depends on the developer we assign, the skills your project needs and the length of the engagement, and is agreed in writing before work starts. Fixed-price projects are quoted per scope.
How we vet and assign Node.js developers
Technical interview
A senior engineer on our side interviews every developer on the stack you are hiring for, covering the topics listed on this page, before they are put forward to any client.
Review of real work
We read code the developer has written, from our own projects or their earlier work, looking at structure, naming, tests and how they handle errors, not just whether it runs.
Practical trial task
A short task in the same stack, done in a real repository and reviewed like a pull request. It shows how someone works, asks questions and writes up what they did.
Matched to your brief
We put forward the developer whose experience fits your product and time zone, share a short profile, and you interview them yourself before anything is signed.
What the Node.js interview covers
- How the event loop works and what blocks it, with examples from real incidents
- Error handling in async code, and designing consistent API error responses
- Idempotent webhook handling, retries and background job design
- Relational data modelling, indexes, transactions and safe migrations
- Authentication, authorisation and common API security mistakes
The trial task
Build a small orders API in TypeScript: create and list endpoints with validation, a PostgreSQL schema with migrations, a signed payment webhook handler that is safe to receive twice, a background job that sends a confirmation, and integration tests. We review it as a pull request, including how errors and logging are handled.
How onboarding works
- 01
Call and NDA
A short call about your product, stack and team. We sign your NDA, or ours, before you share code, designs or business details.
- 02
Profile and interview
We share the profile of the developer we recommend and you interview them. A match usually takes about a week, depending on availability.
- 03
Contract and IP
The contract assigns all code and work product to you once invoices are paid, and sets out rates, hours, notice and confidentiality.
- 04
Access through your tools
You invite the developer to your GitHub or GitLab, Jira or Linear, and Slack or Teams. You control access and can revoke it at any time.
- 05
Updates you can rely on
A written update at the end of every working day, a weekly summary with hours, what shipped and what is blocked, and a demo when you want one.
The developer's first week
- Run the service and its dependencies locally with Docker, and read the data model and main request flows
- Get read access to logs, error tracking and dashboards to understand how production behaves today
- Ship one small real ticket through your review, CI and deployment process
- Write a short note on reliability, security and dependency risks with suggested priorities
Working hours overlap
Our team is in India (IST, UTC+5:30). These are the overlap windows we plan around; the exact hours are agreed in the contract.
United Kingdom
Our normal day (9:00–18:00 IST) covers roughly 9:00 am to 12:30 pm in London in winter and 9:00 am to 1:30 pm in summer. A developer working 11:00–20:00 IST can cover until about 2:30 pm GMT.
USA and Canada (Eastern)
On a shifted schedule the developer is online for about 9:00 am to noon Eastern (New York, Toronto), enough for stand-up, reviews and questions. Work carries on overnight and is ready in your morning.
USA and Canada (Pacific)
For California or Vancouver we agree a fixed early window, typically 7:00–9:00 am Pacific, plus written hand-offs at the end of your day. We are open that overlap is shorter here.
Australia
India is 4.5 to 5.5 hours behind Sydney and Melbourne, so our normal day overlaps your afternoon, roughly 1:30–5:30 pm AEST. Perth overlaps from about 11:30 am onwards.
Try before you commit
Start with a one-week paid pilot
Before committing to a month, you can start with a one-week paid pilot. The developer works on a real ticket from your backlog, in your repository and tools, with the same daily updates as a normal engagement. At the end you decide whether to continue, change developer or stop. The pilot is billed at the hourly rate for the hours worked, and the code is yours.
Replacement if it is not a fit
If the developer is not the right fit, tell us and we will replace the developer at no extra charge. The new developer is briefed from the shared notes and tickets, and we overlap the hand-over where we can so you do not lose momentum.
Hiring Node.js developers: questions
How much does it cost to hire a Node.js developer from India?
Indicatively, a full-time dedicated Node.js developer from RED SAG costs about $1,700–3,500 a month depending on seniority, and hourly work runs about $15–30 an hour. The rates table on this page shows the equivalent GBP, AUD, CAD and INR ranges. The final figure depends on the developer and scope, and is confirmed in the contract.
Can we hire NestJS developers or Express.js developers specifically?
Yes. We match on the framework your services already use. NestJS gives larger teams a clear structure with modules, dependency injection and decorators; Express or Fastify suit smaller services and existing codebases. Whether you hire Express.js developers or NestJS specialists, they follow your current choice rather than rewriting a working service to match a preference.
Which databases do your Node.js developers work with?
Mostly PostgreSQL and MySQL for transactional data, MongoDB where a document model genuinely fits, and Redis for caching, sessions and queues. For fintech and billing work we prefer a relational database because transactions and constraints protect the data when something fails halfway.
Can a Node.js developer handle our deployment and servers?
Our mid-level and senior Node.js developers can containerise services with Docker, set up CI pipelines and deploy to AWS, DigitalOcean or similar. For complex infrastructure such as Kubernetes clusters or multi-region set-ups, tell us early so we match you with someone who has done that specifically.
How soon can a Node.js developer start?
Usually within a week of our first call, depending on availability and how closely your stack matches the developer's background. If your product relies on something specialised, such as a particular message broker, we will tell you honestly if the best match needs a little longer.
What if the developer is not the right fit?
Tell us what is not working and we will replace the developer at no extra charge. The new developer is briefed from your tickets, the repository and our shared notes. You can also begin with the one-week paid pilot, which lets you judge the fit on real work first.
Can you take over a Node.js back end built by another team?
Yes. The developer starts by running the service locally, reading the data model and checking logs and error reports. You receive a short written assessment of risks, such as outdated dependencies or missing tests, before any significant change is made, so fixes are prioritised rather than guessed.
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Hire Node.js developers from RED SAG
Share a few lines about your idea. We reply within one working day with questions, a rough budget and the next step, with no obligation.
- Reply within one working day
- Fixed-price quote, no obligation
- You own the code and the data
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