Node.js Development Services for backends you can keep running
We design, build, test and run the server side of your product in Node.js and TypeScript: APIs, payment webhooks, background jobs, real-time features and upgrades off old versions. Engineers work from Delhi and Lucknow, our New York office keeps US business hours, you see working code every week, and the repositories sit in your company's name.
On this page
What our Node.js development services include
Node.js development services cover the server side of a product written in JavaScript or TypeScript: the API your web and mobile apps call, the webhooks a payment provider sends, the jobs that run after a customer clicks, and the connections that keep a screen live. We scope that work, build it, test it and run it, or hand it to your team with the documents to keep it going.
Solutions we take on in Node.js
- REST or GraphQL APIs behind a web app, a mobile app or both
- Order and payment flows driven by provider webhooks, such as PayFast or Stripe
- Live features: chat, order status and notifications over WebSockets or Server-Sent Events
- Background jobs for email, imports, file processing and retries
- Server code inside a Next.js app: route handlers and server rendering
- Small APIs and redirects at the network edge on Cloudflare Workers
- Admin panels and internal tools where each role sees different records
- Upgrades off end-of-life Node.js versions, and takeovers of services another team left
Five ways we work on a Node.js codebase
| Engagement | The work | What you hold at the end |
|---|---|---|
| Build | A new service or app, from discovery to launch | The running service, its tests, an architecture record and runbooks, all in your repositories |
| Extend | New features on a Node.js service that is already live | Each change merged through your review and your pipeline, shown in a weekly recorded demo |
| Upgrade | Moving off an end-of-life Node.js line or an old framework version | The service on a current long-term support release, with the breaking changes listed and covered by tests |
| Rescue | A service another team left behind, or one that keeps failing | A written read of the code and an order of fixes, agreed before any large change |
| Run | Support once the service is live | A named retainer team for fixes, version upgrades and small features |
Where Node.js suits a product, and where we would choose otherwise
Node.js runs JavaScript on the server around a single event loop. That design is at its best when a request spends most of its life waiting on a database, a payment provider or another API, and at its worst when one request needs the processor to itself. The Node.js guide to the event loop explains why heavy work on that loop holds up every other caller.
It also lets one language run the whole product. A React or Next.js web app, a React Native mobile app and a TypeScript server can share the same types, so a renamed field breaks the build instead of a customer's screen. And the people exist: 49.1 percent of professional developers in the Stack Overflow 2025 Developer Survey reported extensive Node.js work that year.
| What your product does most | Our usual recommendation | The reason |
|---|---|---|
| Waits on databases, payment providers and other APIs | Node.js | One process keeps many waiting requests moving while the slow calls are out |
| Holds connections open for chat, live status or alerts | Node.js | An open connection that is mostly idle costs the event loop very little |
| Shares data shapes with a React or React Native front end | Node.js with TypeScript | One language and one set of types from the screen to the database |
| Trains models or cleans large datasets | Python, with Node.js serving the results if you like | The libraries that work depends on are written for Python first |
| Computes hard on every request, such as transcoding | Go or Rust, or Node.js with the work moved to worker threads | Long computation on the main thread stalls every other request |
| Already runs well on PHP and Laravel | Extend it with our Laravel developers | A second backend language doubles what you must hire for later |
Who we build Node.js backends for
- SaaS founders whose web app and mobile app need one API with one set of rules, often starting as an MVP.
- Online stores and print shops whose orders change state when a payment provider calls back.
- Operations teams that want dashboards and internal tools showing live records to several roles.
- Product teams on an old Node.js release who need the upgrade done without stopping feature work.
Monolith, microservices, serverless or edge: picking the shape first
The shape of a Node.js backend decides more of its running cost than the framework does, so we settle it in discovery. For most first releases we recommend one deployable service with firm module boundaries inside it. Splitting into separate services earns its overhead when separate teams must release on separate days, or when one part has to scale on its own.
| Shape | Suits | What it costs you |
|---|---|---|
| One service with modules | Most first releases, built and run by one team | Discipline: module boundaries that nobody enforces turn into a tangle |
| Microservices | Several teams shipping on their own schedules | Network calls between services, tracing, and versioned contracts for each one |
| Serverless functions | Traffic that comes in bursts, or jobs that run now and then | Cold starts, run-time limits, and pooling so each function does not open its own database connections |
| Edge runtime | Small handlers that answer close to each caller | Only part of the Node.js API, and tight CPU budgets per request |
The edge is the shape we run ourselves. Ten /api/ routes on digitalheroesco.com, from call booking and careers applications to the live chat and a Stripe webhook, answer from one Cloudflare Worker. Workers support a subset of the Node.js APIs once the nodejs_compat flag is on, and the free plan allows 10 milliseconds of CPU per request, which keeps every handler short.
Each route is an ordinary Node-style (req, res) function, in the shape Vercel expects. The first of them were written for our earlier Vercel deploy, and when we changed hosts we wrote one adapter rather than rewriting them. About 1,800 lines of booking and email logic moved across untouched, with nothing to re-verify.
That move set a rule we bring to client work. Business logic should not know which host runs it. Keep the host behind a thin layer, and a later move from a server to serverless or to the edge becomes a new adapter rather than a rewrite. When the API itself is the product, with partners and outside callers, our custom API development company in USA page covers contracts and versioning in depth.
Node.js web development we have shipped, for a client and for ourselves
Two builds we can describe in detail. Neither has a results figure we are allowed to publish, so this section gives none.
SpeedyPrint, a web-to-print store
We built SpeedyPrint in 2026 and describe it here with the client's permission. Shoppers design labels, race numbers, stamps and trophies in the browser, and a CSV upload turns one design into a batch where every item carries its own name or number. Proofs and production files keep an order status history, and one admin panel serves customers, administrators and production staff, each with different access.
The server side lives inside the Next.js 15 app as TypeScript route handlers on the Node.js runtime, over a Supabase database. Checkout goes through PayFast. When PayFast calls back, the handler first confirms the call came from PayFast and that the signature matches; only then does the order move to paid. The same layer sends the store's transactional email.
The API behind this website
The Worker described in section 03 is ours end to end. Its chat route powers the live chat assistant on this site, with the conversations stored in PostgreSQL on Supabase and answered from a CRM we also built, AI copilot included.
Booking and careers requests send their email through Resend, and a scheduled run every 30 minutes retries queued work and tidies the analytics data. Our CTO leads the architecture and code review of the chat assistant.
Our Clutch profile shows 5.0 across 66 verified reviews, as checked on 13 October 2026. More finished builds, in the stacks they were built with, are on our custom software development page.
Six stages of a Node.js build, and what you approve at each
A first version usually takes 8 to 12 weeks, and a production platform 16 to 28. Nothing moves to the next stage until you have seen the output of the last one, and any change of scope arrives as a written request that states its cost and its effect on the date.
- A call, under NDA. Thirty minutes on what the service must do and what it talks to. A one-page mutual NDA is in place from the moment the call is booked, and every form on this site gets an email reply within 24 hours.
- A two-week discovery with its own price. We read your repository if one exists, map the outside systems and how each can fail, and size the work. It ends in a fixed price for a written scope, or in advice not to build, and you keep the documents either way.
- The contract and the architecture record. Endpoints and data shapes written down, often as an OpenAPI document, with the Node.js release, the hosting shape and the database chosen and the reasons noted. Our CTO signs off the architecture before build sprints begin.
- Build sprints, each one to two weeks long. Each week ends in a recorded demo of working code with a note of what shipped and what slipped. If a week passes with no demo, that week goes unbilled.
- Testing and release. A separate QA team tests each build before you see it. Load tests run at your expected peak, then the release goes to staging and on to production with a way back ready.
- Handover, or a retainer. You receive the architecture documents, the runbooks and a knowledge transfer session for whoever runs the service next, or a named team stays on for fixes and upgrades.
For a week-by-week calendar of the six stages from your own hour estimate, use the free software project timeline calculator.
The tools under our Node.js backends
Six items, each one in use in code we have shipped: the ten API routes and the scheduled job on this site, SpeedyPrint, or the mobile apps on our custom software page. We name nothing our own repositories and named client builds do not use.
- Node.js, in JavaScript or TypeScript: route handlers, webhook receivers and scheduled jobs.
- Next.js: route handlers and server rendering when the backend lives inside the web app, with React on the page.
- Cloudflare Workers: APIs at the network edge, with the
nodejs_compatflag on. - PostgreSQL on Supabase: the data, with row-level security deciding which rows each role can reach.
- Payment and email providers: PayFast and Stripe webhooks, and Resend for transactional email.
- React Native: the mobile app on the same API, which is our CTO's default for apps on both iOS and Android.
If your service already runs on Express, Fastify or NestJS, we work inside the framework you have rather than swap it. For checks during the work, our free JSON to TypeScript converter turns a sample response into types, the JWT decoder reads a token's claims in the browser, and the cron helper explains a job's schedule in plain words.
Release lines, npm packages and the checks on every request
A Node.js service needs patching even when nobody touches its features. Each even-numbered release line gets about 30 months of fixes after it becomes long-term support, then stops. The table gives the four lines that matter on 22 October 2026, from the Node.js release schedule read that day.
| Node.js | Status | For a service running it |
|---|---|---|
| 20 | End of life since 30 April 2026 | No more security fixes; plan the upgrade now |
| 22 | Maintenance, fixes until 30 April 2027 | Safe for now; put the move on next year's roadmap |
| 24 | Maintenance since 20 October 2026 | Supported, and a sound target for an upgrade from 20 or 22 |
| 26 | Current, becoming long-term support on 28 October 2026 | The line for a service started from November onward |
The npm supply chain
Much of the code in a typical Node.js service arrives through npm, written by people outside your company. In September 2025, CISA warned that a self-spreading worm had compromised more than 500 npm packages and was stealing GitHub tokens and cloud keys. Its advice was to review dependencies, pin versions to known good releases and require phishing-resistant sign-in on developer accounts.
In a repository, that advice turns into four habits worth asking any vendor about: a committed lockfile, installs with npm ci in the pipeline, a second reviewer for every new package, and multifactor sign-in on the GitHub and npm accounts of everyone with access. Keys belong in the host's secret store; on this site's Worker they are set as secrets and reach the handlers through process.env at run time.
Checks a request passes before the handler runs
The OWASP API Security Top 10 lists unrestricted resource consumption among the main API risks, and the cheapest defence is to refuse bad requests early. Figure 1 shows the order of checks we recommend for any endpoint that anyone on the internet can call.
Underneath sit TLS on every connection and AES-256 encryption at rest for data in Supabase-hosted PostgreSQL, as Supabase states. We hold no SOC 2 or ISO 27001 report and claim none here. When a service stores protected health information, we sign a Business Associate Agreement whenever our team handles it.
Outsourcing Node.js development without giving up control
The model should follow one fact: whether anyone on your side can review backend code. If nobody can, buy delivery as well as hours, so a lead of ours answers for the result. If you only need one engineer in your standups, that is a different purchase with its own page, hire Node.js developer, which covers the interview and the start date.
| Model | Best when | Who answers for the result | Billing |
|---|---|---|---|
| Fixed-scope build | The work has a clear finish line, such as a first release or one migration | Our lead, measured against the written scope | Discovery priced on its own, then a fixed price |
| Dedicated team | A product that keeps changing, with a roadmap rather than a scope | Our lead, with engineers and QA in the team | Monthly, usually for a quarter or more; how we staff one |
| Retainer after launch | A live service that needs fixes, upgrades and small features | A named team that already knows the code | Monthly, from one senior engineer and one designer |
What stays yours
Keep the Git repositories, the npm organization, the cloud and database accounts, the CI secrets and the payment provider's dashboard in your company's name from the first sprint, and give our team access you can remove in one step. The MSA assigns you everything made for your project once it is paid in full; libraries and tools we had before it began stay ours.
You sign with Digital Heroesco LLC in the US or Digital Heroes Technologies Pvt Ltd in India, and the MSA says which; US work usually falls under New York law. Finished work can stay out of our portfolio if you say so in writing.
Hours that meet the US day
Our engineers in Delhi and Lucknow keep working hours that overlap New York's, and our New York office answers on the same business day, 9 AM to 6 PM Eastern, Monday to Friday. India stays on UTC+05:30 all year, so the gap to New York is nine and a half hours in summer and ten and a half in winter. The free time zone planner shows the shared hours for your city.
What Node.js projects cost on published benchmarks
We publish no price list. Your fixed price follows discovery, and a monthly figure follows a call about hours and seniority. To check any quote against the market, start with the GoodFirms 2026 cost survey of more than 100 software firms, taken in September and October 2025.
GoodFirms puts small builds under $30,000 over one to three months, medium builds at $30,000 to $100,000 over three to six, and large builds at $100,000 to $200,000 over six to twelve; enterprise systems start above that. By hourly rate, typical US quotes for enterprise work run $100 to $250 an hour, while 56.3 percent of the firms surveyed charge $20 to $50.
Freelance rates sit lower again: Upwork's Node.js cost page reports $18 to $38 an hour for past Node.js contracts worldwide, with a median of $25. For a whole new product, our custom software cost guide puts a focused first version at $40,000 to $150,000. After launch, GoodFirms finds upkeep running at 10 to 20 percent of the build cost each year, and a Node.js upgrade every couple of years comes out of that budget.
Five things that push the price up a band
- Outside systems: each payment provider, CRM or shipping API brings its own sandbox, keys, webhooks and failure cases.
- Live traffic: open connections for chat or status updates need load testing at your real peak.
- Old data: records moved out of a previous system and checked line by line.
- Versions to climb: an upgrade from an end-of-life Node.js line with old packages that have no current release.
- Regulated data: health or payment records add audit logs, agreements and extra review.
Two free calculators run the numbers for your case: the software development cost calculator for the build, and the software maintenance cost calculator for the years after it.
Six questions for any Node.js app development company
Put the same six to every firm on your shortlist, us included, and compare the answers in writing. A vague reply to the second or third deserves the most attention, because those two decide what you can do if the relationship ends.
- "Which Node.js release will the service run on, and when does it stop receiving fixes?" A good answer names a long-term support line and a date from the release schedule. Ours, for a build that starts in November, is 26.
- "Whose accounts hold the code, the packages and the cloud bill?" The only safe answer is yours, from the first day, with the vendor added as a member.
- "How do you stop a bad npm package from reaching production?" Listen for a lockfile,
npm ci, a review of each new dependency and multifactor sign-in on developer accounts. - "What will I see each week?" Working software in a recorded demo, not a status report. Ours comes with a note of what shipped and what slipped.
- "How does your webhook handler know the call is genuine?" It checks the sender and the signature before it changes any record, as SpeedyPrint's PayFast handler does.
- "What happens after launch, and if your developer leaves?" Runbooks, architecture notes and tests in your repository, plus either a retainer or a handover session.
The same test applies when you outsource custom software of any kind: one accountable lead, working code every week, and accounts you control.
The people who write and review the code
Delhi is our engineering headquarters, with 35 people covering web platform, backend, frontend, mobile, QA, DevOps and site reliability, as well as operations and finance. Lucknow has 22 more: full-stack and web developers, project managers, QA and UI/UX design. A Node.js project draws its engineers and its testers from those two teams, and one accountable lead owns the build from discovery to release.
Our CTO, Divyansh Singh, owns the architecture and the engineering standard on custom builds, and Node.js is part of his own stack. His rule for generated code is that nothing goes in that the team cannot walk through line by line. Leadership and US account directors sit at our New York headquarters.
Two public records let you vet us before the first call. Dun & Bradstreet lists us under DUNS 650878346, the UN Global Marketplace carries us as a Tier 1 supplier, and our credentials page explains how to look up each one.
One honest limit: our engineers work in India. If your contract or security policy requires every engineer to be based in the United States, we are the wrong firm for it, and we would rather say so on the first call.
Short answers on cost, timing and ownership
What are Node.js development services?
They are the design, building, testing and running of a product's server side in Node.js: the API behind web and mobile apps, webhook handlers for payments, background jobs and real-time features. A provider may also upgrade an old Node.js service or take over one another team built. With us, a build starts with a two-week discovery and shows working code every week.
What kind of applications can you build with Node.js?
Anything whose server mostly waits on other systems: APIs for web and mobile apps, stores and booking systems driven by payment webhooks, chat and live dashboards, admin panels and internal tools, and small APIs at the network edge. It is a weaker fit for model training or heavy computation on every request, where Python, Go or Rust usually serve better.
How much does it cost to develop a Node.js app?
On the GoodFirms 2026 survey, small builds come in under $30,000, medium builds at $30,000 to $100,000 and large builds at $100,000 to $200,000, with US enterprise rates of $100 to $250 an hour. Our cost guide puts a focused first version of custom software at $40,000 to $150,000. We give our own fixed price after the two-week discovery.
How long until a first version is live?
A first version usually takes 8 to 12 weeks after discovery, and a production platform 16 to 28. Discovery itself is two weeks. An upgrade off an end-of-life Node.js release has no standard length: it depends on how many of the service's packages lack a current version and how much of it has tests, which discovery finds out.
What do I gain by handing backend work to an outside team?
A working team with a lead, engineers and QA, usually put together in one to three weeks, without running a hiring search yourself, and one company accountable for the result. Against that, you give up some say over who does the work day to day, so keep the accounts in your name and insist on a weekly demo. For scale, the BLS puts the median US software developer wage at $135,980 a year, before benefits.
Can I outsource the work if I am not technical?
Yes, if you buy a fixed-scope build or a dedicated team rather than one developer. In both, our lead reviews the code, so you judge the product rather than the pull requests. Your part is to explain what the system must do, watch each weekly demo and say what is wrong with it. Discovery writes your words down as a scope you can check.
Who keeps me updated, and how do I track progress?
One accountable lead owns your build and is your contact. Most focused builds run with three to five people, a tech lead, a designer and one or two developers, with QA and project communication covered inside that group. Every week ends in a recorded demo of working code, with a note of what shipped and what slipped, and the commits land in your repository as they are written.
Can you review or take over an existing Node.js service?
Yes. The two-week discovery is priced on its own, so it works as a review: we run the service, read its tests and deploy path, and write down its risks, such as an end-of-life Node.js release, unpinned packages or handlers that swallow errors. You receive that note and an order of fixes, and you can stop there with the documents in hand.
Who owns the code once the project ends?
You do. The MSA assigns you everything made for your project once it is paid in full; only libraries and tools we had before it began stay ours. The repositories, npm organization and cloud accounts sit in your company's name throughout, and a one-page mutual NDA covers anything you show us from the moment a call is booked.
Last reviewed .
Describe the backend in a few lines, then book the scoping call
Tell us what the service must do, what it connects to, which Node.js version it runs today if it exists, and who on your side reviews code. A 30-minute call comes first and carries no obligation; discovery comes next only if you want it. Book a call with a Node.js lead.
What clients say after launch.
Published reviews from our Fiverr profile, reproduced word for word. 397 public reviews across 4 gigs, from clients in 36 countries. Read them all on Fiverr.
Saurab did an excellent job. He understood the requirements quickly and translated them into a high-quality product delivered on time. I’m very happy with the collaboration and look forward to working together on future projects. Excellent Job done!
This really streamlined how we manage things internally its simple effective and already prevented a missed renewal
Everything was delivered exactly as we needed without unnecessary extras just a smooth and professional process from start to finish really met expectations
They made the whole process very easy for me even though I am not technical at all they explained things simply without confusing me The website looks professional and gives a lot more trust for my repair business
the team here made a very easy to use instructions and understand even without a technical background The dashboard made it simple to see key metrics and make decisions quickly
Great experience working together ,I needed a small, clean, and fast website for my resume and LinkedIn services, and this was delivered exactly as discussed. Communication was clear from the start, and he understood that I didn’t want anything fancy just something professional, mobile-friendly, and easy for clients to contact me.
Reviews are reproduced as published on Fiverr, captured 2026-08-03. Fiverr shows the buyer's username and country publicly; no other client detail is used here.
Why work with Digital Heroes
115 people in New York, Delhi, Lucknow, London and Sydney, shipping ecommerce, web, software and mobile work for founder-led brands. Senior engineers only, no account-manager relay, and the same team from kickoff to launch.
- Shopify Select Partner, as listed in the Shopify Partner Directory
- Tier 1 registered supplier on the United Nations Global Marketplace, which requires audited company documentation
- Top Rated Plus on Upwork, the bracket for the top 3% of talent by client outcomes
- 397 public five-star-weighted reviews across four Fiverr gigs, from clients in 36 countries
- DUNS verified business, No. 650878346, so procurement can check us before signing
- Listed by Clutch in Top 1000 Global B2B Companies and Top Web Designers 2024
- Verified profiles on GoodFirms, DesignRush, Digital.com, AppFutura and TopDevelopers
- 2,000+ brands built across 40+ countries, with $50M+ in client revenue scaled
More from Divyansh.
Chief Technology Officer · Lucknow · 57 posts on the site
Published .
