Backend and API development in Chennai
A Chennai SaaS company selling to customers across the Americas, Europe and Asia has no quiet hour. Somebody, somewhere, is always using the product, so a database migration, a schema change or a queue backlog cannot wait for the weekend. Many of these backends began as a single well-built application a decade ago and now carry more modules, integrations and background jobs than their original design imagined.
We do the backend work that keeps such a product running while it changes. Schema migrations done in expand-and-contract steps so there is no downtime window, heavy jobs moved onto queues that survive restarts and report their own health, a module carved out into its own service only when the profile says it is the bottleneck, and APIs versioned so integrations built years ago keep working. We work in Node and Python, inside your codebase and your release process.
Chennai is where Indian SaaS learned to sell to the world. Zoho is headquartered here and has grown without venture capital. Freshworks was founded here in 2010 by two former Zoho employees, and Chargebee was started in a Chennai apartment a year later by a team with Zoho roots, with Freshworks as an early customer. That lineage produced a distinctive kind of company: product-led, careful with money, selling to small and mid-sized businesses on several continents from offices in Chennai. Chennai's SaaS teams tend to be strong on product and short on specific capacity, not on talent in general.
The city's second identity is industrial. Chennai is often called the Detroit of Asia, with vehicle plants including Hyundai's and BMW's on its outskirts, a large base of component and electronics manufacturers, and a major port. Those firms have the same problem as manufacturers everywhere in India: their operations have outgrown the spreadsheets and older systems that run them, and their information arrives late and in the wrong format. Around the port, freight forwarders, customs brokers and warehouse operators face the same problem with paperwork instead of parts, and the cost of a lost document is a container that sits on the quay.
Its third is healthcare. Chennai is often called the health capital of India, and hospital groups such as Apollo Hospitals and specialist centres such as Sankara Nethralaya draw patients from across the country and abroad. Healthcare software here has to earn trust. Health records are among the most sensitive data there is, and hospital systems increasingly need to exchange data with each other and with the national digital health stack rather than sit in isolation. Referrals, international patient coordination, patient apps and group-wide reporting all need building. Getting consent, access logging and integration right matters more than the interface.
We are in Bengaluru and share your time zone, so the working day is the same on both sides and a question asked in the morning is answered that morning. You talk directly to the engineer who writes the code. Most of the work happens in your repository, your issue tracker and a shared chat channel, which suits teams used to working in writing, and the runbooks and architecture notes are written as we go.
We are the right fit for a defined piece outside your team's usual specialism, a migration with an end date, or the gap while your next hire serves their notice. Start with a fixed-price two-week piece and judge us on what ships. Chennai agencies and product studios can also bring us in white-label, under their own name.
Four ways this arrives.
We read the code, write down what it does versus what everyone believes it does, and give you the list of the five things most likely to page someone at night. Then we fix those first.
Usually queries, not architecture. We profile under real traffic, fix the plans and the indexes, and only then discuss whether anything needs splitting apart.
A mobile client, a partner integration, a public API. We design the contract first, version it properly, and write the docs your consumers will read.
Jobs that silently vanish, retries that duplicate charges, a queue nobody monitors. We make it idempotent, observable, and boring.
A moderated messaging backend where sends acknowledge in-band and the review runs behind them.
Read the write-up →Asked by Chennai teams.
How do you work with teams in Chennai?+
We are in Bengaluru and share your time zone, so calls, reviews and releases fit inside your normal working day. We work in your tools, Slack, GitHub and Linear or whatever your team already uses, and most of the conversation happens in writing, where it lasts. You talk directly to the engineer writing the code, from the first 30-minute call onwards, and runbooks and architecture notes are written into your repository as we go.
Can you work inside a mature SaaS product without slowing our team down?+
Yes. We read your code and conventions before changing anything, follow your review and release process, and take a defined piece of work, such as a billing migration, a new integration, a performance problem or an infrastructure move, so the changes stay in one place rather than spreading across the product. We work in Node, Python and TypeScript, inside your repository, and leave runbooks and architecture notes for your team.
How does your rate compare to hiring in Chennai?+
PayScale puts a mid-career software engineer in Chennai at about ₹12 lakh a year. Our published rate is $35 an hour, with a $5,000 minimum. That buys a senior engineer who writes the code, works in your Slack, GitHub and Linear, and starts within days, with no recruiting round, notice period or employment overhead. Begin with a fixed-price two-week piece at $2,800 and judge us on what ships.
Can you build software for Chennai's hospitals?+
Yes. FM360, the platform we built for a healthcare estate, runs its facilities and maintenance in production. For hospitals and diagnostic chains we build referral and patient-coordination platforms, patient apps in Tamil and English, and warehouses that join every branch's systems into one set of numbers. Consent is recorded per purpose, every access to a record is logged, and integrations use standards such as FHIR where the other side supports them.
Can you work in our existing codebase?+
Yes, and it is most of what we do. We do not require a rewrite as a condition of working with you. If we think a rewrite is genuinely the right call we will say so, with the reasoning and the cost, and you can decide.
What if the backend is in a language you do not list?+
Then we will tell you. We are useful in Node, Python and TypeScript. We can read Go and PHP well enough to migrate off them. We would not take a Rust or Elixir project and learn it on your budget.
Do you write tests?+
For anything with money, permissions or data loss in it, yes. We do not chase a coverage number. We will tell you which parts are covered and which are not in the handover notes.
Who owns the code?+
You do, from the first commit. Repositories live in your organisation. If we set them up, we transfer them before the first invoice.
What happens when the engagement ends?+
You get runbooks, architecture notes and a recorded walkthrough. We stay available for questions for a month at no cost, because a handover that needs us on retainer is not a handover.