When is Node.js a good choice for a backend?+
Node.js suits backends that handle many concurrent I/O-bound requests, such as APIs, real-time WebSocket services and integration-heavy systems, because its event loop handles many connections efficiently. It is especially practical when the frontend is React or Next.js, since one TypeScript language lets the team share types and validation across the stack.
Node.js or Python: which should we use?+
It depends on the workload. We use Node.js for APIs, real-time services and integrations, and Python for machine learning, OCR and data-heavy processing. Many of our systems use both: in our patient portal project, Node.js services handled the clinician queue and HL7/FHIR adapter while a Python FastAPI service handled OCR.
Can Node.js handle high traffic?+
Yes, when the system is designed for it: horizontal scaling across multiple processes or containers, connection pooling, caching, and queues to absorb bursts. In our financial services case study, containerised Node.js services on AWS ECS/Fargate scaled on queue depth and CPU thresholds. Long-running CPU-bound work should be moved off the main event loop.
Can you upgrade our old Node.js version?+
Yes. We audit dependencies, upgrade one major version at a time where necessary, fix breaking changes, and run the test suite and staging traffic on each step before production. If the codebase has few tests, we add tests around critical paths first.
Do you use Express, NestJS or something else?+
We have delivered Express services and Next.js route handlers in production, and choose the framework based on the size of the service and your team's familiarity. Whatever the framework, we add TypeScript, schema validation, structured logging and tests.
Can you build the backend for our existing frontend or mobile app?+
Yes. We design the API around the screens and flows your app needs, document it, and can share TypeScript types with a React, Next.js or React Native frontend so changes on one side are caught on the other.
Where is your team, and who owns the code?+
Our engineering team is in Islamabad, Pakistan, and works with clients worldwide, including the UK, US and the Gulf. You own the full IP, including source code, infrastructure definitions and documentation, deployed into cloud accounts you control.
