backend developer
Hire a Backend Developer
A backend developer builds the part of your product users never see but always feel: the APIs, databases, authentication, and business logic that keep everything correct, fast, and secure. At Bracket Coder, our backend engineers work primarily in Django/Python and Node.js, and we treat the server side as the source of truth — the place where data integrity, permissions, and money are actually enforced, not just displayed on a screen.
When you hire a backend developer from us, you get a senior engineer, part of a team led by Sharan Sifat, who has shipped real production systems: payment flows, real-time notifications, file delivery, and third-party integrations. We scope honestly, write code your team can maintain, and hand over documentation and tests instead of a black box. Whether you need a single slow endpoint fixed or a full API designed from scratch, we size the engagement to the work in front of us rather than to a template.
APIs and data modeling done right
Good backend work starts with the data model. We design schemas that match how your business actually behaves — the right relationships, constraints, and indexes — so invalid states become impossible rather than merely discouraged. On top of that we build clean, predictable APIs: RESTful endpoints with Django REST Framework or Express/Nest on Node, with sensible pagination, filtering, versioning, and clear error responses. We treat the contract your frontend or mobile app depends on as a real interface: we document it, keep it stable, and version it when it has to change. Where it earns its place we add GraphQL or typed clients. The goal is an API that is obvious to consume and cheap to evolve as the product grows, backed by clean migrations so schema changes ship safely.
Authentication, authorization, and security
Security lives on the server, so that is where we enforce it. We implement authentication that suits your product — session or token-based, JWT, email OTP, or OAuth with Google and other social providers — and back it with real authorization: role-based access control and per-object permission checks on every endpoint, never trusting the client. We validate and sanitize input, defend against the OWASP Top 10, rate-limit sensitive routes, hash credentials properly, and keep secrets out of source code and URLs. Payments, personal data, and admin actions get extra scrutiny, including audit trails and webhook signature verification. If you are handling money or PII, we treat correctness and least-privilege access as non-negotiable rather than a later phase.
Performance, scaling, and integrations
As traffic grows, the backend is usually where things slow down first. We profile real queries, remove N+1 problems, add indexes, and cache hot paths with Redis; slow or heavy work moves into background jobs with Celery or a queue so requests stay fast. For live features we build WebSocket channels for presence, chat, and push notifications. Most products also succeed or fail on their integrations, so we connect payment gateways like Stripe, transactional email, SMS and OTP providers, object storage such as S3 or Bunny, and whatever third-party APIs you depend on — with retries, idempotency, and webhook handling that survives failure. We add structured logging and monitoring so you can see what production is actually doing.
How hiring a backend developer works
You can hire a backend developer from Bracket Coder for a fixed-scope build, an ongoing retainer, or a short engagement to fix or harden something specific. We start with a discovery call to understand your data, users, and constraints, then give you an honest estimate and a realistic timeline — no inflated scope to pad the invoice. You receive working code in your own repository, along with migrations, tests where they add value, and documentation, plus a walkthrough at handover. If you already have a frontend or a Flutter app, we plug into it; if you do not, our full-stack team can build that side too. Either way, you keep ownership of everything we write.
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Frequently asked questions
Which backend stack do you use?+
Primarily Django/Python and Node.js (Express or Nest), usually with PostgreSQL, Redis, and Celery. We choose based on your existing stack, team, and requirements, and we will not push a rewrite you do not need.
Can you work on an existing backend, or only new builds?+
Both. We regularly join existing codebases to add features, fix bugs, optimize slow queries, or harden security. We read your code and data model before changing anything, so we understand the system rather than guessing at it.
How do you handle security and sensitive data?+
We enforce authorization on the server, validate all input, defend against the OWASP Top 10, verify webhook signatures, and keep secrets out of code and URLs. For payments and personal data we add audit trails and least-privilege access.
How much does it cost to hire a backend developer?+
It depends on scope. After a short discovery call we give you a fixed estimate or an hourly/retainer rate. A small fix can be a few days; a full API build is typically a few weeks. We scope honestly instead of quoting a single headline number.
Do you provide tests and documentation?+
Yes. You get migrations, automated tests where they add value, API documentation, and a handover walkthrough. Everything lives in your repository so your team can maintain and extend it without us.
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