About the Role
We are looking for a Senior Full Stack Developer to join a CommIT team delivering mission-critical systems for a leading financial institution. You will own features end-to-end across the full stack, working in a secure, highly regulated banking environment where reliability, code quality, and disciplined process matter as much as speed.
This is a hands-on senior role on a layered enterprise architecture. You will be expected to operate confidently across all tiers — from the React client through to the core banking integration — and to raise the engineering bar for the team. We build with modern, AI-assisted workflows, so developers who are fluent with tools like Cursor and Claude Code will feel at home.
Architecture at a Glance
You will design and build across a layered banking architecture, understanding the responsibilities and boundaries of each tier and how data and transactions flow through them:
Client (React) ? BFF (Next.js / JavaScript) ? Middleware (.NET / C#) ? Core Banking
?Key Responsibilities
• Design, build, and maintain full-stack features end-to-end across the client, BFF, and middleware tiers.
• Develop responsive, accessible UIs in React and build the Backend-for-Frontend layer in Next.js / JavaScript.
• Implement and integrate middleware services in .NET / C#, connecting to core banking systems and third-party financial APIs.
• Write secure, well-tested, maintainable code, with unit and integration test coverage as part of the definition of done.
• Work within the bank's SDLC and governance — change management, environment promotion, security and compliance gates, code review, and release control.
• Participate in design discussions and code reviews; mentor team members and improve engineering practices.
• Collaborate with product, QA, architects, and the client's teams in a delivery-focused, client-facing setting.
