Full Stack Engineer

hackajob is partnering directly with Monument to hire for this role.

Full Stack Engineer

London (Oxford Circus) | Hybrid: 2 days per week | Reports to: Head of Mobile

About Monument

Were building something genuinely rare: a financial brand designed for the mass affluent, the professionals, entrepreneurs and ambitious savers that traditional banks have systematically underserved for decades.

We exist to make managing wealth simpler, smarter and more human, treating every clients wealth with the same care as if it were our own.

We have over £7 billion in client deposits, a fresh funding round and a place on the Future Fifty, the UKs top pre-IPO companies. The momentum is real.

The Opportunity

This is a build role for an engineer who wants to own their work end to end. You will design, develop and ship digital products that directly shape how Monuments clients manage and grow their wealth, working across the full stack from polished front-end interfaces to resilient back-end services.

For the right engineer, this is a rare opportunity: meaningful ownership on a product that matters, at a pre-IPO challenger bank, working with modern tooling and an AI-first engineering culture that prioritises outcomes over process.

What Youll Do Build, deploy and scale high-quality, secure and maintainable mobile applications across front-end and back-end systems, with full ownership of your code from architecture through to production monitoring.

Collaborate closely with Product, Design and Data colleagues to define problems, shape hypotheses and ship working solutions at pace.

Apply an AI-first approach to engineering, using tools such as Claude, GitHub Copilot and AI agents to accelerate development, testing and ideation without compromising quality or security.

Instrument everything you build, tracking performance, behaviour and conversion to inform data-driven decisions on what to build next.

Contribute to product strategy by identifying opportunities for technical innovation and automation across Monuments digital experiences.

Ensure operational excellence across your work, building for reliability, scalability and compliance in a regulated financial services environment.

Help define and evolve engineering standards, arch...