Backend Engineer – FinTech Platform, London

About the Role

As our Backend Engineer, you will play a critical role in building and scaling the infrastructure that powers nsave’s financial services. Reporting to the CTO, you’ll work closely with the CEO and the broader engineering team to architect, ship, and scale resilient, high‑performance systems serving tens of thousands of users across multiple jurisdictions.

Location

Full‑time, on‑site role based in London.

Who you are

• Breadth in platform and infrastructure: familiar with backend architecture, databases, site reliability, infrastructure as code, and continuous deployment.
• Strong software engineering fundamentals: build and optimising software systems with solid clean software principles, layered abstractions, and trade‑offs.
• A supportive teammate: care about operational health and enabling other engineers to iterate quickly and ship fast, with a focus on developer operations.
• Business‑oriented decision maker: technical choices informed by product and business context, navigating speed versus quality.
• Comfortable designing secure systems: build and manage the complexity of a financial services system with high security requirements.
• Experience in fintech, startups, or regulated environments is a plus.

How You’ll Make a Difference

• Design, implement, and own critical subsystems of our infrastructure — including service architecture, reliability, build and release, security, and integration with compliance and banking services.
• Proactively improve system compliance and health by identifying weak spots and prioritising projects to address them.
• Adopt a user‑centred mentality, responding quickly to changing requirements and shifting priorities.
• Scale the engineering team by driving adoption of best practices, interviewing candidates, defining new engineering processes, and supporting teammates as we grow.

Benefits

• nsave Share Options (subject to eligibility and plan rules)
• 25 days annual leave plus UK public holidays
• Visa sponsorship available
• Private medical insurance
• Free monthly gym membership (via hussle)
• £500 health & wellness budget
• Individual learning & development budget
• Season ticket loan scheme
• Cycle to work scheme

nsave is an equal opportunity employer. We are committed to creating a diverse and inclusive workplace and welcome applications from all backgrounds, identities, and experiences. We do not discriminate on the basis of age, gender, ethnicity, religion, sexual orientation, disability, or any other protected characteristic.

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