Senior Fullstack Developer/Tech Lead

Job Description:

The opportunity

We're working with a well-backed London fintech operating in Embedded finance and open banking. They help SMEs access Real Time payments, business lending and financial data services and they're scaling fast, with a growing loan book and bank-grade platform ambitions.

This is a senior IC role with genuine technical leadership. You'll be the onshore engineering lead owning architecture, code review standards and day-to-day technical direction for a distributed engineering team, while remaining hands-on in the codebase.

What you'll own

• Technical leadership of a distributed team architecture decisions, code review culture and engineering standards
• A live platform migration from Legacy Angular/.NET onto a modern NestJS/Next.js monorepo currently in flight and progressing fast
• Greenfield architecture decisions on a Partner API, API gateway layer and new lending product surfaces
• Day-to-day collaboration with an offshore team of five engineers who own features end-to-end the right person will treat them as peers, not a delivery resource
• AI-augmented engineering workflows the team uses Claude Code heavily and expects their lead to embrace and optimise AI-assisted development

The stack

Next.js 15React 19NestJSTypeScriptNode.jsGCPPostgreSQLMicroservicesApigeeCloud RunOpen Bankingshadcn/uiPostHog

What we're looking for

• Actively hands-on you've been writing production code in the last six months
• Comfortable leading offshore or distributed engineers as collaborators, not just output owners
• Strong code review discipline and a high bar for quality
• Fluent in AI-augmented development workflows Claude Code, Cursor, Copilot or equivalent
• Solid grasp of cloud-native architecture, ideally on GCP
• Fintech, open banking or payments exposure helpful but not essential if the engineering depth is there
• UK-based, able to commit to three days per week in Central London

Compensation and benefits

Base salary

£100k - £125k DOE

Equity

Employee Growth Shares

Health

Private medical

Pension

Company contribution

The process

• Stage 1 introductory conversation with the CTO
• Stage 2 technical deep-dive and programming exercise using Claude
• Stage 3 culture-fit conversations with the wider team and executive leadership

£100000 - £125000/year

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