Lead Fullstack Engineer

Location: Hybrid (2 office days in London minimum)

Contract Length: 2 Months (with scope for extension)

Interview Process: 1 Stage, MS Teams

We are supporting a next-generation SaaS payment assessment and orchestration platform in hiring a Lead Full Stack Engineer to serve as the technical authority across a modern TypeScript, React and Golang stack.

This is a principal-level engineering role at the heart of an ambitious fintech programme, combining Open Banking data, an AI‑driven policy and arbitration engine, and a real‑time payment orchestration layer. The successful candidate will own architecture decisions, set engineering standards and mentor a growing squad of senior and junior engineers from proof of concept through to pilot and beyond.

This role suits a hands‑on technical leader with deep full stack experience across TypeScript and Golang, a strong grasp of multi‑tenant SaaS architecture, and the credibility...