We’re partnering with an ambitious London-based payments start‑up looking to hire a hands‑on Lead Software Engineer to help shape the next generation of their platform as they scale.
This is a high-impact opportunity for a senior engineering leader who enjoys operating across architecture, platform engineering, product delivery, and technical strategy in a fast-moving environment.
You’ll play a key role in defining engineering standards, influencing product direction, and building scalable systems capable of supporting rapid growth within a modern payments ecosystem.
The Opportunity
Joining at an exciting stage of growth, you’ll work closely with founders, product teams, and engineers to design and deliver a highly scalable payments platform using modern cloud-native technologies.
This role combines:
- technical leadership,
- and mentoring responsibilities.
You’ll be expected to remain close to the code while driving best practice across the wider engineering function.
Key Responsibilities
- Define and evolve platform architecture across mobile, backend, and cloud infrastructure
- Lead engineering design decisions and establish scalable development standards
- Build and optimise high-performance backend services using Node.js
- Drive mobile architecture and delivery using React Native
- Own AWS infrastructure strategy, scalability, reliability, and security
- Work closely with product and leadership teams to shape technical roadmap
- Champion engineering excellence, DevOps culture, CI/CD, and automation
- Explore and implement modern AI‑assisted engineering tooling and workflows
Required Experience
We’re looking for a strong technical leader with recent experience of operating at Technical Architect, Principal Engineer or Staff Engineer level, with experience building scalable products within start‑up or high‑growth environments.
- Tech stack expertise – deep backend engineering expertise using NodeJS is needed, Typescript, familiarity with React Native, and strong knowledge around AWS infrastructure and cloud‑native architecture.
- Consumer product intuition for the demographic – consumer fintech experience ideally, but even adjacent experience with consumer apps focused on Millennials and Gen Z would be a signal of the product intuition sought.
- Startup mindset – looking for someone comfortable operating in a small, early‑stage team, where they’ll help own the tech and will be comfortable currently being without a senior peer to validate decisions against (prior early‑stage experience would be a strong signal).
- Architecture ownership – wanting candidates who’ve made architecture decisions at meaningful scale, so has a profile that evidence of that kind of decision making.
- AI as core leverage – LangChain, LangGraph, MCP, Claude Code, spec‑driven development, prompt versioning at production etc., rather than just using AI as a productivity tool.
What’s on Offer
- Opportunity to shape architecture from an early stage
- High ownership and autonomy
- Fast‑growing fintech business with strong leadership backing
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