Lead & Staff JavaScript Engineers | Full Stack | Hyper-Growth Fintech & Tech-for-Good | Typescr[…]

Company: Owen Thomas | B Corp™
Apply for the Lead & Staff JavaScript Engineers | Full Stack | Hyper-Growth Fintech & Tech-for-Good | Typescr[…]
Location: London
Job Description:

We’re supporting a hyper-growth fintech client that is also tech-for-good. They’ve got big hiring plans for the year and are currently looking for Senior, Lead, Staff & Principal Full Stack Engineers to join the team. You’ll be working with Typescript, React.js, Node.js, Next.js & more, working to shape the product direction and technical architecture as they continue to scale their business and expand into new markets.

  • Own the end-to-end product lifecycle, from ideation and design to implementation, deployment, feedback, and measurement
  • Communicate new features with internal and external stakeholders, gathering input pre-implementation and supporting launches
  • Design and build intuitive, high-performance web interfaces for business users
  • Lead the design and delivery of high-impact, user-facing web interfaces with a focus on performance and usability
  • Establish and uphold engineering standards through testing strategy, documentation, and code review practices
  • Act as a technical mentor and multiplier, coaching engineers, unblocking teams, and raising the overall technical bar
  • Have 8-15+ years of experience in software engineering
  • Strong proficiency in React, TypeScript & Node.
  • Proven frontend & backend engineering skills
  • Experience working with Next.js, Express & PostgreSQL
  • Experience in high pace early-stage businesses, with the ability to work end-to-end across the entire product development process, taking high ownership & accountability.
  • Have experience mentoring engineers, and driving higher standards across the team.
  • Strong understanding of frontend & backend software engineering best practices

Nice to have:

  • Experience in regulated environments (ideally fintech)
  • Experience working with AI tooling
  • Location: 3 days hybrid in London
  • Start: ASAP

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Posted: June 6th, 2026