Lead Engineer at Techstars-backed FinTech for Good startup

Company: Jack & Jill
Apply for the Lead Engineer at Techstars-backed FinTech for Good startup
Location: London
Job Description:

Job Title

Lead Engineer

Salary

Not Disclosed

Company Description

Techstars-backed “FinTech For Good” startup building a fairer financial ecosystem

Job Description

As the foundational Lead Engineer, you will own the technical roadmap and architectural direction for a mission-driven platform tackling debt taboo. Working across a Kotlin-based stack, you’ll partner with the founders to scale a proven MVP into a high-impact product, balancing pragmatism with high-quality engineering to drive social change.

Location

London, UK

Why this role is remarkable

  • Direct technical ownership at a pivotal moment, shaping the architecture and culture of a founding team dedicated to social impact.
  • Backed by global powerhouse Techstars, you will work at the intersection of Open Banking and AI to solve a real-world societal issue.
  • High-autonomy, mission-driven environment where your code directly helps people escape debt and achieve long-term financial freedom.

What You Will Do

  • Lead end-to-end engineering decisions across the Kotlin backend, native mobile apps, and AWS serverless architecture to ensure scalability.
  • Partner directly with the founding team to translate product vision into technical reality, shaping the roadmap rather than just executing it.
  • Define and raise engineering standards, establishing code quality processes and mentoring the team as the organization grows.

The ideal candidate

  • Seasoned full-stack engineer with deep production experience in Kotlin and a strong understanding of system-level architectural trade-offs.
  • Product-minded leader who thinks like a founder and is excited by the possibilities of leveraging Open Banking and AI for good.
  • Comfortable with AI-assisted development tools like Claude Code and Copilot to multiply velocity while maintaining high engineering craft.

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Posted: May 17th, 2026