Referment logo

Software Engineer (App: 9-462)

Referment
Department:Software Development
Type:ON-SITE
Region:Greater London, England
Location:London, England, United Kingdom
Experience:Mid-Senior level
Estimated Salary:£60,000 - £90,000
Skills:
C#BACKENDAPIREACTDEVOPSMICROSERVICESDDDCQRSFINTECHPAYMENTS
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Job Description

Posted on: October 13, 2025

Referment is working with an exciting early-stage fintech that’s on a mission to build the world’s first instant and open global payments network. This is a rare opportunity to join at the ground floor of a company that’s tackling one of the biggest challenges in financial services today. As the first engineering hire, you’ll work directly with the founder to design, build and launch the core platform. Expect a fast-paced, hands-on role where you’ll write code daily, ship quickly using modern tools and AI, and influence key architectural decisions that will shape the future of the business. What You’ll Do

  • Build backend services and APIs in C#
  • Integrate with payment providers and external systems
  • Contribute to eventual front-end development (React)
  • Collaborate directly with the founder on product and technical strategy
  • Ship fast using AI to design, code, debug and deliver at pace

What We’re Looking For

  • Strong C# development experience (non-negotiable)
  • Comfort across backend, frontend, DevOps, and systems integration
  • High-agency, entrepreneurial mindset – you take pride in your work
  • Excited by using AI to build faster and smarter
  • (Desirable) Experience in payments/fintech, enterprise architecture (DDD, CQRS, microservices)
  • (Desirable) Ambition to be a founder or early-stage leader in the future

Why apply?

  • Shape the future of global payments at the earliest stage
  • Work at the bleeding edge of AI-driven development
  • High-impact, hands-on role with huge scope for ownership
  • Direct mentorship and collaboration with the founder
  • Competitive package with equity potential

If you’re a talented C# engineer with ambitions beyond just writing code — and you want to leave your mark on the payments industry — this is your chance. Apply now via Referment or drop me a message to learn more. #Referment

Originally posted on LinkedIn

Apply now

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