Software Engineer, Backend Developer, Full Stack Developer

Overview

We’re building the future of payments and our Payments Digital Services team is shaping the next generation of experiences across payments and beyond. As a Backend Software Engineer, you’ll help bring this vision to life by working on a connected, modern platform that integrates with best‑in‑class tools and services, enabling customers to make smarter financial decisions and access innovative products.

End Date: Monday 01 June 2026
Salary: £57,300 – £85,000
Location: London
Hours: Full‑time
Working Pattern: Hybrid – at least two days per week or 40% of time in an office site.

• Deliver clean, architecturally sound, maintainable server‑side code (ideally full‑stack experience).
• Collaborate with stakeholders across the business to build and develop a world‑class product.
• Motivate the team past roadblocks to ensure features ship as effectively as possible.
• Guide design discussions and help the team balance flexibility, expediency, scalability, and performance.
• Partner with product and engineering leaders to constantly refine and iterate development processes.
• Champion new technologies and promote best development practices.
• Keep an eye on the future while proactively, yet pragmatically, tackling technical debt.

• In‑depth knowledge of Go (Golang).
• Experience building microservices, ideally deployed in containers on Kubernetes.
• Solid grounding in agile development practices.
• Experience with both RDBMS and No
  
  SQL data stores.
• Ability to diagnose problems across the stack (client, HTTP/network, server, database, OS) with sound rationale for decisions.
• Proven experience building large, concurrent, distributed applications.
• Experience developing and running large‑scale production environments in partnership with Dev Ops or SRE teams.
• A genuine interest in working in a fast‑paced startup, ideally in fintech or payments.
• A voracious appetite for learning and improvement.
• Preferred:
  Knowledge of PHP, real‑time low‑latency high‑frequency transaction‑based systems, event‑driven architectures.
• We recognise that skills are developed in many ways; if you have relevant, transferable experience we encourage you to apply.

• A generous pension contribution of up to 15%.
• An annual performance‑related bonus.
• Share schemes including free shares.
• Benefits you can adapt to your lifestyle, such as discounted shopping.
• 30 days’ holiday, plus bank holidays.
• A range of wellbeing initiatives and generous parental leave policies.

We know that great talent comes from many backgrounds. We invite applications from all qualified individuals and are committed to creating an inclusive workplace.