Software Engineer, Backend Developer

Job Title
:
Backend Software Engineer

Location
:
London

Hours
:
Full-time

Working Pattern
:
Hybrid – at least two days per week or 40% of time in office.

Salary
: £57,300 - £85,000

End Date Sunday 02 August 2026

We support flexible working –  for more information on flexible working options.

Hybrid Working, Job Share.

We’re building the future of payments – the Payments Digital Services team is shaping the next generation of experiences across payments and beyond. Think digital identity, wallet‑based services, embedded finance, and new propositions redefining how customers interact with money, data, and value. As a Backend Software Engineer, you’ll play a key role in bringing this vision to life on a connected, modern platform that integrates seamlessly with best‑in‑class tools and services, helping customers make smarter financial decisions and access innovative financial products.

• Delivering clean, architecturally sound, maintainable server‑side code (ideally full‑stack experience).
• Collaborating with stakeholders across the business to build and develop a world‑class product.
• Motivating the team past roadblocks to make sure features ship as effectively as possible.
• Guiding design discussions and helping the team balance flexibility, expediency, scalability, and performance.
• Partnering with product and engineering leaders to constantly refine and iterate on development processes.
• Championing new technologies and promoting best development practices.
• Keeping an eye on the future while proactively, but pragmatically, tackling technical debt.

• In-depth knowledge of 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.
• And any of these would be great:
  • Knowledge of PHP.
  • Experience with real‑time, low‑latency, high‑frequency transaction‑based systems.
  • Experience with 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, with bank holidays on top
• A range of wellbeing initiatives and generous parental leave policies

Ready for a career where you’ll learn and thrive? Apply today and find out more.