Senior Software Engineer; Go-Lang

End Date:
Sunday 02 August 2026

Salary: £76,760 - £95,950

Location:

London

Hours:

Full time

Working Pattern:
Hybrid – at least two days per week (or 40% of time) at one of our office sites. Hybrid working expectations are supported for colleagues with disabilities, in line with our Flexibility Works policy.

• Build elegant, performant, maintainable, operable, and secure Golang microservices.
• Design and architect our systems, contributing to continuous improvement.
• Deliver clean, architecturally sound, maintainable server‑side code; full‑stack experience is a definite plus.
• Collaborate with stakeholders across the business to build, measure, and learn as part of a world‑class product.
• Partner with product and engineering managers to refine build and ship processes, and help the team overcome roadblocks so features land effectively.
• Guide design discussions, balancing flexibility, speed, scalability and performance.
• Champion new technologies, promote strong development practices, and proactively tackle technical debt.

• 5+ years’ experience in backend development.
• In‑depth knowledge of Golang (PHP experience is a plus).
• Experience building microservices, preferably 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.
• Genuine interest in a fast‑paced startup environment, ideally in fintech or payments.
• Experience with event‑driven architectures.
• Experience mentoring or coaching other engineers.
• Experience with real‑time, low‑latency, high‑frequency transaction‑based systems.
• Relevant, transferable experience is also encouraged.

• Generous pension contribution up to 15%
• Annual bonus award (subject to Group performance)
• Share schemes, including free shares
• Benefit options adaptable to lifestyle, e.g., discounted shopping, 30 days’ holiday plus bank holidays
• Wellbeing initiatives and generous parental leave policies

We offer reasonable workplace adjustments for colleagues with disabilities, including flexibility in office attendance, location and working patterns. As a Disability Confident Leader, we guarantee interviews for a fair and proportionate number of applicants who meet the minimum criteria for the role with a disability, long‑term health or neurodivergent condition through the Disability Confident Scheme.