Senior Software Engineer

🔒 Confidential Employer
Posted 7 May 2026
LOCATION
London
TYPE
Full-time
LEVEL
Mid-Senior level
CATEGORY
Software Engineering
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion

SKILLS

TypeScript Python Ruby FastAPI PostgreSQL AWS Kubernetes Claude Code

FULL DESCRIPTION

Senior Software Engineer at [Employer hidden — sign up to reveal]

London (Hybrid)

[Employer hidden — sign up to reveal] is hiring a Senior Software Engineer (Full Stack) to join their Payments squad. You will design, implement, and deliver software features with full ownership, collaborate in a close multi-disciplinary team, mentor other engineers, and use LLM tools like Claude Code. The tech stack includes TypeScript, Python, Ruby, FastAPI, PostgreSQL, AWS, and Kubernetes. Hybrid working: 2 days per week in London office near Liverpool Street.

About [Employer hidden — sign up to reveal]

At [Employer hidden — sign up to reveal], we believe in a different way to deal with debt. One that puts empathy and understanding front and centre. We are building an AI-native collections platform that helps individuals clear debts while providing businesses with improved customer experience. Since 2021, we've worked with Octopus, Scottish Power, and Philips. In 2023, we were acquired by Intrum, Europe's biggest credit management service, and are expanding into 17 European markets.

Role & Responsibilities

  • Design, implement and deliver software features with full ownership from start to finish.
  • Collaborate as part of a close & multi-disciplinary team. Your work will have meaningful and measurable impact.
  • Own business-critical components and ensure their stability and maintainability.
  • Mentor other members of the team to ensure technical excellence.
  • Share ideas and build products that make an impactful difference to society and people’s lives.

Tech Stack & Tools

[Employer hidden — sign up to reveal] Tech is an AI-first organisation. Key tools include Claude Code, Codex, and OpenSpec. The stack runs TypeScript, Python, and Ruby. Web framework: FastAPI. Database: PostgreSQL (via PlanetScale). Data lakehouse: Databricks. Workflow: Temporal. Monitoring: Datadog. Infrastructure: AWS & Kubernetes. Legacy: Ruby on Rails. Financial ledger: TigerBeetle.

About You

  • At least 5 years of experience in Full Stack Engineering.
  • Experience with TypeScript (or Python, Ruby or similar).
  • Enthusiasm for learning new technologies and experimenting.
  • Experience and enthusiasm for using LLM tools – Claude Code, Cursor, Codex.
  • Attention to detail, intellectual curiosity, willingness to embrace change.
  • Understanding of web programming & familiarity with web frameworks (FastAPI, Ruby on Rails).
  • Excitement about [Employer hidden — sign up to reveal]’ mission to break the debt cycle.

Our Values

  • Customers and Clients first
  • Dream big
  • Get it done
  • Win as one

[Employer hidden — sign up to reveal] is an equal opportunity employer. We value diversity and recruit based on talent and merit.

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