iwoca

Senior Back End Engineer- DE Tech

Remote Senior Backend Engineer role with clear candidate location fit.

PostedJun 17, 2026

Eligible countries1 accepted country

Seniority signalSenior

Work settingRemote

Accepted candidate locations

United Kingdom

Role overview

Readable role content extracted into sections for faster review.

Simplify workflows: You’ll decide when and what to automate, translating operational needs into reliable code that reduces manual effort.
Evolve the architecture: You’ll identify ways to modernise our systems, managing trade-offs to keep them dependable as they scale.
Advocate for quality: You’ll be a sounding board for the team, using code reviews and design sessions to advocate for better engineering practices.
Expand your scope: You’ll join a growing team that supports emerging leaders, offering you opportunities to lead projects end-to-end, developing your commercial judgement.

Proven track record in designing and building backend systems using Python, ideally with Django but open to other web frameworks such as FastAPI, Flask, or Ninja.
Experience working with relational databases, ideally PostgreSQL but open to MySQL or similar, with an understanding of performance and maintainability considerations.
Experience working on systems that support complex workflows, where data correctness and clear system behaviour matter.
A track record of taking work from an initial problem through to delivery, including shaping solutions, making trade-offs, and iterating based on how systems are used.
A drive to continually improve existing systems, not just building new ones, including simplifying and addressing long-standing pain points.
You use AI (like Cursor or Claude Code) in your daily flow—whether for work or for fun. You use it to blast through boilerplate and research, so you can focus on the hard parts: complex architecture, rigour, and high-stakes decision-making.

Knowing how to scale systems: Familiarity with working on internal tools or platforms used by large operational teams.
Full-stack flexibility: Contributing to front-end codebases, particularly with React or TypeScript.
Modern deployment experience: Working with CI/CD pipelines or deployment workflows.
A data-driven mindset: Using data or metrics to assess whether changes have had the intended effect.

Offices in London, Leeds, Berlin, and Frankfurt with plenty of drinks and snacks.
Events and community-led groups, including running groups, padel, and monthly ping-pong and pool competitions.

Flexible working hours.
Medical insurance from Vitality, including discounted gym membership.
A private GP service (separate from Vitality) for you, your partner, and your dependents.
25 days’ holiday per year, an extra day off for your birthday, the option to buy or sell an additional five days of annual leave, and unlimited unpaid leave.
A one-month, fully paid sabbatical after four years.
Instant access to external counselling and therapy sessions for team members that need emotional or mental health support.
3% Pension contributions on total earnings.
An employee equity incentive scheme.
Generous parental leave and a nursery tax benefit scheme to help you save money.
Electric car scheme and cycle to work scheme.
Two company retreats a year: we’ve been to France, Italy, Spain, and further afield.