iwoca seeks a Staff Backend Engineer to lead the technical design and development of our financial data systems, beginning with a new credit card ledger. You will combine deep technical expertise with business context to help launch a credit card product and scale our core financial infrastructure.
What You'll Do
- Lead the technical design and development of iwoca’s financial data systems, starting with a new credit card ledger.
- Scale a new ledger system to process hundreds of thousands of daily transactions with precision and resilience.
- Extend and improve the systems that power real-time payments, ensuring reliability and scalability.
- Build and maintain services that provide Finance, Accounting, and Capital Markets teams with accurate, timely data.
- Guide engineers through complex design decisions, mentor team members, and set technical standards.
What We're Looking For
- Experience designing and building scalable back-end systems for payments or financial ledgers.
- Proficiency in Python, writing clean, efficient, and well-tested code.
- Experience designing data models for payments systems, ensuring accuracy, scalability, and maintainability, ideally using PostgreSQL.
- Experience architecting highly available systems that process 10,000+ transactions per day.
- Experience leading projects end to end, from scoping and design through to production.
- Experience mentoring engineers and setting technical standards.
- Clear, concise written and verbal communication, focusing on outcomes and impact.
- Numerical or technical background, ideally with a degree in maths, physics, computer science, engineering, or a related field.
Nice to Have
- Experience with Django.
- Experience with infrastructure-as-code and CI/CD pipelines.
- Experience with Rust.
Technical Stack
- Python
- PostgreSQL
- Django
- Rust
Team & Environment
You'll join a team of six engineers and work closely with a Tech Lead and Product Manager, using Agile methods.
Benefits & Compensation
- Compensation: £100,000 - £140,000
- Flexible working hours
- Medical insurance from Vitality, including discounted gym membership
- A private GP service 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
- 3% pension contributions on total earnings
- An employee equity incentive scheme
- Generous parental leave and a nursery tax benefit scheme
- Electric car scheme and cycle to work scheme
- Two company retreats a year
- A learning and development budget for everyone
- Company-wide talks with internal and external speakers
- Access to learning platforms like Treehouse
Work Mode
This is a hybrid role, based either in London (UK) or fully Remote within the UK.
iwoca fosters a culture of learning, growth, and support, valuing thought and skill diversity, and encouraging exploration of new areas of interest.
