Tech Lead - Decision Technology

iwoca is a financial technology company that provides finance to small businesses. The Tech Lead - Decision Technology role is responsible for the engineering systems that underpin Credit Risk modelling at iwoca, focusing on the platform, pipelines, and production systems around the models. As a hands-on technical leader, you'll lead four engineers and contribute to the systems that matter most, making pragmatic changes to improve reliability and reduce friction in production.

Requirements

• A background in a highly numerical discipline – mathematics, physics, statistics, or similar – with an interest in ML and modelling, whether from professional experience or independent work.
• A generalist mindset, with the flexibility and confidence to understand broad technical contexts, challenge assumptions, and suggest a better approach.
• Experience leading engineering teams, combining technical leadership, line management, and individual contribution to deliver cross-functional projects.
• Advanced proficiency in Python or another object-oriented language.
• A commitment to using modern tools effectively – including AI – to maximise quality, speed, and rigour, while retaining responsibility for accuracy and outcomes.

Benefits

• 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.