Lead Software Engineer

Thirdfort Limited is on a mission to protect society from fraud and money laundering, having already safeguarded over 3 million people. They are seeking a Lead Software Engineer to provide strong technical leadership within product teams, guiding design decisions, mentoring engineers, and ensuring high standards of code quality and operational excellence.

Responsibilities:

• Provide technical leadership within your team and domain, guiding design decisions and architectural direction
• Design, build and deliver complex features and systems that are secure, scalable and maintainable
• Own technical outcomes end-to-end, from discovery and design through to delivery and long-term operation
• Mentor and coach engineers across the team, supporting their technical growth and confidence
• Set a high bar for code quality, testing, observability and operational excellence
• Collaborate closely with Product and Design to shape solutions, challenge assumptions and manage trade-offs
• Lead technical discussions, reviews and incident investigations, helping the team learn and improve
• Contribute to wider engineering initiatives and influence standards across the technology organisation

Requirements:

• significant experience building and operating production software in a modern engineering environment
• led technical design and delivery for complex systems or domains
• comfortable working across backend and/or frontend systems (for example Go, TypeScript, JavaScript, Python)
• strong knowledge of APIs, data modelling, testing strategies and system design
• enjoy mentoring other engineers and leading through influence rather than authority
• can communicate complex technical ideas clearly to both technical and non-technical stakeholders
• comfortable working in a fast-moving, regulated environment where quality and trust are critical