Senior Software Engineer

Location: London (4 days on site)

We’re looking for a Senior Software Engineer to play a key role in designing, building, and maintaining critical parts of a modern, user-facing platform. This is a hands-on role where you’ll help shape technical direction, mentor other engineers, and ensure systems are robust, scalable, and easy to maintain.

You’ll work closely with product, design, and other cross-functional teams to deliver high-quality solutions that make a real impact, while contributing to a strong culture of engineering excellence.

What You’ll Be Doing

• Lead the design and development of complex systems and business-critical features
• Drive projects involving multiple contributors, ensuring strong technical alignment and high-quality delivery
• Set engineering standards through code reviews, documentation, and process improvements
• Take ownership of production systems, proactively monitoring, debugging, and resolving issues
• Design for resilience, scalability, and observability
• Act as a trusted technical advisor, translating business needs into effective technical solutions
• Mentor and support other engineers, sharing knowledge and modelling strong decision-making
• Contribute to team strategy, planning, and long-term technical direction
• Participate in (and occasionally lead) in-person daily stand-ups
• Influence engineering practices and culture beyond your immediate team

Essential Skills & Experience

• Strong proficiency in TypeScript
• Experience building production systems using React, React Native, Node.js, or similar frameworks
• Solid understanding of system design, scalable architecture, and full-stack development
• Experience with platforms and tools such as AWS, Expo, Vercel, or Camunda
• Ability to write clean, maintainable, well-tested code and conduct thorough code reviews
• Comfortable owning production systems and handling incidents
• Confident leading technical discussions, evaluating trade-offs, and aligning stakeholders

Nice to Have

• Experience in a high-growth or scaling environment
• Background in healthcare, fintech, or other regulated industries
• Familiarity with domain modelling, event-driven systems, or workflow automation