Senior Software Engineer

🚀 Senior Full Stack Engineer | London (Hybrid)We’re working with a high-growth, AI-first fintech that’s quietly building something pretty special and now looking to add a Senior Full Stack Engineer to their team.This isn’t your typical “we use AI” environment. Engineering here is genuinely LLM-first. Think day-to-day development powered by tools like Claude Code and Codex, with engineers actively shaping how AI integrates into real production workflows.💻 What you’ll be doing• Owning features end to end across a modern full stack environment• Building and scaling payments infrastructure across multiple markets• Working closely with product and data to solve complex, real-world problems• Playing a key role in evolving how the team leverages AI in software development• Mentoring and raising the bar across engineering🧠 Tech environment• TypeScript at the core, alongside Python and Ruby• Modern backend frameworks and distributed systems• Cloud-native infrastructure (AWS, Kubernetes)• Strong focus on observability, reliability and clean architecture👀 What they’re looking for• Strong experience as a Full Stack or Backend leaning engineer• Confidence working with TypeScript (or similar high-level languages)• Curiosity and enthusiasm for AI-assisted development• People who ask great questions and enjoy solving meaningful problems🌍 Why it’s interesting• AI isn’t a side project here, it’s central to how the team operates• Real ownership and impact from day one• Mission-led product• Hybrid working, 3 days per week in a central London officeSalary - Up to £130kIf you’re someone who’s curious about where software engineering is heading, and want to be in a team actually pushing that forward, this is worth a conversation.