Senior Software Engineer

Senior Engineer/Tech Lead - AI-first engineering Remote first (once a fortnight in London- can be more flexible if required) | Up to £120k + Bonus + Equity We're working with a fast-growing, technology-led financial services business that is investing heavily in AI, product development and modern engineering. They're looking for a hands-on Technical Lead to join their engineering team and help shape the technical direction of the platform while continuing to build software yourself. This is a role for someone who enjoys solving complex problems, getting stuck into the code and having genuine influence over what gets built. What You'll Do

• Design, build and ship customer-facing applications, APIs and internal platforms.
• Remain hands-on with coding, testing, architecture and code reviews.
• Build AI-enabled products using LLMs, RAG, agents and model APIs.
• Take AI ideas from rapid prototypes through to reliable production systems.
• Work across Python, React/TypeScript, Django, FastAPI, PostgreSQL and AWS.
• Improve architecture, engineering standards and delivery practices.
• Work closely with product, business and engineering stakeholders to solve complex problems.
• Mentor and support engineers through pairing, reviews and technical guidance.
• Make pragmatic decisions around scalability, security, reliability and maintainability. Technology Python | React | TypeScript | Django | FastAPI | PostgreSQL | AWS | Docker | REST APIs | CI/CD | Git AI experience across LLMs, RAG, agentic workflows, embeddings, prompt design or model evaluation is particularly valuable. What They're Looking For
• 5–10 years' commercial software engineering experience.
• Strong, recent hands-on

Python development.

• Strong full-stack capability, ideally including React/TypeScript.
• Experience building and operating production systems in AWS.
• Solid understanding of software architecture and distributed systems.
• Practical experience building with AI/LLMs rather than purely theoretical knowledge.
• Experience taking ownership of complex technical problems.
• Ability to influence technical direction without needing formal authority.
• Clear communication and a calm, pragmatic approach. Financial services or FinTech experience is useful but not essential. Why Join? This is a chance to join at a point where AI is becoming a core part of the product strategy, giving you the opportunity to work on technology with a tangible customer impact. You'll have significant technical ownership, plenty of hands-on engineering, exposure to senior stakeholders and a clear route towards Principal Engineering, Architecture or wider technical leadership. The environment is collaborative, ambitious and flexible, with plenty of scope to influence how the technology evolves. Package
• Up to £120,000
• Annual performance bonus
• Equity / growth shares
• 30 days' holiday + bank holidays If you're a Senior Engineer, Staff Engineer or Technical Lead who wants to stay hands-on while taking greater ownership of architecture and AI-enabled products, this could be a strong next step.