Senior Software Engineer

Senior Software Engineer // London hybrid // Fintech // £120,000 🚀 Want to take ownership of greenfield AI projects in a growing fintech? You'll be joining a growing London fintech building data and analytics technology for hedge funds, asset managers and professional credit investors. They've built their reputation around high-quality financial data and are now pushing further into AI, LLMs and agent-based products. With an engineering team of around 14 people, you'll have the chance to work on greenfield technology, influence how new products are built and have a genuine impact without getting lost in a huge engineering organisation. The role You’ll take projects from idea to production, designing the architecture, making technical decisions, writing the code and leading delivery. You'll be working across Node.js, Python and AWS, taking ownership of: Designing architecture and making key technical decisionsBuilding greenfield AI and LLM-powered featuresWriting production code across Node.js and PythonWorking with AWS and Infrastructure as CodeDesigning and developing databases, particularly PostgreSQLTechnically leading other engineers through delivery This isn't a people-management role. You'll stay close to the code while having significant technical and architectural ownership. What they're looking for: Strong Node.js experienceGood hands-on Python experienceStrong AWS knowledgeArchitecture and technical leadership experiencePrevious experience within finance or financial servicesPractical experience building AI/LLM features into productsDatabase experience, ideally PostgreSQLDynamoDB and Elasticsearch are a bonus What's on offer £120,000 base salary2 days per week in central LondonGreenfield AI and agent-based projects25 days holiday + bank holidaysHealth insurance and pensionChoice of high-quality tech kitLearning and development If you want to stay hands-on, solve complex engineering problems and help shape new AI-powered products, this is an opportunity to do it in a growing fintech where your work will have real impact. Click "easy apply" and I'll be in touch.