Senior Software Engineer

Senior Backend Software Engineer | AI ProductsLocation: London (Hybrid)Defining how AI and finance work together, securely, intelligently, and at scale.We're partnered with a fast-growing AI company building a highly secure Generative AI platform for the financial services sector. By combining LLMs, agentic AI and intelligent automation, they're helping some of the world's leading financial institutions unlock efficiency, improve decision-making and reduce risk.As they continue to scale, they're looking for a Senior Backend Software Engineer to help build and evolve the backend systems that power their AI platform.You'll work on scalable APIs, distributed systems, asynchronous workflows and real-time services, helping to deliver production-grade AI capabilities into enterprise environments. This is a hands-on engineering role where you'll work closely with product and engineering teams, influence technical direction and contribute to building software used by global financial organisations.What you'll be doingBuilding and scaling backend services using TypeScript, Node.js and NestJSDesigning and maintaining APIs, data models and distributed systemsWorking with PostgreSQL and multi-tenant SaaS architecturesBuilding event-driven workflows and asynchronous processing pipelinesSupporting AI-powered product capabilities and backend integrationsContributing to system design, architecture decisions and engineering best practicesMentoring engineers and helping drive a strong engineering cultureWhat we're looking forStrong commercial experience with TypeScript and Node.jsExperience working with NestJS or similar backend frameworksStrong backend engineering and system design skillsExperience building production SaaS platformsStrong PostgreSQL and database design knowledgeExposure to distributed systems, event-driven architectures or messaging technologiesInterest or experience working with AI, LLM-powered products or modern AI platformsWhy join?💪 Join a market-leading business operating at the forefront of Generative AI🚀 Work on innovative products helping leading financial institutions operationalise AI at scale🧠 High levels of ownership and autonomy, with a focus on outcomes and clean engineering🔄 Continuous learning environment where experimentation and curiosity are encouraged🌿 Collaborative, transparent culture with flat structures and a people-first approach💻 Hybrid working – London office