Founding Engineer at Blackbird-backed AI-native fintech startup

As the Founding Engineer, you will establish the foundational software architecture for an AI-native system of record replacing legacy 1990s software. You’ll own the entire codebase, building end-to-end features across web and mobile platforms. This high-impact role shifts financial advisers from manual tasks to AI-powered reviewers, directly influencing the product roadmap.

• Architect and build core product features end-to-end using React Native, .NET Core, and Supabase, with a heavy emphasis on AI-native workflows.
• Develop rich AI-powered interfaces including chat, tool-calling flows, and real-time streaming responses using LLMs like Anthropic and OpenAI.
• Manage the full mobile and web lifecycle, from building native audio recording modules to owning the CI/CD pipeline and release deployments.

• Exceptional full-stack or backend coding talent with a proven track record of shipping production-ready applications in fast-paced startup environments.
• Power user of modern AI development tools for architecting and debugging, with a deep curiosity for optimizing LLM performance and UX.
• Detail-oriented builder who thrives in ambiguity, prioritizes in-person collaboration in London, and possesses the business acumen to translate user needs into code.

• Join a pre-seed powerhouse with $2.7M raised from Blackbird (the largest investor in Canva) and experience explosive 45% month-over-month adoption.
• Unparalleled architectural freedom and influence as a founding team member, working directly with founders to shape the engineering culture and technical vision.
• Dual growth pathways allowing you to choose between a Principal Engineer or Engineering Leadership track with direct mentorship from experienced operators.