Senior Software Engineer responsible for banking services at AngelList, managing foundational systems for startups. Collaborating with teams to integrate financial infrastructure efficiently.
About the role
- Experienced Product Engineer (AI-focused) developing user-facing features for innovative AI education platform. Collaborating with design and product teams while optimizing AI systems for real user impact.
Responsibilities
- Design and ship AI-driven user-facing features in our TypeScript stack
- Take ownership of AI features from idea through to production and iteration
- Collaborate closely with design and product to solve real learning problems with end to end AI solutions
- Write clean, maintainable, production-ready code
- Contribute to architectural decisions across backend and AI systems
- Improve the user experience around AI outputs, including feedback loops and refinement flows
- Optimise production AI pipelines
- Design and iterate on prompts, including agentic prompt engineering and multi-step workflows
- Build structured model pipelines rather than simple single-call integrations
- Integrate model improvements directly into our TypeScript backend
- Create novel AI-powered systems to solve new product challenges
- Prototype and productionise new model-driven capabilities
- Define what great looks like across different AI use cases
- Design internal evaluation frameworks
- Develop clear metrics for quality, correctness and usefulness
- Evaluate multi-step and agentic workflows for robustness
- Run structured experiments to drive systematic improvement
- Build internal tooling to support iteration and experimentation
- Monitor model behaviour and system health
- Handle API rate limits and third-party outages
- Improve resilience, retries and fallback logic
- Design robust model-calling infrastructure
- Ensure AI features remain stable and performant under scale
Requirements
- 8+ years of software engineering experience
- Strong expertise in TypeScript is preferred; however, we would also consider candidates with strong JavaScript experience.
- Degree in Machine Learning, Artificial Intelligence, or a related quantitative discipline; alternatively, demonstrable hands-on experience evaluating AI models and prompts in a production environment.
- Experience building and maintaining production systems
- Experience shipping user-facing product features
- Experience designing structured or agentic prompt workflows
- Ability to define and implement evaluation metrics for AI-driven features
- Clear communicator who can collaborate with technical and non-technical stakeholders
- Strong product instincts and a focus on impact
- **Nice to Have**
- Previous start-up or founder experience
- Experience building internal tooling for experimentation and evaluation
Benefits
- Highly competitive salary
- You'll own a piece of what you're building - equity included
- Hybrid and flexible working model with 4 days in our Shoreditch, London office
- Private health insurance
- Enhanced parental leave
- The opportunity to become one of the earliest employees in one of the UK’s fastest-growing startups
Job title
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Experience level
Salary
Not specified
Degree requirement
Tech skills
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