Gizmo

Full-stack Engineer

• 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

Staff Product Engineer, AI Focus