About this role
At Kiwi, we are already running AI in production, not just designing it, but building and shipping it across the product. We’re looking for a Senior AI Software Engineer who is deeply hands-on and comfortable owning features end-to-end: from backend logic and AI integration to frontend experiences. This role is about building fast, iterating in production, and making AI usable for real users. What you’ll do Build end-to-end features powered by LLMs and agents (backend + frontend) Integrate AI into real user-facing flows (voice, chat, product interfaces) Design and implement APIs and services that connect AI systems with the product Work on performance across the stack: frontend responsiveness, backend latency, AI cost/throughput Ship quickly, iterate in production, and continuously improve real user experiences What we’re looking for 5+ years in software development, ideally in full-stack roles Must have hands-on experience applying AI in live product environments, working with systems that are actively used and continuously evolving Strong backend skills (Node.js, TypeScript, etc) and solid frontend experience (React, Next.js, etc) Experience integrating LLM APIs, agents, or automation into real products Ability to own features end-to-end, from idea to production Hands-on experience with PostgreSQL or other relational databases. Comfortable working in fast-moving environments with minimal structure Strong execution mindset, you build, ship, and improve Fluent English communication Preferred: experience in fintech or digital financial products What we offer The opportunity to build AI features used by real users from day one Ownership of end-to-end product development, not just isolated components Real-world challenges across backend, frontend, and AI systems A fast-moving environment where your work quickly reaches production Fully remote (Colombia / Argentina)