AI Engineer

ABOUT THE ROLE This is a hands-on engineering role at an early-stage, Y Combinator–backed AI productivity startup. You'll tackle two core challenges: building backend systems that scale and optimising the LLM and AI agent flows that power the product. Your work will have a direct and visible impact on platform performance and the end-user experience. WHAT YOU'LL DO - Own backend scalability — design and implement services and infrastructure built to handle growth. - Tune and iterate on LLM integrations and AI agent orchestration pipelines to improve reliability and efficiency in production. - Ship software continuously, maintaining a high ownership mindset in a fast-moving, small team. WHAT WE'RE LOOKING FOR - 5+ years of backend software engineering experience delivering scalable, production-grade systems. - Hands-on experience integrating LLMs and optimising AI agent workflows in live production environments. - A practical, portfolio-driven approach — demonstrable side projects and shipped software are valued over formal credentials alone. - Experience thriving at fast-growing startups; high agency and genuine startup motivation are essential. - Strong sense of ownership, intentional career choices, and a sustained curiosity for the craft. - Based in Stockholm or able to legally work and relocate there — visa sponsorship is not available. COMPENSATION & BENEFITS - Salary range: $80,000–$120,000 USD annually, with flexibility for exceptionally senior candidates. - Equity offered; the salary/equity mix is negotiable. - Visa sponsorship: not available. LOCATION On-site in Stockholm, Sweden.