The Product Engineer will build user-facing tools and web applications, collaborating with research and engineering teams to deliver high-quality developer experiences. Responsibilities include product iteration, API integration, and ensuring performance and reliability.

Lead Cosine's public sector GTM: build multi-threaded senior relationships across government, defence-adjacent bodies and public agencies; translate sector insight into qualified pipeline, pilots and bids; manage SI/partner engagement; create procurement-aware playbooks; and hire and scale a repeatable public sector GTM motion.

Lead Cosine's financial services GTM: build and deepen executive relationships across banks, insurers, payments and infrastructure; run structured discovery to capture sovereign AI priorities; convert relationships into qualified pipeline, pilots, and proposals; design FS-focused events; and create the repeatable GTM playbook and early team for the vertical.