Principal Software Engineer, Tooling (Product)

About the Company Gemini is a global crypto and Web3 platform founded by Cameron and Tyler Winklevoss in 2014, offering a wide range of simple, reliable, and secure crypto products and services to individuals and institutions in over 70 countries. Our mission is to unlock the next era of financial, creative, and personal freedom by providing trusted access to the decentralized future. We envision a world where crypto reshapes the global financial system, internet, and money to create greater choice, independence, and opportunity for all — bridging traditional finance with the emerging cryptoeconomy in a way that is more open, fair, and secure. As a publicly traded company, Gemini is poised to accelerate this vision with greater scale, reach, and impact. The Department: Tooling The Role: Principal Software Engineer (Product) As a Principal Product Engineer, you'll set technical direction for the customer-facing platform that defines how millions of users experience Gemini — onboarding, compliance, customer support, and the systems that hold the customer journey together. This is a role for an engineer who operates at the level of the technology itself: someone accountable for company-level initiatives, who drives the hardest technical challenges across organizational boundaries, and who creates the architectural vision that other teams build against.  You'll work across backend, web, and mobile, but your leverage comes less from what you build directly than from the direction you set, the leaders you grow, and the frontier you push. We treat AI-assisted development and automation as first-class — an agentic SDLC pipeline where agents plan, implement, and review work through our harness under human gates. As a Principal, you're expected to shape where that frontier goes, define the patterns and operational guidelines other engineers adopt, and advance how the whole organization builds. If you're energized by owning ambiguous, company-critical technical bets and multiplying the engineers around you, we'd love to talk. This role is required to be in person twice a week at our New York City, NY office. Responsibilities: Own the technical vision and architecture for the customer-facing platform, designing for scale and reliability with a multi-year horizon and anticipating needs before they arrive. Review critical designs across organizations and drive the designs for projects involving the hardest technical challenges at the company; act as a key driver of demos and technical direction beyond your own team.  Be accountable for one or more core company initiatives spanning onboarding, compliance (KYC/identity), and customer support — carrying them from ambiguity through production and long-term operation.  Identify strategic direction in technology and product, proposing and adopting architecture and platform approaches that advance it; tie technical bets clearly to company objectives.  Plan and deliver large, complex, cross-org programs with interdependencies across teams and systems, spanning months to years; identify the problems worth solving and advocate for their prioritization.  Define patterns, operational guidelines, and engineering practices for your vertical(s), and extend process im