Lead federal, state, and indirect tax reporting and compliance, including tax provisions, returns, audits, planning, R&D tax credits, controls, journal entries, and technical documentation. Partner with internal teams and external advisors on tax initiatives while using AI tools such as Claude and Claude Code to improve research, analysis, calculations, and workflows. The role requires a CPA, corporate tax expertise, strong knowledge of US GAAP, and in-person work four days weekly near San Francisco.