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Lead scaling and efficiency programs for Anthropic's API stack across API, infrastructure, databases, networking, and inference. Run multiple large cross-team programs, own cross-org dependencies end-to-end, establish decision-making clarity, surface risks and trade-offs to engineering leadership, and ensure programs deliver scalable, cost-effective API platform improvements.

Partner with regional leaders to deliver full-cycle HR support across Tokyo/APAC: advise on employee relations, performance management, compliance, policies, immigration, and scalable people programs in partnership with specialist teams.

Design, run, and interpret large-scale reinforcement-learning experiments; build benchmarks for long-horizon RL; diagnose scale-dependent failures; and translate validated findings into production training recipes while collaborating with research and engineering teams.

The Support Engineer provides technical support to enterprise customers, resolving complex issues and collaborating with internal teams to enhance product support. Responsibilities include account management, issue troubleshooting, and building customer relationships.

Own end-to-end accounting for Anthropic's infrastructure capex and fixed asset portfolio, including CIP tracking, reconciliations, monthly close, ASC 360 technical accounting, auditor liaison, cross-functional partnership, process automation, and mentoring junior accountants.

Build and maintain Anthropic's Claude desktop applications (macOS and Windows), combining web technologies (TypeScript, React, Electron) with native code (Rust, Swift, C++). Optimize performance, implement update and deployment pipelines, create monitoring tools, and integrate LLM-driven features into polished user experiences across platforms.

Lead and scale Anthropic's strategic relationships with top global systems integrators. Set multi-year joint strategies, negotiate multi-year agreements, co-develop solutions, drive global co-sell and delivery readiness, build certification programs to train 50,000+ practitioners, chair alliance governance, and orchestrate cross-functional teams to grow a $1B+ Claude practice and measurable ARR influence through partners.

Prototype and evaluate frontier model capabilities for cybersecurity tasks; design datasets, harnesses, and scoring; engage with security community; and partner with engineers to productize reliable AI security features.

Lead APAC direct tax compliance and advisory across multiple jurisdictions. Manage transfer pricing, withholding tax, permanent establishment, entity structuring, infrastructure tax issues, and tax audits. Partner with Finance, Legal, People, and indirect tax teams, work with external advisors, contribute to SOX/public company readiness and tax technology implementations, and build regional tax processes and relationships with local authorities.

Convert demand forecasts into per-tranche requirements, qualify deliverability pre-signature, run and track parallel bring-ups across clouds and sites, own the contract-to-occupied lifecycle, automate readiness, and publish executive reporting on timing, utilization, and paid-idle metrics.