Global Tax Lead

Who We Are Lightning AI is the company behind PyTorch Lightning. Founded in 2019, we build an end-to-end platform for developing, training, and deploying AI systems—designed to take ideas from research to production with less friction. Through our merger with Voltage Park, a neocloud and AI Factory, Lightning AI combines developer-first software with cost-efficient, large-scale compute. Teams get the tools they need for experimentation, training, and production inference, with security, observability, and control built in. We serve solo researchers, startups, and large enterprises. Lightning AI operates globally with offices in New York City, San Francisco, Seattle, and London, and is backed by Coatue, Index Ventures, Bain Capital Ventures, and Firstminute. Our Values Move Fast : We act with speed and precision, breaking down big challenges into achievable steps. Focus : We complete one goal at a time with care, collaborating as a team to deliver features with precision. Balance : Sustained performance comes from rest and recovery. We ensure a healthy work-life balance to keep you at your best. Craftsmanship : Innovation through excellence. Every detail matters, and we take pride in mastering our craft. Minimal : Simplicity drives our innovation. We eliminate complexity through discipline and focus on what truly matters. WHAT WE’RE LOOKING FOR We are looking for a Global Tax Lead to own and scale Lightning’s corporate tax compliance function as the company grows. You will be responsible for managing income tax compliance, tax accounting support, forecasting, risk mitigation, and tax process improvements across the business. This role will partner closely with Finance, Accounting, FP&A, Legal, and external advisors to ensure accurate filings, strong controls, and scalable tax operations. This is a high-impact role for someone who combines deep technical tax expertise with an operational mindset. You will help build the systems, processes, documentation, and controls needed to support a fast-growing AI infrastructure company operating in a complex and evolving tax environment. The tax scope is broad, leadership visibility is high, and the work directly supports financial accuracy, compliance, risk management, and long-term business scalability. This is a hybrid role based in either New York City or San Francisco with in-office requirements of 2 days per week. The salary range for this role is $185,000–$200,000 . WHAT YOU'LL DO Build and own the tax function Stand up Lightning AI's corporate tax function across the multi-entity consolidated group Establish tax policies, documentation, controls, and procedures from the ground up to support internal governance and audit readiness Develop the multi-year tax operating roadmap, including process design, automation priorities, and the consultant-to-FTE transition plan Compliance across federal, state, and local Lead U.S. federal and state corporate income tax compliance, including the first consolidated federal return Manage California mandatory combined reporting and multi-state nexus exposure across the group, including separate-filing and addback jurisdictions Oversee indirect tax compliance — sales and use, gross receipts — given the company's multi-jurisdictional data center and customer footprint Oversee property tax compliance across the company's data center and equipment footprint, including assessment review, return preparation, appeals, and exemption or abatement opportunities tied to GPU and infrastructure investments Tax accounting and audit support Own quarterly and annual income tax provision work under U.S. GAAP and ASC 740, including effective tax rate analyses, deferred tax positions, and uncertain tax position documentation Partner with the external auditors and the Corporate Accounting team to deliver tax workstreams supporting the first-year audit Build tax forecasts and reporting cadences that support Finance, FP&A, and leadership decision-making M&A and strategic transactions Support technical accounting workstreams for recent acquisitions, including ASC 805 purchase accounting tax implications, opening balance sheet tax positions, and carryforward analysis Lead the tax workstream on future M&A, financing, and restructuring transactions Partner with Strategic Finance and Corporate Development on Deal Desk diligence and structuring Cross-functional partnership and risk management Identify, assess, and mitigate corporate tax risks, and monitor evolving tax laws and reporting requirements, including the changing landscape for AI infrastructure businesses Manage relationships with external tax advisors, auditors, and other third-party partners Communicate complex tax matters clearly to non-tax stakeholders across Finance, Accounting, FP&A, Legal, and Engineering WHAT YOU'LL NEED Bachelor's degree in Accounting, Finance, or a related field; CPA or MST st