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 strongly preferred

8+ years of progressive corporate tax experience, with a mix of Big 4 public accounting and in-house experience

Strong technical command of U.S. federal and state corporate income tax compliance, including consolidated return rules

Working knowledge of California combined reporting and multi-state apportionment, including separate-filing state exposure and addback rules

Demonstrated experience with ASC 740, tax provisions, deferred tax accounting, and effective tax rate analysis

Hands-on experience with M&A tax — purchase accounting, opening balance sheet, carryforward analysis, and post-merger integration

Experience standing up or significantly rebuilding a tax function; start-up, post-merger integration, or carve-out experience strongly preferred

Comfort with the technical accounting demands of an infrastructure or cloud business — capex-heavy fixed assets, complex revenue arrangements, and leases under ASC 842

Track record of partnering effectively with Accounting, Finance, Legal, FP&A, auditors, and external advisors

Experience with tax provision and compliance tools such as OneSource, Corptax, or similar

Excellent written and verbal communication, with the ability to brief executives and translate tax for non-tax audiences

Bias toward building rather than maintaining; comfort operating in a fast-paced, foundation-building environment with evolving priorities

Particularly strong candidates will bring:

Prior experience at a high-growth AI, cloud, infrastructure, or other capex-intensive technology company

Exposure to GPU financing, vendor financing, or other complex capital structures

Experience supporting a first-year audit or significant compliance remediation

Multi-state intercompany pricing experience across a multi-entity U.S. group

Property tax experience in a capex-heavy environment, including data center, GPU, or equipment-intensive footprints

Benefits and Perks

We offer competitive base salaries and equity with a 25% one year cliff and monthly vesting thereafter. For our international employees, we work with our EOR to pay you in your local currency and provide equitable benefits across the globe.

In the US, we offer:

Medical, dental and vision

Life and AD&D insurance

Flexible paid time off including winter closure

Paid family leave benefits

$500 one time home office stipend

$1,000 annual learning & development stipend

100% Citibike membership (NYC only)

$45/month gym membership

Additional various medical and mental health services

At Lightning AI, we are committed to fostering an inclusive and diverse workplace. We believe that diverse teams drive innovation and create better products. We provide equal employment opportunities to all employees and applicants without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic. We are dedicated to building a culture where everyone can thrive and contribute to their fullest potential.