Sr. Accountant

Keystone is a premier economics, technology, and strategy consulting firm built to help companies lead through transformation. As breakthrough innovations reshape industries, redefine competition and change our society, complex and highly competitive ecosystems emerge. Keystone advises technology leaders, Fortune 100 companies, their legal counsel, and governments on business, economic, litigation, and regulatory strategy in relation to these innovations and competitive eco-systems. We operate globally from offices in New York, Boston, San Francisco, Seattle, London, Dubai, and Washington, D.C.

We’re growing quickly and looking for an exceptional Sr. Accountant with a strong technical accounting foundation and the ability to operate with precision, ownership, and intellectual rigor. This role is designed for someone who takes pride in getting complex accounting right—someone who can navigate US GAAP and IFRS confidently, think critically about accounting treatment, and stand behind their conclusions.

We’re looking for a high-caliber Senior Accountant who thrives in complexity and takes ownership of getting the details right. This role sits at the core of our finance function, owning critical close processes while applying deep technical accounting judgment across areas like revenue, leases, stock-based compensation, and consolidation. You’ll operate in a fast-paced, multi-entity environment, partnering cross-functionally and engaging directly with auditors and advisors. Success in this role requires intellectual rigor, precision, and a bias toward continuous improvement—someone who not only executes at a high level, but actively strengthens the systems and processes around them.

• Own key components of the month-end, quarter-end, and year-end close
• Prepare technically sound journal entries
• Deliver reconciliations that fully tie out and withstand audit scrutiny
• Investigate and resolve issues thoroughly

• Apply US GAAP across revenue, leases, sub-leases, accruals, loan accounting, and stock-based compensation, consolidation accounting, purchase price accounting.
• Support IFRS and international accounting requirements
• Evaluate accounting treatments and document positions

• Perform detailed analytical reviews and explain movements
• Partner with FP&A and own your numbers end-to-end

• Support multi-entity, multi-currency environments
• Partner with HR, Legal, Tax, and FP&A
• Coordinate with auditors and advisors

• Identify and fix inefficiencies and control gaps
• Utilize AI tools (e.g., Anthropic Claude)

• CPA
• 4–7 years’ experience, including Big 4
• Strong US GAAP expertise
• Working knowledge of IFRS

• Corporate Tax experience

• Exceptional attention to detail
• Strong technical accounting depth
• Pride in quality and ownership of work
• Strong problem-solving mindset
• Very strong on technology
• High standards and intellectual curiosity