Internal Tax Manager (US Tax Focus)

Eon is a fast-growing, global cloud-native data protection company. We help organizations protect and manage their data at scale while simplifying complex infrastructure and compliance requirements. Our teams operate globally, including significant operations in the US, and we are looking for an In-House Tax Advisor to join our Finance team and help scale our tax function.

At Eon, we value ownership, technical depth, and people who can take initiative and make an impact across the organization.

We are looking for an experienced In-House Tax Manager with strong expertise in US taxation. This role is responsible for providing hands-on tax guidance across the company, ensuring compliance with US federal and state tax requirements, and supporting strategic business decisions. You will work closely with Finance, Legal, HR, and external advisors to manage risks, optimize tax outcomes, and support growth initiatives.

This is a strategic, hands-on role with direct impact on EON’s operations and long-term success.

• Provide day-to-day tax guidance on US federal and state tax matters

• Support US operations, including entity structuring, payroll, withholding, and sales/use tax compliance

• Advise on commercial contracts, supplier/customer agreements, and cross-border arrangements

• Partner with external US advisors and accounting firms on filings and audits

• Monitor and manage tax compliance and reporting obligations

• Identify and mitigate tax risks across the organization

• Build and improve internal tax processes, policies, and documentation

• Intercompany tax planning and Transfer Pricing matters

• Keep the company updated on regulatory changes and assess their impact

Must Have

• CPA, Attorney, or certified Tax Advisor

• 5+ years of US tax experience, ideally in high-tech or fast-growing global companies

• Strong knowledge of US federal and state taxation

• Experience working with external US advisors and accounting firms

• Excellent written and verbal English skills

• Hands-on, independent, and ownership-driven approach

Nice to Have

• Prior in-house experience at a technology or high-growth company

• Experience with equity plans (RSUs, stock options)

• Exposure to international tax, transfer pricing, or cross-border structuring

• Experience supporting M&A, fundraising, or IPOs

At Eon, you’ll join a global, fast-growing company where you can directly influence our business and compliance processes. This is a chance to build and shape the company’s in-house tax function, work closely with leadership, and contribute to scaling EON globally.