Tax Manager

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At Cesium Astro
, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross‑functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands‑on, interactive, and autonomous work, Cesium Astro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward‑thinking individuals to join our team.

We are looking to add a Tax Manager to our team. If you enjoy working in a startup environment and are passionate about making an impact in a growing company, we would like to hear from you.

The Tax Manager is responsible for leading Cesium Astro’s tax compliance, tax accounting and reporting, and for working closely with external advisors to support tax planning and international tax compliance within a highly regulated aerospace and defense environment. This role will have significant exposure to federal, state, local, and international tax matters, including transfer pricing partnering closely with Finance, Accounting, Legal, and Program management teams.

• Manage federal, state, local, and international income tax compliance including filings, extensions, and payments.
• Oversee indirect taxes, including sales/use, property, and excise taxes.
• Prepare and review income tax provision calculations and related disclosures in accordance with GAAP.
• Maintain accurate and complete tax documentation to support internal reviews, audits, and regulatory inquiries.
• Manage income tax accounting and reporting under ASC 740, including tax provisions, deferred tax calculations and reconciliations, and effective tax rate (ETR) analysis and forecasting.
• Prepare and review tax disclosures for Form 10‑Q and Form 10‑K.
• Partner with Accounting teams to ensure accurate tax impacts in financial reporting.
• Support SoX compliance related to tax processes, controls, and documentation.
• Work with external advisors to support the development and implementation of tax strategies & planning opportunities, including R&D tax credits, accounting method changes, entity structuring, expansions, credits and incentives.
• Partner with external advisors on transfer pricing studies and international tax planning as applicable.
• Partner with Finance, Accounting, Legal, and Program Management to support accurate financial reporting and contract execution.
• Coordinate and manage relationships with external tax advisors, auditors, and government agencies.
• Provide guidance and education to internal stakeholders on tax‑related matters.

• Bachelor’s degree in Accounting, Finance, or related field.
• Minimum of 7‑9 years of progressive tax experience in public accounting (Big 4 or similar) and/or in‑house tax experience at a multinational company preferably in aerospace, defense, or regulated manufacturing, including 2–5 years in leadership/management experience.
• Experience working with enterprise ERP systems (e.g., Net Suite, Oracle, SAP, or equivalent).
• Exposure to tax compliance and provision software (e.g., One Source, Corp Tax, or similar tools).
• Ability to work with financial reporting and data analysis tools.

• CPA, MST, or equivalent advanced certification.
• Familiarity with Federal Acquisition Regulation (FAR), Cost Accounting Standards (CAS), and government contracting…