Senior Accountant - Millennium Space Systems

At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.

At Boeing, we innovate and collaborate to make the world a better place. We're committed to fostering an environment for every teammate that's welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.

Millennium Space System, a part of being Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions have direct impact to global security, like missile warning and Earth observation.

Our team is curious, bold and innovative. We take risks, innovate and explore new techniques and technologies. We influence change because we challenge the status quo and when we watch our satellites launch, we know each one is made by us.

As Senior Accountant, you will be responsible for overseeing key accounting functions, ensuring accurate financial reporting, and supporting strategic decision‑making. The ideal candidate brings strong technical expertise, excellent analytical skills, and the ability to work both independently and collaboratively in a fast‑paced environment.

This position will work closely with Supply Chain, Contracts, Payroll, Program Finance, Accounts Payable, Financial Planning & Analysis, Cost Policy and Boeing Accounting Business Units (ABUs) while reporting directly to the Director of Business Operations who reports to the Chief Financial Officer. This position sits in our El Segundo, CA office.

This position’s internal job title is Accountant. Our team is currently hiring for Level 4.

Key Responsibilities (but not limited to)

• Maintain and oversee the general ledger, ensuring accuracy and adherence to GAAP, CAS, FAR, DFAR
• Support month‑end, Quarter-end, and year‑end close processes to ensure timely and accurate reporting
• Prepare and review monthly/quarterly/annual journal entries
• Perform complex account reconciliations and resolve discrepancies
• Conduct accounting research for unusual or complex transactions
• Support the capital assets / fixed assets revamp initiative and take ownership of the new capital asset processes and procedures. Collaborate with property management to locate existing assets and minimize potential write-offs
• Provide support for ad-hoc requests and broaden company initiatives as needed
• Assist with and stabilize the remaining payroll responsibilities, including troubleshooting ETS data issues
• Review account activity and balances proactively and on a regular basis to prevent last‑minute corrections
• Analyze financial data to identify trends, variances, and opportunities for improvement Prepare capital assets / fixed assets, monthly, quarterly and yearly schedules for corporate reporting
• Prepare monthly rent accruals and incoming sublease rent invoice
• Maintain Contract Liabilities schedule and prepare monthly journal entries to liquidate the balance by revenue earned on the program
• Analyze and reconcile Unbilled and Contract Liability ending balance by program
• Research transactions and create reports to present to management for correction of cost reclassification, transfer, and other special projects
• Cross train with other team members to provide support during vacations
• Support internal and external audits and Incurred Cost Submission to DCAA
• Process improvements to automate manual processes and facilitate quicker analysis

Basic Qualifications

• Bachelor’s degree or higher in accounting
• Minimum 7 years of progressive experience with Finance and Accounting Systems and Processes
• Deltek Costpoint or similar ERP system experience
• Intermediate Skills using Microsoft Excel
• This position requires the ability to obtain a US Security Clearance for which the US Government requires US citizenship. A final U.S. clearance Post Start is required

Preferred Qualifications

• Experience in aerospace and defense or other government contractors desired
• Ability to prioritize and multi-task and to manage time effectively
• Strong analytical, organizational and communication skills
• CPA License

Conflict of Interest

Successful candidates for this job must satisfy the Company’s Conflict of Interest (COI) assessment process.

Drug Free Workplace

Millennium Space Systems, a Boeing Company, is a Drug Free Workplace (DFW) where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies.

Total Rewards

At Millennium Space Systems, a Boeing Company, we strive to deliver a Total Rewards package that will attract, engage and retain the top talent. Elements of the Total Rewards package include competitive base pay and variable compensation opportunities.

Millennium Space Systems also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.

The specific programs and options available to any given employee may vary depending on eligibility factors such as geographic location, date of hire, and

the applicability of collective bargaining agreements.

Pay is based upon candidate experience and qualifications, as well as market and business considerations.

Summary pay range: Level 4: $112,200 - $165,000

Millennium is DDTC-registered, ITAR-compliant Company. This position is located at a facility that requires special access. Applicants MUST be U.S. citizens and eligible for a security clearance. Additionally, applicants must be willing to apply for and maintain a security clearance. We encourage all interested candidates to apply for any open position for which they feel they are qualified.

Applications for this position will be accepted until Aug. 07, 2026

Export Control Requirements

This position must meet U.S. export control compliance requirements. To meet U.S. export control compliance requirements, a “U.S. Person” as defined by 22 C.F.R. §120.62 is required. “U.S. Person” includes U.S. Citizen, U.S. National, lawful permanent resident, refugee, or asylee.

Export Control Details

US based job, US Person required

Relocation

Relocation assistance is not a negotiable benefit for this position.

Security Clearance

This position requires the ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. An interim and/or final U.S. Secret Clearance Post-Start is required.

Visa Sponsorship

Employer will not sponsor applicants for employment visa status.

Shift

This position is for 1st shift

Equal Opportunity Employer

Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.