Accounts Payable Specialist

As an early mover in the in-space transportation and infrastructure services, Momentus is at the forefront of the commercialization of space. With an experienced team of aerospace, propulsion, and robotics engineers, Momentus has developed a cost‑effective and energy‑efficient in‑space transport system.

Daring problems require daring solutions. We boldly charge into uncharted territory knowing that no matter the outcome we will benefit from the journey and move closer to our goals. Our teams know that working at Momentus means more than building innovative technology; it means creating entirely new markets in the space economy. We are level‑headed, business‑minded strategic thinkers intent on providing immediate value to our customers today while simultaneously preparing for the vast possibilities of the future.

If this sounds like you, we should talk.

We are seeking a skilled Accounts Payable Specialist to join our accounting team. This role is responsible for managing the full accounts payable cycle, ensuring accurate and timely payments to vendors, and maintaining strong relationships with internal teams and external partners. The ideal candidate should be accustomed to working in a fast‑paced, highly detailed environment, and must be a U.S. citizen or otherwise eligible under U.S. export‑control regulations.

The position is full‑time, hybrid, and based in San Jose, California.

• Process and verify invoices, purchase orders, and expense reports for accuracy and proper authorization.
• Ensure timely payments to vendors while adhering to company policies.
• Reconcile accounts payable ledger to ensure all payments are accounted for and properly posted.
• Research and resolve invoice discrepancies or billing issues with vendors.
• Maintain organized and accurate accounts payable records.
• Assist with month‑end, quarter‑end, and year‑end closing activities.
• Collaborate with internal departments to support accounting and finance initiatives.
• Provide backup support for other finance functions as needed.

• Strong understanding of accounts payable procedures and accounting principles.
• Proficiency in accounting software, preferably Net Suite.
• Advanced Microsoft Excel skills.
• Excellent organizational and time‑management skills.
• Strong communication and problem‑solving abilities.
• Ability to work independently and as part of a team.

• Associate or bachelor’s degree in accounting, finance, or related field preferred.
• 3–5 years of accounts payable or accounting experience.

Annual Base Salary Range: $70,000.00 – $85,000.00 per year. Base pay is one part of our total compensation package (base+bonus+equity) and is determined within a range. Our benefit plans include medical, dental, and vision insurance, 401(k) retirement plan, short‑ and long‑term disability and life insurance. We also offer flexible PTO, 11 paid holidays, sick time, and paid parental leave.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.