Senior Accounts Payable Analyst

About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait. What You Will Do You will own Helion’s end-to-end accounts payable process, ensuring accurate, timely payments and strong financial controls as we scale. As a Senior Accounts Payable Analyst, you will partner across Finance, Supply Chain, and the business to resolve issues, support month-end close, and improve accounts payable processes and systems. This is an onsite role at our Seattle, WA office, reporting to the Accounts Payable Manager. You Will: Process invoices from intake and approval through posting and record retention, ensuring accurate coding, complete documentation, and compliance with company policies and internal controls Perform two- and three-way matching, resolving price, quantity, tax, and receipt discrepancies before posting Partner with General Ledger, Supply Chain, Receiving, Procurement, and business requestors to resolve invoice exceptions, payment holds, and account discrepancies Execute timely ACH, wire, and card payments in accordance with regulatory requirements and approval, segregation-of-duties, bank-change verification, and fraud-prevention controls Maintain and periodically review vendor records, including onboarding documentation, tax forms, and banking details; reconcile vendor statements and respond promptly to vendor and internal inquiries Support month-end close by reviewing open invoices and unmatched receipts, reconciling accounts payable activity, resolving aging items, and assisting with accruals Contribute to process improvements, system testing, audits, and other finance projects to support a growing business Required Skills: 5+ years of end-to-end accounts payable experience, including work in a high-growth, technology-driven environment Proficiency with Tipalti, Ramp, or comparable accounts payable platforms Experience with two- and three-way invoice matching and the ability to accurately process at least 200 invoices per week Strong attention to detail, organization, and time management, with the ability to learn quickly, prioritize competing needs, and meet deadlines Strong problem-solving and customer service skills, with the ability to communicate clearly with vendors and internal stakeholders in writing, verbally, and through presentations Availability to work extended hours or weekends, as needed, to meet critical accounts payable deadlines #LI-Onsite #LI-MM1 Benefits Our total compensation package includes benefits, including but not limited to: Medical, Dental, and Vision plans for employees and their families 31 Days of PTO (21 vacation days and 10 sick days) 10 Paid holidays, plus company-wide winter break Up to 5% employer 401(k) match Short term disability, long term disability, and life insurance Paid parental leave and support (up to 16 weeks) Annual wellness stipend Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.