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Senior AP Analyst

Helion - Seattle, WA, United States - In-office - posted 2026-09-21

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Helion is a fusion power company based in Everett, WA, on a mission to build the world's first fusion power plant and enable unlimited clean electricity. Founded in 2013, Helion has raised $1.5 billion from investors including Sam Altman, Mithril, Capricorn Investment Group, Thrive Capital, Lightspeed Venture Capital, and SoftBank. The company's prototype, Polaris, has achieved record-breaking plasma temperatures of 150 million degrees Celsius, and Helion is advancing toward its commercial power plant, Orion. As Senior Accounts Payable Analyst, you will own Helion's end-to-end accounts payable process, ensuring accurate, timely payments and strong financial controls as the company scales. You will report to the Accounts Payable Manager and work onsite at the Seattle office. Key responsibilities include: - Processing invoices from intake through approval, posting, and record retention with accurate coding, complete documentation, and compliance with company policies and internal controls - Performing two- and three-way matching to resolve price, quantity, tax, and receipt discrepancies before posting - Partnering with General Ledger, Supply Chain, Receiving, Procurement, and business requestors to resolve invoice exceptions, payment holds, and account discrepancies - Executing timely ACH, wire, and card payments in accordance with regulatory requirements, approval workflows, segregation of duties, bank-change verification, and fraud-prevention controls - Maintaining and periodically reviewing vendor records, including onboarding documentation, tax forms, and banking details; reconciling vendor statements and responding to vendor and internal inquiries - Supporting month-end close by reviewing open invoices and unmatched receipts, reconciling accounts payable activity, resolving aging items, and assisting with accruals - Contributing to process improvements, system testing, audits, and other finance projects to support business growth This role offers a competitive total compensation package including medical, dental, and vision coverage; 31 days of PTO (21 vacation and 10 sick days); 10 paid holidays plus company-wide winter break; up to 5% employer 401(k) match; short-term and long-term disability and life insurance; paid parental leave (up to 16 weeks); and an annual wellness stipend. REQUIREMENTS: - 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 ability to accurately process at least 200 invoices per week - Strong attention to detail, organization, and time management with ability to learn quickly, prioritize competing needs, and meet deadlines - Strong problem-solving and customer service skills with 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

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