Senior Accountant

Nautilus; San Carlos (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

Nautilus is seeking a Senior Accountant to join our accounting team in San Carlos, CA. You will lead the monthly close, manage accounts payable, and support SOX controls while collaborating with offshore teams and cross-functional partners.

The role requires 4+ years of progressive accounting experience, a degree in accounting or finance (CPA preferred), and strong Excel and NetSuite proficiency. This is a hands-on position in a fast-growing company driving financial integrity.

Qualifications

• 4+ years of progressive accounting experience, including GL, month-end close, and accounts payable.
• Degree in Accounting or Finance, or equivalent experience; CPA is preferred.
• Strong knowledge of U.S. GAAP and SOX compliance.
• Experience with enterprise financial systems (NetSuite is a plus) and advanced Excel skills.

Responsibilities

• Execute the monthly accounting close, including journal entries for accruals and prepaids.
• Prepare balance sheet reconciliations and investigate reconciling items promptly.
• Maintain SOX controls documentation and testing, ensuring strong internal controls.
• Collaborate with FP&A and cross-functional teams on accrual estimates and schedules.
• Support work papers for quarterly reviews and annual audit.
• Participate in policy implementations and system improvements as the company scales.
• Lead or participate in ad-hoc accounting projects as needed.

Skills

Analytical skills

Detail-oriented

Communication skills

Collaborative working style

Education

Bachelor's degree in Accounting or Finance, or equivalent experience

CPA preferred

Tools

NetSuite

Excel

Job description

At Nautilus, we have a big and important mission: improve the health of millions by unleashing the potential of the proteome to accelerate drug development and enable a new world of precision and personalized medicine. We are developing a single-molecule protein analysis platform of unprecedented sensitivity, scale, and ease of use that we believe will democratize access to the proteome – one of the most dynamic and valuable sources of biological insight. To accomplish this, we are pursuing deep, hard science with an entrepreneurial mindset and creating a world-class team of builders, innovators, and dreamers across a wide range of disciplines.

We are seeking an exceptional individual to join our growing accounting team. The Senior Accountant will play a critical role in maintaining the integrity of our financial records, supporting a well-controlled month-end close, and overseeing the accounts payable function. This is a highly visible role that requires both technical accounting depth and the ability to collaborate cross-functionally across our organization and with our offshore team. The position will report to the Associate Director of Accounting.

Responsibilities

• Execute the monthly accounting close process, including preparation of journal entries for accruals, prepaids, and other general ledger accounts; ensure entries are accurate, well-supported, and posted on schedule.
• Prepare and review balance sheet account reconciliations on a monthly basis; investigate and resolve reconciling items in a timely manner.
• Maintain a strong internal control environment in accordance with Sarbanes-Oxley (SOX) 404 requirements; prepare and update process narratives, risk control matrices, and supporting documentation for assigned control areas.
• Identify opportunities to improve close efficiency, reduce manual work, and strengthen controls; drive implementation in collaboration with the Accounting team and cross-functional stakeholders.
• Partner with FP&A and cross-functional teams on accrual estimates, prepaid amortization schedules, and other inputs for month end close.
• Support the preparation of work papers and schedules for quarterly reviews and the annual audit.
• Assist with the implementation of accounting policies, system improvements, and other projects as the company scales from pre-commercial to commercial operations.
• Participate in or lead ad-hoc tasks and projects as needed.

Requirements

• A minimum of 4+ years of progressive accounting experience, with meaningful exposure to general ledger accounting, month-end close, and accounts payable.
• Degree in Accounting or Finance, or equivalent experience; CPA preferred.
• Solid working knowledge of U.S. GAAP, including accrual accounting and prepaid expense treatment.
• Experience operating within a SOX-compliant environment, including ownership of controls documentation and testing.
• Experience working with enterprise financial systems (NetSuite is a plus).
• Strong analytical skills and proficiency in Excel (VLOOKUP, SUMIFS, Index/Match, pivot tables).
• Detail-oriented with the ability to manage competing deadlines in a fast-paced, high-growth environment.
• Excellent communication skills and a collaborative working style; comfortable partnering with cross-functional teams and managing remote/offshore relationships.
• A continuous improvement mindset and flexibility to grow with the company.