Controller

Ossium Health•San Francisco, CA

19d•Hybrid

About The Position

Ossium is a bioengineering company that develops, manufactures, and banks cell therapy products intended to improve human health and treat blood, immune, and orthopedic diseases. The Controller will lead and strengthen the accounting function as the company scales, reporting to the VP, Finance and initially leading a small team. The role focuses on improving the quality, speed, and reliability of accounting operations and financial reporting. The Controller will oversee corporate accounting, lead the close and financial statement preparation, and manage the annual financial statement audit. The role includes working with the technical accounting team on complex matters, strengthening internal controls and accounting policies, supporting accounting for R&D and clinical expenses, government funding, equity, inventory, and cost accounting, and partnering with the VP, Finance on budgeting and forecasting. The Controller will also produce clear written analyses and documentation for auditors, leadership, and investors. The role is based in Ossium’s San Francisco office and follows a hybrid schedule: in-office Monday through Thursday and remote on Friday. The stated annual salary range is $195,000–$240,000. The successful candidate’s starting salary depends on job-related skills, experience, qualifications, and market conditions, and the range may be modified in the future.

Requirements

10+ years of progressive accounting experience.
At least 3 years of public accounting experience.
At least 3 years in a Controller or Assistant Controller role.
At least 3 years of direct people management experience, including hiring, coaching, and developing staff.
Proven ownership of the full month-end, quarter-end, and year-end close process, including preparing financial statements and flux or variance analyses.
Experience leading financial statement audits end to end, preparing audit schedules, managing PBC requests, and serving as the primary point of contact.
Strong technical knowledge of US GAAP and ability to research accounting issues and prepare technical memos.
Experience with inventory and cost accounting.
Hands-on experience with NetSuite and Bill.com.
Proven ability to work cross-functionally with internal teams.
Advanced Excel and analytical skills.
Excellent verbal and written communication skills, including the ability to explain financial results clearly to non-finance stakeholders.
Ability to work a hybrid schedule based in the San Francisco office, with in-office work Monday through Thursday and remote work on Friday.

Nice To Haves

Experience in a biotech, pharmaceutical, or FDA-regulated life sciences company.
Experience with cost accounting in a manufacturing, GMP, or lab-processing environment, including standard costing and inventory valuation for biological or perishable products.
Experience implementing an inventory module or integrating an inventory management system with NetSuite.
Experience with clinical trial or R&D expense accruals, including CRO and CDMO arrangements.
Experience accounting for government grants or contracts.

Responsibilities

Lead, mentor, and develop the accounting team; set priorities, review work, and help plan future team growth.
Oversee corporate accounting functions, including accounts payable and receivable, revenue, payroll accounting, fixed assets, and financial reporting.
Own the monthly, quarterly, and year-end close and prepare US GAAP financial statements within management’s timelines.
Prepare monthly flux analyses and report variances and trends to the VP, Finance and leadership.
Lead the annual financial statement audit, manage the auditor relationship, and coordinate with the technical accounting team on complex accounting matters.
Partner with Supply Chain and Operations to bring inventory accounting fully into NetSuite.
Design, document, and maintain internal controls to reduce financial risk and ensure accurate company records.
Identify and implement improvements to accounting processes, policies, and procedures.
Work with leaders across Ossium to optimize accounting and finance systems and scale processes to support business growth.
Manage external relationships for audit, banking, compliance, insurance, and tax.
Prepare written materials such as technical memos, auditor responses, and answers to investor questions.
Complete the 2025 financial statement audit and plan, kick off, and complete the 2026 financial statement audit.
Kick off the project to bring inventory accounting fully into NetSuite.
Learn the month-end close process and identify early opportunities to shorten the timeline, improve flux reporting, and strengthen controls.