Senior Accountant, Revenue

Job Category
:
General & Administrative - Ionis

Requisition Number
: IONIS
003919

• Posted :
  February 18, 2026
• Full-Time

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Headquartered in Carlsbad, California, and with offices in Boston, Massachusetts, and Dublin, Ireland, Ionis has been at work for more than three decades discovering medical breakthroughs that have redefined life for people with serious diseases. We’re pioneers in RNA-targeted medicines, and our platform continues to revolutionize drug discovery and transform lives for patients with unmet needs. With multiple marketed medicines and a leading pipeline in neurology, cardiology and select areas of high patient needs, we continue to drive innovation in RNA therapies in addition to advancing new approaches in gene editing to provide greater value to patients and are well positioned financially to deliver on our strategic goals.

At Ionis, we pride ourselves on cultivating a challenging, motivating and rewarding environment that fosters innovation and scientific excellence. We know that our success is a direct result of the exceptional talents and dedication of our employees.

With an unprecedented opportunity to change the course of human health, we look to add diverse individuals, skill sets and perspectives to our exceptional team. We continue to invest time, money and energy into making our onsite, hybrid and remote work environments a place where solid and lasting relationships are built and where our culture and employees can thrive.

We’re building on our rich history, and we believe our greatest achievements are ahead of us. If you’re passionate about the opportunity to have meaningful impact on patients in need, we invite you to apply and join us. Experience and contribute to our unique culture while you develop and expand your career!

Senior Accountant, Revenue

SUMMARY:

We are seeking a Senior Accountant, Revenue to join our team. This individual will primarily be responsible for owning or supporting activities within the R&D and commercial revenue processes in a growing fully integrated biotech company with expanding commercial operations. This position will report to the Assistant Director of Accounting, Revenue and be onsite at our Carlsbad office 3 days a week.

Perform technical accounting research as needed, support compliance with internal controls / SOX 404 for areas of responsibility, and support management for key accounting initiatives.

The ideal candidate will have public accounting experience and/or experience at a public biotech or life science company with strong working knowledge of US GAAP and ASC 606. This candidate must also exhibit the ability to perform responsibilities within tight deadlines, and in a structured corporate environment while operating independently with minimal oversight. The position operates in a SOX-compliant environment and plays an important role in ensuring accurate financial reporting and effective controls over revenue-related processes.

Therefore, experience in a SOX environment either through public accounting and/or in a public company environment is required. This position requires effective interpersonal skills, strong organizational skills, and the ability to multi-task and be flexible to changing priorities.

RESPONSIBILITIES:

• Prepare journal entries and maintain revenue schedules related to R&D and collaboration revenue.
• Prepare and issue R&D, collaboration, and commercial related invoices in accordance with contractual terms.
• Manage and monitor collaboration and commercial accounts receivable.
• Stay current on revenue accounting guidance, perform research and analysis on current, new or pending technical guidance as needed.
• Own month-end and quarter end close activities including account reconciliations related to revenue and accounts receivable.
• Support quarterly and year-end financial reporting.
• Support compliance with internal controls and SOX 404 requirements.
• Prepare audit deliverables and interact regularly with internal and external auditors.
• Drive improvements to revenue systems and processes.
• Perform other duties and special projects as assigned.

REQUIREMENTS:

• Bachelor’s degree in Accounting or Finance, or…