Senior Internal Auditor

About This Role

The Senior Internal Auditor plays a key role in strengthening Biogen's risk management, governance, and internal control environment, while gaining broad exposure to the processes and building an understanding of Biogen's business objectives, operating model and industry environment. This role goes beyond routine testing and enables the Senior Auditor to develop strong technical skills, sound judgment, and a business‑oriented perspective.

As part of a high‑performing Internal Audit team, you will execute risk‑based audits, work closely with Audit Management and business stakeholders, and contribute practical insights that support informed decision‑making and continuous improvement across the organization. This role is well-suited for professionals seeking to deepen audit judgment, gain broad business exposure, and build a foundation for future growth within Internal Audit or the life sciences industry.

• Execute financial, operational, IT, and compliance audits from planning through reporting under the direction of Audit Management, with ownership of assigned audit areas, testing, and deliverables
• Apply a risk‑based approach to identify key risks, evaluate control design and operating effectiveness, and assess process performance in alignment with Internal Audit standards
• Lead interviews and walkthroughs for assigned areas; document process understanding, risks, and controls with clear traceability
• Perform audit procedures (including analytics‑enabled testing), identify control gaps and root causes, and draft clear, evidence‑based observations and recommendations for management review
• Support audit reporting by contributing concise, actionable write‑ups and ensuring workpapers support conclusions and Internal Audit quality standards
• Build strong working relationships with process owners and stakeholders while maintaining independence and objectivity
• Prepare and maintain high‑quality documentation and workpapers in accordance with Internal Audit methodology and documentation standards
• Support SOX activities, including testing of higher‑risk controls, while gaining exposure to broader financial and operational audits (including integrated audits where applicable)
• Participate in special projects and continuous improvement initiatives (e.g., templates, automation, analytics use cases) that enhance audit efficiency and consistency
• Provide informal guidance to less experienced staff (e.g., walkthrough support, testing approach, documentation quality) and escalate risks/issues to Audit Management in a timely manner

• 2+ years of external or internal audit experience
• Bachelor's degree in Accounting, Finance, Business Administration or related field
• Working knowledge of internal controls, audit methodology, and risk assessment
• Clear and effective written and verbal communication skills
• Strong analytical, organizational and critical-thinking skills
• Willingness to travel up to 20%, including international assignments
• Functional knowledge of Generally Accepted Accounting Principles, General Accepted Auditing Standards and other applicable regulatory requirements.

• Experience working in a Big 4 organization
• CPA or meaningful progress towards certification
• Life Sciences industry experience or relevant business experience outside audit
• Experience performing or supporting SOX testing activities
• Exposure to data analytics, technology‑enabled audit tools, AI technology

• Medical, Dental, Vision, & Life insurances
• Fitness & Wellness programs including a fitness reimbursement
• Short- and Long-Term Disability insurance
• A minimum of 15 days of paid vacation and an additional end-of-year shutdown time off (Dec 26-Dec 31)
• Up to 12 company paid holidays + 3 paid days off for Personal Significance
• 80 hours of sick time per calendar year
• Paid Maternity and Parental Leave benefit
• 401(k) program participation with company matched contributions
• Employee stock purchase plan
• Tuition reimbursement of up to $10,000 per calendar year
• Employee Resource Groups participation