Assistant Controller

Optiver is seeking a strategic accounting professional with a passion for precision, process improvement, and cross-functional collaboration to oversee our corporate accounting operations and elevate our financial infrastructure. In this hands-on, pivotal role, you’ll own the accuracy, timeliness, and completeness of our corporate financial records across both IFRS and US GAAP, champion payroll and expense management, streamline inventory and lease accounting, and drive scalable processes that support a dynamic business. This role reports to the US Controller and works closely with global finance, procurement, and tax teams.  If you thrive at the intersection of technical expertise and process improvement in a highly collaborative environment—this is your opportunity to make a real impact!

What you’ll do

As an Assistant Controller your key responsibilities include:

• Ensure financial records are complete, accurate, and compliant with IFRS, US GAAP, internal policies, and external regulatory requirements.
• Review month-end accruals, expense allocations, intercompany activity (including transfer pricing), and various reconciliations.
• Be responsible for the completeness and accuracy of operating expense data, support FP&A function in management reporting.
• Oversee lease accounting and maintain the fixed asset ledger
• Supervise inventory accounting for manufacturing operations, including COGS, WIP, and finished goods valuation
• Champion continuous improvement projects for efficiency and transparency in corporate accounting processes
• Oversee the payroll review process, ensuring timely and accurate payroll execution.
• Ensure adherence to all relevant payroll tax regulations and labor laws.
• Approve payroll-related journal entries, accruals, and benefit reconciliations.
• Oversee payment processes and systems, ensuring security, accuracy, and efficiency.
• Review vendor payments and monitor/manage AP and AR aging.
• Work collaboratively with internal and external stakeholders—including tax, HR, procurement, banks, and auditors.
• Support FP&A function with management reporting and financial planning processes.
• Continuously evaluate, document, and substantiate effectiveness of internal controls.

What you’ll get

• The opportunity to work alongside best-in-class professionals from over 40 different countries

• Highly competitive compensation package including performance-based bonus structure

• 401(k) match up to 50%
• Comprehensive health, mental, dental, vision, disability, and life coverage
• 25 paid vacation days alongside market holidays
• Extensive office perks, including breakfast, lunch and snacks, regular social events, clubs, sporting leagues and more

Who you are

• Bachelor’s degree in Accounting, Finance, or related field; CPA certification required
• Minimum 8 years of progressive accounting experience, with at least 3 years in a management-level position
• Strong knowledge of US GAAP and IFRS with experience in technical accounting projects
• Expertise in lease accounting, inventory accounting, and complex corporate expense allocation
• Direct experience managing payroll and accounts payable functions
• Proficiency with enterprise systems (e.g., NetSuite, Workday, ADP, Coupa), Microsoft Excel, and Tableau
• Effective team leadership and communication skills with ability to engage stakeholders

Who we are

At Optiver, our mission is to improve the market by injecting liquidity, providing accurate pricing, increasing transparency and stabilising the market no matter the conditions. With a focus on continuous improvement, we prioritise safeguarding the health and efficiency of the markets for all participants. As one of the largest market making institutions, we are a respected partner on 100+ exchanges across the globe.

Our differences are our edge. Optiver does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, physical or mental disability, or other legally protected characteristics.