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Posted May 1, 2026

Assistant Controller – Financial Operations & Accounting Leadership Role (Hybrid Work Model in San Francisco)

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About arenaflex

arenaflex is at the forefront of technological innovation, transforming industries through cutting-edge artificial intelligence solutions and pioneering research. As a leader in the tech landscape, we pride ourselves on fostering a culture of excellence, collaboration, and continuous learning. Our team is comprised of brilliant minds dedicated to pushing the boundaries of what's possible, and we're looking for a talented professional to join our finance organization as we scale to new heights.

At arenaflex, we believe that great companies are built on solid foundations, and our finance team is the backbone of our operational success. We are currently seeking an experienced Assistant Controller who will oversee our center bookkeeping and monetary operations capabilities, ensuring precision, compliance, and strategic insight that drives our organization's financial success.

Position Overview

We are seeking a highly skilled and motivated Assistant Controller to lead our financial operations and accounting functions. This pivotal role will be responsible for regulating monthly close processes, internal and external reporting, audits, systems, and policies. The ideal candidate will bring deep technical expertise and the ability to solve complex problems across multiple disciplines while building and maintaining a world-class finance team.

This key, yet hands-on position reports to the Controller and works closely with the VP of Finance, cross-functional leaders, and key external partners. You will be a central member in driving the financial success of the organization by building—and maintaining—a high-performing accounting organization that supports our continued growth and innovation.

Located in San Francisco, CA, this position operates on a hybrid work model requiring 3 days in the office each week. We offer comprehensive onboarding assistance to new team members to ensure a smooth transition into our dynamic environment.

Key Responsibilities

Essential Qualifications

Preferred Qualifications

Skills & Competencies Required for Success

Career Growth & Learning Opportunities

At arenaflex, we are deeply invested in the professional development of our team members. As the Assistant Controller, you will have unprecedented opportunities to grow your career in ways that few organizations can offer:

Work Environment & Company Culture

arenaflex cultivates an environment where innovation thrives and talented individuals can do their best work. Our culture is built on several core principles:

Compensation & Benefits

We recognize that exceptional talent deserves exceptional rewards. arenaflex offers a competitive compensation package designed to attract, retain, and motivate top professionals:

Join Our Team

If you are ready to take the next step in your career and make a meaningful impact at a company that is shaping the future of technology, we encourage you to apply for this exciting opportunity. As the Assistant Controller at arenaflex, you will play a critical role in building and maintaining the financial infrastructure that supports our mission to advance artificial intelligence for the benefit of humanity.

This is your chance to join a world-class team, work on challenging problems, and grow your career in one of the most dynamic and innovative companies in the technology sector. We are looking for a builder—someone who embraces the opportunity to directly impact how our company operates and who revels in the chance to construct robust processes and systems from the ground up.

At arenaflex, we believe that an organization depends on the quality of its foundation, and your passion for growing strong teams and processes will be instrumental in our continued success. If you are excited about new challenges, thrive in fast-paced environments, and are committed to excellence in everything you do, we want to hear from you.

Apply today and become part of a team that is defining the future of technology while building something truly extraordinary together.

Interested in this role?Apply on iHire