Director, Finance & Accounting

This position is based onsite in San Diego, CA.

Mainstay Medical

Mainstay Medical is a medical device company focused on marketing an innovative implantable neurostimulation system, ReActiv8®, for people with disabling chronic mechanical Low Back Pain. The company is headquartered in Dublin, Ireland, with subsidiaries operating in the United States, Australia, the United Kingdom, and Germany.

Position Summary


The Director, Corporate Finance is a senior finance leader responsible for overseeing core accounting and finance operations, including financal reporting, internal and external auditing, stock plan administration, expense reimbursements, SOX compliance, accounts payable and receivable, and all other corporate finance processes. This role ensures the integrity of financial reporting, operational efficiency, regulatory compliance and strong internal controls within the Mainstay Medical group. The role will partner closely with executive leadership, external auditors, legal counsel and other operational stakeholders to support strategic growth and maintain financial excellence.


Position Responsibilities

• Lead day-to-day corporate finance and accounting operations, ensuring accuracy, efficiency, and compliance with company policies and regulatory standards.
• Oversee monthly, quarterly, and annual close processes, including financial statement preparation and reconciliations.
• Develop and maintain accounting policies, procedures, and finance operational controls.
• Partner with executive leadership to support strategic financial initiatives and organizational growth.
• Coordinate with external auditors, legal counsel, and internal stakeholders to ensure timely and accurate reporting.
• Oversee accounts receivable and accounts payable functions to ensure efficient cash flow management and operational effectiveness.
• Monitor collections, aging analysis, payment processing, and vendor relationships.
• Implement process improvements to enhance efficiency and reduce operational risk.
• Establish performance metrics and reporting for finance operations activities.
• Lead administration and oversight of employee stock compensation and equity programs.
• Partner with HR, legal, payroll, and external providers to manage stock option grants, vesting schedules, exercises, forfitures, and reporting.
• Serve as primary finance contact for internal and external audits, coordinating annual audit activities and supporting audit readiness across finance operations.
• Drive continuous improvement in finance controls, documentation, and operational processes.
• Oversee corporate expense management processes, including administration of Concur expense reporting and travel systems.
• Ensure policy compliance, timely reimbursement processing, and expense reporting accuracy.
• Collaborate with IT and cross-functional teams on finance system enhancements and integrations.
• Provide financial insights and operational recommendations to senior leadership.
• Support mergers and acquisitions, due diligence, integration planning, IPO readiness, and strategic initiatives as needed.
• In connection with and after any IPO, manage public financial reporting and compliance, as well as related processes.
• Build and mentor high-performing finance and accounting teams.

Qualifications/Experience

• 10+ years of experience with at least 5 years of global functional and people management experience.
• Bachelor's degree in Accounting, Finance, Business Administration, or related field required.
• CPA certification strongly preferred.
• MBA or other advanced financial certification preferred.
• Prior experience in a publicly traded company environment required.
• Experience leading SEC reporting, audits, and SOX compliance activities required.
• Strong knowledge of U.S. GAAP, SEC reporting requirements, SOX compliance and IFRS.
• Strong interpersonal and organizational skills; ability to work with a diverse team and influence/drive change across functional and business boundaries.
• Advanced proficiency in Microsoft Excel and financial reporting systems.
• Experience with financial consolidations, operational reporting, and internal controls.
• Excellent written and oral communication skills with the ability to influence senior leadership.
• Proven ability to manage multiple priorities in a fast-paced environment.

Core Values & Competencies

• Urgency - Prioritize the most critical items and address them with a sense of urgency.
• Bold Actions - Proactively problem solves, generates innovative ideas and is not stuck in the past. Has the courage to try new things.
• Understand the Business - Constantly grow our Clinical Knowledge of ReActiv8 and treatment of CLBP.
• Growth - Never stops growing and expects the same of others.
• Gratitude - Thankful for the opportunity to bring ReActiv8 to patients and physicians.
• Teamwork - Market creation is a team sport, and all team members are needed to be successful.
• Acting Like an Owner - No job is too big, no job is too small. Personally invested in our success.
• Integrity - Does the right thing, even when it's hard.

• Strong leadership and team development capabilities.
• Excellent analytical, organizational, and problem-solving skills.
• High attention to detail and commitment to accuracy.
• Ablity to balance strategic leadership with hands-on execution.
• Capable of working with teams across time zones / cultures / countries.

Physical Demands

While performing the duties of this job, the employee is regularly required to stand; walk; sit; use hands to finger, handle of feel; reach with hands and arms; climb or balance; stoop, kneel, crouch, see, talk or hear in a standard office environment and independently from remote locations. Employee must occasionally lift and/or move up to 20 pounds. Ability to travel by car or airplane independently up to 10% of the time and work after hours is required by travel schedule or business issues.


The intent of this position description is to provide a representative summary of the major duties and responsibilities performed by the incumbents of this position. Incumbents may be required to perform job-related tasks other than those specifically presented in this job description.