SaaS Finance Leader: FP&A, Growth & Board Partner

About Us

Realm Security helps security teams control the explosive growth and cost of security data — routing, reducing, and enriching log data before it hits the SIEM, without sacrificing detection coverage. We’re a fast-growing cybersecurity SaaS company built by practitioners for practitioners, scaling our go-to-market and finance operations for our next stage of growth.

Role Overview

Realm Security is seeking a VP of Finance to build and lead the financial infrastructure supporting our next stage of growth. Reporting to the CEO, this leader will own financial planning & analysis, budgeting, forecasting, and reporting, while partnering closely with the executive team and board on strategic decision-making.

This is a hands-on role for an experienced finance leader who thrives in a high-growth SaaS environment.

Key Responsibilities

• Own and evolve the company’s FP&A function, including annual budgeting, quarterly forecasting, and long-range financial planning
• Build and maintain financial models to track core SaaS metrics — ARR, CAC, LTV, net revenue retention, burn multiple, and rule of 40
• Partner with the CEO and executive team on fundraising, board reporting, and strategic planning
• Lead monthly and quarterly business reviews with department heads to track spend against budget
• Oversee cash flow management, runway planning, and capital efficiency
• Partner with Sales and RevOps on pricing, deal structuring, and revenue forecasting
• Ensure accurate, timely financial reporting to the board and investors
• Manage relationships with auditors, banks, and outside financial partners
• Build and develop a high-performing finance team as the company scales

Qualifications

• 10–12+ years of progressive finance experience, with significant time in SaaS; cybersecurity or broader security software experience strongly preferred
• Strong FP&A background is required — hands-on experience owning budgeting, forecasting, and financial modeling in a high-growth SaaS environment
• Based in or willing to relocate to the Boston, MA area; this role requires an on-site/hybrid presence
• Proven experience partnering directly with executive leadership, boards, and investors
• Deep fluency in SaaS metrics and unit economics
• Track record of scaling a finance function and building a team
• Experience managing QuickBooks Online (QBO) as well as ability to lead migration toward mid-market ERP as company scales
• Bachelor’s degree in Finance, Accounting, or related field required; MBA or CPA a plus

Benefits

• Competitive salary and equity
• Comprehensive health benefits
• Flexible PTO
• The opportunity to build and shape the finance function at a fast-growing cybersecurity company