Head of Finance

About the Role

Poseidon is looking for a Head of Finance to own our finance function and help shape how we fund and scale the company. You will lead accounting, FP&A, treasury, tax, and financial operations while partnering with leadership on planning, capital allocation, and financing strategy. This is a hands-on role for someone comfortable moving between long-term decisions and day-to-day execution.

What You'll Do

• Own accounting, budgeting, forecasting, reporting, tax, treasury, procurement, and cash management
• Provide leadership with a clear view of performance, liquidity, runway, and future capital needs
• Develop Poseidon's capital strategy across equity, loans, credit facilities, equipment financing, and leases
• Lead financing processes and manage relationships with banks, lenders, and leasing providers
• Evaluate major equipment purchases and investments based on return, cash flow, risk, and financing options
• Build scalable financial systems, controls, and processes
• Support fundraising, investor reporting, board materials, audits, and financial diligence
• Manage external accounting, tax, audit, and financial partners

About You

• At least five years of relevant finance experience
• Experience leading finance at an early-stage, high-growth, technology, industrial, or R&D-driven company
• Strong hands-on experience across accounting, FP&A, treasury, and operational finance
• Experience evaluating or securing loans, equipment financing, leases, or other forms of capital
• Experience building financial systems and processes from the ground up
• The ability to move comfortably between strategic planning, external negotiations, and detailed execution
• Excellent analytical, organizational, negotiation, and communication skills
• High integrity, sound judgment, and a strong sense of ownership
• Experience with capital-intensive businesses, lender relationships, venture financing, or non-dilutive funding is a plus

What You Get From Us

• Competitive salary and meaningful early-stage equity
• Relocation support if applicable
• Employee Health Benefit Plans
• 6% Retirement matching
• Flexible PTO
• Free lunches, snacks, and a stocked fridge at our offices
• AI tools and subscriptions