Growth Finance Partner

Finance Business Partner

As PortSwigger scales beyond $50M in revenue, aligning financial rigor with go-to-market execution is critical. We're looking for a commercially minded Finance Business Partner to work with the Growth org (Sales, Marketing, Customer Experience) and embed financial discipline into how we acquire, retain, and grow our customer base.

This is a high-impact role designed to accelerate decision-making, optimize revenue performance, and improve the fidelity of our financial planning. You'll sit at the intersection of Finance and Growth, providing insight, clarity, and systematic improvements that drive sustainable revenue growth.

What You'll Be Doing

Financial Planning & Revenue Analytics

• Build robust top-line financial plans, iterating model design and integrating inputs from Sales, Marketing, Customer Experience, and Product.
• Act as a subject matter expert, surfacing and interpreting KPIs such as ARR, GDR, pipeline coverage, CAC, LTV, and sales productivity.
• Deliver actionable insights to highlight risks and opportunities across the funnel.
• Support planning processes with scenario modelling, forecasting, and diagnostics.
• Develop and maintain dashboards to enable self-serve insights for Growth and leadership teams.

Strategic Business Partnering

• Provide commercial finance support for sales leadership, including quota setting, headcount planning, and commission modelling.
• Influence pricing strategy, product monetization, and expansion decisions.
• Collaborate with Product leaders to assess the financial impact of new features and improvements.
• Contribute to board and investor reporting with clear, data-backed revenue insights.

Revenue Process Optimisation

• Identify operational improvements across the lead-to-cash cycle, focusing on scalability and efficiency.
• Support systematic processes around pipeline hygiene, deal stages, and renewals.
• Partner with Sales, Marketing Ops, and Customer Success to align on definitions, handoffs, and SLAs.
• Detect and address revenue leakage or inefficiencies in pricing or contract structures.
• Act as a bridge between Finance and Growth systems—ensuring Salesforce and billing systems remain in sync.
• Work with data engineers to maintain scalable, governed revenue-related data pipelines.

• Executives and Growth leaders have trust in reporting and visibility into key revenue levers.
• Planning processes are efficient, auditable, and trusted by stakeholders.
• Revenue processes are systematic, reducing bottlenecks and leakage.
• Finance is seen as a proactive commercial partner, balancing strategic guidance with operational execution.