Finance Manager

As PortSwigger grows in size and complexity, we need to keep our foundations strong. That includes world-class financial control. This role ensures our financial records are accurate, our costs are understood and well governed, our systems scale with the business and that changing accounting standards are risk assessed and new procedures introduced. You’ll be a key part of a forward-looking finance team; making sure that as we grow, we do it right by introducing an optimal level of financial controls that are robust and equally scalable.

What you’ll be doing

This role is more than number-crunching. You’ll help keep our financial operations robust and future-ready, directly supporting the business in our next chapter. Here’s how you’ll make an impact:

• Powering customer-centric growth

• Review and understand existing revenue recognition policies in-line with changing accounting standards and product offerings

• Creating clarity and control for scale

• Ensure existing system configuration is both efficient and scalable ensuring we consider all existing and/or new integrations and AI opportunities
• Oversee supplier invoice workflows via AutoEntry, ensuring speed and accuracy
• Own end-to-end supplier payments using systems and manage procurement – keeping us efficient and agile
• Manage company expenses, ensuring transparency, ease of use, and strong governance
• Managing the groups share option accounting books and records
• Ensuring suitable consolidation procedures are introduced along with appropriate intercompany accounting policies
• Help strategise new policies and procedures and play a pivotal role in the delivery of new finance based project initiatives

• Deliver timely, accurate monthly accounts that give real visibility into our performance
• Own balance sheet reconciliations throughout the month—not just at month-end, to help teams act with confidence
• Collaborate on monthly statutory P&L and balance sheet reviews that feed directly into our strategy reviews and OKR tracking

• Contribute to statutory accounts and audit readiness, helping us stay compliant and credible as we scale
• Keep us aligned to relevant accounting standards, evolving our approach as complexity grows
• Champion cost governance, surfacing insights that help teams spend wisely and scale smartly
• Opportunities to lead on business-wide financial led initiatives which promote strong risk-based management procedures and policies whilst maintaining the ethos of the organisation

• ACA//CIMA newly qualified, with solid experience in financial control and month-end processes and business change. Ideally second time mover however could be 4-5 years in practice and first move into industry given experience
• Energetic, detail-driven, and excited to help scale a values-led, high-growth business
• Comfortable navigating both operational and technical accounting tasks, bringing strong technical accounting expertise
• Adaptable and able to think proactively in-line with scaling business
• Confident working across teams to bring structure, transparency, and pace to financial operations
• Keen to be part of a company that puts people, purpose, and innovation at the heart of everything
• Able and willing to bring foresight and challenge to existing business processes

Bonus if you have…

• Experience working with a global or SaaS business, or software licensing models.

Why you’ll love it here

This isn’t just about ticking boxes – it’s about doing things well, improving continuously, and enabling smart, values-driven growth. You’ll be part of a finance team that’s embedded in the business, trusted by stakeholders, and committed to staying true to our roots as we scale.

You’ll get the autonomy to shape how we work, support to grow your career, and a culture that genuinely cares about doing great work in a great environment.

Why join PortSwigger?

We’re a team of curious, driven people working together to secure the web. Our culture is our superpower—collaborative, human, and focused on meaningful work. Read more about our culture and values on our Careers page and Staff Handbook.

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