Senior Business Controller

Job Description

At WithSecure™, we protect businesses all over the world. Our SaaS solutions safeguard against modern cyber threats, and our innovative Co-security approach reflects our belief that true protection requires collaboration and shared expertise. No one can solve every cyber security problem alone. Our vision is to become Europe’s flagship in cyber security. Every day, our talented teams work to prevent cyber extortion, secure critical infrastructure, and prevent misuse of sensitive data. At WithSecure, it’s our people who make us exceptional – a diverse community that values passion, purpose, and a commitment to workplace well-being. If you’re ready to make an impact with a company that’s transforming cybersecurity, we’d love to hear from you.

Are you a commercially minded finance professional who thrives at the intersection of numbers and strategy?

We're looking for a talented Senior Business Controller to join our team and play a pivotal role in shaping our financial future. This is a high-impact position for someone who doesn't just report the numbers — but influences them.

What You'll Do

Drive Financial Performance: You'll own management accounting and reporting end-to-end, keeping a close eye on financial performance and ensuring our strategy translates into measurable results. From delivering accurate actuals to leading a robust forecasting and budgeting cycle, your work will sit at the heart of the business.

Be a True Business Partner Working hand-in-hand with leaders across the organisation, you'll prepare financial plans and estimates that support smart decision-making. You'll assess performance against our strategic goals and turn complex data into clear, actionable recommendations — helping us seize opportunities and navigate challenges with confidence.

Build Capability: Beyond your own desk, you'll actively coach and upskill non-finance colleagues, empowering them to understand and own their numbers. You'll also develop and enhance our reporting systems to make sure the right information reaches the right people at the right time.

What We're Looking For

• Strong background in management accounting, financial planning & analysis (FP&A), and business partnering
• Fluency in SaaS unit economics (ARR bridges, NRR, CAC payback, gross margin by product/channel, partner rebates impact)
• Proven ability to translate financial data into strategic insights and recommendations
• Excellent stakeholder management and communication skills — you're as comfortable in the boardroom as you are in the spreadsheet
• Experience with financial reporting systems and a continuous improvement mindset
• AI literacy — comfortable leveraging AI tools to enhance analysis, automate reporting, and drive smarter, faster decision-making
• A collaborative team player who can also work independently and manage competing priorities
• Strong proficiency in AI technologies and tools.
• Proven experience in applying AI solutions to solve real-world business or technical challenges.
• Ability to collaborate with cross-functional teams to implement AI-driven initiatives.
• Strong problem-solving skills, analytical thinking, and continuous learning mindset to keep up with evolving AI technologies.

If you don’t tick every box above, don’t worry — we’re more interested in your potential and willingness to learn.

The salary displayed on this page represents the starting point for the role. Final compensation is discussed individually and depends on experience, skills, and the local market.

What will you get from us

• Meaningful work with real-world impact – your work helps protect businesses and critical infrastructure from modern cyber threats.
• Flexible ways of working, including up to 30 days per year working abroad and paid sick leave from day one.
• A strong focus on well-being, with mental health support and comprehensive benefits.
• Continuous learning, modern tools, and a people-first culture that values trust and collaboration.

Why Join Us?

• Genuine influence over business strategy and outcomes
• A collaborative, forward-thinking finance team
• Opportunities for professional growth and development
• Competitive salary and benefits package

We are an equal opportunity employer and welcome applications from all backgrounds.

Ready to make your mark? Apply now and tell us how you'd bring this role to life.