Information Security Technical Consultant

Are you passionate about identifying vulnerabilities, strengthening defences, and helping organizations stay secure? Do you enjoy combining hands-on technical testing with a broader view on risk, compliance, and resilience? Join BDO’s Risk Advisory team and make your career count as an Information Security Technical Consultant. At BDO, you’ll work in a friendly, expert, and hands-on environment where you can grow your cybersecurity expertise and make a tangible impact.

Join the BDO family, a worldwide consulting firm where you can bring your own personality to your job! We help organisations grow sustainably with our expertise in audit & assurance, tax & legal, advisory, accountancy, sustainability (ESG) and digital solutions.

At BDO, you are not just a number. Your wellbeing and development are just as important to us as the personal, hands-on advice and pragmatic solutions we offer our clients. Because as you grow, so do we and so do our clients. That is why our slogan is 'Let's Grow Together'!

What will you be doing?

As an Information Security Technical Consultant, you’ll dive into the technical heart of cybersecurity while helping clients see the bigger picture. You’ll assess systems, uncover risks, and guide them towards secure, compliant, and resilient operations. A week in your role might include:

• Performing penetration tests and vulnerability assessments on infrastructure, applications, and cloud environments.

• Acting as the client contact, helping define project scope and translating needs into clear action plans.

• Conducting technical security audits, reviewing configurations and evaluating control effectiveness.

• Assessing network, system, and cloud architectures, identifying weaknesses and improvement opportunities.

• Supporting information security maturity assessments, aligning clients with frameworks such as ISO 27001, NIS2, DORA, and Cyber Fundamentals.

• Translating technical findings into clear, practical remediation advice.

• Contributing to internal and external audits, validating control design and effectiveness.

• Collaborating with BDO colleagues in Cybersecurity, IT Audit, GRC, and Digital for comprehensive advisory projects.

What do you bring to the table?

• A bachelor’s or master’s degree in Computer Science, Information Security or a related field.

• 2–5 years of hands-on experience in technical security assessments, ethical hacking, or IT/OT security audits.

• Strong command of FR/EN or NL/EN

• Strong understanding of network, system, and cloud security.

• Familiarity with security frameworks such as ISO 27001, NIS2, DORA, NIST CSF, or CIS Controls.

• Experience using common security tools and testing methodologies.

• Excellent analytical, reporting, and communication skills.

• A proactive, pragmatic mindset and drive to learn.

• Experience with OT/ICS environments or security certifications such as OSCP, CEH, or ISO 27001 Lead Implementer/Auditor are a nice to have

What do we bring to the table?

• Culture: you will join a team of experts who encourage respect, diversity and teamwork.
• Development: you decide the direction of your career, and we support you where necessary.
• Impact: from day 1 you will be given responsibility, with support from your team.
• Growth: you get access to a whole range of training courses through our BDO Academy.
• Network: you can work on different projects and clients, across business practices.
• Flexibility: you choose where you work with flexible working hours.
• Wellbeing: your physical and mental health is important to us.
• Proximity: you work in an open culture, so feel free to speak to anyone, at any level.
• Salary: you receive a competitive salary package with interesting benefits.
• Sustainability: you work within a company with an integrated sustainability policy.