Senior Offensive Security Lead
Solliciteren
Plaats
Zaventem1930
Vlaams-Brabant
België
Contract
Vooltijds, Onbepaalde duurDatum gepubliceerd
2026-02-26Online to:
2026-04-27EUR 20.00 HOUR
Senior Offensive Security Lead
- KPMG Belgium
- Vlaams-Brabant
- 4 uren geleden
Function
Advisory - Senior Manager
Roles & Responsibilities
As Senior Offensive Cybersecurity Lead, you are first and foremost a builder of people and capability. Your mission is to create, grow, and mentor a high‑performing offensive security team in Belgium, while developing a modern, credible, and scalable offensive security service offering.
You act as a senior mentor and trusted reference point within the cybersecurity organization - setting technical direction, coaching consultants at all levels, and fostering a culture of learning, craftsmanship, inclusion, and ethical offensive security. While maintaining strong hands‑on credibility, your impact is measured by the strength and confidence of the team you enable, not by individual execution alone.
Build, Grow & Inspire The Offensive Security Team Covering
Penetration testing (infrastructure, cloud, identity)
Web application and API security testing
AI / ML security testing
Red teaming and adversary emulation
Act As a Mentor And Coach For Team Members
Provide technical guidance and structured feedback
Help team members develop depth, specialization, and confidence
Define and maintain skills frameworks and progression paths
Establish Technical Direction & Quality Standards
Set the technical vision for offensive security in Belgium, ensuring consistency, fairness, and quality across all engagements
Define red team operations and purple team collaboration
Act as a review and quality gate for complex engagements and deliverables
Ensure safe, ethical, inclusive, and controlled testing practices across all domains
Develop And Mature The Offensive Security Service Offering
Own the evolution of the service portfolio from foundational penetration testing to advanced, threat‑led and red team engagements
Secure strong integration of web and AI attack surfaces
Develop scalable methodologies, templates, and reusable assets
Ensure services are realistic, defensible, and aligned with modern client environments and expectations
Support Other Cyber Teams
Translate offensive findings into meaningful defensive improvements
Help non‑offensive colleagues understand attacker thinking
Contribute to internal capability building beyond your direct team (training sessions, reviews, coaching)
Client & Stakeholder Leadership
Support key clients as a trusted senior expert
Guide scoping, expectations, and risk discussions - while empowering your team to lead delivery
Participate in proposals and client discussions where senior credibility and mentorship are required
Location
Zaventem HQ
Skills & Qualifications
8–12+ years in offensive security, with strong exposure to:
Penetration testing and red teaming
Web application and API security
Modern cloud and identity environments
Technical Background And Solid Understanding Of
Web application architectures and common vulnerability classes
API abuse patterns and authentication flows
AI/ML security risks (prompt injection, data leakage, misuse scenarios)
Shaping how AI is embedded into your own projects; take ownership of data governance and ensure AI initiatives align with business goals and our standards.
Other Qualities
Ability to guide and review complex technical work
Pragmatic, real‑world attacker mindset with an emphasis on safe, ethical, and inclusive practice
Proven experience building, leading, or mentoring teams
A natural inclination toward coaching, knowledge sharing, and supporting the growth of others
Strong communication skills across both technical and non‑technical audiences.
Fluency in Dutch and English
We offer
As a Certified Top Employer We Offer
An attractive remuneration package with a great number of extra-legal benefits (premium electric company car + charging card, net daily and monthly allowances, bonus, Apple/Android personal device and many other benefits tailored through our cafeteria plan).
Flexible work arrangements to ensure a healthy work-life balance (picking up kids from school, doctor's appointment, working from home,…) and the possibility to work from anywhere 20 days per year.
Comprehensive insurance package including group insurance with full KPMG contributions, hospitalization insurance and optional outpatient options (dental & eye care, medical consultations and registered medication).
Career development opportunities combined with trainings based on your personal goals and aspirations.
An inclusive, international culture where personal growth, mutual trust and lifelong learning is fostered.
A buddy and performance manager to support and guide you throughout your career at KPMG.
Great team building activities and sport & wellbeing events (Brussels Marathon, Antwerp 10 Miles, 1000 kilometers for KOTK, river clean-ups, plant a tree and many more…) through our & KPMG Foundation programs.
Advisory - Senior Manager
Roles & Responsibilities
As Senior Offensive Cybersecurity Lead, you are first and foremost a builder of people and capability. Your mission is to create, grow, and mentor a high‑performing offensive security team in Belgium, while developing a modern, credible, and scalable offensive security service offering.
You act as a senior mentor and trusted reference point within the cybersecurity organization - setting technical direction, coaching consultants at all levels, and fostering a culture of learning, craftsmanship, inclusion, and ethical offensive security. While maintaining strong hands‑on credibility, your impact is measured by the strength and confidence of the team you enable, not by individual execution alone.
Build, Grow & Inspire The Offensive Security Team Covering
Penetration testing (infrastructure, cloud, identity)
Web application and API security testing
AI / ML security testing
Red teaming and adversary emulation
Act As a Mentor And Coach For Team Members
Provide technical guidance and structured feedback
Help team members develop depth, specialization, and confidence
Define and maintain skills frameworks and progression paths
Establish Technical Direction & Quality Standards
Set the technical vision for offensive security in Belgium, ensuring consistency, fairness, and quality across all engagements
Define red team operations and purple team collaboration
Act as a review and quality gate for complex engagements and deliverables
Ensure safe, ethical, inclusive, and controlled testing practices across all domains
Develop And Mature The Offensive Security Service Offering
Own the evolution of the service portfolio from foundational penetration testing to advanced, threat‑led and red team engagements
Secure strong integration of web and AI attack surfaces
Develop scalable methodologies, templates, and reusable assets
Ensure services are realistic, defensible, and aligned with modern client environments and expectations
Support Other Cyber Teams
Translate offensive findings into meaningful defensive improvements
Help non‑offensive colleagues understand attacker thinking
Contribute to internal capability building beyond your direct team (training sessions, reviews, coaching)
Client & Stakeholder Leadership
Support key clients as a trusted senior expert
Guide scoping, expectations, and risk discussions - while empowering your team to lead delivery
Participate in proposals and client discussions where senior credibility and mentorship are required
Location
Zaventem HQ
Skills & Qualifications
8–12+ years in offensive security, with strong exposure to:
Penetration testing and red teaming
Web application and API security
Modern cloud and identity environments
Technical Background And Solid Understanding Of
Web application architectures and common vulnerability classes
API abuse patterns and authentication flows
AI/ML security risks (prompt injection, data leakage, misuse scenarios)
Shaping how AI is embedded into your own projects; take ownership of data governance and ensure AI initiatives align with business goals and our standards.
Other Qualities
Ability to guide and review complex technical work
Pragmatic, real‑world attacker mindset with an emphasis on safe, ethical, and inclusive practice
Proven experience building, leading, or mentoring teams
A natural inclination toward coaching, knowledge sharing, and supporting the growth of others
Strong communication skills across both technical and non‑technical audiences.
Fluency in Dutch and English
We offer
As a Certified Top Employer We Offer
An attractive remuneration package with a great number of extra-legal benefits (premium electric company car + charging card, net daily and monthly allowances, bonus, Apple/Android personal device and many other benefits tailored through our cafeteria plan).
Flexible work arrangements to ensure a healthy work-life balance (picking up kids from school, doctor's appointment, working from home,…) and the possibility to work from anywhere 20 days per year.
Comprehensive insurance package including group insurance with full KPMG contributions, hospitalization insurance and optional outpatient options (dental & eye care, medical consultations and registered medication).
Career development opportunities combined with trainings based on your personal goals and aspirations.
An inclusive, international culture where personal growth, mutual trust and lifelong learning is fostered.
A buddy and performance manager to support and guide you throughout your career at KPMG.
Great team building activities and sport & wellbeing events (Brussels Marathon, Antwerp 10 Miles, 1000 kilometers for KOTK, river clean-ups, plant a tree and many more…) through our & KPMG Foundation programs.
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