Offensive Security Specialist — Lead, Train, or Build Tools

DEFION; Netherlands; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Permanent contract after probation

Mobility budget or lease car

High-end laptop and phone

Personal training budget

Job summary

DEFION is seeking an experienced offensive security professional to conduct security tests across web, cloud, infrastructure, and mobile environments. You will document findings and present results to clients, while choosing an area of specialization that aligns with your interests.

The role offers short, varied projects and the opportunity to shape your own career path, including potential leadership, tooling, and advisory work, in a hybrid setting from Zoetermeer.

Qualifications

• Proven experience with pentesting and security assessments.
• Knowledge of Cloud Security (AWS/Azure), Active Directory, mobile app security, OAuth/SAML, cryptography.
• Experience with tools like Burp Suite, Nessus, or Nmap.

Responsibilities

• Conduct a full range of offensive security tests: web applications, infrastructure, cloud, mobile, and more
• Document findings in detailed reports and present results directly to clients
• Specialize in areas that match your interests: cloud security, red teaming, infrastructure, or security consulting/governance
• Provide security training, advise prospects, and mentor juniors and interns
• Develop and improve internal tooling when that is where your passion lies

Skills

Offensive security

Pentesting

Cloud security

Active Directory

Security reporting

Education

Bachelor's or Master's degree in a technical field

Tools

Burp Suite

Nessus

Nmap

Job description

DEFION is seeking an experienced offensive security professional to conduct security tests across web, cloud, infrastructure, and mobile environments. You will document findings and present results to clients, while choosing an area of specialization that aligns with your interests.

The role offers short, varied projects and the opportunity to shape your own career path, including potential leadership, tooling, and advisory work, in a hybrid setting from Zoetermeer.