Pentester/Ethical Hacker Vast dienstverband Leiden 40 uur p/wk Gearchiveerd Sluitingsdatum 31 aug 2026

At DongIT, we believe good security starts with curiosity and creativity. We are looking for an Ethical Hacker who enjoys breaking things for the right reasons and helping organizations improve their security. If you thrive on finding vulnerabilities, sharing knowledge, and working together in a skilled and friendly team, this role may be the right fit for you.

As an Ethical Hacker at DongIT, you will be directly involved in testing and improving the security of web applications, APIs, mobile apps, networks, and even IoT systems. Our projects vary: from black-box pentests to red team exercises, phishing simulations, and social engineering assessments. Your primary goal is to identify weaknesses, demonstrate their actual impact, and produce reports that clients can understand and utilize to enhance security.

Perform penetration tests on web applications, APIs, mobile apps, networks (internal and external), and IoT devices.

Review cloud environments (AWS, Azure, GCP) to find misconfigurations and security risks.

Examine source codes to detect vulnerabilities.

Detect and exploit vulnerabilities to show risk and impact.

Write clear, actionable reports that help clients improve their security.

Discuss findings with clients and support remediation.

Research new vulnerabilities and attack techniques to stay sharp.

Contribute to red team, phishing, or social engineering projects.

Collaborate with the team to deliver high-quality results and share knowledge.

Keep improving your skills through projects, training, and certifications.

Note: Don't worry if you don't tick every box. We value curiosity, a hacker mindset, and a willingness to learn more than a perfect match.

Someone with a hacker mindset: curious, creative, and persistent in finding security weaknesses.

Experience in pentesting, security consulting, or related work.

Knowledge of common vulnerabilities and tools such as Burp Suite, Nmap, Metasploit, etc.

Basic scripting skills (Python, Bash) and networking knowledge.

Ability to explain technical issues clearly to clients and colleagues.

Enjoys working in a friendly and supportive team.

Knowledge of cloud platforms (AWS, Azure, GCP).

Skills in reverse engineering or malware analysis.

Experience with red team engagements or advanced exploitation techniques.

Relevant certifications (OSCP, OSWE, eCPPT, eMAPT, eCPTX or similar).

Exciting Projects – Work on diverse pentests for leading organizations, from web apps to mobile and networks.

Real Impact – Your findings directly help clients strengthen their security and protect critical systems.

Small, Skilled Team – Collaborate with passionate developers and security specialists.

Hybrid Work – Flexible remote work options or join us at our Leiden office (5 min from the station!).

Personal Growth – Time and budget for training, courses, and certifications.

Great Work Atmosphere – Informal, friendly environment with fun team events.

Competitive Salary – Based on experience and education level.

Extras – Pension plan, travel compensation, NS train card, and high-end laptop.

If you enjoy thinking like a hacker, finding vulnerabilities, and helping clients improve their security, we'd love to hear from you!

Apply now and become part of the Pentesting team at DongIT!

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