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Offensive Security

Senior Security Testing Specialist - freelance

Netcompany logoNetcompanyStrasbourg, Grand Est, FranceContractPosted 2d ago

The full posting

Company Description

Are you ready to shape the future technological landscape in Europe?

We are dedicated to responsible digitalisation, building innovative, inclusive solutions that drive meaningful impact. With over 8,900 professionals across Europe, we help EU institutions, public and private organisations thrive in a rapidly evolving digital world. Are you ready to shape the future through technology? Your journey starts here. Take a look at some of our impactful projects here: https://netcompany.com/cases/

As a **Senior Security Testing Specialist, **you will

  • Define and maintain security standards, baseline configurations, and hardening guidelines for operating systems, applications, networks, and security platforms.
  • Perform vulnerability assessments, technical security audits, and security configuration reviews across infrastructure, applications, databases, and security devices.
  • Conduct network and web application penetration testing using Black Box, Grey Box, and White Box methodologies.
  • Execute source code reviews and assess software compliance with secure development and OWASP best practices.
  • Design and support the implementation of security architectures, controls, technologies, and technical security procedures.
  • Perform log analysis, security monitoring, threat detection, and support incident response and digital forensic activities.
  • Configure, manage, and assess Identity and Access Management (IAM) solutions, including privileged access management platforms.
  • Produce security assessment reports, remediation recommendations, and technical security documentation.

What would make you a fit for the role

  • Master's degree or equivalent, with a minimum of four years of higher education completed after secondary school.
  • Minimum 6 years of professional experience in ICT Security, including security testing and assessment activities.
  • Proven experience in vulnerability assessments, penetration testing, security audits, and security configuration reviews.
  • Strong knowledge of security frameworks and standards, including ISO 27001, NIST, SANS Critical Controls, and OWASP.
  • Hands-on expertise in network security, Linux and Windows security, TCP/IP, secure system administration, and application security.
  • Experience with security technologies such as SIEM, IAM, IDS/IPS, firewalls, DLP, PKI, endpoint security, vulnerability management, and threat detection platforms.
  • Experience in security operations, incident response, threat hunting, forensic analysis, and security monitoring activities.
  • Excellent communication skills in English, knowledge of French is an advantage.
  • Relevant industry certifications such as CISSP-ISSAP, CISM, CISA, OSCP, OSCE, GPEN, CEH, CCNA, or CCNP are considered a strong asset.

Additional Information

If you are looking forward to be part of a diverse environment, and have the opportunity to work alongside well-experienced professionals, on challenging, large-scale projects that directly impact millions of citizens around the globe, then this is the place to be!

#LI-SS2

Please upload your CV in English via the Apply button. All applications will be treated as strictly confidential.

We ensure equal opportunities, treatment, and consideration to all candidates. Discrimination based on sex, racial or ethnic origin, religion or belief, disability, age, sexual orientation or marital status, physical or mental disability, or any other factor protected by applicable laws and regulations is prohibited. As part of the Netcompany culture, we respect human rights and focus on creating a positive workplace, where all employees are valued, and where diversity and inclusion are a vital part of our everyday working experience.

In the following link you may find our CV Submission privacy notice: https://netcompany.com/cv-submission-privacy-notice/

Text as Netcompany published it; last compared with the original on 13 Nov 2026.

The employer: Netcompany

Netcompany builds and runs IT systems for governments and large companies, with 12 security openings in Greece, Denmark, France and the UK.

Pay and benefits: Salaried staff roles, several freelance contracts and a part-time student assistant position.

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