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# Senior Penetration Tester

- **Company:** Spektrum
- **Location:** Amsterdam, Netherlands
- **Experience:** Expert
- **Contract:** Temporary to permanent
- **Skills:** Microsoft Windows, Software System Penetration Testing, User Authentication, Bash Shell, Unix, Configuration Management, Perl (Programming Language), Python (Programming Language), Korn Shell, Network Security, Network Administration, Red Team (Cyber Security), Ruby, Shell Script, Strategies of Testing, Web Applications, Scripting, Software Security, Malware, Information Technology, Blue Team (Cyber Security), Vulnerability Analysis
- **Published:** October 15, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=ab3b6ce63d81708e

## About the Role

* Web application penetration testing.
 * IT infrastructure penetration testing.
 * Network security architecture and design.
 * Vulnerability assessment of operating systems, applications, protocols and networks.
 * Penetration testing tools, techniques and recognised testing methodologies.
 * UNIX and Windows system and network administration.
 * Scripting in at least one of the following:
*

 + Python
 + Perl
 + Ruby
 + Shell scripting (Bash, Ksh or Csh)
 * System and network security.
 * Authentication and security protocols.
 * Cryptography and application security.
 * Malware infection techniques and protection technologies.
 * Security product and technology evaluation.
 * Risk assessment and mitigation planning.
 * Technical report writing for executive and technical audiences.
 * Strong communication and stakeholder management skills.

Experience

More than 3 years of extensive knowledge and experience in the technical areas; including penetration testing, network security architecture, vulnerability assessment and security technologies.

The role also involves participation in NATO military exercises and communicating findings to senior stakeholders.

## Description

NCIA requires an experienced Senior Penetration Tester to support cybersecurity assessments, penetration testing and Red/Blue Team activities during NATO military exercises.

The role focuses on web application, infrastructure and application-level penetration testing, security design reviews and cybersecurity consultancy.

The successful candidate will work with NATO security stakeholders, support accreditation-related activities and communicate technical findings and security recommendations to senior management and military leadership.

Role Duties and Responsibilities

 * Lead or participate in Red Team and Blue Team activities during NATO military exercises.
 * Conduct web application, infrastructure and application-level penetration testing.
 * Perform security design reviews to ensure compliance with NATO security policies and directives.
 * Provide cybersecurity consultancy and technical advice to projects and other stakeholders.
 * Identify and assess security vulnerabilities in operating systems, software, protocols and networks.
 * Evaluate security risks and develop mitigation recommendations.
 * Research and evaluate security products and technologies.
 * Prepare structured penetration testing reports, including executive summaries, technical findings and remediation plans.
 * Present security assessment results to technical teams, executives and senior military leadership, including flag officers.
 * Collaborate with the NCIA Configuration Control Board, Security Accreditation Boards and NATO Security Accreditation Authorities.
 * Coordinate with the Head of the Penetration Testing Cell and internal and external stakeholders.