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Thales

Global defense and aerospace electronics

Offensive Security Engineer - Multiple Teams

Offensive Security & TestingConfirmed live in the last 24 hours
Full-timeLeça do Balio, PortugalNo salary listedHybrid

About the Job

Requirements

  • At least 3 years of experience in penetration testing or offensive security roles.
  • Hands-on experience in web and API security testing, network and infrastructure assessments, cloud security testing, and Active Directory security.
  • Experience supporting or collaborating with incident response (DFIR) teams.
  • Portuguese proficiency at C1 level.
  • English proficiency at C1 level.
  • Availability for medium travel.

Responsibilities

  • Conduct web, network, cloud, and Active Directory penetration tests using modern offensive security techniques and tools.
  • Support incident response engagements, including forensic analysis, threat hunting, containment validation, and attacker activity reconstruction.
  • Prepare detailed technical reports and executive summaries with clear, actionable remediation recommendations.
  • Collaborate with blue team, DFIR, SOC, and security engineering teams to improve detection capabilities and validate security controls.
  • Contribute to strengthening the organization’s cyber resilience through proactive testing and technical analysis.

Desired Qualifications

  • Offensive Security certifications such as OSCP, OSEP, or OSWE.
  • SANS certifications such as GPEN or GCFA.
  • Experience in threat hunting and forensic analysis.
  • Experience in security validation and purple teaming.
  • Experience in attack simulation and adversary techniques.

About the Company

Thales

Global defense and aerospace electronics

Thales designs and delivers critical technology for aerospace, defense, and digital security. Its products include electronics, software, and data-security systems that power air travel, payments, and modern military platforms, by integrating hardware and software to build systems such as avionics, radar, cybersecurity, and secure communications that collect sensor data and protect networks. It stands out through deep industrial experience, end-to-end solutions across defense, aerospace, and cybersecurity, and a focus on AI and quantum tech, aided by strategic acquisitions and partial state ownership. Its goal is to provide reliable, secure, and connected technologies that support national security, public safety, and everyday life by solving complex security and connectivity challenges.

Company size
10,001+
Company stage
IPO
Headquarters
Meudon, France
Founded
1893

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