Offensive Security Engineer (Penetration Testing | Red Team | Adversary Simulation) em Maia, Portugal

Location: Leca do Balio, Portugal

About the Role

We are looking for a skilled Penetration Tester to support offensive security assessments and incident response activities across enterprise environments. In this role, you will identify vulnerabilities, simulate real-world attack scenarios, and collaborate closely with DFIR, SOC, and security operations teams . The position combines advanced penetration testing with hands-on support during cyber incidents, threat investigations, and continuous security improvement initiatives.

Key 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.

Requirements

• Minimum 3 years of experience in penetration testing or offensive security roles.
• Strong hands-on experience in:
• Web and API security testing
• Network and infrastructure assessments
• Cloud security testing
• Active Directory security
• Experience supporting or collaborating with incident response (DFIR) teams .
• Ability to communicate technical findings clearly to both technical and non-technical stakeholders .
• Portuguese (C1) and English (C1) proficiency.
• Availability for medium travel .

Preferred Qualifications

• Offensive Security certifications:
• OSCP, OSEP, OSWE
• SANS certifications:
• GPEN, GCFA
• Experience in:
• Threat hunting and forensic analysis
• Security validation and purple teaming
• Attack simulation and adversary techniques

What We Offer

• Competitive compensation package and benefits.
• Opportunity to work on advanced offensive security and incident response projects .
• Continuous training and access to certifications and learning programs .
• Collaborative environment with SOC, DFIR, and Threat Intelligence teams .
• Hybrid/office flexibility (depending on local policy) and international exposure .

YOUR CAREER AT THALES Future opportunities will allow you to discover other domains or sites. You will be able to evolve and grow your competences in different areas: Room and attention to personal development Build your talents in another domain of Thales Group, discovering new products, new customers, new country or go to a more complex Solution Choose between a technical expertise or a leadership path Build an international career within a leading Engineering Group