Stelfox Tech Recruitment
Senior Offensive Security Engineer - Red Team
Skills
1 month ago
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Important information
Contract type:
Permanent
Location:
Waterford, Ireland
Work mode:
Remote
Published on:
25 September 2026
What they need
Are you an experienced offensive security professional looking to take on advanced Red Team operations and adversary emulation exercises?
We're looking for a Senior Red Team Operator to help strengthen our cyber resilience by identifying vulnerabilities, testing security controls, and simulating real-world attacks.
Key responsibilities:
🔹 Lead Red Team assessments and adversary simulations
🔹 Conduct network, web, mobile, and social engineering testing
🔹 Develop custom tools, scripts, and automation solutions
🔹 Support Purple Team exercises and detection validation
🔹 Research emerging threats and offensive security techniques
What we're looking for:
✅ 5+ years in offensive security or penetration testing
✅ Strong technical expertise across networks, applications, and cloud environments
✅ Experience with Red Team tooling, Active Directory exploitation, and security research
✅ Excellent communication and reporting skills
✅ OSCP, SANS, CEH, CISSP, CPTS, or similar certifications are a plus
If you're passionate about offensive security and want to work on complex, high-impact engagements, I'd love to hear from you.
This roles requires 2 days onsite in the office in Waterford with 3 days WFH.
If you are interested in exploring an opportunity to join a growing cyber security function, feel free to apply today!
Please note, candidates will need the required work authorisation visas/permits for the Republic of Ireland, to be considered for this opportunity.
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