Job Type

Permanent

Cheltenham

United Kingdom

100000

Per annum
Skill Level

Key Skills

  • Active Directory
  • C2 Frameworks
  • CBEST
  • Cloud Security
  • EDR Evasion
  • NSD
  • Offensive Security
  • Penetration Testing
  • Post Exploitation
  • Red Team
  • Social Engineering
  • TIBER
Job Posted: March 30, 2026
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Offensive Security Engineer

  • Permanent
  • Cheltenham
  • £80000 - £100000 per annum GBP / Year

Searchability

Offensive Security Engineer , Gloucestershire – UK

  • Up to £100,000 Depending on Experience
  • Hybrid working (3 days onsite per week)
  • Must be eligible for DV clearance

ABOUT THE CLIENT

Our client is a specialist security consultancy with a strong track record in delivering high impact research and offensive security services. They are expanding into new areas and building out a dedicated red team capability with long term investment and clear growth plans. Due to this expansion, they are looking for skilled Offensive Security Engineers to play a key role in shaping and delivering this capability.

THE BENEFITS

  • Training, certifications, and development support
  • Enhanced parental leave and lifestyle benefits
  • Clear progression structure
  • Regular technical events
  • Private medical
  • Annual bonus

THE OFFENSIVE SECURITY ENGINEER ROLE

You will plan and execute full scope red team operations, simulating realistic threat actors across a range of environments. This includes network infrastructure, cloud, Active Directory, web applications, and social engineering campaigns.

You will work across the full attack lifecycle, from initial access through to post exploitation, using advanced techniques to emulate real world adversaries. You will also develop tooling, produce high quality reports, and provide actionable remediation guidance to clients.

OFFENSIVE SECURITY ENGINEER ESSENTIAL SKILLS

  • Commercial experience delivering full scope red team engagements
  • Ability to lead or contribute to complex offensive security operations
  • Strong knowledge of networking, infrastructure, and security controls
  • Experience with C2 frameworks, EDR evasion, and post exploitation techniques
  • Understanding of Active Directory and enterprise environments
  • Experience with cloud and web application testing
  • Ability to write scripts and modify tooling
  • Strong reporting and stakeholder communication skills
  • Experience with frameworks such as CBEST, TIBER, or similar

TO BE CONSIDERED

Please either apply through this advert or emailing me directly via [email protected]. For further information please call me: 07719 065949.

By applying for this role, you give express consent for us to process and submit (subject to required skills) your application to our client in conjunction with this vacancy only.

KEY SKILLS

Red Team, Offensive Security, Penetration Testing, C2 Frameworks, Active Directory, EDR Evasion, Post Exploitation, Cloud Security, Social Engineering, CBEST, TIBER, NSD

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