Penetration Tester

Citation Cyber; Slough; Hybrid; GBP 70,000 - 90,000; Full time

Benefits offered by this job

Hybrid working

Funded training

Industry certifications

Career progression

Flexible / hybrid hours

Job summary

Citation Cyber is seeking a Security Consultant to join its penetration testing team in a hybrid UK role. You will deliver security assessments across client environments, producing thorough reports and presenting remediation recommendations to clients.

Ideal candidates will have consultancy or equivalent experience in infrastructure and web app pentesting, strong reporting skills, and familiarity with Windows, Linux, AD, and cloud security testing (Azure/AWS).

Qualifications

• Commercial penetration testing experience in a consultancy or similar
• Strong technical reporting skills
• Experience in infrastructure and web app penetration testing
• Good understanding of Windows, Linux and Active Directory
• Familiarity with Azure and/or AWS security testing
• Experience using standard penetration testing tools and methodologies
• Excellent written and verbal communication skills
• Passion for continuous learning and technical development

Responsibilities

• Deliver a wide range of technical security assessments across client environments
• Identify vulnerabilities and help strengthen client cyber resilience
• Produce clear, high-quality technical reports
• Present findings and remediation advice to clients
• Support vulnerability validation and re-testing
• Contribute to internal tooling, research and knowledge sharing

Skills

Commercial pen testing

Technical reporting

Infrastructure testing

Web app testing

Windows/Linux/AD

Azure/AWS testing

Penetration testing tools

Communication

Continuous learning

Tools

Industry-standard tools

Job description

Security Consultant (Penetration Testing)

Location: Hybrid (UK)

Salary: Competitive + Benefits

Security Clearance: Current SC preferred

About Citation Cyber

Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations across both the public and private sectors.

As an NCSC CHECK provider and CREST member company, we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us.

Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step, we'd love to hear from you.

The Role

You'll work as part of our penetration testing team delivering a wide range of technical security assessments across client environments, helping organisations identify vulnerabilities and strengthen their cyber resilience.

Your work will include:

• Infrastructure or Web application penetration testing
• Cloud security assessments
• Producing clear, high-quality technical reports
• Presenting findings and remediation advice to clients
• Supporting vulnerability validation and re-testing
• Contributing to internal tooling, research and knowledge sharing

What we're looking for

Essential

• Commercial penetration testing experience within a consultancy or equivalent environment
• Strong technical reporting skills
• Experience conducting infrastructure and web application penetration tests
• Good understanding of Windows, Linux and Active Directory environments
• Familiarity with Azure and/or AWS security testing
• Experience using industry-standard penetration testing tools and methodologies
• Excellent written and verbal communication skills
• A passion for continuous learning and technical development

Desirable

• Current CHECK Team Member (CTM) status
• Current SC Security Clearance (or eligibility to obtain it)
• CREST CRT / Cyber Scheme CSTM or equivalent certification
• OSCP or equivalent practical penetration testing certification
• Experience with API, mobile or wireless security testing
• Scripting or automation experience using Python, PowerShell or Bash

Why Join Citation Cyber?

We're building a consultancy where technical excellence, innovation and professional development go hand in hand.

When you join us you'll benefit from:

• Working for an NCSC CHECK provider and CREST member
• A varied mix of commercial, defence and public sector projects
• Funded training and industry certifications
• Clear progression towards CHECK Team Member, CHECK Team Leader and senior technical roles
• Hybrid and flexible working
• A collaborative technical culture where knowledge sharing is encouraged
• Opportunities to contribute to research, tooling and new service development
• Competitive salary and benefits

About You

You're passionate about offensive security and enjoy solving complex technical challenges. You produce high-quality work, communicate clearly with clients and are always looking to improve your skills.

Whether you're already delivering CHECK assessments or you're looking to achieve CHECK status in the near future, you'll be joining a team that will support your professional development and provide exposure to challenging and rewarding engagements.