Penetration Tester

Citation Cyber; Guildford; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Hybrid working

Training & Certifications

Competitive salary & benefits

Job summary

Citation Cyber in the United Kingdom is seeking a Security Consultant to join a hybrid team delivering penetration testing across client environments. You’ll identify vulnerabilities, report findings and advise on remediation while collaborating with clients and colleagues.

The role emphasizes strong technical reporting, offshore and on-site collaboration, and continuous learning, with opportunities for career progression toward CHECK-related roles and leadership within a supportive security

Qualifications

• Commercial penetration testing experience in a consultancy or equivalent.
• Strong reporting skills and ability to convey findings clearly.
• Experience in infrastructure and web application testing.
• Good knowledge of Windows, Linux, AD and cloud security testing.
• Proficiency with standard pentesting tools and methodologies.

Responsibilities

• Deliver penetration testing across client environments, identifying vulnerabilities.
• Produce clear, high-quality technical reports with remediation guidance.
• Present findings and recommendations to clients and stakeholders.
• Support vulnerability validation, re-testing and client communication.
• Contribute to internal tooling, research and knowledge sharing.

Skills

Penetration Testing

Technical Reporting

Windows & AD

Cloud Security Testing

Security Tools

Client Communication

Test Methodologies

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.