Senior Infrastructure Penetration Tester

TN United Kingdom; London; On-site; GBP 50,000 - 90,000; Full time

Job summary

An innovative consultancy is seeking a skilled penetration tester to join their dynamic team. In this exciting role, you will empower organizations to enhance their digital resilience by identifying vulnerabilities and providing expert consultancy. Collaborate with a diverse team of professionals while leading penetration tests and developing solutions that safeguard clients' assets. With a commitment to diversity and inclusion, this forward-thinking firm offers a supportive environment where your contributions will make a significant impact. If you are passionate about cyber security and eager to tackle complex challenges, this opportunity is perfect for you.

Qualifications

• 3+ years of experience in penetration testing or security consulting.
• Excellent verbal and written communication skills.

Responsibilities

• Lead penetration testing for infrastructure and applications.
• Provide cyber security consultancy to stakeholders.
• Produce high-quality technical reports for non-technical audiences.

Skills

Penetration Testing

Vulnerability Assessment

Network Security

Communication Skills

Critical Thinking

Scripting Languages

Education

Relevant Professional Certification

Chartership from Cyber Security Council

Tools

Nessus

Burp Suite

Metasploit

Job description

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Client:

Protection Group International

Location:

London, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

557ac253772a

Job Views:

3

Posted:

10.05.2025

Expiry Date:

24.06.2025

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Job Description:

We empower organisations and nations to counter digital threats. Our internationally acclaimed team of digital threat experts and thought leaders work at the cutting-edge of threat detection, continually scanning the horizon for next-generation risks. We use technology to support deep human insight, enabling us to build long-range resilience for clients.We are trusted worldwide by governments, global NGOs and corporations.

PGI is a global consultancy that helps organisations build digital resilience. We deploy our people to implement solutions on behalf of clients or to support them in developing their own capabilities.

Our Penetration Testers, work with organisations of all sizes and types to detect and remediate vulnerabilities help organisations identify where they lack sufficient protection. The team tests security of infrastructure and applications conducts IT Health Checks, and reviews IT configurations to identify gaps threat actors could slip through and make recommendations to safeguard their assets.

What you’ll be doing:

• Providing professional cyber security consultancy to internal and external stakeholders.
• Leading the delivery of PGI’s penetration testing for infrastructure testing.
• Collaborating on the design and delivery of new as well as existing service lines associated with offensive security assessments.
• Supporting and often leading technical pre-sales, proposal writing and client engagements.
• Coaching and supervising junior team members, including supporting their resourcing, development planning, mentoring and knowledge transfer.
• Analysing security data, identify patterns and addressing threats and vulnerabilities.
• Producing high quality technical reports which can explain detail using non-technical language so that non-technical stakeholders can grasp the severity of the vulnerability.
• Performing quality assurance and technical peer reviewing of project reports.
• Collaborating with colleagues on wider PGI internal or client projects.
• Proofreading and/or contributing to technical training/development material.
• Supporting technical delivery projects to achieve successful outcomes.
• Mentoring security consultants or clients by sharing your own knowledge and experience and overseeing the development of their skills and competencies.
• Participating in the development or delivery of exercises – such as CTF challenges.
• Providing accurate scoping of penetration testing opportunities to sales colleagues for new and existing clients.
• Supporting sales colleagues with client pre-engagement activities including, proposals, presales activities such as client presentations.
• Supporting marketing colleagues with subject matter expertise insight or development of security related content.
• Developing and maintaining technical skills and required certifications, using training platforms such as Hack The Box.
• Staying current with the latest cyber security trends, threats, and technologies.
  

On day one you will bring:

• Relevant professional certification, such as CCT inf or CSTL inf.
• Ideally, chartership from the Cyber Security Council with the title Principal or Chartered.
• Commercial experience in a penetration testing or security consulting role, a minimum of 3 years.
• Knowledge of operating systems, networks, and cloud platforms.
• A good understanding of network security and core networking protocols (TCP/IP).
• A good understanding of technical concepts such as: tunnelling traffic and setting your own IP.
• Experience in delivering penetration tests and vulnerability assessments for network infrastructure , applications, and cloud services.
• Excellent verbal and written communication skills, with the ability to present to clients.
• An initiative-taking approach who can manage time, schedules, and the ability to work to deadlines.
• Excellent critical thinking skills with a willingness to overcome problems and think outside-the-box or innovate.
• Experience with commercial security tools such as Nessus, Burp Suite and Metasploit.
• Ability to work independently and as part of a team, with a strong appetite for knowledge sharing collaboration.
• Knowledge and experience with scripting languages.
• Eligibility for security clearance.
• Self-motivation with a commitment to continued development.

Diversity, Equity and Inclusion at PGI

As a British company which operates internationally, we draw strength from the diversity of our people. Without our diverse team, we couldn’t do the work we do. We are involved in projects across 80+ geographies, our people speak 25+ languages and come from a variety of backgrounds. By hiring and cultivating a diverse, equitable and inclusive workforce, we can uphold values that enable every member of the team to thrive, while delivering novel solutions to novel problems.

Accessibility at PGI

Every individual has different requirements, so we are committed to implementing reasonable adjustments to mitigate physical and non-physical barriers in the workplace.

We strive to make the recruitment process as accessible as possible, but if you have any questions or concerns, please get in touch.

Please note: We are not accepting applications or speculative profiles from any recruitment agencies. If we require additional resource, we will reach out to you.