Penetration Tester in Leatherhead

POSITION DETAILS:

Position Title: Penetration Tester

Reports to (POSITION): Head of Assurance Testing

Team: Assurance Testing

Department: Cyber Consulting

Grade (If Applicable):

PURPOSE OF JOB:

Bytes is a CREST-certified penetration testing organisation with ambitious growth and expansion plans. We are looking for motivated individuals to join our testing team and work with a wide range of customers across all aspects of penetration testing and Cyber Essentials. This role offers the opportunity to be part of a highly skilled and collaborative team, delivering high-quality testing and security consulting services in real-world environments.

We welcome candidates with either a broad set of skills or a focus on specific areas within penetration testing. Whether you're experienced or looking to grow, this role is ideal for anyone who has been providing penetration testing or security consulting services and wants to gain further experience, achieve new certifications, or simply work with a great team.

You will be working under the guidance of a team leader or Head of Assurance testing and will be actively involved in client engagements, while also having dedicated time to develop your skills and work towards industry-recognised certifications. A willingness to learn, adapt, and continuously improve is essential. Just as important is a mindset focused on collaboration, sharing knowledge, supporting peers, and contributing to a culture of growth.

In addition to hands‑on testing work, you will also collaborate with the sales team to ensure appropriate scoping of new business opportunities. This includes providing technical input and helping to create accurate, well‑defined proposals that set the foundation for successful project delivery.

This is an excellent opportunity for someone who is passionate about cybersecurity and is looking to progress their career as a penetration tester within a forward-thinking and supportive environment.

KEY RESPONSIBILITIES:

• Perform assurance testing and cybersecurity assessment assignments aligned with expertise, covering infrastructure, web applications, APIs, mobile applications, red team engagements, cloud configuration reviews, Cyber Essentials and Cyber Essentials Plus assessments, delivering high‑quality security services that provide real value to customers.
• To work under the direction of your team leader or head of Assurance testing on internal projects, research, development, as well as increasing the effectiveness of our services by bringing new ideas and ways of working.
• Collaborate with the sales team to support the scoping of new business opportunities, including penetration testing, Cyber Essentials, Cyber Essentials Plus and related assurance services, contributing to proposals that enable successful engagement delivery.
• Manage customer engagements to ensure high‑quality and timely deliverables.

INDIVIDUAL RESPONSIBILITIES:

• Deliver penetration testing, Cyber Essentials and Cyber Essentials Plus services to customers as part of a team.
• Provide technical assistance and support to colleagues, leveraging your expertise to foster knowledge sharing, collaborative problem‑solving, and a productive team environment.
• Conduct quality assurance reviews of reports and proposals to ensure accuracy and adherence to industry standards.
• Collaborate with the team to maintain and update the vulnerability database, ensuring it stays accurate and comprehensive.
• Support scoping calls and collaborate with account managers to define penetration testing, Cyber Essentials and Cyber Essentials Plus requirements, provide technical input, and ensure seamless client interactions and service delivery.
• Improving knowledge and capability through both on the job learning and self‑study, preparation for exams and bringing an enthusiastic can‑do attitude.
• Delivering high quality engagements to customers and delivering real value to them.

WIDER TEAM NETWORK

Internal

• Other Cyber Consulting teams
• Sales teams
• Pre‑Sales teams
• Security team
• IT

External

• Customers
• Partners / Suppliers

QUALIFICATIONS, EXPERIENCE, & SKILLS:

Educational Qualifications:

• BSc degree or 3 years relevant experience

ESSENTIAL / DESIRABLE

Professional Qualifications

• Any reputable penetration testing qualification (OSCP, GPEN, Security+, CPSA, CEH, CRT)
• Cyber Essentials Assessor

ESSENTIAL / DESIRABLE

Years of Experience

• 1 to 3 years penetration testing / security experience
• 1 year penetration testing consulting experience

ESSENTIAL / DESIRABLE

Other Requirements

• Ability to pass BPSS or HMG SC vetting requirements.
• Ability to adapt to a fast‑moving security landscape and keep pace with latest thinking.
• Strong customer focus - able to meet the demands of internal and external customers.
• Excellent communication skills - providing verbal and written communication that are outstanding to your team leader and Head of Assurance testing as well as other stakeholders including customers.
• Can make decisions that are well informed and timely with some direction and guidance.
• Good time management, can handle conflicting priorities, and deliver excellent levels of quality.

ESSENTIAL

CORE Competencies & Skills - BASED ON POSITION AND GRADE

(IF APPLICABLE)

• Cyber Security, Vulnerability analysis and penetration testing skills and experience
• Business acumen
• Strong communicator
• Friendly and approachable
• Calm and considered
• Strong code of ethics and morals

MEASURES & GOALS

OBJECTIVE

MEASURE

FREQUENCY

Quality output / attention to detail - Feedback from QA team and customer engagements - Quarterly

Positive engagement with management, stakeholders, peers, and customers - Feedback whether positive or negative from personnel engaged with - Quarterly

Positive engagement with team and demonstration of team skills - Feedback from the team - Quarterly

#J-18808-Ljbffr