Penetration Tester

Hackajob Ltd; Knutsford, Manchester; On-site; GBP 61,000 - 101,000; Full time

Job summary

Hackajob Ltd. is seeking a Penetration Tester to join its security testing team, delivering high-quality assessments across multiple projects. The role collaborates with stakeholders to translate findings into actionable mitigation actions.

Based in Knutsford or Manchester, the position carries leadership responsibilities that may involve guiding colleagues or leading a small team. The successful candidate will bring CREST or equivalent qualifications (or be working towards one) and experience

Qualifications

• Experience delivering end-to-end penetration testing across web, network and mobile environments.
• Engage with stakeholders, contribute to SoWs and produce clear security reports.
• Desirable participation in bug hunting, Hack The Box, CTFs or hackathons.
• Exposure to client testing and working to project timelines.

Responsibilities

• Identify, validate and clearly communicate vulnerabilities before exploitation across web, network, mobile and client apps.
• Develop and execute assessments and threat models using pentesting tools and techniques.
• Communicate findings and remediation guidance to stakeholders through reports.

Skills

Penetration testing

Stakeholder engagement

Security reporting

Leadership

Threat modeling

Education

CREST qualification (or equivalent)

Job description

Salary: £61,000 - 101,000 per year

Requirements

• Were looking for someone who holds a CREST qualification or equivalent, or is working towards one.
• You should have experience delivering end-to-end penetration testing across web, network and mobile environments.
• We value experience engaging with stakeholders, contributing to Statements of Work (SoW) and producing clear, actionable security reports.
• Desirable experience includes participation in the penetration testing or wider security community, such as bug hunting, Hack The Box, CTFs or hackathons.
• Exposure to client or thick application testing and experience working to agreed project timelines are desirable.
• We welcome an interest in emerging areas such as AI security testing, and familiarity with scripting or programming; no specific languages are required.
• You may be assessed on relevant critical skills, including risk and controls, change and transformation, business acumen, strategic thinking, digital and technology, and job-specific technical skills.
• For this Assistant Vice President role, we expect well-developed professional knowledge and skills, sound risk and control awareness, and the ability to communicate complex information and influence stakeholders.
• If you have leadership responsibilities, we expect you to set objectives, coach colleagues and support performance and reward decisions. People Leaders are expected to demonstrate our LEAD behaviours: Listen and be authentic, Energise and inspire, Align across the enterprise, and Develop others.

Responsibilities

• Identify, validate and clearly communicate security vulnerabilities before they can be exploited, through assessments of web, network, mobile and client applications.
• Develop and execute assessments, audits and threat models using penetration testing tools and techniques to identify vulnerabilities in our systems, applications and servers.
• Communicate findings, recommendations and remediation guidance to stakeholders, including senior stakeholders, through comprehensive reports and documents.
• Work with stakeholders and IT teams to identify emerging cyber-attack techniques, tools and technologies, and support the development of penetration testing methodologies.
• Work with stakeholders to understand security requirements and controls in business processes, applications and services, helping strengthen our overall security posture and assurance.
• Identify emerging vulnerabilities, exploit code and cyber-attacks to develop testing methodologies and assurance activities.
• Advise and influence decision-making, contribute to policy development, and take responsibility for operational effectiveness.
• Lead complex work or collaborative assignments, guide team members, and identify when additional areas of specialisation are needed.
• Consult on complex issues, advise People Leaders on escalated matters, and identify ways to mitigate risk and strengthen controls, policies and procedures.
• Analyse data from multiple internal and external sources to solve problems creatively and effectively, and communicate complex or sensitive information to stakeholders.
• Collaborate across functions and business divisions to support organisational objectives and stay informed about business activity and strategy.
• Demonstrate our values of Respect, Integrity, Service, Excellence and Stewardship, and our mindset to Empower, Challenge and Drive.

Technologies

• AI
• Support
• Mobile
• Network
• Security
• Web

More

Were seeking a Penetration Tester to join our collaborative security testing team and help protect our organisation and clients. The role delivers high-quality assessments across a range of projects and works closely with stakeholders to turn findings into meaningful action. The position is based in Knutsford or Manchester. This is an Assistant Vice President role; depending on the positions leadership responsibilities, the work may involve leading a team or guiding colleagues through collaborative assignments.

last updated 40 week of 2026