Penetration Tester - Infrastructure in Stevenage

As a Penetration Tester, with a focus on Infrastructure testing, you will perform formal and comprehensive penetration testing assessments, producing full written reports to appropriate standards and within agreed deadlines. In addition, you will support with client pre-engagement activities, including scoping and proposal drafting, as well as researching infrastructure and application vulnerabilities, following responsible disclosure, and sharing such findings within the team.

Responsibilities

• Perform formal and comprehensive infrastructure and other penetration testing assessments where appropriate and required.
• Provide well‑written, concise, technical and non‑technical reports in English.
• Perform vulnerability assessments and provide findings with remediation actions.
• Support with various client pre‑engagement interactions, including scoping activities and proposal drafting.
• Manage and deliver penetration testing project activities within strict deadlines.
• Research infrastructure and other such components within the wider team to identify new vulnerabilities and follow responsible disclosure.
• Coach and mentor Graduate and Junior penetration testers where appropriate.
• Support the Marketing team with the development of content (including, but not limited to: Blogs, Social Media Posts, and Articles) to help raise the profile of Bulletproof's Penetration Testing and other services.
• Support the QA process to ensure high quality client reports are delivered in accordance with applicable Service Level Agreement (SLA).
• Any other appropriate job duties in line with the associated skill and experience of the post holder.

Skills & Experience Required

• Proven industry experience in infrastructure and a variety of other penetration testing assessment types.
• Deep knowledge of assessing both Windows and Linux environments, including strong knowledge of Active Directory and wireless technologies.
• Deep knowledge of various Operating Systems and network principles.
• Knowledge of assessing cloud and hybrid environments (AWS and Azure).
• Strong understanding of OWASP, PTES and MITRE ATT&CK framework.
• Knowledge of how modern solutions are designed and deployed across different platforms.
• Ability to program or script in your preferred language.
• Relevant security qualifications (such as OSCP, CREST CRT, OSEP, CCT INF).
• Good knowledge of virtualisation.

Nice to have

• Ability to create and implement tactics techniques and procedures (development of scripts, tools, and methods) that can be used in red team engagements (including C2 framework management).
• Knowledge in preparing and launching social engineering campaigns.
• Involvement in previous research projects, tool development and training delivery.

Personal Attributes

• Excellent spoken and written communication skills with strong attention-to-detail and accuracy.
• A passion for security and networks.
• Analytical and problem‑solving skills with a can‑do attitude and the ability to think laterally.
• Self‑motivation with a commitment to continued development.
• Ability to work independently and as part of a team.
• Influencing and negotiation skills with the ability to build relationships at all levels.
• Willingness to learn.

Benefits

• Birthday holiday
• Discounted Private Medical Insurance
• Gym Membership
• VITO days - X2 paid volunteer days
• Enhanced Family Related Leave Pay
• Standard Life Salary Sacrifice Pension
• Social Events

WorkNest is an equal opportunity employer. We celebrate diversity and are committed to fostering an inclusive environment for all employees.