Penetration Tester

Job description

We are seeking a Penetration Tester to join a growing Offensive Security team within a specialist cyber security consultancy. This is an exciting opportunity to join at a time of significant investment and growth, helping to strengthen existing testing services while contributing to the development of new capabilities across areas such as Red Teaming, Operational Technology (OT), Threat-Led Security Testing and emerging technologies.

The successful candidate will play a key role in delivering penetration testing engagements, supporting process improvement initiatives, and helping to build a scalable and mature testing function. This position offers excellent opportunities for professional development, certification support and future progression into senior or leadership positions

.
JOB ROLE - PENETRATION TEST

ER
LOCATION - LONDON (OCCASIONAL ON-SITE WO

RK)
SALARY - £40,000-£45,000 + BENE

FITS
Key Responsibil

• ities
  Conduct vulnerability assessments and penetration testing engagements a

cross:
Internal infrast

ructureExternal infrast

ructureWeb appli

cationsNetworks and

• systems
  Perform configuration and build reviews using recognised security frameworks and ben
• chmarks.Produce clear, concise and actionable technical reports detailing findings, risk ratings and remediation recommen
• dations.Utilise industry-standard security testing tools including Burp Suite, Nessus, Metasploit, Nmap, Wireshark and related techn
• ologies.Work directly with clients and stakeholders, presenting findings and providing remediation guidance where r
• equired.Support the continuous improvement of testing methodologies, processes and docume
• ntation.Assist in creating and maintaining standard operating procedures, testing guides and knowledge-sharing ma
• terials.Collaborate with wider cyber security teams to support service development and research init
• iatives.Contribute to research and development activities across new security testing disciplines and techn
• ologies.Participate in occasional out-of-hours and on-site engagements where client requirements

dictate
Required Skills & E

• xperience
  Minimum 2–3 years' experience in penetration testing, vulnerability assessment or offensive
• security.Experience c
• onducting:Internal and external infrastructu
• re testingWeb application securi
• ty testingSecurity assessments
• and auditsVulnerability identification and
• validationStrong understanding of networking concepts, protocols, routing and firewall tec
• hnologies.Experience working with Windows, Linux and macOS env
• ironments.Familiarity with security assessment tool

s such as:

Burp

SuiteNessu

sMet

asploitNm

• apWireshark
  Experience producing high-quality technical reports and client-facing do
• cumentation.Excellent communication and stakeholder manage
• ment skills.Strong organisational skills and ability to manage workload in
• dependently.Comfortable working in a consultancy or client-facing
• environment.Eligible to obtain UK Securit

y Clearance.
Desirable Skills & C

• ertifications
  CREST CRT, CPSA, CCT or equivalent
• certification.OSCP or similar offensive security
• qualification.Cyber Scheme
• accreditation.CHECK Team

Member status.

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full-time jobs

Published at

05-08-2026

Profession type

ICT

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English