Role & seniority: Offensive Security Tester (Red Team), mid-level to senior track in a rapidly expanding scale-up

Stack/tools: industry-standard security testing tools + in-house tools; manual reviews; OSCP or CRT; OO programming (Python, C++, C#, Java); diverse OS and networking tech

Top 3 responsibilities

Manage client engagements and plan/red-team tests
Perform security testing on networks and web apps; report findings
Conduct manual reviews to uncover issues; aim to outmaneuver defenders in Red Team exercises

Must-have skills

Degree (2:1 or higher) from Russell Group/top-tier university (CS/Engineering/Physics/Math); MSc/PhD advantageous
OSCP or CRT certification
Commercial experience in Offensive Security, Red Team testing, or Penetration testing
Strong understanding of OS, networking, and low-level concepts
Excellent written and verbal communication
Ability to code in an OO language (e.g., Python, C++, C#, Java)

Nice-to-haves

MSc/PhD
Broader security domain interest; additional certifications
Location & work type: London / remote-first with occasional quarterly visits to the London office; remote onboarding and mostly home-working

Note: Salary up to £50k; remote working with monthly in-person requirement; continuous training and paid certifications.

Full Description

Offensive Security Tester (Red Team) London / WFH to £50k

Opportunity to progress your career as an Offensive Security Tester at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; you'll be working on Greenfield projects, collaborating with and learning from a hugely talented team.

Your role

As an Offensive Security Tester you will manage client engagements, perform security tests and report findings; you'll be using industry standard combined with in-house developed tools as well as carrying out manual reviews to discover any issues with customer infrastructure and web applications.

You'll be pro-active and will have the opportunity within Red Team testing to try anything and everything to outmanoeuvre the defenders and gain access to customer networks.

WFH Policy

There's a remote interview / onboarding process and the ability to work from home for the majority of the time with only occasional visits to the London, City offices (i.e. once a quarter).

About you

You're degree educated, having achieved a 2.1 or above from a Russel Group or top tier world university - Computer Science, Engineering, Physics or Mathematics; MSc or PhD advantageous
You're OSCP or CRT certified
You have commercial experience with Offensive Security, Red Team testing or Penetration testing
You have a keen interest in Cyber Security and understanding of key concepts and protocols
You can code with any OO programming language (e.g. Python, C++, C#, Java)
You have experience of using different operating systems and networking technologies
You have a good understanding (and interest in) low level concepts including operating systems and networking
You have excellent written and verbal communication skills

What's in for you

As an Offensive Security Tester (Red Team) you will receive

Salary to £50k
Remote working (once a month in London)
Continuous training and career development including paid for certifications

Apply now to find out more about this Offensive Security Tester (Red Team) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Offensive Security Tester Red Team