Red Team Operator Cyber Security

Client Server Limited; Greater London; Hybrid; GBP 65,000 - 80,000; Full time

Benefits offered by this job

Training & certifications

Career progression

Job summary

Client Server Limited in London is seeking a Red Team Operator to conduct adversary simulations and breach engagements for a range of clients.

The role combines hands-on offensive security with research, tooling, and documenting operations. You will mentor teammates and contribute to client debriefs.

You can work from home but must be commutable to London every 2-3 weeks; hybrid setup with ongoing training and career development.

Qualifications

• Experience in Red Team or offensive security with up-to-date tradecraft.
• Strong problem solving and critical thinking abilities.
• Solid understanding of OSI model, operating systems, and networking.
• Ability to read code and develop scripts or tooling to support engagements.

Responsibilities

• Conduct approved adversary simulations and red team engagements for diverse clients.
• Plan and execute operations within agreed rules of engagement.
• Build and manage red team infrastructure and tooling.
• Research emerging TTPs and adapt approaches when needed.
• Document operations, timelines and client deliverables, and mentor teammates.

Skills

Red Team

Offensive Security

Scripting

OPSEC

Threat Modelling

Windows

Linux

Cloud

Active Directory

Networking

Education

Bachelor's degree in a technical field

Job description

London, Greater London | £65k - £80k per year

Opportunity to progress your career at a rapidly scaling technology company that provides a fully managed IT service including security.

As a Red Team Operator you'll be conducting approved adversary simulation, red team and assumed breach engagements for a range of clients. You'll work with clients to scope objectives and threat scenarios, then plan and execute realistic operations within agreed rules of engagement.

The role combines hands-on offensive security with research, problem solving and operational tradecraft. You'll build and manage red team infrastructure, develop custom tooling, research emerging TTPs and adapt your approach when conventional techniques aren't effective.

You'll operate across Windows, Linux, networks, cloud and enterprise identity environments, with a strong focus on OPSEC, stealth, detection risk and controlled execution.

You'll use a broad range of industry standard, open source, commercial and in-house tooling across reconnaissance, web application testing, initial access, command and control, Active Directory, cloud and identity testing. You'll also modify existing tools or develop lightweight scripts and capabilities where standard tooling is unsuitable. Training will be provided on the organisation's in-house platform.

Beyond technical execution, you'll document operations and timelines thoroughly, contribute to client deliverables and support client facing debriefs. You'll work closely with engagement leads, technical teams and client stakeholders, while helping less experienced team members develop their skills through coaching and mentoring.

Location / WFH:

You can work from home, collaborating colleagues remotely but must be commutable to London every 2-3 weeks.

About you:

• You have strong experience in a similar Red Team / Offensive Security role and keep up to date with emerging adversary tradecraft, tooling and TTPs relevant to red team operations
• You have advanced problem solving and critical thinking skills
• You have a strong understanding of low level technical concepts: operating systems, networking, authentication protocols, endpoint controls, identity platforms and the OSI model
• You can read and understand code, identify security weaknesses and develop scripts or tooling to support red team objectives
• You understand that red team operations are not only about achieving technical compromise, but doing so in a controlled, realistic and professional manner, you're able to consider OPSEC, detection risk, logging, payload exposure, infrastructure management, attack path selection and the wider impact of your actions during an engagement
• You have excellent communication and collaboration skills and are comfortable sharing knowledge and mentoring others in the team
• You have a relevant technical degree form a top tier university (e.g. Russel Group, Oxbridge)

What's in it for you:

• Salary to £80k
• Continuous training and career development including paid for certifications
• Excellent career progression as the company scales