Cyber Security Engineer in London

watchTowr is the Preemptive Exposure Management capability trusted by Fortune 500 companies and critical infrastructure providers. By combining proactive threat intelligence, real attacker telemetry, and automated red teaming, watchTowr continuously identifies and validates real exposure so security teams can outrun real‐world threats. When exploitation happens in hours, watchTowr delivers what no one else can: time to respond.

We are a global team of operators, researchers, and engineers who have spent years thinking like attackers – and we are now building the technology to stop them. Our work is recognised across the industry, with original vulnerability research from watchTowr Labs and innovations like Instinct and Attacker Eye shaping the future of cybersecurity. Backed by $29M in funding, recognised by Gartner, and scaling fast across the globe, we are in a high‐growth phase of our journey. We are a young, high‐energy, and research‐driven team, obsessed with building world‐class technology – and we want exceptional people to join us.

We are looking for an ambitious Cyber Security Engineer to join us and work with the watchTowr Labs to expand our offensive security capabilities, in our mission of helping organisations understand how they could be compromised in real‐time. The role is based in the UK.

Sounds great – what will I do?

• Offensive Security Innovation: Lead R&D projects that push the limits of offensive security, replicating adversary tactics at scale to uncover vulnerabilities and provide actionable insights.
• Architecting Scalable Solutions: Design and implement cloud‐based, scalable infrastructures that underpin our cutting‐edge offensive security tools, ensuring they perform efficiently under high‐demand conditions.
• Cloud‐Driven Engineering: Utilise cloud‐native services to develop resilient, big data solutions that form part of our offensive security & data processing capabilities.
• Data Pipeline Development: Engineer and maintain robust data pipelines that seamlessly process attack surface & offensive security data, delivering real‐time insights to enhance our Red Team capabilities.

Sounds perfect to me, what specifics are you looking for?

Ideal Traits

We would love to talk to you if you have at least 2‐5 years of software engineering experience, together with the following traits:

• Red Team and Offensive Security Expertise: Experience or exposure in building and deploying offensive security solutions, with a deep understanding of adversary tactics, techniques, and procedures (TTPs).
• Cloud Infrastructure Experience: Proven experience in architecting and scaling cloud‐based solutions to support intensive data processing and real‐time threat analysis.
• Innovative Mindset: A proactive approach to security research and problem solving, with the ability to navigate complex, ambiguous challenges and deliver practical solutions.
• Programming Skills: Proficiency in Python, Go, or similar languages, with a strong emphasis on building scalable, maintainable code.

Bonus Experience

It'll also be awesome if you:

• Have worked on and/or contributed to open source projects.
• Have experience working with significant amounts of data and handling 'big data' for security analysis.
• Have a strong hands‐on understanding of offensive security (e.g., red teaming experience, vulnerability research, or capture the flag competitions).
• Understand common vulnerabilities and weaknesses on application security, network security, or cloud security.

What's in it for me?

• Competitive compensation - we believe that hard work, skills and ambition should be fairly compensated.
• Meaningful role in a company - You will be a key and early contributor to a fast‐growing cybersecurity business that helps protect some of the world's largest enterprises.
• The best tools and powerful kit - we enable you with the tools to effectively fulfil your role.
• Endless opportunities – we are in a high‐growth phase of our journey, and plan to promote from within as we scale.
• Work with cyber security experts – we are solving cutting‐edge industry‐wide cyber security challenges with some of the world's most advanced organisations.

watchTowr is proud to be an Equal Opportunity Employer. At watchTowr, we're dedicated to fostering an inclusive, respectful, and diverse environment where every individual is recognised for their talent and potential. Our hiring decisions are guided by your capabilities, experience, and what you bring to the role - not by unrelated personal attributes. We have a zero‐tolerance approach to any form of discrimination or harassment. This includes - but isn't limited to - discrimination based on race, ethnicity, religion, colour, nationality, sex, sexual orientation, gender identity or expression, age, disability, pregnancy or parental status, veteran status, or any other characteristic protected by law. We actively encourage people from all backgrounds to apply. Even if you don't tick every box in the job description, we'd still love to hear from you.