Are you our next expert pen tester?

Zoonou is one of the UK’s leading software testing companies, 100% employee-owned and a Certified B Corporation®.

We don’t just test software - we help our clients create better digital experiences that work for everyone. Because we’re co-owners, we all have a genuine stake in how we do it.

We’re growing sustainably, balancing profit with purpose, and building a company that puts people first: our clients and each other. At Zoonou, the work matters. The way we do it matters even more.

The role

We’re looking for someone with strong technical foundations - maybe you’re a Computer Science graduate, someone with IT or networking experience, or have a technical skill set who wants to pivot into cybersecurity.

You don’t need to be an expert in penetration testing yet - we’ll provide the training, mentorship, and hands-on experience to help you grow those skills and build a rewarding career.

If you’re curious, enjoy solving technical challenges, and want to help clients make their digital products safer, this is your chance to start a career in a fast-growing field.

What you’ll do as our Junior Security Test Analyst

You’ll help clients understand how secure their applications are, identify potential vulnerabilities, and communicate findings in a way that makes a real difference.

A typical day might involve:

• Planning and scoping projects, understanding requirements, and assessing risks.
• Exploring client web applications, gathering information, and identifying potential vulnerabilities.
• Running manual and automated tests using the OWASP Top 10 as a guide.
• Documenting and reporting findings clearly, escalating critical issues when necessary.
• Working directly with clients to explain issues and next steps.
• Collaborating with colleagues to share knowledge, improve testing approaches, and learn new tools.

Every project is different - you’ll rotate between hands-on testing, collaborative problem-solving and guiding clients through findings. Along the way, you’ll grow your expertise, learn from experienced team members, and play a real part in helping clients strengthen their digital security - all within a supportive, flexible, and ambitious environment.

A little bit about your skills, experience and behaviours

You don’t need to have all the skills of an experienced penetration tester - what matters most is curiosity, a strong technical foundation, attention to detail, and the ability to communicate clearly.

Here’s what we think would set you up for success:

• A solid foundation in IT, networking, or computer science.
• A natural curiosity and enthusiasm for exploring technology and solving problems.
• Ability to translate technical concepts into plain language, making complex security issues easy to understand for clients and colleagues.
• Organised and detail-oriented, with the ability to manage your own workload while supporting the team.
• A desire to learn and grow your skills in cybersecurity, keeping up to date with trends and best practices.

Nice-to-have skills:

• Previous testing or security experience.
• Coding or scripting knowledge.
• Engagement with the cybersecurity community (blogs, forums, events, or meetups).

We’re looking for the best talent to join us on our journey; we’re also seeking people who demonstrate behaviours aligned with our core values – observance, curiosity, positivity, and one-team. At Zoonou, how you do things matters as much as what you do.

Working hours and location

• Hours: Monday to Friday, 09:00 – 17:30
• Location: Remote, office-based or hybrid.

What we offer

Just a few reasons why you’ll love working here:

• Employee ownership bonus - the first £3,600 of our EO bonus is tax free.
• Enhanced parental leave - we support our parents with advanced maternity and paternity cover.
• Paid volunteer days - we each get two days paid leave to volunteer our time for causes that we personally care about.
• Celebrate your way - we can swap bank holidays to celebrate significant religious holidays such as Diwali, Eid or Passover.
• Up-to 35 days holiday - we get 32 days holiday (including bank holidays) and an extra day from years 2-5.
• Buy and sell holiday - every year, we can buy or sell up-to 5 days of annual leave.
• Training budgets and professional development plans that actually get used.
• Hybrid working (Following an initial 2-week onboarding at our head office).
• Funded mental health support.
• We have a range of other benefits we can take advantage of including a cycle-to-work scheme; a tech scheme; discount vouchers and season ticket loans.

Head over to our careers page to learn more about our culture at Zoonou.

Diversity, equity and inclusion

At Zoonou, we welcome applications from all sections of society. We’re dedicated to building a diverse workplace where everyone feels included, valued, and able to do their best work.

You don’t need to tick every box to apply – if you’re excited about the role and our company, we want to hear from you.