{"@context":"https://schema.org","@graph":[{"@context":"https://schema.org/","@type":"JobPosting","@id":"#jobPosting","title":"Junior Penetration Tester

Director Of People & Operations | Workforce Optimisation Consultant

Company Mission and Vision

AI-Augmented Pentesting : Human Expertise Where It Matters Most.

At OnSecurity, we're redefining cybersecurity through AI-augmented penetration testing - the perfect blend of AI efficiency and human ingenuity.

We deliver comprehensive, CREST-approved testing that saves time and money without compromising quality. Our all-in-one platform combines AI-driven automation with expert human insight to provide faster, more accurate results.

The outcome? Streamlined testing, actionable intelligence, and security at scale.

We're revolutionising how organisations protect their digital assets helping businesses stay secure, resilient, and one step ahead of threats.

Working Hours and Location

We are based in the UK with employees working remotely. Some roles may have hybrid preference depending on the team. You can ask us about the best working hours and work setup in the recruitment process if there's something that's important to you. We try to be as flexible as possible.

All we ask is that everyone is online between our core hours of 10 : 00-16 : 00 (UK time) so that everyone overlaps for the majority of the day. It's up to you and your manager to find the right schedule that works for you and your team.

Role Purpose

We're looking for an enthusiastic Junior Penetration Tester to join our growing team.

This is the ideal opportunity for someone who's passionate about cybersecurity, curious about how systems break, and eager to build a career in ethical hacking.

You'll be mentored by experienced testers, work across real-world environments, and gain exposure to multiple testing disciplines from web and API assessments to infrastructure and cloud reviews.

Role Importance, Responsibilities and Impact

What you will be doing :

• Delivering remote penetration tests under supervision, across web, infrastructure, and API scopes.
• Following OnSecurity's methodologies to produce accurate and professional reports.
• Supporting the improvement of internal tooling and automation.
• Participating in knowledge-sharing sessions and internal research projects.
• Building a strong foundation in ethical hacking and testing methodologies.

You've got a genuine passion for ethical hacking and security.

You've experimented with security tools like Burp Suite, Nmap, or Metasploit.

You're eager to learn, detail-driven, and proactive.

You have some basic scripting or coding experience (Python, Go, Bash, etc.).

You thrive in a collaborative, remote environment.

• A competitive compensation package . The salary range for this role is roughly up to £35k annually , depending on experience.

• Work at one of the fastest-growing Cyber Security scale-ups, which are revolutionising pentesting.

• A clear progression plan. We want you to keep growing. That means trying new things, leading others, challenging the status quo and owning your impact, always with our complete support.

• Flexibility : We promote life-work balance at OnSecurity. We encourage everyone on our team to enjoy their life and ensure they have the balance they need to reach their full potential.

• Work where you work best. We're a distributed team. If you live in Bristol, we have a hybrid approach that may work for your team. Otherwise, we are remote and so we build our ways of working around this. Other benefits :

• 30 days of paid annual leave, plus bank holidays

• Company Pension Scheme

• Private Health Insurance with Vitality

• Employee Assistance Program (EAP)

• Group Life Assurance (x4 salary)

• Enhanced Maternity, Paternity, and Adoption Leave

• Paid study leave for employees to level up their skills

• Mentorship and Coaching

• Annual Performance reviews and recognition for high performance

• Regular socials and activities, online and in-person.