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Integrity360 Sweden • Dublin, Leinster, Ireland
Role & seniority: Senior Penetration Tester (5+ years real-world experience), consultancy mindset with tutoring/mentoring responsibilities.
Stack/tools: Proficient in web, infrastructure, cloud, AD, and mobile testing; manual pentesting beyond automated tools; development/code review in C/C++, C#, VB.NET, ASP, PHP, Java, Python or Ruby; strong Unix/Windows and networking security; familiarity with hosting/cloud environments, SIEM/defensive tech, and security auditing tools; ability to develop custom scripts/tools for vulnerability identification.
Perform advanced manual penetration tests and security assessments across diverse environments (web, mobile, infra, cloud, AD).
Produce high-quality reports and executive summaries; present findings clearly to clients and internal stakeholders.
Mentor junior/mid-level testers, contribute to internal methodologies/tools, and support cross-team delivery and pre-sales activities.
5+ years of professional security testing experience; strong manual testing expertise.
Broad security knowledge: networks, applications, cloud hosting, SIEM/defensive tech, security auditing.
Development/scripting ability and code/architecture review skills; excellent written and oral communication.
Certifications (e.g., OSCP, OSCE, OSEP, CREST) or equivalent; security clearance or local vetting as required.
Ability to travel onsite to client environments; proactive, independen
About Us Integrity360 is the largest independent cyber security provider in Europe, with a growing international presence spanning the UK, Ireland, mainland Europe, Africa and the Caribbean. With over 700 employees, across 12 locations, and six Security Operations Centres (SOCs)—including locations in Dublin, Sofia, Stockholm, Madrid, Rome, Naples and Cape Town—we support more than 2,500 clients across a wide range of industries.
Over 80% of our team are technical experts, focused on helping clients proactively identify, protect, detect and respond to threats in an ever-evolving cyber landscape. Our security-first approach positions cyber resilience as a business enabler, empowering organisations to operate with confidence.
At Integrity360, people come first. We invest heavily in learning, development and progression, fostering a dynamic culture where innovation, collaboration and continuous growth are at the heart of what we do. If you're ready to take your cyber security career to the next level, we’d love to hear from you.
Role Overview We’re looking for a Penetration Tester with at least 5 years of real-world professional experience, fully independent, with consultancy and tutoring skills and experience. In this role, you’ll support and deliver testing projects (web, infra, cloud, AD, and mobile and not limited to), guided by experienced technical leaders. You’ll be involved in pre-sales activities, travelling onsite on customer environments and delivering high quality services. Job Role / Responsibilities As a Senior Security Tester, you will deliver advanced penetration testing and security assessments across a wide range of environments and technologies. You will also contribute to internal capability development, collaborate with other departments, and represent Integrity360 in client engagements and technical forums. This role blends deep technical expertise with excellent communication and documentation skills.