Senior Penetration Tester

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, 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. 

Job Role / Responsibilities

This is a full-time position with the Integrity360 office in Dublin, Ireland. The position is responsible for performing all forms of complex technical activities (including the Internal / External Network, Applications, Cloud, Mobile, etc.). These assessments will occasionally be done at the client site, primarily in Ireland, UK or within Europe. Proficiency in communication is essential, both written and verbal, as well as the ability to convey complex technical information to key international clients.

Primary Duties/Responsibilities include:

• Perform in-depth penetration tests across applications, infrastructure, cloud and mobile platforms.
• Tutoring junior team members in the Dublin Office
• Execute zero-knowledge black-box, grey-box and white-box penetration tests of specific areas within the enterprise.
• Perform tests and assessments in cloud, including but not limited to AWS, Azure, GCP, etc.
• Perform red team and purple team exercises.
• Perform security reviews of servers, network devices, architecture and application designs.
• Act as an escalation point for team members regarding project-related issues.
• Deliver pre-sales support, including project scoping, estimations, technical assistance via calls, meetings, and presentations with key clients.
• Enhance Integrity360's security offerings, refining methodologies, reporting standards, and educational materials.
• Represent Integrity360 at international events, forums or training events.
• Demonstrate the ability to be an industry expert.

Required Skills / Experience

• 5+ or more years’ experience in penetration testing or red team operations, including testing critical functionality, banking systems and more.
•  Manual penetration testing experience above and beyond running automated tools.
  
• Expertise in AWS, Azure, and cloud-native technologies, including VMs, containers, and infrastructure as code.
• Previous experience as a Team Lead, Subject Matter Expert, or similar role.
• Experience in Red Teaming, Adversary Emulation or Assumed Breach exercises.
• Knowledge of C2 frameworks, Red Team tooling, Malware development and Evasion tactics.
• Experience in testing ICS, SCADA, mainframes, containers, hardware appliances,
• Excellent understanding of firewalls, proxies, iptables, AVs and EDR products, VPNs, IDS/IPS, and various networking concepts.
• Knowledge of wireless technologies, mainly RF, Cellular, NFC, Bluetooth technology.
• Experience in testing OSX / iOS and Android devices.
• Excellent communication and presentation skills in front of key clients.
• Experience in developing custom security tools and scripts.
• Fluency in one or more programming or scripting languages: Java, Python, C/C++, C#, .NET, ASP, PHP,

Certifications/Qualifications

• One or more industry leading certification (OSCP, CRTE, CRTO, OSCE, OSWP, ARTE, CPTS, etc.)
• CHECK Team Leader or equivalent is a plus.
• Computer Sciences, IT or Cybersecurity related degree is a plus.
• Candidate must be a resident of Dublin or be willing to relocate to the Sandyford/Dublin area.

Integrity360 Employee Benefits (Ireland) 

At Integrity360 we aim to reflect what’s important through the benefits we offer. We survey our people regularly and encourage discussions around these tops so we can understand what really makes a difference. Our benefits priorities are physical, mental, and financial wellbeing.

Mental & Physical wellbeing benefits:

• Irish Life health insurance
• Dental cover
• Occupational Health provided by Cognate
• Bike To Work scheme
• Tax Savers commuter

Financial wellbeing:

We guarantee that every employee will have their pay reviewed at least one every year, if not more regularly. We aim to pay within the market range for all roles and keep pace with inflation on average.

What we offer:

• Twice yearly salary reviews
• Contributory pension
• Letter of Wishes income protection 
• Letter of Wishes Death-in-Service cover.

Other benefits include:

• 25 days’ annual leave, 1 extra day gained per year of service up to 28 days. Options to carry over 5 days.
• Our L&D program, we work with various platforms including Cybrary, Udemy, Preply, Pluralsight, Swift and HTB ensuring our people are up to date with their industry knowledge. Offering opportunities to further upskill and gain industry leading certifications.

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