Penetration Tester Jobs in Northern Ireland

11 of 11 Penetration Tester Jobs in Northern Ireland

Principal Penetration Tester - CTL Infrastructure Cyber Security Belfast

Belfast, United Kingdom
Hybrid / WFH Options
Instil
At Vertical Structure (an Instil Company), we specialise in providing human-focused security and penetration testing services for web applications, cloud infrastructure and mobile applications. The Role We are looking for a CTL (Infrastructure) to join our dynamic team based in Belfast. As a Pen Tester, you will be part of the delivery team, conducting penetration tests … validate infrastructure and technologies, including cloud-based systems continuously incorporating new techniques into the team's methodology. Automate repetitive tasks by developing scripts to streamline testing processes. Mentor junior penetration testers and contribute to their professional development. Play a key role in enhancing existing tools, methodologies, and reports. Support pre-sales efforts by acting as a penetration testing … non-technical stakeholders. Contribute to thought leadership by writing blogs/white papers and/or speaking at conferences. Need to Have At least 5 years of experience in penetration testing. UK Cyber Security Council Chartership status of Principal or above. Subject matter expertise in web, mobile or network penetration testing with track record of end to end More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Penetration Tester

Belfast, Northern Ireland, United Kingdom
Hybrid / WFH Options
Ocho
pay will be based on your skills and experience — talk with your recruiter to learn more. Principal Tech Consultant - IT Infrastructure Ocho are exclusively working on a number of Penetration Tester roles! If you're passionate about ethical hacking and want to work on real-world cybersecurity challenges, this is the role for you. This organisation is on … major clients and high-profile projects, offering you the chance to work on cutting-edge security challenges in a dynamic and ambitious environment. What You'll Be Doing: Perform penetration tests on networks, applications, and infrastructure. Identify and exploit vulnerabilities to strengthen security defences. Use tools like Burp Suite, Nessus, Metasploit, and Kali Linux. Provide detailed reports with clear … Strong knowledge of OWASP, CVE, and security frameworks. Hands-on experience with ethical hacking & exploit techniques. Ability to communicate findings to technical and non-technical teams. Proficiency in using penetration testing tools such as BurpSuite Pro, Nmap, Nessus, and Metaspolit. Experienced in using Kali Linux and the associated penetration testing tool suite Nice to Have: Relevant security certifications More ❯
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Senior Penetration Tester

Belfast, Northern Ireland, United Kingdom
Hybrid / WFH Options
Ocho
Ocho are exclusively working on a number of Penetration Tester roles! If you're passionate about ethical hacking and want to work on real-world cybersecurity challenges, this is the role for you. This organisation is on a serious growth trajectory, having secured major clients and high-profile projects, offering you the chance to work on cutting-edge … security challenges in a dynamic and ambitious environment. What You'll Be Doing: Perform penetration tests on networks, applications, and infrastructure. Identify and exploit vulnerabilities to strengthen security defences. Use tools like Burp Suite, Nessus, Metasploit, and Kali Linux. Provide detailed reports with clear, actionable recommendations. Experience required: Strong knowledge of OWASP, CVE, and security frameworks. Hands-on experience … with ethical hacking & exploit techniques. Scripting & automation skills a plus. Ability to communicate findings to technical and non-technical teams. Proficiency in using penetration testing tools such as BurpSuite Pro, Nmap, Nessus, and Metaspolit. Experienced in using Kali Linux and the associated penetration testing tool suite Nice to Have: Relevant security certifications (e.g. OSCP, CREST, Cyber Scheme.) UK More ❯
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Senior Penetration Tester

Newtownabbey, Northern Ireland, United Kingdom
Hybrid / WFH Options
JR United Kingdom
Social network you want to login/join with: Ocho are exclusively working on a number of Penetration Tester roles! If you're passionate about ethical hacking and want to work on real-world cybersecurity challenges, this is the role for you. This organisation is on a serious growth trajectory, having secured major clients and high-profile projects … offering you the chance to work on cutting-edge security challenges in a dynamic and ambitious environment. What You'll Be Doing: Perform penetration tests on networks, applications, and infrastructure. Identify and exploit vulnerabilities to strengthen security defences. Use tools like Burp Suite, Nessus, Metasploit, and Kali Linux. Provide detailed reports with clear, actionable recommendations. Experience required: Strong knowledge … of OWASP, CVE, and security frameworks. Hands-on experience with ethical hacking & exploit techniques. Ability to communicate findings to technical and non-technical teams. Proficiency in using penetration testing tools such as BurpSuite Pro, Nmap, Nessus, and Metaspolit. Experienced in using Kali Linux and the associated penetration testing tool suite Nice to Have: Relevant security certifications (e.g. OSCP More ❯
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Senior Penetration Tester

Lisburn, Northern Ireland, United Kingdom
Hybrid / WFH Options
JR United Kingdom
Social network you want to login/join with: Ocho are exclusively working on a number of Penetration Tester roles! If you're passionate about ethical hacking and want to work on real-world cybersecurity challenges, this is the role for you. This organisation is on a serious growth trajectory, having secured major clients and high-profile projects … offering you the chance to work on cutting-edge security challenges in a dynamic and ambitious environment. What You'll Be Doing: Perform penetration tests on networks, applications, and infrastructure. Identify and exploit vulnerabilities to strengthen security defences. Use tools like Burp Suite, Nessus, Metasploit, and Kali Linux. Provide detailed reports with clear, actionable recommendations. Experience required: Strong knowledge … of OWASP, CVE, and security frameworks. Hands-on experience with ethical hacking & exploit techniques. Ability to communicate findings to technical and non-technical teams. Proficiency in using penetration testing tools such as BurpSuite Pro, Nmap, Nessus, and Metaspolit. Experienced in using Kali Linux and the associated penetration testing tool suite Nice to Have: Relevant security certifications (e.g. OSCP More ❯
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Cyber Security Penetration Tester

Belfast, County Antrim, Northern Ireland, United Kingdom
Hybrid / WFH Options
Get Staffed Online Recruitment
Cyber Security - Penetration Tester Location: Belfast Hybrid (2 days in office/client site as required) Type: Full-time | Flexible working hours | Hybrid Our client is a long established and independent cyber security firm based in Belfast. As the premier NCSC-approved supplier for CHECK Penetration Testing in Northern Ireland, including Cyber Incident Exercising being conducted at … continue to grow, having recently secured several high-impact, multi-year contracts across Northern Ireland, they're strengthening their technical team to meet demand. They are looking for experienced Penetration Testers who are passionate about cyber security, thrive on technical challenges, and want to be part of a trusted and growing consultancy. What You'll Be Doing: Conducting penetration … technical debriefs. Staying ahead of evolving threats, techniques and industry standards. Supporting the continuous development of internal tools, methodologies and capability. What They're Looking For: Demonstrable experience in penetration testing (2+ years). CTL or CTM status, or equivalent. All CHECK Team Leaders (CTL) must hold a UK CSC Professional Title at Principal level or above. Solid knowledge More ❯
Employment Type: Permanent, Work From Home
Salary: £70,000
Posted:

Penetration Tester

Belfast, Northern Ireland, United Kingdom
Hybrid / WFH Options
Cyber Guarded Ltd
this requirement will not be considered. Cyber Guarded Ltd is a long-established and independent cyber security firm based in Belfast. As the premier NCSC-approved supplier for CHECK Penetration Testing in Northern Ireland, including Cyber Incident Exercising being conducted at the highest levels, along with Cyber Advisor – Cyber Essentials, we support clients across both public and private sectors. … As we continue to grow significantly, securing contracts across Northern Ireland, we’re strengthening our technical team to meet demand. We’re looking for experienced Penetration Testers who are passionate about cyber security, thrive on technical challenges, and want to be part of a trusted and growing consultancy. What you’ll do: Conduct infrastructure, app, cloud & OT penetration … remediation advice Work hands-on with clients from scoping through debrief Contribute to tooling, methodology and internal R&D What we’re looking for: 2+ years’ paid employment in penetration testing CHECK Team Lead or CHECK Team Member status (or equivalent) CTL must hold UK CSC Professional Title at Principal level or above Strong knowledge of networks, OS (Linux More ❯
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Application Security Engineer/Experienced Pen Tester

Belfast, United Kingdom
Hybrid / WFH Options
ESO
like SAST and DAST deployments. Provide technical support with risk assessments on PHI, and steering improvements to our environment in line with common standards such as NIST. Support External Penetration Testing and application vulnerability efforts, delivering assessments and prioritizing remediation activities across the organization. Be across Threat Intelligence relevant to our industry and geographic regions, and translating that to … with our technology teams. Who You Are - some of the essential things required to be successful in the role At least 4 years' experience in securing software or infrastructure, penetration testing or pure product or application security Strong expertise in offensive security techniques and methodologies, including ethical security testing Deep understanding of secure coding practices, common vulnerabilities and risk More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Penetration Tester

Belfast, Northern Ireland, United Kingdom
X4 Technology
Job Title: Penetration Tester Job Type: Permanent Salary: Up to £70,000 Location: Belfast/Remote (2 days per week on-site) Penetration Tester - Role & Responsibilities Performing penetration tests across cloud, infrastructure & applications Requirements analysis Manual and automated testing Producing clear & concise reports tailored to client needs. Staying ahead of evolving threats, techniques and industry … standards. Penetration Tester - Required Experience 2+ years' experience in Penetration Testing Knowledge of networking, operating systems (Linux, Windows) and web technologies Familiarity with OWASP Top 10 Excellent communication skills - verbal and written Eligibility for SC Clearance Interviews: June 2025 Start Date: July 2025 How to Apply: Apply to Gary Hargreaves at X4 Technology to learn more about More ❯
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Principal Penetration Tester

Belfast, Northern Ireland, United Kingdom
Hybrid / WFH Options
JR United Kingdom
Principal Penetration Tester - £95k - Leeds (Remote first) - Amazing growth opportunities G.Digital have partnered exclusively with one of our BRAND NEW clients looking to add to their Penetration Testing Practice. You'll be the 'right-hand' to a highly regarded Security Tech Director that has broad experience scaling Security practices, and you'll be 'taking the reigns' from … need from you: Experience across multiple Industries Have previously lead a team (2 direct line reports/11 overall) Relevant Cyber credentials - CCT is a must Expertise in Infrastructure Penetration Testing Any competencies in a Scripting/Programming language (Python ideal) Comfortable in a Pre-sales capacity Adhoc There's a 2 interview stages to assess your technical expertise … with a final 20 minute HR/CEO meeting. Interviews happening W/C 2nd June - So get in touch if of interest! Principal Penetration Tester - £95k - Leeds (Remote first) - Amazing growth opportunities Please note that if you are NOT a passport holder of the country for the vacancy you might need a work permit. Check our Blog More ❯
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Cyber Security Penetration Tester

Belfast, United Kingdom
Hybrid / WFH Options
Get Staffed Online Recruitment
Cyber Security - Penetration Tester Location: Belfast Hybrid (2 days in office/client site as required) Type: Full-time Flexible working hours Hybrid Our client is a long established and independent cyber security firm based in Belfast. As the premier NCSC-approved supplier for CHECK Penetration Testing in Northern Ireland, including Cyber Incident Exercising being conducted at More ❯
Employment Type: Permanent
Salary: GBP 70,000 Annual
Posted: