101 to 125 of 230 Tester Jobs in the UK

Performance Tester Summary Location: Reading (UK) Candidates must be open to frequent visits to client site in Reading, UK Day Rate: Negotiable (IR35 Determination TBC) Duration: 6 Months Availability: ASAP About the Client My client is the air transport industry's IT provider, delivering solutions for airlines, airports, aircraft, and governments. Their technology powers more seamless, safe, and sustainable air … travel. They are looking to hire an experienced Performance Tester on a contract basis for an initial 6 months, with a potential to extend further. About the Role Working within the Borders business unit, The ideal candidate will have experience in performance testing of UI, APIs, and messaging systems, with strong hands-on expertise in LoadRunner Suite, Azure/Jenkins More ❯

Performance Tester Summary Location: Reading (UK) Candidates must be open to frequent visits to client site in Reading, UK Day Rate: Negotiable (IR35 Determination TBC) Duration: 6 Months Availability: ASAP About the Client My client is the air transport industry's IT provider, delivering solutions for airlines, airports, aircraft, and governments. Their technology powers more seamless, safe, and sustainable air … travel. They are looking to hire an experienced Performance Tester on a contract basis for an initial 6 months, with a potential to extend further. About the Role Working within the Borders business unit, The ideal candidate will have experience in performance testing of UI, APIs, and messaging systems, with strong hands-on expertise in LoadRunner Suite, Azure/Jenkins More ❯

Performance Tester Summary Location: Reading (UK) Candidates must be open to frequent visits to client site in Reading, UK Day Rate: Negotiable (IR35 Determination TBC) Duration: 6 Months Availability: ASAP About the Client My client is the air transport industry's IT provider, delivering solutions for airlines, airports, aircraft, and governments. Their technology powers more seamless, safe, and sustainable air … travel. They are looking to hire an experienced Performance Tester on a contract basis for an initial 6 months, with a potential to extend further. About the Role Working within the Borders business unit, The ideal candidate will have experience in performance testing of UI, APIs, and messaging systems, with strong hands-on expertise in LoadRunner Suite, Azure/Jenkins More ❯

Job Title: Penetration Tester Role: An exciting opportunity for a mid-level Penetration Tester to join a dynamic and collaborative security consultancy based in London. This role is ideal for a proactive individual with a hacker’s mindset and broad security testing experience across applications, networks, cloud platforms, and more. You'll be a key player in delivering high-quality More ❯

Are you a cybersecurity enthusiast with expertise in penetration testing across infrastructure, web applications, mobile, and cloud environments? A Penetration Tester is needed to deliver high-quality security assessments and support clients in identifying and addressing vulnerabilities across their technology landscape. Based near Doncaster or Manchester, this role involves hands-on penetration testing across infrastructure and applications, contributing to technical More ❯

security projects. The NCSC-approved CHECK company specializes in penetration testing and security assessment services under the government-accredited CHECK scheme. They are currently seeking for a skilled Penetration Tester to join the growing team. This role requires an office presence 60% of the time, either in the head office or customer site. Are you ready to take the next More ❯

Overview We are seeking a part-time (24 hours/week) Firmware Software Tester who is responsible for verifying user interface and machine functionality according to its Design Specification(s). Test laundry equipment, control boards, and any other ancillary controls or systems to validate that the machines are in line with specific regulations, standards and guidelines set forth by More ❯

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 and vulnerability assessments across a range of technologies and a wide range of customers including software, fintech, manufacturing, engineering More ❯

Automation Tester (DV Security Clearance) Position Description CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named one of the 'World's Best Employers' by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI partner not just an More ❯

Join a dynamic cybersecurity team near Doncaster or Manchester, where you'll play a key role in securing clients' digital landscapes. As a penetration testing expert, you will work on cutting-edge projects across infrastructure, web applications, mobile, and cloud More ❯

Please note: it is essential that you have either an active, or recently active DV clearance. Who we are looking to recruit Infoserv is seeking enthusiastic individuals with a desire to continually learn, within a friendly community of like-minded More ❯

Senior Penetration Tester – Must be eligible to obtain security clearance We are looking for a Senior Penetration Tester/Ethical Hacker to work freelance for a company who delivers high-quality security solutions for an array of different clients from varied industries. Due to an unprecedented increase in workload, we are looking for a reliable Penetration Tester to work on More ❯

Senior Penetration Tester Must be eligible to obtain security clearance We are looking for a Senior Penetration Tester/Ethical Hacker to work freelance for a company who delivers high-quality security solutions for an array of different clients from varied industries. Due to an unprecedented increase in workload, we are looking for a reliable Penetration Tester to work on More ❯

Senior Penetration Tester – UK remote - £60,000 - £80,000 Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing and red teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester, you’ll play a central More ❯

Senior Penetration Tester – UK remote - £60,000 - £80,000 Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing and red teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester, you’ll play a central More ❯

Penetration Tester – Infrastructure Salary: £70,000–£100,000 (depending on experience) Location: Hybrid – London (2 days per week on-site) Note: To be eligible for this role, you must be eligible for UK Security Clearance (SC). A high-performing digital security team is looking for an experienced Infrastructure Penetration Tester to join them in delivering critical assessments across complex … with internal infrastructure exploitation tools Certifications (preferred but not essential): CREST CTM, CTL, CSTM or Cyber Scheme Practitioner OSCP (current or lapsed) If you’re an experienced infrastructure penetration tester looking for meaningful work, we want to hear from you. More ❯

Penetration Tester – Infrastructure Salary: £70,000–£100,000 (depending on experience) Location: Hybrid – London (2 days per week on-site) Note: To be eligible for this role, you must be eligible for UK Security Clearance (SC). A high-performing digital security team is looking for an experienced Infrastructure Penetration Tester to join them in delivering critical assessments across complex … with internal infrastructure exploitation tools Certifications (preferred but not essential): CREST CTM, CTL, CSTM or Cyber Scheme Practitioner OSCP (current or lapsed) If you’re an experienced infrastructure penetration tester looking for meaningful work, we want to hear from you. More ❯

Penetration Tester – Infrastructure Salary: £70,000–£100,000 (depending on experience) Location: Hybrid – London (2 days per week on-site) Note: To be eligible for this role, you must be eligible for UK Security Clearance (SC). A high-performing digital security team is looking for an experienced Infrastructure Penetration Tester to join them in delivering critical assessments across complex … with internal infrastructure exploitation tools Certifications (preferred but not essential): CREST CTM, CTL, CSTM or Cyber Scheme Practitioner OSCP (current or lapsed) If you’re an experienced infrastructure penetration tester looking for meaningful work, we want to hear from you. More ❯

Software Tester Bristol Circa £15.00 Per Hour + Pension + Holidays + Company Benefits Monday to Friday. Days. Hybrid Working. 3-Month Initial Contract. Possibility of Extension. A Software Tester sought for an established developer and manufacturer of medical devices, based in Bristol. This is an excellent opportunity for the successful candidate to be involved with the development of high More ❯

Role: Penetration Tester Location: London Salary: £45k - £60k Work Pattern: On-Site For 3 Months and Then 3 Days On-Site/2 Days WFH Skillset: OWASP, Cloud Platforms, SSL/TLS Summary An elite security consultancy has a brand new role for an experienced Penetration Tester to join their team. The role is being offered on a permanent basis … Platforms OSI Model Benefits Annual Training and Development Plans Regular Performance Reviews Industry Events and Conferences Hybrid Working After Probation Period Apply Now! If you are an experienced Penetration Tester and you are looking to progress with an organisation alongside ambitious and driven professionals, then look no further - this is the role for you! Referrals: If this role isn't … to recommend someone for this role. Interviews for this role will be held imminently. To be considered, please send your CV to me now to avoid disappointment. Role: Penetration Tester Location: London Salary: £45k - £60k Work Pattern: On-Site For 3 Months and Then 3 Days On-Site/2 Days WFH Skillset: OWASP, Cloud Platforms, SSL/TLS Oscar More ❯

Penetration Tester £up to £100,000 GBP Bonus Hybrid WORKING Location: United Kingdom (Greater London) Type: Permanent Role: Penetration Tester (Infrastructure Focus) Work Type & Location: Hybrid - London preferred (other UK locations considered) Role Type: Permanent Start Date: Immediate Anson McCade is proud to be supporting a global innovation and transformation consultancy in growing their elite Digital & Data team. We're … seeking a Penetration Tester with a deep focus on infrastructure and Active Directory environments. This isn't your typical web app testing role-this is hands-on, internal infrastructure testing in high-stakes client environments (defence, critical infrastructure, national security). This is a high-trust, high-impact role for someone confident in navigating sensitive networks, with the ability to … think independently, consult directly with clients, and deliver clear, actionable insights. As a Penetration Tester, you will: • Deliver internal infrastructure penetration tests, including Active Directory environments • Act as a trusted advisor to clients-this is a hands-on consulting-facing role • Document clear, concise technical reports for both technical and non-technical stakeholders • Operate independently in sensitive and sometimes live More ❯

Penetration Tester Position Description CGI Cyber Security Team in the UK is one of the largest Cyber consultancies in the UK with around 300 members. The UK Cyber team works across a variety of domains including: Government, Defence, Critical Infrastructure, Healthcare, Utilities, Banking and Financial Services and Many more. At CGI you will get the opportunity to work across a … applications (on diverse mobile platforms) would be of an advantage. You would join our established team of penetration testers with the possibility of progressing to team leader or principal tester positions. You would be able to work flexibly, undertaking work at home and at client sites across the UK. Required qualifications to be successful in this role - CHECK Team Leader … CTL) - CHECK Team Member (CTM) - CREST Certified Simulated Attack Specialist (CCSAS) - CREST Certified Tester (CCT). Sometimes known as CREST Certified Infrastructure Tester (CCT Inf) or CREST Certified Web Application Tester (CCT App) - Cyber Scheme Team Leader (CSTL) - TigerScheme Qualified Security Team Leader (QSTL) - Crest Registered Tester (CRT) - Cyber Scheme Team Member (CSTM) - TigerScheme Qualified Security Team Member (QSTM) - CREST More ❯

Penetration Tester (OSCP Certified) - Up to £45,000 DOE Location: UK fully remote Salary: Up to £45,000 per annum, dependent on experience Employment Type: Full-Time, Permanent Eligibility: UK Residents only (UK Passport or Indefinite Leave to Remain required) - Unfortunately, PSW Visas cannot be considered. A very exciting growth role for the right person! I'm an experinced cyber … recruiter (of 20 yrs+) ready to talk to qualified individuals. We are currently seeking an enthusiastic and technically capable Penetration Tester with at least 6 months of hands-on penetration testing experience and a strong interest in developing advanced technical skills. This is a rare opportunity to join a highly skilled and diverse security team committed to continuous growth and … Clear career development pathway towards advanced offensive roles , including Red Team and Adversarial Simulation Exposure to a broad range of real-world security challenges in varied environments Keywords: Penetration Tester, OSCP, OSEP, Offensive Security, Ethical Hacking, Red Team, Web Application Security, Cyber Security Jobs UK, Cloud Security, Infrastructure Testing, Adversarial Simulation, Ethical Hacker, InfoSec, Application Security, UK Cyber Jobs, Security More ❯

Penetration Tester (OSCP Certified) - Up to £45,000 DOE Location: UK fully remote Salary: Up to £45,000 per annum, dependent on experience Employment Type: Full-Time, Permanent Eligibility: UK Residents only (UK Passport or Indefinite Leave to Remain required) - Unfortunately, PSW Visas cannot be considered. A very exciting growth role for the right person! I'm an experinced cyber … recruiter (of 20 yrs+) ready to talk to qualified individuals. We are currently seeking an enthusiastic and technically capable Penetration Tester with at least 6 months of hands-on penetration testing experience and a strong interest in developing advanced technical skills. This is a rare opportunity to join a highly skilled and diverse security team committed to continuous growth and … Clear career development pathway towards advanced offensive roles , including Red Team and Adversarial Simulation Exposure to a broad range of real-world security challenges in varied environments Keywords: Penetration Tester, OSCP, OSEP, Offensive Security, Ethical Hacking, Red Team, Web Application Security, Cyber Security Jobs UK, Cloud Security, Infrastructure Testing, Adversarial Simulation, Ethical Hacker, InfoSec, Application Security, UK Cyber Jobs, Security More ❯

is to protect businesses by delivering tailored, cutting-edge cybersecurity solutions that keep them resilient and ahead of cyber threats. The Role We are looking for an experienced Penetration Tester to join our team. You will conduct security assessments and ethical hacking activities to identify vulnerabilities in client systems. This role requires a deep understanding of attack techniques, security frameworks … diverse projects. Support for professional development, including training and certification assistance. Flexible working arrangements, including remote options. A collaborative and innovative work environment. If you are a skilled Penetration Tester looking for an exciting role, we'd love to hear from you. More ❯