Junior Penetration Tester Jobs In Sheffield Page 6 by Location

Penetration Tester - Grow in a Collaborative Security Team

Company IconUltima
Location IconReading

A leading technology provider in Reading is seeking a Penetration Tester to enhance its Security Testing Practice. The role involves delivering high-quality penetration testing engagements, supporting IT Health Checks, and collaborating with senior c...Read More>>.

Posted: June 6th, 2026
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Penetration Tester — Hybrid, UK Cyber Security Consultancy

Company Icon4Square Recruitment Ltd
Location IconManchester

A growing UK cyber security consultancy is seeking a skilled Penetration Tester to conduct security assessments across various technologies. Join a supportive team with opportunities for professional development and flexibility in a hybrid working en...Read More>>.

Posted: June 6th, 2026
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Senior Security Consultant (Hardware/Embedded Penetration Tester)

Company IconNetSPI
Location Icon

OverviewNetSPI is an award-winning pioneer of Penetration Testing as a Service (PTaaS) with its AI-powered platform supported by more than 350 in-house cybersecurity experts. Specializing in 50+ pentest types, attack surface visibility...Read More>>.

Posted: June 6th, 2026
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Senior Security Testing Consultant

Company IconAnson McCade
Location Icon

Deliver hands‑on security testing that protects critical systems. About the Role As a Senior Security Testing Consultant, you’ll deliver end‑to‑end security testing engagements across applications, web, mobile, and infra...Read More>>.

Posted: June 6th, 2026
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Security Testing & Compliance Auditor

Company IconWipro
Location IconLondon

Wipro is seeking a Security Testing Coordinator in Greater London, specializing in information security governance, risk, and compliance. The ideal candidate will have a strong understanding of ISO 27001 and be experienced in security testing and aud...Read More>>.

Posted: June 6th, 2026
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Senior Penetration Tester — Web, Mobile & API Security

Company IconSynergy Solutions International Limited
Location IconLondon

A consultancy firm in London is looking for a Senior Penetration Tester to join their team. The role involves performing high-standard penetration tests, managing and mentoring security consultants, and producing timely reports. Ideal candidates will...Read More>>.

Posted: June 6th, 2026
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Penetration Tester (CREST/CHECK) – Shape Secure Futures

Company IconGoaco
Location Icon

A technology solutions provider in the United Kingdom seeks a skilled Penetration Tester to enhance cybersecurity for clients. You will conduct penetration tests, assess security vulnerabilities, and collaborate closely with the Global Cyber Security...Read More>>.

Posted: June 6th, 2026
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Associate Penetration Tester — Web/API Security & Reporting

Company IconRadley James
Location IconManchester

A leading cybersecurity firm in Manchester is seeking an Associate Penetration Tester to identify and remediate security vulnerabilities across applications and infrastructure. You will conduct penetration tests, document findings, and support cross-...Read More>>.

Posted: June 6th, 2026
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Penetration Tester — Hybrid London, Red Team Growth

Company IconSolutions & Innovations Company
Location IconLondon

A leading cybersecurity firm in London is seeking a passionate Penetration Tester to enhance their offensive security team. You will support cloud and infrastructure security assessments, write detailed reports for various stakeholders, and collabora...Read More>>.

Posted: June 6th, 2026
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Exposure Management & Security Testing Specialist

Company IconVodafone
Location IconNewbury

A leading telecommunications company based in Newbury is seeking a skilled candidate for a role focused on offensive security. The position involves validating disclosures, testing, and prioritizing remediation actions. Ideal candidates will possess...Read More>>.

Posted: June 6th, 2026
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Security Testing Consultant

Company IconPursuu
Location IconLondon

About the job Security Testing Consultant Why Be A Testing Consultant Here? £50-65k per annum (negotiable increase) 22 Days Holiday Bank Holidays 3 Days Company Holiday In Between Christm...Read More>>.

Posted: June 23rd, 2026
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IT/OT Penetration Tester | Hybrid + Learning Budget

Company IconPA Consulting
Location IconLondon

A leading consulting firm in Greater London is looking for a penetration tester to deliver high-quality security assessments and collaborate with multiple teams. The ideal candidate will have relevant certifications and a strong knowledge background...Read More>>.

Posted: July 6th, 2026
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Senior Penetration Tester - FinTech Security Leader

Company IconStarling Bank Limited
Location IconLondon

Starling Bank Limited is seeking an experienced Penetration Tester to join our security team in a hybrid role. You will conduct tests across mobile, web, cloud, and infrastructure, partner with engineering to secure development, and help remediati...Read More>>.

Posted: July 22nd, 2026
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Graduate Cyber Security Consultant/Penetration Tester

Company IconBPM Tech
Location Icon

Penetration Tester – Bristol | Full-Time | Hybrid with Client Travel My client is a UK-based technology and cybersecurity consultancy delivering cutting‑edge solutions across sectors including telecoms, finance, defence, rail, and...Read More>>.

Posted: August 17th, 2026
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Senior Penetration Tester — Hybrid, Secure Systems & Innovation

Company IconStarling
Location IconLondon

Starling is recruiting an experienced Penetration Tester to join our security team in a hybrid role. You will work with cyber security professionals to ensure services are designed, developed, and operated securely, conducting testing and driving...Read More>>.

Posted: September 2nd, 2026
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Test Engineer — Automation & Security QA

Company IconHdcorp
Location IconManchester

Hamiltonian Dynamics is hiring Test Engineers to ensure quality, reliability, and security across defence and cyber platforms. You will work with software and platform engineers to shape testing approaches and embed quality throughout delivery....Read More>>.

Posted: September 8th, 2026
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Security Consultant - Red Team & Penetration Testing Lead

Company IconHamilton Barnes Associates Limited
Location Icon

Hamilton Barnes Associates Limited is seeking a security testing expert to lead client engagements across the UK. You will conduct network, web, and mobile assessments, perform social engineering, and participate in red team engagements to deliver...Read More>>.

Posted: September 9th, 2026
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Senior Penetration Tester - Elite Security Engineer

Company IconFSP
Location IconLondon

FSP is a leading consultancy specialising in Digital, Security and AI solutions. We are seeking a Senior Penetration Tester to join our Cyber Security practice in the United Kingdom.You will support teams on high-impact security projects, a...Read More>>.

Posted: September 20th, 2026
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Senior Penetration Tester - Hybrid, High-Impact Security

Company IconFSP
Location Icon

FSP is seeking a Senior Penetration Tester to join our Cyber Security practice. You will contribute to high-impact technical projects, providing expert guidance on network, platform, and application security while developing tools for adversarial...Read More>>.

Posted: September 21st, 2026
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Penetration Tester (Associate) – AI & Infra Security

Company IconSky Ireland Limited
Location IconLondon

Sky Ireland Limited is seeking a Cyber Security specialist to conduct penetration tests on applications and infrastructure, while leveraging AI-assisted tools to enhance research and reporting. You will document findings, scope engagements, and co...Read More>>.

Posted: September 24th, 2026
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SC-Cleared Security Researcher & Penetration Tester

Company IconUK Telecoms Lab (UKTL)
Location Icon

UK Telecoms Lab (UKTL) is seeking an experienced security tester to conduct comprehensive assessments in our dedicated lab, performing penetration testing across hardware, software and telecoms systems. You will develop scripts to automate testing...Read More>>.

Posted: September 24th, 2026
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Penetration Tester & Red Team Specialist

Company IconClaranet
Location IconLondon

Claranet is seeking a Penetration Tester to lead and execute web and mobile application and infrastructure testing engagements. You will collaborate with clients to deliver bespoke consultancy, contribute to whitepapers and advisories, and develop...Read More>>.

Posted: September 25th, 2026
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IT/OT Penetration Tester — Hybrid & Client-Facing Security

Company IconAnson McCade
Location IconLondon

Anson McCade is seeking an experienced IT/OT Penetration Tester to join a growing cybersecurity consulting team. You will perform high-quality penetration tests and security assessments across defence, energy, utilities, manufacturing, transport a...Read More>>.

Posted: September 25th, 2026
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Principal Penetration Tester — Hybrid, AWS & Purple Team

Company IconAddition
Location IconWatford

Addition is working with a large, highly regulated organisation on digital transformation and seeks a Principal Penetration Tester in Watford. Hybrid working, competitive salary with bonus and benefits.You will lead testing across web apps,...Read More>>.

Posted: September 25th, 2026
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Penetration Tester & Offensive Security Consultant | DV Eligible

Company IconLorien
Location IconLondon

Lorien in London is seeking an experienced Penetration Tester/Offensive Security Consultant for a long-term on-site contract. You will conduct penetration testing across infrastructure, cloud and web applications, simulating real-world attacks to...Read More>>.

Posted: September 25th, 2026
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Senior Penetration Tester - £700 to £800 (Inside IR35) - 6-12 months

Company IconEames Consulting Group
Location IconLondon

Senior Penetration Tester - £700 to £800 per day (Inside IR35)Hybrid working - 1 to 2 days per week in the office (Ideally London)Contract Senior Penetration Tester responsible for leading AI-enabled vulnerability researc...Read More>>.

Posted: September 27th, 2026
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Lead Penetration Tester: Web, Network & Mobile Security

Company IconBarclays Bank Plc
Location IconManchester

Barclays Bank Plc is seeking a Penetration Tester to identify vulnerabilities across web, network, mobile, and client applications, turning findings into actionable remediation steps. The role sits within a collaborative security testing team and...Read More>>.

Posted: September 30th, 2026
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Security Testing Lead

Company IconIdentifi Global Resources Ltd
Location IconMilton Keynes

Salary: £70,000 - 70,000 per year Requirements: Strong cyber security experience within testing, security engineering, application security or vulnerability management. Experience managing or coordinating...Read More>>.

Posted: October 1st, 2026
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Security Testing Lead - Hybrid - £70k + Bonus

Company IconIdentifi Global Resources Ltd
Location IconMilton Keynes

Identifi Global Resources Ltd. in Milton Keynes is hiring a Cyber Security Testing Lead to own and evolve our security testing programme across applications, infrastructure and cloud environments.You will coordinate external penetration tes...Read More>>.

Posted: October 1st, 2026
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Examination Invigilator: Upholding Fair, Secure Tests

Company IconSRUC
Location IconBroxburn

SRUC is seeking an Invigilator to join the Timetabling and Exams Administration team on a permanent casual contract. The role focuses on creating a professional, welcoming examination environment and ensuring integrity and compliance during assess...Read More>>.

Posted: October 4th, 2026
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Security Consultant (Penetration Testing) – Hybrid UK

Company IconCitation Cyber
Location IconCardiff

Citation Cyber is a leading UK cyber security consultancy delivering penetration testing, Cyber Essentials certification, training and managed services. We are seeking a Security Consultant to join our CHECK/CREST-aligned team.You will perf...Read More>>.

Posted: September 16th, 2026
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Hybrid Penetration Tester & Security Consultant

Company IconCitation Cyber
Location IconBasingstoke

Citation Cyber is seeking a Security Consultant (Penetration Testing) to join our growing team. You will deliver a wide range of technical security assessments across client environments, identifying vulnerabilities and advising on remediation....Read More>>.

Posted: September 21st, 2026
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Penetration Tester & Security Consultant (Hybrid UK)

Company IconCitation Cyber
Location IconChester

Citation Cyber is seeking a Security Consultant (Penetration Testing) to join our hybrid-UK team. You'll deliver security assessments across client environments, report findings clearly and help clients remediate vulnerabilities.As a CHECK/...Read More>>.

Posted: September 21st, 2026
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Penetration Tester - Offensive Security Consultant

Company IconWorkNest Secure
Location Icon

WorkNest Secure is seeking Offensive Security Consultants (Penetration Testers) to join our growing Cyber Security team in the United Kingdom. You will perform CHECK-accredited penetration tests across multiple environments and deliver actionable...Read More>>.

Posted: September 21st, 2026
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Penetration Testing Security Consultant | Hybrid UK

Company IconCitation Cyber
Location IconBradford

Citation Cyber is a leading UK cyber security consultancy delivering penetration testing, certification and managed security services.As a Security Consultant you will join our penetration testing team, delivering assessments across client...Read More>>.

Posted: September 21st, 2026
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Contract Penetration Tester - Web Apps & API Security

Company IconAnthony James Consulting
Location IconFalmer

Anthony James Consulting is seeking an experienced penetration tester or security testing firm to conduct an independent assessment of a Laravel/PHP web application with a substantial API component, based in the Brighton area.The engagement...Read More>>.

Posted: September 22nd, 2026
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Penetration Tester & Red Team Specialist

Company IconDAC Beachcroft LLP
Location Icon

DAC Beachcroft LLP is seeking a Cyber Security Offensive Specialist to join our Technology team in Bristol. You will plan and execute authorised penetration tests, conduct red team exercises, and drive remediation strategies to strengthen our cybe...Read More>>.

Posted: September 22nd, 2026
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