Penetration testing jobs in the United Kingdom

47 open Penetration testing roles at 37 companies in the United Kingdom. 44 of them are open to candidates of any nationality; the rest ask for citizenship or a government security clearance. 4 mention relocation support.

Rebuilt 30 Oct 2026
open roles
47
companies
37
open to any nationality
94%
median stated pay
$69k

Companies hiring

Newest roles

Lloyds Bank

lloydsbank.com
lloydsbank.com · HQ: London, United Kingdom · Mortgage Lending & Brokers · Commercial & Retail Banks · 5000+ employees · Est. 1765 · Hiring 16, 10 new
HQ: London, United Kingdom · Mortgage Lending & Brokers · Commercial & Retail Banks · 5000+ employees · Est. 1765 · Hiring 16, 10 new
Lloyds Bank is a British retail and commercial bank within Lloyds Banking Group, offering banking services including mortgages. It hires digital delivery managers, solution architects, software and infrastructure engineers, cryptography engineers and insurance finance business partners across Bristol, London, Edinburgh and Manchester. The bank is headquartered in London, United Kingdom.
No named decision-maker yet.
No careers mailbox known
Verified live · 4 hours ago Visa sponsor 3 days ago Hiring now · 88%

Penetration Tester

$66k – $73k per year · Hybrid (Manchester, United Kingdom) · Full-Time
OWASP Top 10
Apply

AI Security Institute

aisi.gov.uk
aisi.gov.uk · HQ: London, United Kingdom · AI Governance & Compliance · AI Research Labs · AI Safety & Alignment · Est. 2023 · Hiring 4, 1 new
HQ: London, United Kingdom · AI Governance & Compliance · AI Research Labs · AI Safety & Alignment · Est. 2023 · Hiring 4, 1 new
The AI Security Institute is the United Kingdom government body that tests advanced artificial intelligence models for risks relevant to national security and public safety. Its researchers run pre deployment evaluations together with frontier laboratories, covering cyber offence capability, chemical and biological uplift, autonomous replication and the robustness of model safeguards. The institute publishes its evaluation methodology and the Inspect open source testing framework, and it funds external alignment research through a dedicated grant programme.
No named decision-maker yet.
No careers mailbox known
Verified live · 1 hour ago 3 days ago Hiring now · 86%

Offensive Security Engineer

≈ $64k – $145k per year (Estimated) · London · Remote (United Kingdom)
Rust
Python
AI/ML
Red Teaming
AI Agents
LLM
DevOps
AWS
Proxmox VE
Linux
Kubernetes
+1
Apply
Verified live · 1 hour ago 1 month ago Fading · 27%

Alignment Red Team - Research Engineer/Research Scientist

≈ $47k – $90k per year (Estimated) · Junior · 1+ year exp · London · Remote (United Kingdom) · Junior
Python
AI/ML
Anthropic
Red Teaming
Claude
Machine Learning
Post-training
LLM
Apply

Claranet

claranet.com
claranet.com · HQ: London, United Kingdom · Cloud Consulting & Migration · Managed IT Services (MSP) · Est. 1996 · Hiring 9, 2 new
HQ: London, United Kingdom · Cloud Consulting & Migration · Managed IT Services (MSP) · Est. 1996 · Hiring 9, 2 new
Claranet is a London managed services provider founded in 1996 that runs cloud, network and cybersecurity for mid-sized organisations. It operates data centres and support operations across Europe and Brazil after a long series of acquisitions. The company helps customers migrate and operate workloads on hyperscale platforms as well as its own infrastructure.
Olaf Fischer · Geschäftsführer · decision-maker
Sebastian Vögel · Geschäftsführer · decision-maker
Careers mailbox is known
Visa sponsor 3 days ago Hiring now · 90%

CST Penetration Tester

$47k – $54k per year · In office (Leeds, United Kingdom) · Full-Time
Ruby
Bash
PowerShell
Python
DevOps
SOAP
TCP/IP
DNS
Windows
Rest API
Linux
Cybersecurity
Burp Suite
SQLmap
OWASP Top 10
+5
Apply

Accenture

accenture.com
accenture.com · HQ: Dublin, Ireland · Business Process Outsourcing (BPO) · Systems Integrators · Management Consulting · IT Consulting & Digital Transformation · 5000+ employees · Est. 1989 · IT services · Trust A · Hiring 5365, 275 new
HQ: Dublin, Ireland · Business Process Outsourcing (BPO) · Systems Integrators · Management Consulting · IT Consulting & Digital Transformation · 5000+ employees · Est. 1989 · IT services · Trust A · Hiring 5365, 275 new
Accenture is a professional services company that began as the consulting arm of the accounting firm Arthur Andersen, separated as Andersen Consulting in 1989 and took its present name in 2001. It is one of the largest technology services organisations in the world, employing well over seven hundred thousand people and running strategy, consulting, technology, operations and industry work for most of the Fortune Global 500. Incorporated in Dublin and built on a delivery network concentrated in India and the Philippines, it has reoriented around cloud migration, cybersecurity and generative AI, which it now books as a distinct multi-billion dollar revenue line.
Angie Park · Chief Financial Officer · decision-maker
Julie Sweet · Chair & Chief Executive Officer · decision-maker
George Shaheen · Founding Chief Executive of Andersen Consulting · founder
Careers mailbox is known
Verified live · 2 hours ago Visa sponsor 9 days ago Fading · 27%

Cyber Security Penetration Tester

≈ $55k – $106k per year (Estimated) · Junior · 1+ year exp · Hybrid (London, Cheltenham, Glasgow, Edinburgh, United Kingdom) · Full-Time · Junior
Bash
PowerShell
Python
DevOps
Windows
Linux
GCP
Azure
AWS
Cybersecurity
Burp Suite
Metasploit
Nmap
OWASP Top 10
OWASP
+5
Apply

Frasers Group

frasers.group
frasers.group · HQ: Shirebrook, United Kingdom · Luxury Retail · Sportswear & Activewear · Sporting Goods · 1001-5000 employees · Est. 1982 · Trust B · Hiring 236, 48 new
HQ: Shirebrook, United Kingdom · Luxury Retail · Sportswear & Activewear · Sporting Goods · 1001-5000 employees · Est. 1982 · Trust B · Hiring 236, 48 new
Frasers Group is a global retail enterprise specializing in athletic apparel, luxury fashion, consumer products, and property management. Headquartered in Shirebrook, United Kingdom, the group operates an extensive omnichannel portfolio of retail and brand assets, including Sports Direct, Flannels, House of Fraser, Jack Wills, and Evans Cycles.
No named decision-maker yet.
Careers mailbox is known
Verified live · 1 hour ago Visa sponsor 16 days ago Fading · 41%

Vulnerability Analyst

≈ $44k – $85k per year (Estimated) · Junior · 2+ years exp · In office (Shirebrook, United Kingdom) · Full-Time · Senior
MITRE ATT&CK
CVSS
Apply

Skills these roles ask for

Python 22Linux 11Red Teaming 11C++ 10AWS 7Ghidra 6AI Agents 6Burp Suite 6Assembly 5Qualys Cloud Platform 5Windows 5OWASP Top 10 5JavaScript 4Rust 4CI/CD 4CVSS 4

Where the roles are

London 19Cheltenham 5Manchester 5Leeds 4Bucharest 2Gloucester 2Bristol 2Newbury 2Edinburgh 2Belfast 1

Questions

Can a foreigner apply for these roles?

44 of the 47 roles here state no citizenship or security-clearance demand. A role that does says so in its advert, and the card marks it.

Which companies hire most cybersecurity specialists?

Coretech Security (4), London Stock Exchange Group (3), Amazon (3), RTX (2), AI Security Institute (2).

Which roles count as cybersecurity jobs?

Every role whose work is protecting systems and data - SOC and incident response, threat intelligence and forensics, application and cloud security, authorized penetration testing and vulnerability management, identity and access, governance, risk and compliance, security leadership - at any employer. A role is filed under a specialty when its title names one; a "Cybersecurity Engineer" that names none is a cybersecurity engineer's.

How fresh is this?

Every role is re-checked on the employer's own careers board at least every 48 hours, and the page is rebuilt every night.

Source: 47 live postings on employers' careers boardsUpdated 30 Oct 2026MethodologyJSONCC BY-SA 4.0