cordTech Hiring Rankings
UK's Most Popular Security Companies
The UK's most popular Security companies of Summer 2026 that are actively hiring engineers.
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Company
Open jobs
Headcount
Overall popularity
Calculated based on total number of applications received compared with all companies in Summer ’26.
1
Risk Ledger
London, UK · Computer and Network SecurityEnhancing Trust + Security in the global Supply Chain.
2 jobs
51 - 200
Top 4%
2
PortSwigger
Knutsford, UK · Software DevelopmentPortSwigger is a web security company on a mission to enable the world to secure the web.
4 jobs
201 - 500
Top 16%
3
Rowden
Bristol, UK · EngineeringBuilding the UK’s next generation engineering powerhouse, providing critical technology for national resilience.
16 jobs
51 - 200
Top 17%
4
Nominet
Oxford, UK · Cloud and Infrastructure5 jobs
201 - 500
Top 25%
5
TwinStream
Cheltenham, UK · Computer and Network SecurityA Cyber Security Startup specialising in Cross Domain Solutions.
1 job
51 - 200
Top 26%
6
Thermoteknix
Cambridge, UK · HardwareDesigner and manufacturer of thermal imaging systems for defence, security, aerospace, and industrial applications.
6 jobs
51 - 200
Top 33%
7
Netcraft
London, UK · SecurityTo protect the world from cybercrime
4 jobs
201 - 500
Top 34%
8
Becrypt
London, UK · Computer and Network SecurityBecrypt is a leading supplier of end-user device security products and services.
5 jobs
51 - 200
Top 36%
9
Detego Global
London, UK · Computer and Network SecurityDigital Forensics, Case Management, Endpoint Monitoring, Professional Digital Forensics and Security Services.
3 jobs
51 - 200
Top 41%
10
iProov
London, UK · Identity and AccessRight person. Real person. Right now.
9 jobs
201 - 500
Top 42%
11
Bridewell
London, UK · Computer and Network SecurityCyber Security. Where it Matters.
10 jobs
201 - 500
Top 44%
12
Trustonic
Cambridge, UK · Computer and Network SecurityWorld-leading trusted technology
5 jobs
51 - 200
Top 52%
13
Encompass Corporation
London, UK · RegTechThe full picture, fast.
2 jobs
51 - 200
Top 59%
14
PCI Pal
London, UK · PaymentsGlobal provider of cloud-based, secure payments solutions. Descoping organisations from the requirements of PCI DSS.
4 jobs
51 - 200
Top 61%
15
Nexor
Nottingham, UK · Computer and Network SecuritySecure Information Exchange Specialists
6 jobs
51 - 200
Top 61%
16
Protection Group International
London, UK · Computer and Network SecurityWe build long-range digital resilience using technology-supported human insight.
5 jobs
51 - 200
Top 65%
17
Kocho
London, UK · SecurityBecome greater.
1 job
201 - 500
Top 68%
18
Prevail Partners Limited
London, UK · SecurityPrevail are Mission Enablers; Innovative Problem Solvers; and provide penetrative Insights and Investigations.
1 job
51 - 200
Top 70%
19
InfoSum
London, UK · DataReclaim your data destiny. Build better customer experiences.
1 job
51 - 200
Top 71%
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