Cyber security jobs in London: 6 live jobs · hiring now: Cloudflare, OpenAI, Stripe. Updated 23 October 2026 from live adverts. Every job shows how to apply, free, with no sign-up needed to search.
Updated 23 Oct 2026
About the Team We are building the Defense Factory to help enterprises find and fix security vulnerabilities with AI. We build infrastructure that enables AI agents to work in secure, customer-controlled cloud…
Sponsor Signal: Sponsorship not confirmed, 1 of 3 checks. Licensed sponsor; Advert doesn't mention sponsorship; No salary given.
Perplexity is seeking a highly skilled, experienced and hands-on Offensive Security Engineer to join our dynamic security team, taking an adversarial approach to hardening Perplexity's infrastructure, applications, and…
Sponsor Signal: Sponsorship not confirmed, 1 of 3 checks. Licensed sponsor; Advert doesn't mention sponsorship; No salary given.
About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers…
Sponsor Signal: Sponsorship not offered, 1 of 3 checks. Licensed sponsor; Advert says sponsorship isn't available; No salary given.
About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers…
Sponsor Signal: Sponsorship not offered, 1 of 3 checks. Licensed sponsor; Advert says sponsorship isn't available; No salary given.
Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their…
Sponsor Signal: Sponsorship not confirmed, 1 of 3 checks. Licensed sponsor; Advert doesn't mention sponsorship; No salary given.
Our Global Structure Deliveroo is now part of DoorDash, bringing together teams with even greater reach, scale, and ambition. Depending on your role, you may collaborate with teammates, systems, and leaders across…
Sponsor Signal: Sponsorship not confirmed, 1 of 3 checks. Licensed sponsor; Advert doesn't mention sponsorship; No salary given.
Mady lists 6 live cyber security jobs in London, refreshed several times a day.
Employers with the most openings: Cloudflare (2), OpenAI (1), Stripe (1), Deliveroo (1), Perplexity (1).
None of these adverts says visa sponsorship is available right now. Mady also checks employers against the Home Office register of licensed sponsors. A licence doesn't guarantee a particular role will be sponsored.
