https://jobs.co.uk/job/network-security-engineer-oscar-technology--1a215a19-5b65-408f-97d2-0fca3192f4a9 RSS feed for Network Security Engineer at Oscar Technology. en-gb Tue, 20 Oct 2026 18:20:51 GMT https://jobs.co.uk/job/network-security-engineer-oscar-technology--1a215a19-5b65-408f-97d2-0fca3192f4a9 https://jobs.co.uk/job/network-security-engineer-oscar-technology--1a215a19-5b65-408f-97d2-0fca3192f4a9 Tue, 20 Oct 2026 11:53:53 GMT Location: Manchester | Salary: 400.00-400.00 Daily | Type: Permanent | Network Security Engineer - Firewall Rule Optimization (AlgoSec) £400 - £450 per day (Inside IR35) 6-month initial contract Start: ASAP On site, 4-5 days per week in Manchester Our client is looking for a Network Security Engineer to reduce risk from overly permissive firewall rules and routing that bypasses proxy controls. This is a hands-on remediation role within a three-person team, with one engineer each in India, the UK and the US. You''ll work through years of accumulated rule changes as part of an AlgoSec-led cleanup, and align the outcome to the client''s target-state security design. Interviews are commencing imminently. What you''ll do Review and tighten overly permissive firewall rules using AlgoSec analysis Identify and remediate routing that bypasses proxy controls Work with application and infrastructure owners to agree, implement and validate rule changes Document changes and hand off cleanly across India, UK and US time zones Align all work with the target-state security design What you''ll bring Firewall engineering and rule-base optimisation experience Strong routing knowledge and Layer 4 through Layer 7 understanding Experience working under change control in... Permanent