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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Network Security Engineer - **Company:** Hays plc - **Location:** Sheffield, UK - **Experience:** Expert - **Salary:** £50,000.0 - £70,000.0 - **Contract:** Permanent contract - **Skills:** Cisco PIX, Intrusion Detection Systems, Virtual Private Networks (VPN), Network Security, Firewalls (Computer Science), SC Clearance, Palo Alto Networks, Fortinet, Firepower, Cisco - **Published:** September 16, 2026 - **Apply:** https://www.hays.co.uk/job-detail/senior-network-security-engineer-sheffield_4828773 ## About the Role * A good background in Network Security within a large scale complex organisation * Experience setting up, maintaining, and upgrading firewalls * In depth experience of any of the following: Fortinet, Cisco ASA/Firepower, Checkpoint or Palo Alto is crucial * Experience within a large scale, complex organisation is necessary - managed service/consultancy/B2B prior experience would be highly beneficial too * Recent experience dealing with major incidents with networks and firewalls * Top end salaries for this role will require some industry certifications (e.g. Fortinet NSE 4/ NSE 5/ NSE 6/ NSE 7, Checkpoint CCSA/CCSE, Palo Alto PCNSA/PCNSE, Cisco CCNA/CCNP) and in depth experience of the above. * Eligibility to get SC clearance ## Description Senior Network Security Engineer Senior: £50,000 - £70,000 10-15% Performance Bonus + more benefits Location: Hybrid - Office in Sheffield City Centre Your new company Due to continued organisational growth, I'm back on the lookout for some talented Network Security Engineers to work in a managed service environment in Sheffield. This is a fantastic opportunity to progress your network security career with one of the UK's most renowned organisations in a managed service environment. Your new role will involve * Joining the existing Network Security team In tandem with the SOC * Looking for exposure to vulnerabilities * Setting up, maintaining, patching and upgrading customer's firewalls (typical vendors: Cisco, Fortinet, Palo Alto, Checkpoint) * Actively working on client Firewalls * Completing firewall upgrades * Running IPS and IDS * Performing log reviews * General BAU e.g., VPN creation * Facing a variety of clients and helping set up, maintain, monitor, and secure their networks * Dealing appropriately with major incidents * Making sure appropriate steps are in place and followed for the remediation of vulnerabilities * Performing safe upgrades and patches where required * Providing accurate and informed security insights internally and with the organisation's customers * Making sure levels of incident response are appropriate What you'll need to succeed * A good background in Network Security within a large scale complex organisation * Experience setting up, maintaining, and upgrading firewalls * In depth experience of any of the following: Fortinet, Cisco ASA/Firepower, Checkpoint or Palo Alto is crucial * Experience within a large scale, complex organisation is necessary - managed service/consultancy/B2B prior experience would be highly beneficial too * Recent experience dealing with major incidents with networks and firewalls * Top end salaries for this role will require some industry certifications (e.g. Fortinet NSE 4/ NSE 5/ NSE 6/ NSE 7, Checkpoint CCSA/CCSE, Palo Alto PCNSA/PCNSE, Cisco CCNA/CCNP) and in depth experience of the above. * Eligibility to get SC clearance What you'll get in return In addition to a competitive salary of between £50,000 - £70,000 depending on relevant industry experience and live certifications, you can look forward to the following benefits and more: * 10% on target bonus - can be paid up to 15% based on performance * Study leaves and Network Security certifications paid for * Internal progression opportunities * 25 days annual leave (plus bank holidays) * Generous Pension Scheme * Flexible working arrangements * Company specific benefits What you need to do now If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. #4828773 - James ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [WeAreDevelopers LIVE - Back to CODE100](https://www.wearedevelopers.com/videos/1909-wearedevelopers-live-back-to-code100) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) ## Related Articles - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)