Senior Network Security Engineer

Are you ready to shape the future of secure connectivity? At Jacobs, we are seeking a Senior Network Security Engineer to deliver high-assurance, security-critical solutions within regulated and sovereign UK contexts.

This is your opportunity to work on impactful programmes that blend traditional networking with modern secure access and hybrid cloud connectivity. Collaborate with multidisciplinary teams to solve unique connectivity challenges in restricted and isolated environments, enabling secure, resilient operations across public and private infrastructures.

• Design and deliver secure network architectures for controlled environments.
• Engineer secure browsing and remote access solutions.
• Define and implement firewall policies, DNS design, and traffic control.
• Apply Zero Trust principles to network access and service exposure.
• Support secure data flows and one-way transfer mechanisms.
• Collaborate with DevOps and platform teams to integrate networking and security controls.
• Act as a technical authority on secure connectivity and network risk.

• Proven experience in network security engineering within high-assurance or regulated environments.
• Strong understanding of network architecture, segmentation, firewall policies, and traffic inspection.
• Experience with Zero Trust networking and designing for restricted or air-gapped environments.
• Security-first mindset with knowledge of operational risk and compliance constraints.
• Hybrid connectivity spanning on-premise and cloud services.
• Virtual networking and hypervisor-level security controls.
• Experience in environments requiring formal security accreditation.

This role is subject to UK Security Vetting at DV (developed vetting) level. Applicants must be eligible and willing to undertake the appropriate security clearance process if not already cleared.

Any offer of employment will be conditional upon satisfactory completion of the relevant clearance process.

This is a full time, permanent, hybrid (2-3 days/week) role based in Bristol, with occasional business travel across the UK.

Full time employment at Jacobs is based on a 40 hour working week. We place a strong emphasis on work life balance and flexibility, and flexi time is available.

We offer an excellent and wide range of employee benefits including comprehensive Health Cover, Life Assurance, Income Protection, holiday buy/sell scheme, and a variety of wellbeing, family, parental and fertility support offerings, along with an enhanced contribution pension scheme.

As a disability confident employer, we will interview disabled candidates who best meet the criteria. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.