Senior Network Engineer

Experteer Overview In this role you will lead and craft Serco’s enterprise network capabilities in a multi-cloud, security-driven environment. You’ll own design, engineering, and evolution of network services across AWS and Azure, coordinating with product, architecture, and operations teams to deliver resilient, secure connectivity. You’ll produce architecture documentation and roadmaps, driving improvements in performance and security while supporting complex troubleshooting and service introductions. This is a delivery-focused, hands-on position with a meaningful impact on public-sector-aligned infrastructure. Pay / Benefits * Lead the technical design, engineering configuration, and strategic evolution of Serco’s enterprise network services. * Design and support secure multi-cloud networking solutions across AWS and Azure. * Collaborate with Product Owners, Solution Architects, operational teams, and third-party suppliers to deliver robust network solutions. * Produce and maintain high-quality architecture documentation including HLDs, LLDs, and network diagrams. * Drive continual improvement across network performance, resilience, security, and service adoption. * Support operational teams in troubleshooting complex network issues and identifying long-term solutions. * Develop short and long-term technology roadmaps to keep services current and scalable. * Support new service introductions through technical analysis, deployment planning, cost modelling, and implementation coordination. * Ensure network services align with security best practice, including zero-trust principles and secure government/regulated environments. * Build strong relationships with stakeholders, suppliers, and business teams across a large matrix organisation. Tasks * Strong hands-on experience across enterprise networking technologies including AWS networking, Azure networking, Cisco Meraki technologies, network security technologies and enterprise networking technologies. * Experience in regulated or government secure environments is desirable. * Knowledge of carrier WAN technologies including MPLS, leased lines, and managed connectivity services. * Experience with architectural frameworks such as TOGAF. * Strong experience producing HLDs, LLDs, technical architecture documentation, and network diagrams. * Experience managing and collaborating with suppliers, partners, and third-party operational teams. * Strong troubleshooting and problem-solving capability in complex enterprise environments. * 5+ years’ experience in a senior network engineering or network design role. * Relevant certifications desirable: CCNP Enterprise, AWS Advanced Networking - Specialty, Azure Network Engineer Associate, Palo Alto PCNSE/Prisma. * Some environments require out-of-hours support. Key requirements * Flexible working considered * Pension - 6% * Discounts for cinema, Merlin entertainment, online shopping, mobile plans, leisure centre memberships * Employee wellbeing programmes (EAP, Simply Health Cash Plans) * Career development training and coaching * Inclusive culture and support for diversity

_ high-quality architecture documentation including HLDs, LLDs, and network diagrams. * Drive continual improvement across network performance, resilience, security, and service adoption. * Support operational teams in troubleshooting complex network issues and identifying long-term solutions. * Develop short and long-term technology roadmaps to keep services current and scalable. * Support new service introductions through technical analysis, deployment planning, cost modelling, and implementation coordination. * Ensure network services align with security best practice, including zero-trust principles and secure government/regulated environments. * Build strong relationships with stakeholders, suppliers, and business teams across a large matrix organisation. Tasks * Strong hands-on experience across enterprise networking technologies including AWS networking, Azure networking, Cisco Meraki technologies, network security technologies and enterprise networking technologies. * Experience in regulated or government secure environments is desirable. * Knowledge of carrier WAN technologies including MPLS, leased lines, and managed connectivity services. * Experience with architectural frameworks such as TOGAF. * Strong experience producing HLDs, LLDs, technical architecture documentation, and network diagrams. * Experience managing and collaborating with suppliers, partners, and third-party operational teams. * Strong troubleshooting and problem-solving capability in complex enterprise environments. * 5+ years’ experience in a senior network engineering or network design role. * Relevant certifications desirable: CCNP Enterprise, AWS Advanced Networking - Specialty, Azure Network Engineer Associate, Palo Alto PCNSE/Prisma. * Some environments require out-of-hours support. Key requirements * Flexible working considered * Pension - 6% * Discounts for cinema, Merlin entertainment, online shopping, mobile plans, leisure centre memberships * Employee wellbeing programmes (EAP, a aaaN_ Health Cash Plans) * Career development training and coaching * Inclusive culture and support for diversity