Senior Network Engineer

Do you want to grow your career in network engineering and work on projects that safeguard the UK’s most critical systems? At Leonardo, our Network Engineers are at the heart of designing, configuring, and supporting secure networks that keep our customers connected and protected. 
 

Your work at Leonardo UK will see you take the lead in solving customer problems in an agile, innovative and team-centric manner. The role may involve a blended hybrid working model, with a mixture of working from home and working on site at one of our Leonardo offices to ensure close collaboration with the wider team and with our customers. 

• →Lead the design, configuration, and support of secure networks across on-premise, hybrid, and cloud environments. 

• →Take ownership of engineering delivery for one or more work packages, including planning, estimation, execution, and reporting. 

• →Develop and review high- and low-level network designs and technical documentation. 

• →Integrate and test network components, ensuring compliance with performance and security requirements. 

• →Provide mentoring, guidance, and technical leadership to Network Engineers and Technicians. 

• →Collaborate with stakeholders, project teams, and customers to ensure solutions meet requirements. 

• →Drive continuous improvement and contribute to engineering standards and governance. 

• Strong technical ability with demonstrable experience of delivering and supporting complex networks. 

• Ability to balance hands-on engineering with technical leadership and mentoring responsibilities. 

• Confidence to take ownership of solutions and represent networking in technical discussions. 

• Strong understanding of TCP/IP, OSI model, and routing/switching protocols (BGP, OSPF, HSRP, QoS, VPNs, VLANs, MCLAG). 

• Hands-on experience with Cisco (CCNA/ CCNP level) or equivalent multi-vendor equipment (Dell, Palo Alto, Fortinet). 

• Experience with network security technologies (firewalls, IDS/IPS, VPN, NAC). 

• Familiarity with virtualisation and cloud networking concepts. 

• Experience with network monitoring, diagnostic, and analytics tools. 

• Understanding of ITIL and service management frameworks. 

• CCNA/At least one Cisco CCNP module or equivalent certification/experience (2-4 years). 

• Experience with cloud platforms (AWS, Azure) and hybrid networking. 

• Knowledge of software-defined networking (SDN, SD-WAN) and cloud-native networking. 

• Familiarity with scripting and automation (Python, Ansible, Terraform). 

• Exposure to SIEMs and wider cyber security toolsets. 

• Experience mentoring engineers and contributing to technical governance. 

This is not an exhaustive list, and we are keen to hear from you even if you might not have experience in all the above. The most important skill is a good attitude and willingness to learn.  

This role is subject to pre-employment screening in line with the UK Government’s Baseline Personnel Security Standard (BPSS). An additional range of Personnel Security Controls referred to as National Security Vetting (NSV) may apply, this could include meeting the eligibility requirements for The Security Check (SC) or Developed Vetting (DV). For more information and guidance please visit: https://careers.uk.leonardo.com/gb/en/security-and-vetting 

This role is based at our Bristol site, with hybrid/custom working options where appropriate.