Description Network Engineer Location: Farnborough, with flexibility to work from home and regular travel to UK customer and operational sites Role Overview We are looking for an experienced Network Engineer to support and evolve secure, business-critical network services within UK government and defence environments. This is a service-based role, working across 1st to 4th line support teams, with the opportunity to contribute to project and change activities alongside live service operations. The role offers a hybrid working model, combining remote working with on-site presence at secure customer locations where required. What will I be doing? Lead network management and service acceptance activities, setting technical standards and providing subject-matter expertise to programme and delivery teams. Design, validate, and assure network solutions using formal verification and validation principles in secure environments. Produce and maintain high-quality technical documentation, including HLDs, LLDs, work instructions, and operational procedures. Support the operation and continuous improvement of live network services, ensuring availability, resilience, and compliance. Take ownership of complex incidents, driving investigation and resolution through to successful closure. Communicate effectively across technical, organisational, and customer boundaries, including within regulated and security-constrained environments. Participate in an on-call support rota following an initial onboarding and handover period. What technical skills does Leidos need from me? Strong, demonstrable experience with data centre and campus networking technologies, including: Cisco (routers, switches, firewalls) Fortinet firewalls Palo Alto firewalls Juniper (routers, switches, firewalls) F5 / Citrix In-depth understanding of network protocols, including: Routing: OSPF, BGP, EIGRP, Static Switching: VLAN / 802.1Q, (R/M)STP, Port Security, Layer 3 switching, LACP / EtherChannel VPLS, VPN, PKI, and load balancing Experience implementing and supporting AAA services, including TACACS, within secure or regulated environments. Proven experience operating high-availability data centre networks. Hands-on experience with monitoring and management tooling such as SolarWinds, PRTG, and Panorama. Good working knowledge of Windows Server environments, including Active Directory, DNS, and DHCP. Desirable Skills and Experience Experience working with AWS networking services in secure or regulated environments, including hybrid on-prem to cloud connectivity. Exposure to cloud-integrated or hybrid network architectures. Required Personal Skills Excellent documentation skills, with the ability to produce clear, accurate, and auditable technical artefacts suitable for secure environments. Self-starter mentality, able to work independently, take ownership of tasks, and proactively identify and resolve issues. Strong analytical and problem-solving capability, with the ability to manage complex technical issues in secure environments. Excellent written and verbal communication skills. High levels of organisation, ownership, and attention to detail. Ability to work confidently in customer-facing roles and within security-restricted sites. Security Clearance Requirements This role requires UK Security Check (SC) clearance or the ability to obtain it. Candidates must be UK nationals and have appropriate UK residency history to meet security vetting requirements. The role involves working on secure customer sites, where on-site attendance is mandatory. What we do for you: At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work-life balance. We provide an employment package that attracts, develops and retains only the best in talent. Our reward scheme includes: - Contributory Pension Scheme - Private Medical Insurance - 33 days Annual Leave (including public and privilege holidays) - Access to Flexible benefits (including life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme) - Flexi-Time Working Commitment to Diversity: We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture. We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone. If you have a disability or need any reasonable adjustments during the application and selection stages please let us know, and we will respond in a way that best fits your needs. Who We Are: Leidos UK & EUROPE (http://www.leidos.com/company/global/uk-europe) - we work to make the worldsafer,healthier, andmore efficient through technology, engineering andscience. Leidos is a growing company delivering innovative technology and solutions focused on safeguarding critical capabilities and transformation in frontline services, our work in the United Kingdom includes addressing some of the most complex problems in defence, healthcare, government, safety and security, and transportation. What Makes Us Different: Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe. We are at the forefront of machine learning, AI, cyber security and solutions. Using your skills in the technology frontline by helping to build a safer world. You can _inspire_ change. Collaboration: having _flexibility_ to do your job is one of our core benefits, enabling you to become part of our extraordinary team. We have been empowering our people to work flexibly for years. Whether you work from home, the office or on customer sites, we will give you the digital tools and the flexibility to work smarter and align your needs and ours. People: Leidos _empowers_ people from every background to be themselves and gives you the tools to learn new skills by _enabling growth_ _whilst developing_. We believe that extraordinary people need opportunities to grow, to _be inspired_ and to inspire others. At Leidos, we invest in technical academies, career rotations and a career development plans that enhance your future. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. Original Posting: For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: £44,700.00-£57,300.00 The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com. Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits. Securing Your Data Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission (https://reportfraud.ftc.gov//). Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws. REQNUMBER: R-00178824 All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.