Principal Engineer - Fortinet in Farnborough, Hampshire

When you join our Engineering Team at Telent, you'll be empowered to innovate and drive common solutions, working closely with technical experts who are proud of the impact their work makes. Come join a high-performing team doing complex and critical work. Help build and keep the nation's critical infrastructure connected and protected 24/7.

Reporting into the Head of Focal Engineering, the Fortinet Principal Engineer will be responsible for leading the design and delivery of secure, high-performance Fortinet SD-WAN solutions for our enterprise and public sector customers. This is a hybrid working role, with a requirement to be in our Farnborough office around 2 days per month. Other travel may be required on an ad-hoc basis.

What you'll do:

• Lead the end-to-end design of secure SD-WAN solutions using Fortinet Secure SD-WAN.
• Define scalable, resilient architectures tailored for enterprise and public sector clients.
• Ensure alignment with customer requirements, SLAs, and regulatory standards.
• Act as the subject matter expert (SME) for Fortinet SD-WAN technologies.
• Provide guidance and mentoring to engineers and architects across projects.
• Drive best practices in network design, security integration, and automation.
• Act as the last line technical lead to resolve technical problems, either design or support related problems.
• Assist in the build and design of Proof-of-Concept scenarios, Type Approval activities in the Telent labs and support in the creation of test type documentation and test scenarios.

Who you are:

You are an experienced network and security professional with deep expertise in designing and delivering complex Fortinet SD-WAN solutions. You have a strong background in enterprise networking and a proven track record of leading technical design from concept through to implementation.

Key Requirements:

• Expert knowledge of SD-WAN technologies, particularly Fortinet Secure SD-WAN (FortiGate, FortiManager, FortiAnalyzer).
• Fortinet Expert Certification (FCSS).
• Fortinet SD-WAN design and delivery experience.
• Deep understanding of network security principles (firewalls, VPNs, segmentation, zero trust concepts).
• Experience designing large-scale, resilient, multi-site network architectures.
• Strong ability to produce HLDs, LLDs, and technical design documentation.
• Excellent troubleshooting and performance optimisation skills.
• Strong stakeholder management and communication skills (technical and non-technical audiences).

What we offer:

A career at Telent can span many sectors, roles, technologies and clients giving you the opportunity to develop, learn new skills and make an impact. We are growing and we rely on our committed Team to deliver. We nurture the talent that makes this happen, by our on-going commitment to creating an inclusive culture that respects and values difference, that celebrates diverse ideas. We want everyone to feel they can be themselves and to thrive at work.

The additional benefits with this role:

• 34 days holiday, including public holidays, plus the option to buy or sell days annually OR 26 days holiday, plus public holidays, and the option to buy or sell days annually.
• Company pension scheme.
• A range of family friendly policies.
• Occupational health support and wellbeing Portal.
• Discounts on Cinema, Restaurants and Shopping with Telent Reward scheme.

Learn more about Telent: We're passionate about creating an environment that champions diversity and inclusion, where everyone feels they belong, can be themselves and empowered to reach their full potential. People are at the heart of our business, and we believe that our teams should reflect the diverse experiences and backgrounds of the communities we support.