Network Design Engineer - Fortinet

Capgemini; Greater London; Hybrid; GBP 70,000 - 97,000; Full time

Benefits offered by this job

Disability Confident Employer (Level 2

Digital learning platforms

Diversity networks (OutFront, CapA b i

Women@Capgemini

Job summary

Capgemini in London seeks an experienced Network Architect to design carrier-grade network solutions and drive automation. You will author HLD/LLD, review test artifacts, and collaborate with Test and Delivery engineers to ensure secure, scalable deployments.

The role requires experience with service provider technologies, strong documentation skills, and hands-on Cisco IOS-XE/XR, Palo Alto and Fortinet platforms. Hybrid work in London with client onsite presence.

Qualifications

• Experience designing carrier-grade network solutions.
• Experience with service provider technologies for carrier routing, switching and security.
• Strong documentation writing for HLD/LLD and technical diagrams.

Responsibilities

• Author high-level and low-level design documents for client networks.
• Elicit business and technical requirements with partners during requirements collection.
• Select hardware/software, perform bug scrubs and security assessments with Test and Delivery teams.
• Review test plans, defects, test reports, MOP and change tickets.
• Drive platform improvements and automation to enable DevOps capabilities.

Skills

Network design

Carrier-grade networks

Communication skills

Documentation writing

Education

CCNA certification

CCNP certification

CCIE certification preferred

Tools

Cisco IOS-XE

Cisco IOS-XR

Palo Alto Firewalls

FortiGate

FortiManager

FortiAnalyser

Nokia 7750

Job description

Your Role• Author High Level and Low Level Design Documents to support client's network• Own software/hardware selection perform bug scrubs and security vulnerability assessments and work with Test and Delivery engineers to review test plans, defects, test reports, MOP and change tickets.• Drive platform improvements enable automation and implement new solutions that enable DevOps capabilities and support business strategy of building once and deploy multiple time.• Competent in designing Carrier grade network solutions for projects, complying with client's design standards• Good experience with service provider technologies for supporting carrier routing, switching and security• Elicit business and technical requirements working with various partners during requirements collection phase.• Strong understanding of Reliability matrix, availability matrix, longevity of design, commercial aspect of solutions• Steer network security elements’ feature roadmap by working closely with our strategic technology partners for software release planning, budget submissions and provide inputs for case preparation.Your Profile• Experience working for a Service Provider• Competent in designing carrier grade network solutions for projects, complying with client's design standards• Good experience with service provider technologies for supporting carrier routing, switching and security• Strong understanding of Reliability matrix, availability matrix, longevity of design, commercial aspect of solutions• Demonstrable document writing skills in producing artefacts such as HLD and LLD, presentation and technical diagrams as part of project engagements• Possess excellent communication skills to convey Risks, obtain sign-off, timely escalate issues to management, and send weekly project updates• Deep knowledge about routers, switches and firewalls from different vendors in live environments• CCNA, CCNP Certifications desired; CCIE preferred• Strong working experience with Cisco routers – IOS-XE and IOS-XR based• Solid grasp of firewall architecture, policies and working experience with Palo Alto Firewalls• Extensive experience on ISIS, BGP, MPLS, L2VPN, L3VPN, RSVP, TE, Hierarchical QOS, LACP, IPv6Nice to have:• Ability to apply Open-config and Vendor specific NETCONF-YANG models, JSON and XML payload for network automation to configure and manage firewalls• Knowledge of Python, Ansible and GIT to manage configuration templates and develop Automation solutions• Understanding of distributed hardware architecture and hands-on experience with Nokia 7750• Knowledge of FortiGate, F5 LTM/GTM (or other load balancing) and Mobile 5G technologies• Fortinet NSE4 certification and hands-on experience of FortiGate firewalls, FortiAnalyser and FortiManagerIf you're excited about this role but don’t meet every requirement, we stillencourage you to apply, your uniqueexperience could be just what we need.Make it real – what does it mean for you?Exposure to top global companies working withCapgemini (145 of the Fortune 500 companies)Open access to digital learning platformsActive employee networks promoting diversity, equity and inclusion like OutFront, CapAbility or Women@CapgeminiCapgemini is proud to be a Disability Confident Employer (Level 2) under the UK Government’s Disability Confident scheme. As part of our commitment to inclusive recruitment, we will offer an interview to all candidates who:Declare they have a disability, andMeet the minimum essential criteria for the role.Please opt in during the application process.Capgemini. Make it real.Need to knowAll roles will require a level of security clearance; BPSS OR Security Clearance OR Developed Vetting.Location: LondonHybrid Working: This is a permanent role with Capgemini, offering a hybrid working model. Regular onsite presence of 2 days per week at cient site in Brick Lane, London will be required.You can bring your whole self to work. At Capgemini building an inclusivefuture is part of everyday lifeand will be part of your working reality. We havebuilt a representative and welcoming environment, foreveryone.About CapgeminiCapgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion.Make it real | www.capgemini.com