Network Design Engineer

Capgemini; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid Working

Disability Confident Employer (UK)

Digital learning platforms

Employee networks: OutFront / CapAbili

Women@Capgemini

Job summary

Capgemini is shaping complex carrier-grade network solutions for clients. You will design, review, and validate networks using ISIS/MPLS/QoS while integrating Fortigate, Nokia 7750, and F5 platforms. Collaboration with security, operations, and delivery teams is essential to deliver robust, scalable architectures.

You will also drive automation, develop design artefacts, and support case preparation and governance through proactive communication and risk management.

Qualifications

• Experience designing carrier grade network solutions for service providers.
• Exposure to ISIS, MPLS, RSVP, TE, and QoS concepts in large networks.
• Knowledge of Fortigate firewalls and Nokia routers/switches.

Responsibilities

• Author high/low level design documents to support client networks.
• Own hardware/software selection and perform bug scrubs with dev and test teams.
• Drive platform improvements and implement automation for DevOps goals.
• Elicit business and technical requirements with partners during design phases.
• Communicate risks, obtain sign-off, and provide weekly project updates.

Skills

Carrier grade network design

Service provider technologies

Fortigate firewalls

Nokia 7750

ISIS / MPLS

RSVP / TE / QOS

LACP / BGPN

Python

GIT

F5 LTM/GTM

Mobile 5G technologies

Tools

Fortigate

Nokia 7750

F5 LTM/GTM

Python

Git

Job description

Your RoleAuthor High Level and Low Level Design Documents to support client's networkOwn 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 standardsGood experience with service provider technologies for supporting carrier routing, switching and securityElicit 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 solutionsSteer 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 ProfileExperience working for a Service ProviderCompetent in designing carrier grade network solutions for projects, complying with Sky’s design standardsGood experience with service provider technologies for supporting carrier routing, switching and securityStrong understanding of Reliability matrix, availability matrix, longevity of design, commercial aspect of solutionsDemonstrable document writing skills in producing artefacts such as HLD and LLD, presentation and technical diagrams as part of project engagementsPossess excellent communication skills to convey Risks, obtain sign-off, timely escalate issues to management, and send weekly project updatesExposure to Next Generation firewall technologies i.e. Fortigate FirewallsStrong understanding of distributed hardware architecture and hands-on experience with Nokia 7750Strong experience on ISIS, MPLS, RSVP, TE, Hierarchical QOS, LACP, BGPNice to have:Knowledge of Python and GIT to manage configuration templates and develop Automation solutionsKnowledge of F5 LTM/GTM (or other load balancing) and Mobile 5G technologiesIf 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 Bricklane 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