American Express Global Business Travel
Senior Network Architect
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Amex GBT
Amex GBT is a place where colleagues find inspiration in travel as a force for good and – through their work – can make an impact on our industry. We’re here to help our colleagues achieve success and offer an inclusive and collaborative culture where your voice is valued.
The Senior Network Architect
The Senior Network Architect designs and governs complex network architectures across on-prem, cloud, and hybrid environments. The role works in close partnership with Information Security, translating security requirements into scalable, resilient network and connectivity solutions.
What you'll do:
- Design and architect enterprise networks across WAN, LAN, data center, and cloud environments, translating business and security requirements into scalable, implementable designs with appropriate routing, switching, and connectivity patterns.
- Own network capacity planning, technology lifecycle roadmap, and refresh cycles; define automation and observability standards using infrastructure-as-code tools (Ansible, Terraform) and monitoring platforms.
- Produce architectural artifacts (HLD/LLD, ADRs, reference architectures) and lead vendor evaluation and technology roadmapping.
- Partner with InfoSec to implement security controls, Zero Trust principles, and segmentation using Palo Alto NGFW and Prisma Access solutions.
- Serve as senior SME for BGP, OSPF, MPLS, SD-WAN, and internet-based WAN architectures; design hybrid connectivity using Equinix Fabric integrated with cloud providers and Prisma Access.
- Troubleshoot complex multi-vendor, multi-cloud traffic-flow and routing issues; guide Network Engineering teams through implementation and design reviews.
- Design and govern cloud network architectures (AWS/Azure) including VNet/VPC design, transit architecture, and cloud-native connectivity patterns with secure on-prem and SD-WAN integration.
- Mentor senior engineers, support capability development, and collaborate across Network, InfoSec, Cloud, and Infrastructure teams for cohesive outcomes.
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What we're looking for:
Experience
- 10+ years of enterprise networking experience, including a minimum of 3 years in an architecture or principal engineering role.
- Demonstrated experience operating in large, multinational enterprise environments.
Technical Expertise
- Strong routing and switching background — BGP required; OSPF required.
- Hands-on experience with Palo Alto NGFW and Prisma Access.
- SD-WAN architecture and Equinix Fabric experience.
- Cloud networking experience AWS & Azure.
- Familiarity with Zero Trust principles and their application in network architecture.
- Experience with network automation and IaC tooling (Ansible, Terraform, or equivalent).
- Experience implementing security platforms per InfoSec guidance.
Soft Skills:
- Executive stakeholder communication (VP/C-level); ability to translate complex network architecture into business risk and investment terms.
- High-quality technical documentation — HLD, LLD, ADRs, and reference architectures.
- Risk assessment and sound decision-making under ambiguity.
Certifications (one or more of the following):
- CCNP (Enterprise, Service Provider, or equivalent)
- CCIE (Enterprise Infrastructure, Service Provider, or equivalent)
- PCNSE (Palo Alto Networks Certified Network Security Engineer)
Location
- United Kingdom
The #TeamGBT Experience
Work and life:
- Find your happy medium at Amex GBT.
- Flexible benefits are tailored to each country and start the day you do. These include health and welfare insurance plans, retirement programs, parental leave, adoption assistance, and wellbeing resources to support you and your immediate family.
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Travel perks:
- Get a choice of deals each week from major travel providers on everything from flights to hotels to cruises and car rentals.
Develop the skills you want when the time is right for you, with access to over 20,000 courses on our learning platform, leadership courses, and new job openings available to internal candidates first.
We strive to champion Inclusion in every aspect of our business at Amex GBT. You can connect with colleagues through our global INclusion Groups, centered around common identities or initiatives, to discuss challenges, obstacles, achievements, and drive company awareness and action.
And much more!
Equal Employment Opportunity
All applicants will receive equal consideration for employment without regard to age, sex, gender (and characteristics related to sex and gender), pregnancy (and related medical conditions), race, color, citizenship, religion, disability, or any other class or characteristic protected by law.
Additional Disclosures
Click Here for Additional Disclosures in Accordance with the LA County Fair Chance Ordinance.
Reasonable Accommodation
Furthermore, we are committed to providing reasonable accommodation to qualified individuals with disabilities. Please let your recruiter know if you need an accommodation at any point during the hiring process.
For details regarding how we protect your data, please consult the Amex GBT Recruitment Privacy Statement.
What if I don’t meet every requirement?
If you’re passionate about our mission and believe you’d be a phenomenal addition to our team, don’t worry about “checking every box;" please apply anyway. You may be exactly the person we’re looking for!
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