Network Architect Job Description

A Network Architect decides what an organization's network should look like several years out, then writes that decision down precisely enough that other people can build it. The job also goes by Computer Network Architect, the name BLS uses for the occupation. In the information technology industry, architects work in enterprise IT departments, at managed service providers and system integrators, at cloud and hosting companies, and at consulting firms that design networks for clients.

The scope covers every place traffic moves. That means campus switching and wireless in office buildings, branch connectivity over SD-WAN or MPLS, the leaf-spine fabric inside a data center, the internet edge with its firewalls and DDoS protection, and the virtual networks, transit hubs and private interconnects that tie on-premises systems to AWS, Microsoft Azure or Google Cloud tenants. One architect may own all of it at a midsize company, while a large enterprise may split the work into campus, data center, cloud and security network specialties.

The core output is design documentation. A high-level design explains the target state: which routing protocols run where, how the network is divided into segments, where traffic gets inspected, and how the design behaves when a link, device or whole site fails. A low-level design turns that into address plans, VLAN and VRF assignments, BGP communities and route policies, and device configuration templates. Around those sit standards documents, reference architectures for repeatable builds such as a new branch office, and architecture decision records that explain why one option won, so the reasoning survives after the people who made the call have moved on.

Much of the week is spent in conversations rather than at a console. Application teams arrive with requirements for latency, bandwidth or availability. Security architects need segmentation that matches their access policy. Finance wants to know whether a hardware refresh can wait another year. Vendors pitch platforms, and the architect runs the evaluation: proof-of-concept testing in a lab, reference calls with existing customers, total cost estimates, and a written list of what each product cannot do.

Architects also act as the review gate for change. Large projects and nonstandard requests come to them for design review before work starts, and they decide whether an exception to the standard is acceptable and for how long. After a major outage, the architect may join the post-incident review to judge whether the failure exposed a weakness in the design rather than a slip in operations.

Good architects keep enough hands-on skill to stay credible with the engineers who will implement their designs. They read configurations, sit in on lab tests, and pull packet captures when a design behaves differently in testing than it did on the whiteboard. That grounding is what lets an architect push back on a vendor claim or an unrealistic project deadline with evidence instead of opinion.

BLS lists a bachelor's degree as the typical entry-level education for computer network architects, generally in a computer-related field. As a rough guide, useful majors include computer science, information systems, and computer or electrical engineering. BLS also notes that some employers consider candidates without a bachelor's degree, some express no preference, and others prefer a master's degree.

Work history carries real weight for this title. BLS lists 5 years or more of work experience in a related occupation as typical, and says network architects often have backgrounds as network and computer systems administrators or in related roles such as database administrator or computer systems analyst. O*NET places the occupation in Job Zone Four, its band for jobs that need considerable preparation. As a rough guide, expect a path through network engineering: operations and troubleshooting first, then project design work, then ownership of standards and target designs for a whole environment.

Certifications

BLS says employers may require or prefer that network architects be certified in the products they use, and that certification programs come from vendors or from vendor-neutral providers. Cisco's certification for network design is the CCDE (Cisco Certified Design Expert). It starts with the 400-007 written exam, a 2-hour multiple-choice test of 90-110 questions that Cisco says checks whether a candidate can gather and clarify requirements, design to them, develop implementation plans, and convey design decisions and their rationale. The CCDE practical exam v3.1 is a scenario-based, 8-hour exam covering core enterprise network architectures plus one elective chosen by the candidate. The electives are AI Infrastructure, Large Scale Networks, On-Prem and Cloud Services, and Workforce Mobility, and each is an expert specialist certification. Cisco describes the AI Infrastructure elective as showing the ability to design, provision and optimize networks and compute power for AI workloads.

Other credentials worth pursuing depend on the environment:

• CCIE Enterprise Infrastructure (Cisco), for deep implementation skill in campus and WAN networks
• Microsoft Certified: Azure Network Engineer Associate (Microsoft), for Azure networking
• Professional Cloud Network Engineer (Google Cloud), for Google Cloud networks
• CISSP (ISC2), for architects whose designs carry heavy security requirements

Core skills

Protocol depth is the base: BGP, OSPF and IS-IS, EVPN-VXLAN fabrics, QoS, IPv6 addressing, and IPsec and TLS. On top of that sit cloud networking constructs, automation skills in Python, Ansible or Terraform, and the habit of testing designs in a lab before committing to them. Writing is part of the job, too: a design that cannot be explained clearly to engineers, auditors and executives will stall in its first review meeting.

BLS projects employment of computer network architects to grow 8 percent from 2025 to 2035, a rate it classifies as much faster than the average for all occupations. The occupation held about 181,800 jobs in 2025, and BLS projects about 9,600 openings a year on average across the decade. Many of those openings, BLS says, will come from replacing workers who move to other occupations or leave the labor force, for example to retire.

BLS points to two sources of demand. Firms keep designing and building new IT networks and upgrading the ones they have, and the continued expansion of cloud computing adds work making sure networks are properly designed and that moves to new networks go smoothly. For an architect, that work takes the form of migrations and redesigns: data center exits, cloud landing zones, WAN replacements and campus refreshes.

Fabrics built for AI clusters

Since June 2025, Ethernet fabrics for AI and HPC clusters have had a published industry specification. On June 11, 2025 the Ultra Ethernet Consortium, a consensus-based standards organization operating under the Linux Foundation, published Ultra Ethernet Specification v1.0. The specification targets four workloads: AI training, AI inference, high-performance computing, and client/server traffic such as storage. It defines Ultra Ethernet Transport along with mappings of DSCP values to traffic classes for that transport.

For architects at cloud providers, hosting firms and enterprises building GPU clusters, this is design territory. A training cluster's back-end fabric has its own questions about oversubscription, congestion control, failure domains and optics, separate from the front-end network that users and storage clients reach. Knowing what the specification covers, and what a given switch or NIC actually implements, belongs in any platform evaluation for that kind of build.

Zero trust in the network layer

Federal zero trust guidance speaks directly to topology. In June 2025 NIST published SP 1800-35, Implementing a Zero Trust Architecture, which explains how organizations can implement zero trust consistent with the principles in NIST SP 800-207. NIST's National Cybersecurity Center of Excellence worked with 24 collaborators under cooperative research and development agreements to integrate commercially available technology into 19 example zero trust implementations. The guide addresses enterprise resources distributed across on-premises and multiple cloud environments, the same hybrid estate a Network Architect designs. The guide includes detailed technical information on each example build, which gives architects working reference designs rather than principles alone.

That puts segmentation, policy enforcement points and identity-aware access squarely in the network design, not bolted on after it. Architects who can map a NIST example build onto their own routing, firewall and SD-WAN layout give security teams a design they can test.

Dear Hiring Manager,

I am applying for the Network Architect position on your infrastructure architecture team. For the past four years I have been the senior network engineer at a regional logistics company with 60 warehouses, two data centers and a growing footprint in Microsoft Azure, and for the last two of those years I have effectively owned the network design while my title caught up.

My largest project was replacing our MPLS WAN with SD-WAN across every site. I wrote the high-level design, built the branch reference architecture that became our standard, and ran a three-vendor proof of concept that ended with a recommendation our CIO approved on the first pass. I planned the cutover in waves, wrote the rollback plan for each one, and we finished the migration without a single unplanned warehouse outage during peak season.

I also designed our hybrid cloud connectivity: redundant ExpressRoute circuits, a hub-and-spoke transit model, and route filtering that keeps the Azure tenants from learning paths they should never use. When our security team began its zero trust program, I mapped their access policy onto VRF segmentation and firewall placement so the design could be tested before a single rule changed in production.

I write every design so an engineer on the night shift can implement it and an auditor can follow it. I keep my hands on the gear in a home lab and in our staging environment, and I am currently preparing for the CCDE written exam.

Your team's plan to consolidate data centers and build out a cloud landing zone is exactly the kind of work I want to own from the first whiteboard sketch to the final review. I would welcome the chance to walk you through my SD-WAN design package.

Sincerely, Jordan Alvarez