Why pre-screen network architects before the technical panel
Anyone can draw a resilient network. The test is what happened when a link dropped at a bad moment, whether failover worked as designed, and whether the documentation matched reality by the time somebody needed it at two in the morning. Architects worth hiring have been on the wrong end of one of their own designs. A short screen asks what failed.
What actually matters when screening Network Architect candidates
- 01
Technical depth
Check depth on BGP path selection, OSPF area design, VXLAN/EVPN fabrics, MPLS L3VPN and QoS policy; ask which IOS-XE, NX-OS, Junos or Arista EOS platforms they configured directly.
- 02
Work that shipped
Probe designs they carried to production: campus refreshes, spine-leaf builds, SD-WAN migrations, firewall segmentation. Ask for site counts, throughput, cutover windows and HLD/LLD documents they authored.
- 03
Diagnosis under uncertainty
Test troubleshooting of intermittent faults: asymmetric routing, microbursts, MTU black holes, flapping adjacencies. Ask how they used packet captures, NetFlow, SNMP baselines or ThousandEyes to isolate cause.
- 04
Working across the org
Assess dealings with security, cloud, application and vendor teams: firewall change reviews, ExpressRoute or Direct Connect handoffs, capacity forecasts, budget cases and carrier escalations.
Pre-screening questions to ask Network Architect candidates
12 questions grouped by what they test. Ask the same set in every screen and score answers on a consistent scale, or send them as an async video screen and compare answers side by side.
Designs that were built
3 questions01What is your experience designing and implementing network infrastructure?
Listen forDesigns that were built and operated, with scale, sites and their own role described clearly.
Designs that stayed on paper, or a role limited to reviewing somebody else's drawings.
02Which types of network architecture are you most familiar with?
Listen forCampus, wide area and wireless experience described with the design constraints of each understood.
Everything described as the same problem, or experience narrower than the role requires.
03Can you discuss your experience producing network designs and documentation?
Listen forDocumentation kept current so operations teams can use it during an incident, not just at handover.
Documentation produced once for sign-off, or diagrams that no longer match the live network.
Detail holds up
4 questions04What are your steps when designing a new network from planning to implementation?
Listen forRequirements and traffic patterns gathered first, with migration and cutover planned before build.
Design driven by preferred vendor, or cutover planning left until the equipment arrives.
05Do you have experience with cloud networking?
Listen forHybrid connectivity designed with routing, addressing and egress cost all considered together.
Cloud treated as another data centre, or egress charges discovered after go-live.
06Can you discuss your experience with routing, switching and network protocols?
Listen forProtocol behaviour explained accurately, including convergence and how it fails under load.
Protocols known by configuration syntax only, or convergence behaviour unclear.
07Are you experienced in producing detailed network diagrams and design documents?
Listen forLogical and physical views both produced, at a level an implementer can build from without asking.
Diagrams that omit addressing and interfaces, or designs needing constant clarification.
Resilience designed in
3 questions08How familiar are you with load balancing and failover design?
Listen forFailover tested rather than assumed, with the failure modes it does not cover named honestly.
Redundancy assumed to work, or failover never exercised outside a maintenance window.
09What have you done to meet security and data privacy needs through network design?
Listen forSegmentation and access control designed in from the start, with data flows mapped first.
Security added after the design, or flat networks defended by a perimeter firewall alone.
10What is your process for disaster recovery and continuity planning?
Listen forRecovery objectives agreed with the business, and the plan tested rather than written and filed.
Recovery plans never exercised, or objectives set without asking what the business can tolerate.
Learned from failure
2 questions11Can you describe a significant challenge in a network you designed or maintained?
Listen forA real failure with the root cause found, and the design changed as a result.
Challenges attributed entirely to vendors, or no design change following an incident.
12How do you evaluate network performance and keep it acceptable?
Listen forBaselines captured before changes, with performance measured from the user rather than the switch.
Performance judged by interface counters alone, or no baseline to compare against.
How to score responses
Score every candidate on the same four criteria immediately after the screen. At this stage you are shortlisting for panel interviews, not making the final call.
Technical depth
35%5Explains route reflector and EVPN design choices with real config detail, cites MTU, convergence timers and platform scaling limits from memory.
Work that shipped
30%5Names specific builds with node counts, bandwidth figures and maintenance windows, and owns the low-level design plus post-cutover validation results.
Diagnosis under uncertainty
20%5Walks a real outage from symptom to root cause with capture evidence, distinguishes correlation from cause, and describes the permanent fix applied.
Working across the org
15%5Describes negotiating segmentation or peering design with security and cloud teams, plus a vendor or budget decision they justified and won.
A design is judged when a link drops at a bad moment. A one-way video screen asks what failed and why.
Try it on HirevireScreening FAQ
Process basics
How long should a pre-screening round for this role take?
Fifteen minutes across eight to ten questions, answered async. Enough to establish networks they designed, test the depth of the design detail, and check their resilience and security thinking.
How does this differ from a network engineer screen?
Engineers are judged on operating and fixing the network. Architects are judged on decisions that constrain everyone else for years, so weight design rationale and failure planning more heavily here.
Evaluating answers
What is the strongest signal when screening this role?
A failure in something they designed. Real architects describe what broke, why the design allowed it and what they changed. Anyone whose designs never failed has not operated them.
How much should certifications count?
They confirm structured knowledge and are worth noting on a shortlist. What predicts performance is a network they designed, built and then supported through a real incident.
Go deeper on this role
Sanat has been hiring since 2012 and watching the recruitment industry change up close ever since, and turned that screening process into Hirevire's video screening platform. LinkedIn
