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It Infrastructure Engineer Interview Questions

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3,415 it infrastructure engineer interview questions shared by candidates

Networking/VLAN question Example: Give me an idea how you designed on prem network. Context: They suggested subnetting sufficient VLANs were unnecessary, which conflicts with best practices in on-prem environments. SAML backend question Example: How does SAML work at the backend? How is it architected internally? Context: You expected questions about integrating apps with an IdP using SAML, but they asked about deep protocol architecture.
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Senior IT Infrastructure Engineer

Interviewed at Octane

3.5★
Dec 20, 2025

Networking/VLAN question Example: Give me an idea how you designed on prem network. Context: They suggested subnetting sufficient VLANs were unnecessary, which conflicts with best practices in on-prem environments. SAML backend question Example: How does SAML work at the backend? How is it architected internally? Context: You expected questions about integrating apps with an IdP using SAML, but they asked about deep protocol architecture.

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