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Infrastructure Engineer interview questionsTechnical Interview round
A 60 min interview plan with a time-boxed script, what each question is for, and the signals to score against. Key skills: Infrastructure Design, Technical Expertise, Networking, Virtualization, Cloud Services.
Infrastructure Design
10 min
What this section is for
Purpose
Assess understanding of infrastructure design principles and best practices.
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Can you describe a time when you designed an infrastructure solution from scratch? What were the key considerations?
What this question is for, and what to listen for
Purpose
Evaluate experience in designing infrastructure solutions.
Signals to score
- Clear explanation of design process
- Consideration of scalability
- Security measures discussed
- Cost-effectiveness considered
- Use of best practices
- Collaboration with stakeholders
- Problem-solving approach
Follow-up questions
- What were the main challenges you faced?
- How did you ensure scalability?
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How do you ensure high availability and disaster recovery in your infrastructure designs?
What this question is for, and what to listen for
Purpose
Assess knowledge of high availability and disaster recovery strategies.
Signals to score
- Use of redundancy
- Backup strategies
- Failover mechanisms
- Regular testing of DR plans
- Monitoring and alerting systems
- Understanding of RTO and RPO
- Experience with DR drills
Follow-up questions
- What tools do you use for monitoring?
- How do you test your DR plans?
Technical Expertise
10 min
What this section is for
Purpose
Evaluate technical skills and problem-solving abilities.
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What tools and technologies do you use for infrastructure automation?
What this question is for, and what to listen for
Purpose
Assess familiarity with automation tools and technologies.
Signals to score
- Mention of popular tools (e.g., Terraform, Ansible)
- Understanding of scripting languages
- Experience with CI/CD pipelines
- Use of version control systems
- Knowledge of configuration management
- Automation of repetitive tasks
- Experience with cloud automation
Follow-up questions
- How do you handle configuration management?
- Can you give an example of a task you automated?
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Describe a challenging technical problem you faced and how you resolved it.
What this question is for, and what to listen for
Purpose
Assess problem-solving skills and technical expertise.
Signals to score
- Clear problem statement
- Logical approach to resolution
- Use of troubleshooting tools
- Collaboration with team members
- Learning from the experience
- Documentation of the solution
- Positive outcome achieved
Follow-up questions
- What steps did you take to identify the issue?
- How did you involve your team?
Networking and Virtualization
10 min
What this section is for
Purpose
Assess understanding of networking and virtualization concepts.
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How do you approach network design for a new infrastructure project?
What this question is for, and what to listen for
Purpose
Evaluate knowledge of network design principles.
Signals to score
- Consideration of network topology
- Security measures implemented
- Scalability and performance
- Use of VLANs and subnets
- Redundancy and failover
- Collaboration with network team
- Documentation of design
Follow-up questions
- What security measures do you implement?
- How do you ensure scalability?
•
What virtualization technologies have you worked with, and how do you manage virtual environments?
What this question is for, and what to listen for
Purpose
Assess experience with virtualization technologies.
Signals to score
- Mention of popular technologies (e.g., VMware, Hyper-V)
- Experience with virtual machine management
- Use of virtualization for resource optimization
- Understanding of hypervisors
- Experience with virtual networking
- Backup and recovery of VMs
- Performance monitoring
Follow-up questions
- How do you optimize resource usage?
- What tools do you use for VM management?
Cloud Services
10 min
What this section is for
Purpose
Evaluate knowledge of cloud services and infrastructure management.
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What cloud platforms have you worked with, and how do you manage cloud resources?
What this question is for, and what to listen for
Purpose
Assess experience with cloud platforms and resource management.
Signals to score
- Mention of popular platforms (e.g., AWS, Azure)
- Experience with cloud resource provisioning
- Use of cloud management tools
- Understanding of cost management
- Security and compliance measures
- Automation of cloud tasks
- Monitoring and scaling
Follow-up questions
- How do you handle cost management?
- What tools do you use for monitoring?
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How do you ensure security and compliance in cloud environments?
What this question is for, and what to listen for
Purpose
Assess knowledge of cloud security and compliance.
Signals to score
- Use of IAM policies
- Encryption of data
- Regular security audits
- Compliance with standards
- Monitoring and logging
- Incident response plans
- Collaboration with security team
Follow-up questions
- What compliance standards do you follow?
- How do you handle security incidents?
Closing
5 min
What this section is for
Purpose
Thanks the candidate for their time, provides next steps, and leaves a positive final impression.
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Do you have any questions for me about the team or the company?
What this question is for, and what to listen for
Purpose
Gauge the candidate’s curiosity and interest in the role.
Signals to score
- Thoughtful questions asked
- Interest in company culture
- Curiosity about growth expressed
- Questions about role raised
- Inquiries about team challenges
- Engagement with responses shown
- Desire to learn next steps
Follow-up questions
- What interests you most about this team?
- Are there any areas of the role you’d like to explore further?
Infrastructure Engineer interviews — common questions
- Who is this Infrastructure Engineer interview plan for?
- It is written for the interviewer, not the candidate: the hiring manager, engineer or panel member running the Technical Interview round for a Infrastructure Engineer role. It gives you a 60 min script to follow in the conversation — 9 questions with what each one is for and the signals to score against — so you are not writing the round from scratch the night before.
- What does the Technical Interview round assess?
- This round is focused on: Infrastructure Design, Technical Expertise, Networking, Virtualization, Cloud Services. It works through Infrastructure Design, Technical Expertise, Networking and Virtualization, Cloud Services and Closing, scoring against 63 observable signals, with follow-up prompts on all 9 questions for going deeper where an answer is thin.
- How is the 60 min split up?
- Infrastructure Design (10 min), Technical Expertise (10 min), Networking and Virtualization (10 min), Cloud Services (10 min), Closing (5 min). The timings are there so the round stays on schedule and every candidate gets the same shape of interview — which is what makes two candidates comparable afterwards.
- What other rounds should I run for a Infrastructure Engineer?
A single round does not cover a whole role. The other rounds in this library for a Infrastructure Engineer: