Site Reliability Engineer

Description

Join our SRE team to ensure the reliability, performance, and scalability of our production systems. You will be responsible for defining and monitoring SLOs/SLIs, responding to incidents, conducting post-mortems, and implementing automation to reduce toil. The ideal candidate has strong experience with distributed systems, monitoring tools (Prometheus, Grafana), cloud platforms, and programming skills (Python, Go). You will balance feature development with operational work, implement chaos engineering practices, and drive continuous improvement in system reliability.

Interview Questions (96)

Q1What is the CAP theorem and how does it apply to distributed systems?
Technical
Q2Explain the concept of eventual consistency in distributed systems.
Technical
Q3Explain how load balancing works and different load balancing strategies.
Technical
Q4What is the difference between horizontal and vertical scaling?
Technical
Q5How does DNS work and what happens when you type a URL in the browser?
Technical
Q6How would you troubleshoot a production outage?
Technical
Q7Describe a challenging bug you debugged and how you approached it.
Behavioral
Q8How do you handle stress and pressure in the workplace?
Behavioral
Q9Tell me about your experience with monitoring and observability tools.
Experience
Q10Describe your experience with performance optimization.
Experience
Q11Tell me about your experience managing production incidents.
Experience
Q12How would you handle a situation where a production system goes down at 2 AM?
Situational
Q13What would you do if you discovered a security vulnerability in production?
Situational
Q14What would you do if a critical production bug was reported minutes before you're supposed to leave for vacation?
Situational
Q15What would you do if a junior developer made a mistake that caused a production incident?
Situational
Q16How does the team handle production incidents?
Reverse
Q17How would you implement a distributed cache?
Technical
Q18How would you implement blue-green deployment?
Technical
Q19Explain the concept of database replication.
Technical
Q20How would you debug a memory leak in production?
Technical
Q21Tell me about a time you optimized application performance.
Experience
Q22Describe your experience with infrastructure monitoring tools.
Experience
Q23What would you do if you discovered your application has severe performance issues in production?
Situational
Q24How would you implement a retry mechanism with exponential backoff?
Technical
Q25Explain the concept of circuit breaker pattern.
Technical
Q26How would you implement a distributed lock?
Technical
Q27What is the difference between clustering and replication?
Technical
Q28How would you implement a caching strategy with cache invalidation?
Technical
Q29How would you implement a robust error handling strategy?
Technical
Q30Explain the concept of shadow deployment vs canary deployment.
Technical
Q31How does DNS caching work and what are TTL values?
Technical
Q32Explain the concept of read replicas and their use cases.
Technical
Q33How would you implement a distributed cache?
Technical
Q34Explain the concept of tail latency and how to reduce it.
Technical
Q35Describe a time when you had to debug a complex distributed systems issue.
Behavioral
Q36Tell me about your experience with Redis or other caching solutions.
Experience
Q37What would you do if you needed to scale a system to 10x current traffic?
Situational
Q38How would you approach investigating a memory leak in production?
Situational
Q39What would you do if API response times suddenly increased?
Situational
Q40How does the company handle production incidents and post-mortems?
Reverse
Q41How would you handle a situation where a critical service you manage is experiencing significant downtime?
Situational
Q42Can you explain how you would set up a CI/CD pipeline for a microservices architecture?
Technical
Q43Can you describe a challenging DevOps project you completed and the impact it had on the organization?
Experience
Q44Can you describe the process you followed to design and maintain the multi-stage CI/CD pipelines for microservices in Azure DevOps?
Technical
Q45Can you describe your experience in designing CI/CD pipelines specifically for microservices in Azure DevOps?
Experience
Q46How do you ensure the stability and reliability of container deployments in a Kubernetes environment?
Technical
Q47If a production deployment fails, what steps would you take to diagnose and resolve the issue?
Situational
Q48Can you describe your experience designing CI/CD pipelines in Azure DevOps using YAML?
Technical
Q49What specific tools or techniques did you use to monitor and validate the health of deployments in your previous projects?
Experience
Q50If a deployment fails during a critical release, what steps would you take to diagnose and resolve the issue?
Situational
Q51Describe your approach to handling Jenkins pipeline failures and the steps you take to prevent them from recurring.
Experience
Q52What was your role in supporting the production deployments across microservices at FedEx, and what challenges did you face?
Experience
Q53Describe a challenge you faced while integrating observability tools like Prometheus and Grafana, and how you resolved it.
Behavioral
Q54How do you approach monitoring and observability in your deployments, and what tools have you found most effective for validating post-deployment health?
Technical
Q55Can you explain how you designed a multi-stage CI/CD pipeline in Azure DevOps for the logistics platform at FedEx?
Technical
Q56Can you describe how you designed and operated cloud-native microservices on Amazon EKS and ECS Fargate?
Experience
Q57What specific SRE practices have you implemented to reduce Mean Time to Recovery (MTTR) in your previous roles?
Experience
Q58How do you ensure high availability and uptime in multi-AZ environments?
Technical
Q59What strategies have you used for blue/green and canary deployments?
Technical
Q60What steps do you follow for capacity planning and disaster recovery in AWS?
Experience
Q61Can you describe a challenging incident you managed and how you conducted the blameless post-mortem?
Behavioral
Q62What tools do you use for observability and monitoring in cloud environments?
Technical
Q63What is your experience with implementing IAM least-privilege policies?
Technical
Q64Describe a time when you had to diagnose and resolve a CI/CD pipeline failure. What was the outcome?
Behavioral
Q65If a service in production goes down, what immediate steps would you take to diagnose and resolve the issue?
Situational
Q66Can you explain how you implemented the AWS Well-Architected Framework in your projects?
Technical
Q67Describe a challenging situation you faced while managing on-call incidents and how you resolved it.
Behavioral
Q68If you were tasked with scaling a microservices architecture, what steps would you take to ensure high availability?
Situational
Q69What motivated you to specialize in AWS and DevOps engineering?
Motivational
Q70What tools do you prefer for monitoring cloud applications, and why?
Technical
Q71Can you discuss your experience with CI/CD pipelines and how you've improved deployment processes?
Experience
Q72How do you approach capacity planning in cloud environments?
Technical
Q73Can you explain the importance of SLOs and SLIs in your work as an SRE?
Technical
Q74What are your long-term career goals in cloud engineering?
Motivational
Q75Do you have any questions about our current cloud architecture or the technologies we use?
Reverse
Q76How do you ensure security and compliance in your AWS architecture, particularly regarding IAM policies and encryption?
Technical
Q77What would you do if an on-call incident escalates and you notice that the existing runbook does not cover the situation?
Situational
Q78What motivates you to work in cloud engineering and SRE, and how do you see your career developing in this field?
Motivational
Q79What challenges have you faced while managing AWS environments, and how did you overcome them?
Behavioral
Q80Can you describe a specific instance where you implemented SRE practices to improve system reliability?
Experience
Q81How do you prioritize tasks and manage time when dealing with multiple incidents during an on-call rotation?
Behavioral
Q82If you were tasked with redesigning a CI/CD pipeline for a new application, what key elements would you focus on to ensure efficiency and reliability?
Situational
Q83What strategies did you use to architect secure VPCs with multi-AZ subnets and NAT Gateways?
Technical
Q84If you were tasked with improving the CI/CD pipeline further, what approaches would you consider?
Situational
Q85Can you explain how you implemented the AWS Well-Architected Framework to achieve a 99.9% uptime SLA in your previous role?
Technical
Q86Describe a challenging incident you handled while on-call and how your actions contributed to reducing the Mean Time to Recovery (MTTR).
Behavioral
Q87Can you explain how you utilized AWS EKS and ECS Fargate to maintain a 99.9% uptime SLA in your previous role?
Technical
Q88Describe a challenging incident you faced while on-call and how you resolved it using your SRE practices.
Behavioral
Q89What specific improvements did you achieve in provisioning time through your use of Terraform and CloudFormation?
Experience
Q90If you were tasked with designing a CI/CD pipeline for a new microservices application, what key components would you prioritize?
Situational
Q91How did you achieve a 15% reduction in AWS costs in your previous position?
Experience
Q92How do you ensure your infrastructure as code (IaC) practices prevent configuration drift across environments?
Technical
Q93In a scenario where a service is experiencing downtime, how would you approach troubleshooting and resolution?
Situational
Q94What motivates you to pursue a career in cloud engineering and DevOps?
Motivational
Q95How do you approach debugging a critical issue in a production environment?
Technical
Q96How would you perform a graceful rolling deployment with zero downtime?
Technical