Technical Vision and Infrastructure Roadmap Questions

This topic assesses a candidate's ability to define a multi year technical vision for infrastructure, platform, and systems and to translate that vision into a practical execution roadmap. Core skills include evaluating technology choices and architecture evolution, planning migration and modernization paths, anticipating scalability and capacity needs, and balancing cost performance with resilience and operational reliability. Candidates should demonstrate approaches to managing technical debt, sequencing investments across quarters and releases, estimating resources and timelines, establishing measurable infrastructure goals and key performance indicators, and implementing governance and standards. Discussion may also cover reliability and observability, security and compliance considerations, trade offs between short term stability and long term rearchitecture, prioritization to enable business outcomes, and communicating technical trade offs to both technical and non technical stakeholders.

HardSystem Design

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Design a multi-region active-active API platform that must achieve 99.99% availability and respect GDPR residency for EU data. Discuss architecture choices for API routing, data replication and consistency, DNS/global load balancing strategy, health checks and failover, testing plans, and cost tradeoffs between consistency and latency.

MediumTechnical

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Forty percent of your cloud spend is traced to inefficient resource usage identified by rightsizing reports. Outline an initiative to reduce spend by 25% without impacting availability. Include measurement strategy, automation steps, pilot scope, timeline, stakeholder incentives, and risk mitigation.

MediumSystem Design

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Propose governance and standards for Infrastructure as Code across an organization: module repository structure, code review and approval workflows, linting and formatting rules, security scans, naming and tagging conventions, versioning and deprecation policy. Outline a quarter-by-quarter rollout plan that balances speed with compliance.

HardTechnical

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Write a Python script (pseudocode is acceptable) that implements an automated runbook to safely roll back a Kubernetes Deployment to the previous revision. The script should: verify the current deployment's replica status, perform the rollback, wait for pods to reach readiness, validate health endpoints across replicas, and include idempotence and basic error handling. Outline assumptions about kubeconfig and permissions.

HardTechnical

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You need to persuade executive leadership to fund a $10M, three-year infrastructure modernization program. Prepare the five most important points you would present to align the investment to revenue, churn reduction, time-to-market, and risk reduction. Which financial metrics and KPIs would you include to justify ROI?

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