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Senior Engineer, Internal Developer Platform
Posted Jul 15, 2026 · We last checked this listing on Oct 6, 2026
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Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Walk me through a time you built or improved an internal developer portal, maybe with Backstage. What problem were you solving and how did developers actually use it afterward?
What they are checking: whether they have hands-on Backstage experience tied to a real developer-experience outcome, not just familiarity with the tool
Tell me about a time a service you supported started missing its SLO. How did you find the cause and what did you change afterward?
What they are checking: practical SRE instincts and whether error budgets and SLOs are lived practice or just vocabulary
This role sits between infrastructure work and treating developers as your customers. Tell me about a time those two pulled in different directions and how you resolved it.
What they are checking: whether they can hold platform-as-a-product mentality when reliability and developer convenience conflict
What would you do
A developer says the platform's new deployment pipeline is too slow and is going around it with a manual workaround. What do you do?
What they are checking: how they balance guardrails and standardization against actual developer adoption and trust
Imagine you're rolling out a Kubernetes cluster version upgrade across dozens of teams' workloads. How do you plan it so nothing breaks in production?
What they are checking: operational rigor around cluster lifecycle management and change management at scale
You're paged at 2 a.m. because a shared platform service is down and it's affecting multiple teams' deployments. Walk me through what you do first.
What they are checking: incident response discipline and ability to triage a platform-wide outage calmly and methodically
About the work
Say you need to add a custom plugin to Backstage that pulls service ownership data from your software catalog and surfaces it on each service's page. How would you approach building that?
What they are checking: depth of TypeScript, Node.js, and React skill applied specifically to Backstage's plugin architecture
How would you design a Backstage software template that scaffolds a new service, wires it into CI/CD, and registers it in the catalog automatically?
What they are checking: ability to translate platform-as-a-product thinking into a concrete self-service workflow
You're running workloads across both EKS and GKE. What are the real differences you've hit in practice around IAM, networking, or cluster upgrades between the two?
What they are checking: genuine dual-cloud experience versus surface-level familiarity with one provider and buzzword knowledge of the other
Explain how you'd use Crossplane to let application teams provision a database or queue without giving them direct cloud console access.
What they are checking: understanding of Kubernetes-native infrastructure abstraction and composite resource design, not just that they've heard of Crossplane
Tell me about a Terraform module setup you built that other teams reused. How did you version it and manage promotion across environments?
What they are checking: whether they've actually operated shared IaC at scale versus writing one-off Terraform for their own project
Walk me through a GitLab CI/CD pipeline you built that integrated with JFrog Artifactory. What broke, and how did you fix it?
What they are checking: real pipeline-building and artifact-management experience, and comfort troubleshooting under pressure
Describe a Datadog dashboard or monitor setup you built that actually caught a problem before users noticed.
What they are checking: hands-on observability skill and a proactive mindset toward platform reliability
How do you think about secrets management and supply-chain security, like image signing or SBOMs, in a platform you're responsible for?
What they are checking: whether DevSecOps is built into their default workflow or something they'd bolt on only if asked
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As published by American Family Insurance.