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KJ Stillabower
Executive Technology Leader specializing in SaaS platforms, AWS microservices, and security
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Platform/infra engineer with deep Kubernetes (EKS) and VMware vSphere experience who has led a monolith-to-microservices transition for a credit lending decision platform. Built GitOps-driven Terraform delivery with strong governance, and used LaunchDarkly-based progressive rollouts plus Datadog observability to safely ship multiple times per day (reported ~6x throughput and 1/3 the bugfix tickets vs legacy). Also operates hybrid on-prem/AWS networking (firewall + Transit Gateway, BGP) and has handled high-stakes datacenter migrations (100TB Storage vMotion) under Sev1 conditions.
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Key Strengths
- Designed and built an EKS-based Kubernetes platform with segmented networking, controlled ingress, and namespace discipline
- Strong GitOps/IaC governance: Terraform with S3 remote state, PR-based plan/apply artifacts, and approval/segregation-of-duties guardrails to reduce drift
- Reliability validation via multi-stage CI/CD testing, ephemeral environment spin-ups from manifests, and policy checks (limits, pod config, namespace adherence)
- Production-safe rollout strategy using LaunchDarkly feature flags plus progressive traffic ramps (.1% → 1% → 10%) tied to observability signals
- Demonstrated delivery impact: microservices team shipped multiple times/day with ~6x throughput and ~1/3 remediation tickets vs monolith; estimated 5–8x velocity improvement
- High-pressure infrastructure troubleshooting: resolved ESXi host hard-locks during 100TB Storage vMotion migration by enabling persistent logs, running Sev1 escalation, and patching HBA firmware
- Prevented recurrence by implementing automated host validation (host profiles + scheduled scripts) and cordoning unvalidated ESXi hosts
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