Open to opportunities

Geonhyuk Im

@geonhyukim

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Site reliability and DevOps engineer focused on scalable, cost-efficient cloud infrastructure.

South Korea

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What I'm looking for

I seek a hands-on SRE/DevOps role at an engineering-driven company where I can improve reliability, automate infrastructure, and optimize costs while operating large-scale systems.

I am a site reliability and DevOps engineer with hands-on experience operating large-scale production systems for high-traffic platforms. I built zero-downtime EKS upgrade workflows, provisioned Istio Ambient Mesh, and managed monitoring and incident response for services with millions of users.

I led infrastructure-as-code adoption across teams, authored and refactored large Terraform codebases, and created CI/CD platforms with GitHub Actions to improve deployment speed and reliability. I have reduced cloud costs, optimized observability stacks, and implemented resilient networking and security practices.

I hold a B.S. in Computer Science and certifications including CKA and AWS Solutions Architect Associate. I enjoy building production-grade Kubernetes clusters and GitOps pipelines that make frequent, safe delivery and robust operations possible.

Experience

Work history, roles, and key accomplishments

Site Reliability Engineer

Joonggonara

Nov 2025 - Dec 2025 (1 month)

Built a zero-downtime EKS upgrade environment supporting 4.5M MAU by refactoring Terraform modules and upgrading 15+ Helm charts; provisioned Istio Ambient Mesh and decoupled AWS Load Balancer lifecycles to improve resilience during DDoS events and strengthen VPC security.

Terraform Helm Istio AWS Datadog Grafana Loki Sentry

Server Engineer

FACTBLOCK

Jun 2024 - Aug 2025 (1 year 2 months)

Led IaC adoption across a 50,000+ line Terraform codebase and built 24/7 monitoring for ECS Fargate and blockchain validator nodes; reduced AWS DB costs 40% and implemented CI/CD with GitHub Actions to cut frontend deployment time by 40%.