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Hi, I'm

Alex Senger

DevOps Engineer▌

I help teams run Kubernetes and PostgreSQL reliably, with everything automated and versioned in Git. Freelance DevOps and platform engineer, based in Seoul and studying for an MSc in AI alongside.

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01.What I do

Kubernetes & GitOps

Clusters managed entirely from Git with Argo CD, Helm and Kustomize. Every change reviewed in a pull request, validated in CI and reversible with a git revert.

PostgreSQL on Kubernetes

Highly available PostgreSQL with CloudNativePG: automated failover, backups and point-in-time recovery, deployed and upgraded through GitOps.

Automation & Observability

Terraform, Ansible and CI/CD pipelines that replace manual setup, plus logging and alerting your team can rely on and maintain itself.

02.Featured projects

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Monitoring Platform Operations

~20M logs per day

Took over a poorly documented production platform on Elastic Stack and Icinga 2 for a nationwide toll operator, then automated it with Ansible and GitLab CI/CD.

Elastic StackIcinga 2AnsibleGitLab CI/CDPythonLinux

Toll operator · via ORDIX

PostgreSQL Operator Benchmark

Failover: 5 s to 68 s

Compared five PostgreSQL operators for Kubernetes and measured failover under write load. Published as an article (in German) and presented at CloudNativeNight Mainz.

KubernetesPostgreSQLCloudNativePGPatroniBenchmarking

Kubernetes Homelab

Merge to live in ~3 min

Single-node Talos Linux cluster run entirely from a public Git repository: Argo CD, Cilium, OpenBao, Kyverno and CloudNativePG with point-in-time recovery. This site runs on it.

KubernetesTalos LinuxArgo CDCiliumOpenBaoKyvernoCloudNativePG

Let's talk

I work independently, document everything I build and explain technical decisions clearly, so your team can maintain the setup long after the project ends.

Available for freelance projects

Full-time, remote from Seoul (UTC+9) · Asia Pacific hours, overlap with Europe

Get in touch