KRSTACK
Résumé Work with me

Selected work

Systems thinking, documented.

Technical work is presented with context, architecture, decisions, and lessons—not unsupported outcome claims.

Editorial cover illustration showing a central Linux scheduling console securely deploying cron jobs to multiple remote servers

Sanitized engineering pattern

Centralized Cron Management and Remote Deployment

A centralized Linux cron deployment pattern using SSH key authentication to prepare, install, and verify scheduled jobs across multiple servers.

  • Linux
  • Bash
  • SSH
  • Cron
  • Crontab
  • Remote automation
  • Server operations
  • Access control
  • Troubleshooting
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Editorial cover illustration showing an incoming mail path through a Kubernetes workload and relay service to controlled SMTP delivery

Sanitized engineering pattern

Running a Postfix Mail Relay on Kubernetes

Moving a Postfix mail relay into Kubernetes while handling configuration, persistent logging, SMTP connectivity, workload placement, and troubleshooting.

  • Kubernetes/GKE
  • Linux
  • Postfix
  • SMTP
  • Containerization
  • Configuration management
  • Persistent logging
  • syslog-ng
  • LMDB
  • Workload scheduling
  • Networking
  • Troubleshooting
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Editorial cover illustration showing source promotion through deployment automation and synchronized transfer to container workloads behind a secure edge

Public implementation record

Production MCP Application Deployment

A documented Linux deployment workflow that separates Git-managed source, protected runtime files, production promotion, containers, and the HTTPS edge.

  • Linux
  • Git
  • SSH
  • Bash
  • Rsync
  • Python
  • Docker
  • Docker Compose
  • Nginx
  • HTTPS/TLS
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Related engineering labs

Controlled environments, examined.