**Senior / Lead DevOps · Platform Engineer** **FinTech · Banking · Regulated Systems · AI Infrastructure** ### Welcome. This site contains my professional profile, CV, selected projects, certifications, and contact information. ## About Lead DevOps / Platform Engineer with 15+ years of hands-on experience designing, building, and operating highly available, secure, and scalable production platforms in regulated enterprise, fintech, banking, and government environments. Strong expertise in Linux systems, Kubernetes, containerization, GitOps, CI/CD automation, Infrastructure as Code, observability, and SRE practices. # Contact 📍 Vilnius, Lithuania 📞 +370 614 28752 📧 [email protected] - GitHub: [vladlevinas (Vlad Levinas)](https://github.com/vladlevinas) - LinkedIn: [Vlad Levinas | LinkedIn](https://www.linkedin.com/in/levinvladimir/) ### Linux | | | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --- | | [[A container networking overview]]<br>[[linux capabilities]]<br>[[Linux_Process_Analysis]]<br>[[Resource management in Docker]]<br>[[systemd-cgtop]]<br>[[Template TechArticle]]<br>[[Два таких разных файла]]<br>[[Управление ресурсами с помощью cgroups в Linux и Docker]] | | | [[Systemd Timers- A Comprehensive Guide For Beginners]] | | | [[systemd-analyze security- как читать вывод и зачем он нужен в production]] | | | [[Understanding systemd-analyze security- What “UNSAFE” Really Means]] | | | [[Mastering Linux Network Diagnostics A Deep Dive into ss, lsof, netstat, and ip Commands]] | | | | | | | | ### Docker | | | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --- | | [[A container networking overview]]<br>[[Docker & Swarm]]<br>[[linux capabilities]]<br>[[Original article Resource management in Docker]]<br>[[Resource management in Docker]]<br>[[Secure Kubernetes Pods]]<br>[[Stress test of docker]]<br>[[Template TechArticle]]<br>[[Два таких разных файла]]<br>[[Полное руководство по `docker-entrypoint.sh`]]<br>[[Управление ресурсами с помощью cgroups в Linux и Docker]] | | | [[Distroless Containers]] | | | [[Docker daemon.json]] | | | [[Docker cheatsheet]] | | | [[Docker Swarm- 100+ Practical Command Examples]] | | | [[Complete Docker Swarm Guide]] | | | | | ### Kubernetes | | | | ------------------------------------------------------------------------------------- | --- | | [[Understanding the Kubernetes Control Plane]] | | | [[Kubernetes The Hard Way]] | | | [[Kubernetes RBAC A Complete Practical Guide]] | | | [[How the Kubernetes Scheduler Chooses a Node]] | | | [[How to Configure HTTPS Subdomains for Multiple Services Using Caddy Reverse Proxy]] | | | [[Kubernetes Architecture]] | | | [[kubectl debug]] | | | [[Kubernetes Autoscaler- how automatic scaling really works]] | | | [[Kubernetes Debug Services]] | | | [[Kubernetes RBAC полное руководство]] | | | [[Kubernetes Scheduling- Affinity и Taints-Tolerations на практике]] | | | [[Setting Up Kind Kubernetes Cluster]] | | | [[Guide to Kubernetes Configuration- Key Cluster Settings]] | | | [[kubectl set context & use context]] | | | [[What is Kubernetes Object]] | | | [[How to Troubleshoot Pod Errors]] | | | [[Kubernetes Deployment]] | | | [[What is Kubernetes Ingress]] | | | [[Deploy WordPress on Kubernetes with Nginx and MySQL]] | | | | | | | | | | | ### CI/CD | | | | ------------------------------------------------------------------------ | --- | | [[argo CD]]<br>[[Jenkins Architecture]]<br>[[List of Jenkins Practices]] | | | [[Loki + Promtail Setup Guide for K3s with ArgoCD GitOps]] | | | [[Building an MCP Server - Integrating Gitea -GitHub with Claude]] | | | [[Terraform Ansible COMPLETE AUTOMATED GUIDE Hetzner K3s Lab]] | | | | | | | | ### Fintech | | | | ------------------------------------------------------------------------------------------------------------------- | --- | | [[COMPLETE LIST OF CESOP ERROR CODES]] | | | [[How to Build a Private AI Knowledge Base with Local LLMs and MCP Integration A Complete Guide for Professionals]] | | | | | | | | | | |