Curriculum vitae
Dominik Siejak
DevOps Engineer · InPost
office@dominiksiejak.pl @s3lcsum Poland
Experience
DevOps Engineer
InPost
Nov 2025 — Present
Full-time, remote. DevOps engineering for one of Poland's largest logistics and e-commerce platforms.
Senior SysDevOps Engineer
UserTesting
Mar 2022 — Nov 2025
Barcelona, Spain. Senior role combining systems administration and DevOps for a user research platform. AWS, ArgoCD, Kubernetes, and infrastructure automation.
DevOps Engineer
Blockchain House
Jul 2017 — Dec 2023
Contract role. AWS, MySQL, and blockchain infrastructure. Smart contract deployment and dApp infrastructure.
Freelance Web Developer
Self-employed
2015 — 2018
Created custom plugins for games, developed backends for online applications, built smart home infrastructure (Zigbee, Proxmox, Portainer, Authentik, Home Assistant, Grafana Alloy). Designed multiple home data centers connected via VPN (Cloudflare WARP, WireGuard) and MikroTik RouterOS.
Skills
Cloud & network
AWS · GCP · Cloudflare · VPC · IAM · EKS · S3 · RDS
Infrastructure as code
Terraform · OpenTofu · HCL · Ansible
CI/CD & GitOps
GitLab CI/CD · Jenkins · ArgoCD · Helm · Kyverno
Containers & orchestration
Kubernetes · Docker · Podman · Kind · Traefik · Envoy
Homelab networking
MikroTik · RouterOS · Tailscale · WireGuard · AdGuard · Pi-hole
Virtualization
Proxmox · LXC · KVM
Certifications
Cisco Networking Essentials
Cisco
Europejski Certyfikat Umiejętności Komputerowych (ECDL)
PTI · 2016
Languages
- Polish — native
- English — professional
- Spanish — working