Tommy
Kozlowski

Enterprise Solutions Architect  ·  Lead DevOps Engineer

20 years building infrastructure that doesn't fail.

Multi-cloud architect who has grown from bare metal to Kubernetes — designing, building and operating enterprise infrastructure while leading and mentoring the teams behind it.

Get in touch View experience
20+
Years enterprise
5k+
Containers in production
10k+
End users served
Hybrid
Cloud & on-prem
Power
Bright
Contrast
Colour
H.Hold
V.Hold
About me

From whiteboard to production —
I own the full journey.

Dutch and English speaking certified multi-cloud architect with two decades of hands-on experience across enterprise infrastructure, DevOps, and platform engineering.

At H.Essers, I hold dual roles as Enterprise Solutions Architect and Lead DevOps Engineer — designing high-available, secure, and scalable infrastructures while coaching and mentoring a team of 10+ engineers.

I believe great infrastructure is invisible: it just works. Sharing knowledge and seeing people have that "aha"-moment is what drives me.

Professional
DevOpsTeam LeadershipMentor / CoachAgileArchitectureDocumentation
Technical
KubernetesDockerAzureAWSTerraformAnsiblePythonPowerShellCI/CDGitHub ActionsHelmFluxCDKafkaPrometheusGrafanaLinux

20 years building infrastructure that doesn't fail.

From bare metal in 2005 to 1000+ containers in production today

Career

Work experience

Enterprise Solutions Architect
2016 — present
H.Essers · Genk, Belgium
  • Design and implement high available, secure, scalable infrastructures (Kubernetes, Microsoft 365, Intune)
  • Coach, mentor, lead and act as advisor for a team of 10 medium/senior system engineers
  • Maintain hybrid infrastructure hosting 500+ servers and 200+ applications (VMware / Nutanix / Azure)
  • Design migration plans: Legacy apps → Containers, AD → Entra, on-premises → Cloud
  • Deploy and maintain application delivery solutions for thousands of employees (Intune, Citrix, SCCM)
  • Automate tasks with scripting (PowerShell, Python, Power Automate, Bash)
Lead DevOps / Platform Engineer
2018 — present
H.Essers · Genk, Belgium
  • Lead and coach DevOps and system engineer teams (10+)
  • Deploy and maintain Kubernetes clusters on-premises and on Azure/AWS using IaC and Rancher
  • Manage 1000+ containers running in multiple Kubernetes clusters, on-premises and cloud
  • Use Kustomize, Helm, Flux and Git to create automated GitOps workflows
  • Monitor with Datadog, Prometheus, Grafana, Kibana — setup dashboards and alerts
  • Deploy and configure Kafka, Jenkins, Nexus, SonarQube, PostgreSQL, Redis and more
Senior System / Platform Engineer
2005 — 2016
H.Essers · Genk, Belgium
  • Maintained Windows domain (Active Directory, DHCP, DNS) for 10,000+ clients
  • Responsible for the entire Citrix farm serving 3000 clients
  • Implemented hyper-converged infrastructure on-premises (Nutanix)
  • Created hybrid identity management infrastructures (AD, Entra ID, B2B/B2C)
  • Increased security with Privileged Access Management on-premises and Azure (Netwrix / Azure PIM)
  • Maintained 300+ applications and 500+ servers; automated with PowerShell, Python, Bash
Credentials

Certifications

⎈
Certified Kubernetes Administrator
The Linux Foundation / CNCF
CKA · February 2024
☁
Azure Administrator Associate
Microsoft
AZ-104 · June 2024
⚡
Solutions Architect Associate
Amazon Web Services
SAA-C02 · June 2020
🪟
MCSA: Windows Server
Microsoft
2016 / 2019 · June 2019
◈
Citrix Certified Professional
Citrix
CCP-V Virtualization · September 2017
Get in touch

Let's connect

Interested in working together, need architecture advice, or want to talk infrastructure? Feel free to reach out.

✉info@tommykozlowski.com inlinkedin.com/in/tommy-kozlowski ⌥github.com/ObiWanKeTommy

Quick info

LocationOudsbergen, Belgium
LanguagesDutch · English · French
EducationBachelor Applied Informatics
Current roleSolutions Architect @ H.Essers