Tommy Kozlowski

Enterprise Solutions Architect / Lead DevOps Engineer  ·  Oudsbergen, Belgium

The architect who also holds the keyboard.

I started with bare metal servers and a passion for automation. Today I run Kubernetes clusters, design cloud architectures and lead a DevOps team. The stack changed. The mindset didn't.

Get in touch View experience
20+
Years in enterprise IT
5k+
Containers in prod
10k+
End users served
Hybrid
Infrastructure
What I specialise in

Core Expertise

Container & Orchestration
★ Expert · Daily hands-on
Kubernetes
★★★★★
8y
RKE2 / Rancher
★★★★★
6y
Helm / FluxCD / GitOps
★★★★★
6y
Kustomize
★★★★★
6y
On-Premises & Virtualisation
★ Expert · Full stack on-prem via IaC
VMware vSphere / vCenter
★★★★★
15y
Linux / Windows Server
★★★★★
20y
Nutanix HCI
★★★★★
5y
Cloud
★ Expert · Azure · Certified AWS & Azure
Microsoft Azure
★★★★★
10y
Microsoft 365
★★★★★
8y
Amazon AWS
★★★★★
4y
Identity & Security
★ Expert · AD, Domain Controllers, Keycloak
Active Directory / Entra ID
★★★★★
20y
Keycloak / Kerberos / SAML / OIDC
★★★★★
8y
Netwrix Privilege Secure
★★★★★
5y
Platform & Middleware
Deploy · Configure · Monitor · IaC rollout
Apache Kafka
★★★★★
6y
Apache NiFi
★★★★★
1y
Elasticsearch
★★★★★
5y
Redis / PostgreSQL
★★★★★
5y
SonarQube
★★★★★
6y
Nexus
★★★★★
6y
CI/CD & Observability
★ Expert · Jenkins, GitHub Actions, Terraform, Prometheus
Jenkins / GitHub Actions
★★★★★
10y
Terraform / Ansible
★★★★★
7y
FluxCD / GitOps
★★★★★
5y
Prometheus / Grafana / Kibana
★★★★★
7y
Datadog
★★★★★
5y
ELK Stack / OpenTelemetry
★★★★★
5y
Scripting & Automation
★ Expert · Automate everything
PowerShell
★★★★★
20y
Bash
★★★★★
15y
Python
★★★★★
8y
Power Automate
★★★★★
5y
Enterprise IT Management
★ Expert · Full lifecycle · 500+ servers · 200+ apps
Citrix Virtual Apps & Desktops
★★★★★
17y
SCCM / Intune / App-V
★★★★★
15y
Application Lifecycle Mgmt
★★★★★
20y
Patch & Change Management
★★★★★
20y
Networking & Load Balancing
Application delivery · Ingress management
Ingress NGINX / Traefik
★★★★★
6y
F5 BIG-IP
★★★★★
5y
Citrix Netscaler / ADC
★★★★★
10y
MetalLB
★★★★★
1y
Gravitee API Gateway
★★★★★
3y
How I work

Professional Skills

Leadership & Coaching
Team Leadership
★★★★★
10y
Mentoring / Coaching
★★★★★
10y
Hiring & Interviewing
★★★★★
8y
Architecture & Strategy
Architecture Design
★★★★★
10y
Technical Decision Making
★★★★★
10y
Cost & Risk Analysis
★★★★★
8y
Communication & Process
Stakeholder Communication
★★★★★
15y
Agile / Kanban / Scrum
★★★★★
8y
Technical Documentation
★★★★★
20y
Where I've been

Work Experience

Enterprise Solutions Architect
2016 — present
H.Essers · Genk, Belgium
  • Design and implement high-available, secure, scalable infrastructures (Kubernetes, M365, Intune)
  • Coach, mentor and lead a team of 10+ medium/senior system engineers
  • Maintain hybrid infrastructure hosting 500+ servers and 200+ applications across VMware, Nutanix and Azure
  • Design migration plans: Legacy → Containers, AD → Entra, on-premises → Cloud
  • Automate tasks with PowerShell, Python, Power Automate and 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 Azure/AWS using IaC and Rancher
  • Manage 5000+ containers across multiple Kubernetes clusters, on-premises and cloud
  • Drive GitOps workflows with Helm, Flux and Kustomize
  • Monitor with Datadog, Prometheus, Grafana and Kibana — setup dashboards and alerts
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 (AD, Entra ID, B2B/B2C) on-premises and Azure
  • Increased security with Privileged Access Management (Netwrix / Azure PIM)
Official credentials

Certifications

Certified Kubernetes Administrator
The Linux Foundation / CNCF
CKA · February 2024
Azure Administrator Associate
Microsoft
AZ-104 · June 2024
AWS Solutions Architect Associate
Amazon Web Services
SAA-C02 · June 2020
MCSA: Windows Server 2016 / 2019
Microsoft
June 2019
Citrix Certified Professional
Citrix
CCP-V Virtualization · 2017
Bachelor Applied Informatics
XIOS Hogeschool Limburg, Diepenbeek
2002 — 2005
Let's talk

Get in Touch

Email
[email protected] ✓ Copied!
Replies within 24 hours
LinkedIn
linkedin.com/in/tommy-kozlowski
Chess.com
chess.com/member/locotoko
Location
Oudsbergen, Belgium
Languages
Dutch English
Education
Bachelor Applied Informatics
Current employer
H.Essers, Genk