portfolio@devops ~ %

# Welcome!

$ whoami

Łukasz Żułnowski

$ cat role.txt

CloudOps / DevOps / Site Reliability Engineer (SRE)

$ echo $MISSION

Building reliable multi-cloud infrastructure as code using AWS, GCP, Kubernetes, and Terraform. Scaling systems for millions of users worldwide.

$ uptime

up 12+ years in IT, load average: cloud_architecting, kubernetes_wrangling, zero_downtime

Ctrl + K to quick navigate

# Technical Skills

Technologies and tools I work with to build reliable infrastructure. See how I've applied these in my projects and work experience.

Loading skills...

Kubernetes

GKE

EKS

Rancher

Docker

Helm

Kustomize

Istio

HaProxy

ArgoCD

Argo Workflows

Prometheus

AWS

GCP

Terraform

Atlantis

Terragrunt

Kubernetes

GKE

EKS

Istio

Datadog

Terraform

Atlantis

Terragrunt

Helm

Kustomize

Ansible

Puppet

Atlantis

ArgoCD

Argo Workflows

GitHub Actions

Jenkins

Bitbucket

Prometheus

Grafana

Datadog

ELK Stack

Zabbix

Newrelic

$ Certifications

AWS Solutions Architect

Kubernetes CKA

Terraform Associate

GCP Cloud Engineer

# Work Experience

My professional journey building scalable infrastructure. Check out the technologies I use and projects I've built.

Feb 2021 - Present

CloudOps Engineer

Chess.com | Remote

CloudOps Engineer managing multi-cloud infrastructure.

Implementing CI/CD in Github Actions, ArgoCD, Argo Workflows
Management of Cloud: GCP, AWS, Mongodb Cloud, Terraform, Terragrunt, Atlantis, ScylaCloud, Confluent Cloud, HPC Cloud
Management of Kubernetes: GKE, Rancher (on-prem), Helm, ArgoCD
Implementing and designing monitoring solution based on Prometheus/Grafana/Alertmanager/EFK, Datadog
Creation of scripts in Python, Bash and Go
Maintenance Services: Redis, PSQL, Mongodb, nginx, haproxy, emissary, Istio

GCP AWS Kubernetes GKE ArgoCD Argo Workflows Terraform Terragrunt Atlantis Helm Datadog Prometheus Grafana Go Python Bash Istio Redis PostgreSQL MongoDB

Jul 2021 - Aug 2021

DevOps/Cloud Architect

GreenSteam | Remote

Cloud Architecture and infrastructure design.

Preparing Architecture of infrastructure, application, tech-stack
AWS infrastructure cost optimisation
Product Owner of Infrastructure/CI/CD
Management of Cloud: AWS, Terraform, Atlantis
Management of Kubernetes: EKS, Helm, Helmfile, Argo
Implementing and designing monitoring solution based on Prometheus/Grafana/Alertmanager/EFK
CI/CD based on Jenkins, AWS Code
Creation of scripts in Python and Bash

AWS Terraform Atlantis EKS Kubernetes Helm Helmfile Argo Prometheus Grafana Jenkins Python Bash

Sep 2018 - Jun 2021

Team Leader, DevOps

GreenSteam | Remote

Team Leader managing Support and DevOps Team.

Team management of Support and DevOps Team
Scrum Mastering, Kanban board management
Product Owner of Infrastructure/CI/CD
DevOps Engineer for Cloud infrastructure
Management of Cloud: AWS, Terraform, Atlantis
Management of Kubernetes: EKS, Helm, Helmfile, Argo
Implementing and designing monitoring solution based on Prometheus/Grafana/Alertmanager/EFK
CI/CD based on Jenkins, AWS Code
Management of software tools: Bitbucket, Jira, Confluence

AWS Terraform Atlantis EKS Kubernetes Helm Helmfile Argo Prometheus Grafana Jenkins Python Bash Bitbucket Jira Confluence

Aug 2016 - Aug 2018

DevOps Engineer

GreenSteam | Remote

DevOps Engineer for Cloud infrastructure and embedded platform.

DevOps Engineer for Cloud infrastructure and embedded platform
Management of Cloud: AWS, Terraform, Puppet
Management of Kubernetes: EKS, Helm, HelmFile, Argo
Implementing and designing monitoring solution based on Prometheus/Grafana/Alertmanager/EFK
Creation and administration of CI/CD environment on Jenkins
Creation of scripts in Python and Bash

AWS Terraform Puppet EKS Kubernetes Helm Argo Prometheus Grafana Jenkins Python Bash

Jan 2014 - Jul 2016

Systems Administrator

Polkomtel | Remote

Application administrator for J2EE applications.

Application administrator for J2EE applications
Management of Web services: Apache2, MS SQL, MySQL, Jboss, Wildfly, Tomcat, ELK stack
Management of software tools: Bitbucket, Jenkins, Nexus, Zabbix, Artifactory, SVN
Management of Citrix XenServer virtualization platform
Creation and administration of CI/CD environment
Monitoring of high availability systems 24h/7

Linux Apache2 MySQL MS SQL JBoss Wildfly Tomcat ELK Jenkins Zabbix Citrix XenServer Bash

Jun 2013 - Dec 2013

Junior Network & ICT Specialist

Eniro Polska | Remote

Network and ICT Specialist managing Open Source systems.

Management of Open Source systems: Debian, RH
Management of Web services: Apache2, nginx, Bind9, Zabbix, MySQL, SVN, Asterisk
Management of VMware virtualization platform
Management of backups solutions: Bacula
Operation and configuration of network solutions: Cisco, FortiNet
Creation and implementation of work automation solutions: Puppet, Jenkins, Bash scripts

Debian RHEL Apache2 nginx MySQL VMware Bacula Cisco FortiNet Puppet Jenkins Bash

Aug 2012 - Jun 2013

Users Support Assistant

Eniro Polska | Remote

End users support and IT infrastructure maintenance.

End users support
Maintenance and service for PCs, laptops, mobile and servers equipment
Systems management: Windows XP/7, Windows Server 2003/2008, Debian, MacOS, Android, iOS
Management of Active Directory environment
Management of ICT infrastructure: Alcatel, Cisco
Installation of network infrastructure

Windows Server Debian MacOS Active Directory Cisco Alcatel

Download Full Resume

# Open Source Contributions

Contributing back to the community through merged pull requests. Built with skills gained from professional experience.

feature

#2290

terraform-google-modules/terraform-google-kubernetes-engine

feat: Add possibility to setup private nodes pool if global configuration is different

Added support for configuring private node pools with different settings than global cluster configuration, enabling more flexible GKE deployments.

Terraform GCP Kubernetes GKE

Merged Mar 2025 View PR

feature

#22

reviewdog/action-terraform-validate

Add support for passing terraform version to docker build

Enhanced GitHub Action to allow users to specify custom Terraform versions for validation, improving flexibility in CI/CD pipelines.

GitHub Actions Docker Terraform

Merged Jun 2024 View PR

fix

#1688

metallb/metallb

Helm: handle the addressPoolUsage.enabled flag

Fixed Helm chart to properly handle the addressPoolUsage.enabled flag, ensuring correct metrics configuration for MetalLB deployments.

Helm Kubernetes Go MetalLB

Merged Nov 2022 View PR

fix

#8208

kubernetes-sigs/kubespray

Fix wrong baseurl for centos extra repo for Oracle Linux

Corrected CentOS extra repository URL configuration for Oracle Linux deployments, fixing missing /os/ path segment.

Ansible Kubernetes Linux Oracle Linux

Merged Nov 2021 View PR

feature

#515

argoproj/argo-helm

feat(argo-cd): add possibility for change NodePort if this is type of Service

Added NodePort customization support to ArgoCD Helm chart, allowing users to specify custom NodePort values when using NodePort service type.

Helm Kubernetes ArgoCD

Merged Feb 2021 View PR

fix

#1180

banzaicloud/banzai-charts

Fix query ingress template formatting

Fixed Thanos query ingress template YAML formatting issues that caused incorrect label indentation and path configuration.

Helm Thanos Kubernetes Monitoring

Merged Dec 2020 View PR

enhancement

#22019

helm/charts

[stable/sentry] Sentry ingress labels

Added support for custom ingress labels in Sentry Helm chart, enabling better integration with ingress controllers and service meshes.

Helm Kubernetes Sentry

Merged Apr 2020 View PR

View All Contributions

# Education

Academic foundation in computer science and networks. See how this knowledge translates into technical skills and real projects.

Oct 2012 - Nov 2016

Master of Science

Networks and Information Systems

Warsaw School of Computer Science

Thesis: "Analysis of open source operating systems in terms of theirs configuration correctness and security level"

Oct 2008 - Feb 2012

Bachelor of Science

Internet Engineering

Warsaw School of Computer Science

Thesis: "Supporting the server platforms management using Web technology applications"

Sep 2005 - Jun 2008

High School Diploma

Physics, Maths, Computer Science profile

LXXXIII Emilian Kopczyński High School in Warsaw

# Get In Touch

Have a project in mind? Let's build something great together. Check out my projects and experience to see what I can do. No spam, I promise. I hate it as much as you do.

contact@terminal ~ %

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Pro tip: Being specific helps me help you better!

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Contact Information

[email protected]

Location

Remote / Worldwide Timezone flexible!

Response Time

Within 24 hours Usually faster!

Connect With Me

GitHub LinkedIn Twitter Email

Available for new projects

Currently accepting freelance and contract work

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