Curriculum vitae

calendar 2025-10-09 · 3 min read  ·
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Overview

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Profile

Senior DevOps Engineer with 10+ years in cloud infrastructure and a software development background. Experienced in leading small DevOps teams, migrating infrastructure to IaC, and optimizing AWS costs. Strong focus on Terraform, Kubernetes, and CI/CD automation.

Location: Sapporo, Japan

Languages

  • Polish - Native
  • English - C1 (Professional working proficiency)
  • Japanese - A1 (Beginner)

Education

Technical University in Lodz 2001 – 2006 The Faculty of Technical Physics, Information Technology and Applied Mathematics.

Technical Skills

  • Cloud: AWS, GCP
  • IaC: Terraform, Terragrunt, Pulumi
  • Containers: Docker, Kubernetes, Helm
  • CI/CD: GitLab CI, CircleCI, ArgoCD
  • Monitoring: Datadog, Prometheus, Grafana, ELK Stack
  • Scripting: Python, Bash, TypeScript

Experience

2025, November - Present | Independent Developer / Open Source | Sapporo, Japan

  • Designed and developed Open Transit Stack, an open-source monorepo for processing, validating, and visualizing public transit data (GTFS) using TypeScript, React, and MapLibre GL.
  • Built AWS infrastructure (S3, CloudFront, ACM, DNS) using Pulumi as Infrastructure as Code.
  • Structured the project as an Nx monorepo with strict TypeScript, Vitest, Playwright E2E tests, and ESLint/Prettier.

2024, April – 2024, October | Senior DevOps Engineer at Foundever | Lodz, Poland (Remote)

  • Designed a self-service database provisioning process for microservices, enabling development teams to create PostgreSQL infrastructure without DevOps involvement.
  • Led the migration of GitLab projects to a new instance, enabling the shutdown of a legacy GitLab server and standardizing CI/CD pipelines across teams.
  • Managed AWS infrastructure using Terraform and improved delivery processes, including GitLab pipelines and ArgoCD/Helm configurations.

2021, June – 2024, March | Senior DevOps Engineer at Cobiro | Warsaw, Poland (Hybrid)

  • Led a small DevOps team, overseeing cloud infrastructure and deployments.
  • Achieved 50% reduction in infrastructure and operational costs through Kubernetes optimization, RDS right-sizing, and migration from Datadog to Elastic Cloud.
  • Migrated AWS infrastructure to Infrastructure as Code (IaC) using Terraform, Terragrunt, and Atlantis.
  • Administered Kubernetes clusters (EKS) with Helm, implementing cluster autoscaler and KEDA for event-driven scaling.
  • Built CI/CD pipelines (CircleCI) and Docker images for frontend and backend teams.

2019, January – 2021, June | Senior DevOps Engineer at SeaChange Poland | Warsaw, Poland (Hybrid)

  • Led a small DevOps team, overseeing infrastructure and automation processes.
  • Designed and implemented AWS-based infrastructure using Terraform for the company's products, including ECS, EKS, EC2, S3, CloudFront, KMS, IAM, ElastiCache (Redis), and Elasticsearch.
  • Developed and configured monitoring (Prometheus, Grafana) and logging (ELK, S3) stacks.
  • Created an on-demand environment provisioning system for the company's products using Terraform and Jenkins.
  • Managed AWS accounts and configured network infrastructure, including IAM and VPC, using Terraform.

2015, January – 2018, December | System Administrator at Xstream A/S | Warsaw, Poland (Hybrid)

  • Designed and maintained AWS infrastructure using an in-house system (Python with Boto and Fabric, Puppet, Packer) and later transitioned to CloudFormation.
  • Managed over 300 on-premise servers (both hardware and virtual machines) using Fabric and Puppet.
  • Managed and configured internal services, including monitoring (Nagios, Zabbix, Observium), code repositories (SVN, Git, Gerrit), logging stack (ELK), and CI/CD pipelines (Jenkins).

2012, January – 2014, December | Senior PHP Developer at Xstream A/S | Warsaw, Poland (Hybrid)

  • Developed and maintained video content management and processing systems using PHP 5 (Zend Framework, Symfony 2) and MySQL.

2005 – 2011 | Earlier Roles: PHP Developer, System Administrator | Lodz, Poland

  • Built multiple web applications and custom frameworks using PHP 5, MySQL, and various frameworks (Kohana, Yii, Zend).
  • Implemented data mining and search solutions using Lucene and Solr.
  • Provided IT support, including network management and Windows Server administration.

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