Bartek Zakrzewski

Pearson - DevOps Engineer (Sep 2023 - Present, Poznan, Poland)

Supporting and hardening production platforms; on-call rotation.

• Migrated CI/CD pipelines: GitLab to Jenkins, then Jenkins to GitHub Actions
• Managed several projects with Ansible and EC2 user-data
• Migrated 5 projects from PagerDuty to Jira Service Management and New Relic, including SNS and SES integration
• Hardened products with HSTS, CSP, and related security headers
• Overcame S3 & CloudFront limitations using Lambda@Edge
• Set up a VPC interface endpoint to route internal traffic to a project in a different region
• Provisioned Azure infrastructure with Azure OpenAI for an AI application
• Provided infrastructure for an AI application built on Step Functions, Bedrock, and AWS Transcribe
• Created a process for rebuilding production images every 30 days to stay on the latest company-approved tag
• Maintained a legacy business-critical application: debugged directly on the Linux server (hosted in a data centre) and troubleshot networking issues
• Reduced costs by upgrading an AWS RDS instance off extended-support billing
• On-call rotation via Jira Service Management
• Created bash scripts

AWS CloudFront WAF ECS (Fargate / EC2) Lambda Step Functions Route53 IAM VPC Endpoints MongoDB RDS Terraform Terragrunt Ansible Nexus New Relic Jira Service Management PagerDuty GitHub Actions GitLab CI Jenkins Azure OpenAI Bedrock AWS Transcribe bash

Valtech - Cloud Engineer (Jan 2023 - Sep 2024, Remote)

Cloud engineering for a large UK retail platform (under NDA).

• Migrated the Terraform workflow from Atlantis to GitLab CI
• Improved and upgraded internal Terraform modules
• Introduced a modular approach in Terraform, modifying tfstate in production
• Built Elasticsearch queries and thresholds to alert on production Lambda failures
• Introduced Slack alerting
• Mentored an IT Support colleague toward automation/DevOps

AWS API Gateway ECS (Fargate + EC2) Lambda Workspaces SQS Terraform Atlantis Elasticsearch Kibana Grafana Docker Jenkins GitLab CI

Merixstudio - DevOps Engineer (Nov 2021 - Dec 2022, Poznan, Poland)

Supported live projects, added new functionality, and built internal infrastructure.

• General infrastructure-related tickets
• Supported developers
• Created a pipeline for automated E2E Cypress testing
• Operated an internal Kubernetes cluster on GCP for the development team, using Helm charts
• Built a monitoring stack for internal services using Loki, Prometheus, and Grafana on Hetzner
• Prepared AWS cost quotations for prospective projects and took part in client kickoffs

AWS ECS RDS Lambda SQS SNS EventBridge Route53 WAF IAM Terraform Kubernetes Helm GCP Hetzner Cloud Grafana Prometheus Loki GitLab CI Ansible Docker Compose Cypress

GFT - DevOps Engineer (Apr 2021 - Nov 2021, Poznan, PL)

On-premises to cloud migration for London Stock Exchange Group.

Docker Kubernetes Terraform Jenkins AWS Ansible Artifactory

M-sense by Newsenselab - Software Developer Intern (Jun 2019 - Jun 2020, Berlin, DE)

Medical app (M-sense) for headache management. Adding features to existing JS functions. Creating multi-environment infrastructure for product’s CMS website using docker-compose.

Node.js GitLab CI Mocha Docker Shell AWS Terraform TDD Agile

Better-IT Limited - Web Developer (Feb 2018 - May 2021, Leicester, UK, part-time)

Website and WordPress template development and maintenance.

PHP HTML CSS JavaScript WordPress

BSc (Hons) Software Engineering

De Montfort University, Leicester, United Kingdom - 09-2017 - 07-2021

Thesis: dating portal with a matching algorithm (Node/Nest, MongoDB, React, AWS).

Secondary Technical School (IT specialisation)

Szczecin, Poland - 09-2013 - 05-2017 — IT Technician certificate