George Hatzikotelis

Test Automation Lead
George Hatzikotelis is SingleStone's QA genius, with 18+ years of experience in quickly learning new technologies, communicating effectively, and meshing with team members to deliver robust, high-quality solutions.

Areas of Expertise


  • Ruby​
  • Cucumber​
  • Gherkin​
  • Fitnesse​
  • Selenium​
  • Watir​
  • REST Web Services​
  • GraphQL​
  • UI/AP/Cloud Automated Testing
  • JavaScript​
  • Cypress​
  • Git​
  • GitHub/GitLab​
  • CI/CD
  • Amazon Web Services​
  • Docker​
  • Jenkins​


  • Agile Testing ​
  • Acceptance Test Driven Development​
  • Behavior Driven Development (BDD) Testing​
  • Automated Testing​
  • Integrating tests with CI/CD pipelines​
  • PageObject patterns​
  • Test plan development​
  • Functional testing​
  • Nonfunctional testing​
  • Lean Six Sigma​
  • Scrum​
  • SAFe​
  • Certified Scrum Master​
  • Jira​
  • Version One​
  • Agile Methodologies
  • Persona Development

Thought Leadership

GraphQL How-to Guide: Create Query Models for Functional Test Automation

A little over a year ago, I found myself developing automated tests for a back-end application that was using GraphQL. At the time, GraphQL was new to me—and…

Getting Started with Automated Testing

Automated testing elevates quality, helps teams deliver software faster, and reduces risk. In this post, I’ll share my thoughts on test automation and how best to proceed if…

7 Quality Assurance Principles: Build Agile, High-Performing Products

Through 18 years of working in the tech industry, I’ve spent a lot of time working with and training teams on quality assurance principles. These are not just…