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Hi, I'm Constantinos ๐Ÿ‘‹

ISTQBยฎ CTFL Certified QA Engineer with 2 years of professional experience in manual software testing, including functional, regression, and end-to-end testing, test execution, defect management, and user acceptance testing (UAT).

Alongside my professional experience, I build hands-on portfolio projects covering UI automation, API testing, database validation, and continuous integration.

๐ŸŽ“ Certification

  • ISTQBยฎ Certified Tester Foundation Level (CTFL) โ€” September 2026

๐Ÿ› ๏ธ Skills

Testing

  • Manual, Functional, Regression, and End-to-End Testing
  • User Acceptance Testing (UAT)
  • API Testing
  • Database Testing
  • Test Case Design and Defect Management

Automation and Technical Skills

  • Playwright with TypeScript
  • Katalon Studio with Groovy
  • Postman with JavaScript
  • Newman
  • SQL and SQLite
  • Page Object Model (POM)
  • Request Chaining and Data-Driven Testing
  • GitHub Actions CI

Tools

  • Jira
  • Azure DevOps
  • Qase
  • BrowserStack
  • Git and GitHub

๐Ÿš€ Portfolio Projects

Playwright and TypeScript testing framework featuring:

  • End-to-end digital banking workflows
  • Page Object Model
  • API response validation
  • SQL and SQLite database checks
  • Tagged test execution
  • Playwright HTML reports
  • GitHub Actions CI

Playwright and TypeScript automation framework featuring:

  • Positive and negative UI scenarios
  • Login, inventory, cart, and checkout workflows
  • Page Object Model
  • API response validation
  • Cross-browser execution
  • Reusable test utilities and HTML reporting

Complete API testing workflow featuring:

  • Authentication and CRUD operations
  • Positive and negative testing
  • Request chaining and environment variables
  • Query parameter testing
  • JSON Schema validation
  • Dynamic and CSV data-driven testing
  • Newman command-line execution
  • HTML reporting
  • GitHub Actions CI

Katalon Studio and Groovy automation framework featuring:

  • Customer and bank manager workflows
  • Login, deposits, withdrawals, and transaction validation
  • Customer and account creation
  • Reusable Custom Keywords
  • Dynamic validations and alert handling
  • Organized regression test suites

๐Ÿ“š Currently Developing

  • Expanding my database testing knowledge with PostgreSQL
  • Continuing to develop practical QA automation and API testing skills

๐Ÿ”— Connect With Me

LinkedIn

Pinned Loading

  1. xyz-bank-katalon-automation xyz-bank-katalon-automation Public

    UI Automation Framework built with Katalon Studio using reusable Custom Keywords, Groovy and Selenium WebDriver.

    Groovy

  2. parabank-digital-banking-qa-suite parabank-digital-banking-qa-suite Public

    Playwright + TypeScript automation framework featuring UI, API, database testing and GitHub Actions CI.

    TypeScript

  3. saucedemo-complete-automation-suite saucedemo-complete-automation-suite Public

    Complete QA Automation Suite built with Playwright and TypeScript, featuring UI testing, API testing, Page Object Model (POM), and end-to-end automation.

    TypeScript

  4. restful-booker-postman-api-testing restful-booker-postman-api-testing Public

    Postman API testing portfolio project covering CRUD operations, authentication, request chaining, automated assertions, and negative testing.