Senior Software Development Engineer in Test

ATCOM is the leading digital business agency in Greece and handles a selection of significant digital projects and solutions in Greece in a variety of sectors, such as Β2C & B2B commerce, finance, telco, travel, news portals, intranets or other business critical web and mobile applications, for the private and public sector. 

From the very beginning and through 2 decades of experience we have been valuing every colleague that contributes to our success. We believe in autonomy of individuals and teams, so we look for self-motivated and goal focused people. We want you to be passionate about your work and about creating digital solutions that you and your peers would love to use and be proud of. 

The ideal candidate is a talented individual with a passion for all things digital. They must have good organizational skills and the urge to promote an authentic, confident, visionary and customer focused face to existing and new clients and partners. 

We are looking for a detail-oriented and technically proficient Software Development Engineer in Test to join our engineering team. In this role, you will be responsible for designing and maintaining automated testing across our platform’s APIs, integrations, and front-end flows. 

You will help embed testability into our SDLC, support CI/CD integration, and drive a culture of continuous quality improvement. 

Responsibilities 

• Design, write, and maintain automated test plans and scripts focused on: API testing , Integration testing, End-to-End (E2E) UI testing
• Acceptance testing in collaboration with product owners 
• Collaborate with developers and product managers to ensure testability of features and clarity of requirements 
• Build and maintain automated test suites using modern tools (e.g., Playwright, Postman, REST-assured, or equivalent) 
• Integrate automated tests into CI/CD pipelines using Azure DevOps or similar systems 
• Proactively log, track, and verify defects, ensuring swift resolution and regression coverage 
• Define and monitor quality metrics (e.g., API coverage, test stability, regression escape rate) 
• Conduct manual exploratory testing to validate edge cases and complex workflows
• Perform load and performance testing to ensure system stability under varying conditions
• Advocate for an automation-first quality strategy, reducing reliance on repetitive manual testing 
• Provide feedback during requirement and design reviews on acceptance criteria, edge cases, and system interactions 

• Bachelor's degree in Computer Science, Engineering, or a related discipline 
• 5+ years in QA or SDET roles, with a strong focus on API, integration, and E2E automation
• Proven experience in: 

-API testing tools (e.g., Postman, REST-assured, or custom API test frameworks) 

-UI test automation frameworks (e.g., Playwright, Cypress, or Selenium) 

-Writing robust automated tests in C#, TypeScript

-Comfortable integrating automated tests into CI/CD pipelines (Azure DevOps or similar) 

• Familiarity with version control systems (preferably Git) 

• Experienced in testing microservices or distributed systems 

• Skilled in troubleshooting across layers (API, UI, logs, network) 

• Strong analytical and communication skills 

• A proactive, ownership-driven mindset, capable of working independently or embedded in dev squads 

🌟 Nice to Have 

• Experience with performance and load testing (e.g., k6, JMeter) 

• Familiarity with cloud platforms (especially Azure) 

✅ What Success Looks Like 

• Automated tests are reliable, fast, and integrated into daily pipelines 

• New features are shipped with confidence thanks to broad test coverage 

• Bugs are caught early, and regression issues are rare 

• Automation allows for frequent, low-risk releases without over-reliance on manual QA 

• The SDET is seen as a quality multiplier across the engineering org 

• In-house training & education 
• Healthcare (private insurance) 
• Paid training 
• Attendance at conferences and events 
• Competitive compensation package 
• Excellent career prospects 
• A variety of standard and seasonal office perks and surprises