Test Engineer

SigmaSoftware2

Kyiv, Kyiv city, Ukraine Remote permanent

Posted: February 23, 2026

Job Description

We are looking for a Test Engineer to join one of our teams and help us build great products for our clients.

Join our Stellar team and become a part of a group of over 300 experts in the AdTech domain. What is Stellar? It’s a community, a network, and a dedicated business unit within Sigma Software that specializes in advertising technology solutions. Over the years, we’ve had opportunities to work with some of the largest AdTech companies in the world. We brought tons of AdTech startups from an idea to a thriving business. Since 2008, we’ve worked with advertising technology companies to help them envision, build, and support their technology.

We are building a Competence Center where we stay focused on exploring our domain to become the best specialists in the industry. If you strive to build long-term cooperation, develop business and partnerships with the best Customers, and are ready to commit to joint business development, this could be a perfect match.

• Analyze and clarify project requirements with stakeholders
• Plan, estimate, and organize testing activities for web and mobile applications
• Create and maintain test documentation (test cases, checklists, mind maps)
• Perform manual functional, regression, and compatibility testing across platforms
• Report, track, and verify resolution of defects
• Collaborate closely with cross-functional team members to ensure quality deliverables
• Provide clear and regular progress updates to the team and management

• 2+ years of experience in quality assurance
• Strong knowledge of functional testing, including test design techniques and change impact analysis
• Experience in manual functional, compatibility, usability, and integration testing
• Hands-on experience with web testing (DevTools, API, client-server applications)
• Ability to work with various formats of product requirements (e.g., user stories)
• Strong communication, reporting, and estimation skills
• Bachelor’s degree in Computer Science, Engineering, or related field
• Upper-Intermediate English level

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