Senior Test Engineer (E-commerce Platform) at Sigma Software · Warsaw

companyDescription
Join Sigma Software as a Senior Test Engineer and help shape the quality of a cutting-edge social shopping platform that blends e-commerce with social networking. This role offers the opportunity to work on a high-impact product used by millions of fashion lovers worldwide.
You will be part of our Mobile & Web Solutions department, collaborating with talented professionals and applying the Quality Assistance model to ensure exceptional user experiences.
We at Sigma Software value innovation, teamwork, and professional growth. By joining us, you will gain access to diverse projects, supportive colleagues, and a culture that rewards initiative and expertise.
CUSTOMER

Global marketplace for fashion, combining e-commerce with social networking features. It enables users to sell customized or rare clothes and accessories, promoting sustainable consumption by recycling unwanted items for money.
PROJECT

The project is a social shopping platform where users create profile pages to post pictures and descriptions of items for sale, enhanced with hashtags for easier discovery. Focused on clothes retail, it aims to deliver an evocative buying and selling experience. Key tasks include payment system integration and accessibility feature implementation.
jobDescription
Work as part of the product development team, collaborating closely with customer-side developers
Follow and support the Quality Assistance process
Plan and estimate testing activities
Create and maintain test documentation
Design and execute manual, snapshot, and UI tests for new features
Perform Functional, Regression, and Compatibility testing across Web and Mobile platforms
Conduct release validation, smoke testing, and post-deployment quality checks
Provide clear and regular status and progress reports
Collaborate with product owners, business analysts, and development teams to ensure product quality
Identify, document, and communicate risks and issues constructively
qualifications
4,5+ years of QA experience with end-to-end ownership of testing processes
Strong exploratory testing skills beyond scripted test cases
Experience testing mobile apps (iOS and Android), including release processes
Ability to work autonomously across multiple cross-functional teams
Familiarity with agile workflows, feature flags, and staged rollouts
Strong requirements analysis skills, able to clarify edge/corner scenarios
Comfortable with context switching and supporting multiple teams in parallel
SQL — ability to write moderately complex queries
API Testing — hands-on experience with REST APIs using tools like Postman
Solid understanding of HTML, CSS, cookies, caching, browser behavior
Experience deploying builds via Android Studio, Xcode, or similar tools
Git — practical experience with branches, commits, code reviews, pull/merge requests
Upper-Intermediate+ English proficiency
additionalInformation