Senior QA Engineer – Social Shopping Platform

Sigma Software

Województwo mazowieckie

On-site

PLN 120,000 - 180,000

Full time

14 days+

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Job summary

Sigma Software invites a Senior Test Engineer to join our Mobile & Web Solutions team and shape the quality of a social shopping platform used by millions of fashion lovers worldwide. You will drive testing across Web and Mobile, ensuring top user experience through rigorous QA practices.

Join a collaborative environment that values initiative, continuous learning, and strong communication. You will design test strategies, execute manual and automated tests, and work closely with product owners,

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.

Responsibilities

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.