Manual QA Engineer (Backend) at vacancies

We are building one of the most powerful live-streaming platforms, already connecting 400K+ monthly active users through live events, interactive video chats, and real-time community experiences. Our mission is bold: bring joy, fight loneliness, and deliver safe, ad-free entertainment that keeps people coming back. This is a complex, fast-moving space, and we love it that way! Every idea counts here, and every release reaches a massive global audience. We are now expanding into Arab countries and Europe, enhancing content quality, and rolling out new features to keep users hooked. We are among the Top 5 streaming products in the US and rank in the Top 10 worldwide. Our next milestone: break into the global Top 5, and we are moving fast to make it happen.  About the role: We are looking for a Manual QA Engineer (Backend) who will become a key quality owner within the team — someone who is not just testing endpoints, but deeply understands product logic, user flows, and how backend stability directly impacts user experience at scale. In this role, you will • Perform manual backend testing using API tools and databases for Mobile and Web applications • Conduct smoke, sanity, regression, and functional testing for new and existing features • Create and maintain test documentation including test cases, checklists, and bug reports • Participate in SCRUM ceremonies and all stages of the SDLC • Analyze requirements and actively participate in feature decomposition and estimations • Investigate, reproduce, and report bugs with clear prioritization and detailed context • Collaborate closely with developers, product managers, and other stakeholders as a QA feature owner • Validate A/B tests and support feature quality during experiments and releases It’s all about you • 2+ years of commercial experience in backend manual testing • Experience testing mobile applications (iOS and/or Android) • Strong practical knowledge of Postman, Swagger, and API testing approaches • Experience working with proxy/debugging tools such as Charles, Fiddler, or similar • Experience testing backend systems using relational or non-relational databases (SQL, PostgreSQL, MongoDB, etc.) • Understanding of QA processes, SDLC, Scrum, DoR, and DoD principles • Experience creating test documentation from scratch • Ability to analyze requirements and identify edge cases independently • Experience working with Jira and Confluence • Experience with A/B testing and validating experiment results • Intermediate+ level of English • Ability to quickly understand complex product logic and new technical concepts Would be a plus: • Experience with A/B testing • Experience collaborating with Product Support teams • Expertise with MongoDB testing What we offer Care and support: • 20 paid vacation days, 15 sick days, and 6 additional days off for family events • Up to 10 additional days off for public holidays • 100% medical insurance coverage • Sports and equipment reimbursement • Team building events, corporate gifts, and stylish merch • Financial and legal support • Maternity recovery support allowance • Position retention and support for those who join the Armed Forces of Ukraine • Participation in social initiatives supporting Ukraine Comfortable working environment: • Work from our Kyiv hub or remotely with a flexible schedule • Modern equipment or depreciation of your own tools Investment in your future: • Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche • 70% of our heads and leads have grown into their roles here – so can you! • Performance-oriented reviews and Individual Development Plans (IDPs) • Reimbursement for professional courses and English classes • Corporate library, book club, and knowledge-sharing events Hiring Process • Intro call • Technical interview • Test task • Final interview • Reference check • Offer