Manual QA (Backend)
Manual QA Engineer focused on backend testing for a live-streaming and social networking product. Day to day: testing REST APIs and WebSocket flows with Postman/Swagger/curl, validating data in MongoDB, running smoke/regression and A/B/monetization tests, writing test docs in Qase/Jira, and investigating bugs via Grafana logs and metrics.
- Compensation
- Not disclosed
- Location
- Europe
- Work setup
- Remote
- Seniority
- Not specified
- Employment
- Not specified
- Experience
- 2+ years
- Category
- Backend
- Posted
Skills
Must have
- 2+ years of experience in manual backend testing using API tools such as Postman, Swagger, or curl
- Hands-on experience with MongoDB: queries with filters/projections, aggregation pipelines (confident SQL is an alternative)
- Understanding of HTTP and REST fundamentals: methods, status codes, headers, token-based auth, REST vs WebSocket
- Knowledge of test design techniques: equivalence partitioning, boundary value analysis, decision tables
- Experience with test management systems such as Qase or TestRail; using Jira and Confluence
- Experience with MongoDB Compass or mongosh
- Experience testing A/B experiments and analytics events, including BigQuery or SQL
- Experience testing payment and subscription flows, including Apple/Google in-app purchases and web billing
- Intermediate (B1) level of English or higher
Nice to have
- Familiarity with Grafana, Loki, or Kibana for log and metrics analysis
- Basic API test automation skills using JavaScript/TypeScript or Postman tests
- Experience with proxy debugging tools such as Charles or Proxyman
Full description
We are looking for a Manual QA Engineer (Backend). In this role, you will dive deep into backend testing, working with both relational and document-oriented databases, REST API clients, Proxy tools, and analytics. Also you will test marketing logics, ensure seamless data accuracy, and directly influence the quality of a global-scale product. You will be part of a fast, responsive team with minimal bureaucracy, open communication, and the opportunity to grow through working with automation testing tools
About the company: United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide. Are you in?
In this role, you will
Perform manual testing of backend REST APIs and WebSocket flows using Postman, Swagger, and curl
Validate data and prepare test states in MongoDB
Test new backend features, verify bug fixes, and perform smoke, sanity, and regression testing before releases, including post-release production checks
Create and maintain test documentation, including test cases in Qase, checklists, and bug reports in Jira
Review product requirements and technical designs before implementation
Test A/B experiments, monetization flows, and analytics events, and work with internal tools such as admin panels, brand settings, and feature flags
Investigate bugs using logs and metrics in Grafana, identify root causes, and distinguish between client-side and backend issues while contributing to improved testing efficiency and quality
It’s all about you
Have 2+ years of experience in manual backend testing using API tools such as Postman, Swagger, or curl
Have hands-on experience with MongoDB, including writing queries with filters and projections and using aggregation pipelines; confident SQL skills are an alternative, while MongoDB experience is preferred
Understand HTTP and REST fundamentals, including methods, status codes, headers, and token-based authorization, as well as the differences between REST and WebSocket
Know test design techniques such as equivalence partitioning, boundary value analysis, and decision tables
Have experience with test management systems such as Qase, TestRail, or similar tools, and use Jira and Confluence in your work
Have experience with MongoDB Compass or mongosh
Have experience testing A/B experiments and analytics events, including working with BigQuery or SQL