Manual QA Engineer for CRM & Data Team

Title: Manual QA Engineer for CRM & Data Team Location: Warsaw

Why this role exists:

The purpose of this role is to ensure software quality and system reliability across Web applications, Backend layers, and REST APIs. The engineer independently identifies risks, defines test coverage, and localizes root causes across client, database, and integration environments to support release decisions.

What you’ll drive:

Test strategy & coverage

• Analyze requirements and product changes, identify gaps and risks, and define the right test coverage.

• Design and execute functional, regression, integration, exploratory, and end-to-end testing.

• Validate functionality across UI, API, database, and integration layers.

• Assess regression and release risks and make quality visible before changes go live.

Investigation & debugging

• Investigate defects and localize issues across client, backend, data, integrations, and environments.

• Use browser DevTools, network debugging, proxy tools, API tools, logs, and databases to get to the root cause.

• Inspect HTTP/HTTPS requests and responses to troubleshoot issues.

• Verify bug fixes and make sure changes don’t introduce new problems.

Web & Backend QA

• Test Web applications across relevant user flows, integrations, and edge cases.

• Test REST APIs and Backend functionality, including authentication, authorization, and API communication.

• Validate data using SQL queries and relational databases.

• Work with API tools such as Postman, Swagger, or similar.

Releases & cross-team collaboration

• Support software releases and contribute to release readiness decisions.

• Communicate testing progress, blockers, risks, and quality clearly to the team.

• Work with developers and other stakeholders to investigate issues and unblock delivery.

• Contribute to improving QA processes, documentation, and testing approaches.

QA Pool adaptability

• Quickly understand new products, technical areas, and testing contexts.

• Bring a generalist QA mindset and apply the right testing approach rather than relying on one fixed process.

• Work independently while knowing when to ask questions, challenge assumptions, or raise a risk.

What makes you a GR8 fit:

Must-have

• Solid hands-on experience in Software Testing / Manual QA and the ability to work independently.

• Strong experience testing Web applications.

• Strong hands-on experience with Backend and REST API testing.

• Good understanding of HTTP, client-server architecture, authentication, authorization, and API communication.

• Confident use of API testing tools such as Postman, Swagger, or similar.

• Good understanding of relational databases and ability to write SQL queries for data validation.

• Strong debugging skills, including browser DevTools, network analysis, and traffic interception tools such as Charles Proxy, Proxyman, Fiddler, or similar.

• Ability to investigate issues across UI, API, database, and integration layers.

• Hands-on experience with Git and common development/release workflows, including branches, merges, pull requests, tags/releases, and basic conflict resolution.

• Experience supporting software releases and understanding of functional, regression, integration, exploratory, and end-to-end testing.

• Ability to work with incomplete requirements, ask the right questions, identify risks, and build sufficient test coverage.

• Practical experience using AI tools in day-to-day QA work, such as Claude Code, ChatGPT, or similar tools, and willingness to incorporate AI into testing and problem-solving workflows.

• Intermediate English or higher, with fluency in Ukrainian or Russian.

Nice-to-have

• Practical experience with Kafka or similar message brokers and the ability to read and analyze messages/events.

• Understanding of asynchronous and event-driven communication and microservices architecture.

• Familiarity with CI/CD pipelines, Docker, Kubernetes, or cloud environments.

• Basic experience with test automation or scripting, and/or performance or load testing.

• Experience working with high-load or product-based environments.