Full Stack QA Engineer (Baсkend)

Tangem is a high-tech company in the blockchain sector was founded in 2017, headquartered in Zug, Switzerland, with branches in North America, Eastern Europe, and APAC.

Tangem started with the idea of bringing digital assets to the masses using a unique combination of a smartcard-based hardware wallet and mobile applications. Company owns and promotes the technology of hardware cold-wallet for digital assets with secure and simple UX in 220 countries today. Our customers enjoy setup time within 1 minute with the ultimate security level for digital assets on their wallet. Tangem solutions offer multi-support of a growing number of thousands of tokens by a single wallet. SBI Crypto Investment Ltd., the digital asset venture investment company wholly owned by SBI Holdings Inc., has invested $15 million into Tangem in 2019 for mass adoption of blockchain technology.

Core Tech Stack: Python, Pytest, HTTPX/Requests, Allure/Allure TestOps, GitHub Actions, Docker, AWS SQS, Postman/Hoppscotch, Shell, Grafana, PostgreSQL.

Responsibilities

• End-to-End Testing: Perform in-depth manual and automated testing of backend APIs, and database integrations.
• Test Automation: Design, develop, and maintain automated test scripts for and APIs from scratch (using Python, Pytest, Playwright, and HTTPX/Requests) and actively support the existing test framework.
• New-Feature Testing: Review and validate requirements and technical specifications, ensuring comprehensive test coverage.
• Test Documentation: Develop, review, and execute detailed test plans and test cases based on functional and non-functional requirements.
• Infrastructure & CI/CD: Integrate automated tests into CI/CD pipelines (GitHub Actions, ArgoCD), configure test environments (Docker, Shell), and manage test reporting (Allure TestOps).
• Analysis & Planning: Review and validate requirements and technical specifications, ensuring comprehensive test coverage.
• Collaboration: Work closely with cross-functional teams (developers, product managers) to validate new features, verify bug fixes, and conduct regression testing.
• Mentorship: Mentor, onboard, and develop QA Engineers, sharing technical knowledge and best practices.
• Optimization: Design and enhance testing processes, optimizing routine workflows (including the use of AI tools).

Requirements

• Experience: 5+ years of overall QA experience, including solid hands-on experience in test automation (Python) and a strong background in manual backend testing for complex applications.
• Core Tech Stack: Python, Pytest, Locust, HTTPX/Requests, Allure/Allure TestOps, GitHub Actions, Docker, Kafka, Postman/Hoppscotch, Shell, Grafana, ArgoCD, PostgreSQL.
• Deep understanding of microservices architecture (ability to test service-to-service communication, data flows, and fault tolerance).
• Proven experience in API testing (HTTP/WS) and related tools.
• Practical experience with relational databases (PostgreSQL) and message brokers (Kafka).
• Proficiency in working with logs, monitoring systems (Grafana), and containerization (Docker).
• Soft Skills & Processes: Strong analytical and critical-thinking skills, solid understanding of software testing methodologies, and experience working in an Agile (Scrum) environment.
• Modern Tools: Proficiency with LLMs to accelerate test documentation creation and optimize testing processes.

Nice to have:

• Experience with implementing AI tools in day-to-day tasks;
• FinTech / Crypto Experience: Experience working with financial or cryptocurrency products, along with an understanding of transaction specifics and high-security requirements, is highly desirable.
• Experience in Load Testing

Benefits

• Stability, development, participation in the future unicorn's growth;
• Remote work from anywhere in the world, excluding Russia and Belarus, with a schedule aligned with GMT+3;
• Competitive salary in EURO/USDT;
• Unlimited Paid Time Off;
• Birthday presents;
• Compensation for the purchase of necessary technical devices for the work.