Tangem

Full stack QA engineer (auto) in blockchain

In short

Senior QA Engineer role at Tangem, a blockchain hardware-wallet company, focused on manual and automated backend/API testing using Python, Pytest, Playwright, and HTTPX/Requests. The role requires 5+ years of QA experience, deep knowledge of microservices, PostgreSQL, Kafka, Docker, and CI/CD tooling (GitHub Actions, ArgoCD, Allure TestOps), plus mentoring QA engineers. Fully remote (excluding Russia and Belarus) with a GMT+3-aligned schedule.

About the Company
Tangem is a high-tech company in the blockchain sector, 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. The company owns and promotes the technology of a hardware cold-wallet for digital assets with secure and simple UX in 220 countries today.
Responsibilities
•Perform in-depth manual and automated testing of backend APIs, and database integrations.
•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.
•Review and validate requirements and technical specifications, ensuring comprehensive test coverage.
•Develop, review, and execute detailed test plans and test cases based on functional and non-functional requirements.
•Integrate automated tests into CI/CD pipelines (GitHub Actions, ArgoCD), configure test environments (Docker, Shell), and manage test reporting (Allure TestOps).
•Review and validate requirements and technical specifications, ensuring comprehensive test coverage.
•Work closely with cross-functional teams (developers, product managers) to validate new features, verify bug fixes, and conduct regression testing.
•Mentor, onboard, and develop QA Engineers, sharing technical knowledge and best practices.
•Design and enhance testing processes, optimizing routine workflows (including the use of AI tools).
Requirements
•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.
•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).
•Strong analytical and critical-thinking skills, solid understanding of software testing methodologies, and experience working in an Agile (Scrum) environment.
•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.
Conditions
•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.

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