Senior Crypto QA Tester - Manual, API & GUI, Remote

XM; Polska; Remote; PLN 218,000 - 306,000; Full time

Benefits offered by this job

Attractive remuneration package

Intellectually stimulating work环境

Continuous personal development and国际培

International training opportunities

Job summary

XM is seeking a QA engineer to join cross-functional, agile tech teams ensuring quality across development. You will test front-end, back-end, and E2E flows, validate crypto trading workflows, and contribute to test strategy and documentation. Strong English skills and methodical approach are essential.

The role involves staying updated on testing trends, working with DB and API testing, and supporting high-throughput trading systems with rigorous validation.

Qualifications

• BSc/MSc in Computer science required.
• 3+ years of experience in manual testing of software products.
• 1+ year of QA experience in crypto, blockchain, Web3, DeFi, or digital asset platforms.
• Practical experience validating blockchain-related workflows such as wallets, transactions, asset transfers, or network interactions.
• Experience testing trading, exchange, fintech, or payment platforms with complex transactional flows.
• Practical experience in GUI and API testing is a must.
• Knowledge of SQL and database concepts.
• Strong knowledge and experience in software testing concepts and methodologies.
• Strong interpersonal and organisational skills, English proficiency.

Responsibilities

• Understand and clarify business requirements, features, and technical implementation.
• Enhance software delivery and quality throughout the entire software development cycle.
• Ensure that software meets functional and non-functional requirements.
• Stay up to date on the latest testing trends and technologies related to DB and API.
• Report testing status to project teams and Head of the QA department.
• Track issues and drive resolutions throughout the testing process.
• Manage in-house testing documentation, write and continuously review test strategy.
• Validate crypto trading flows including order placement, execution, and settlement.
• Participate in testing high-availability and high-throughput systems handling real-time trading data.

Skills

Manual testing

API testing

GUI testing

SQL

Test strategy

Documentation

Agile methods

English communication

Analytical thinking

Crypto/blockchain knowledge

Education

BSc/MSc in Computer science

Tools

ISTQB

Job description

XM is seeking a QA engineer to join cross-functional, agile tech teams ensuring quality across development. You will test front-end, back-end, and E2E flows, validate crypto trading workflows, and contribute to test strategy and documentation. Strong English skills and methodical approach are essential.

The role involves staying updated on testing trends, working with DB and API testing, and supporting high-throughput trading systems with rigorous validation.