Onicore

Onicore is a FinTech company specializing in developing products for cryptocurrency operations. We strive to make crypto convenient and understandable for everyone.

And now we are looking for a talented and experienced Middle QA Engineer to join our team. If you’re passionate about working with the latest technologies, contributing to exciting product developments, and collaborating with an awesome team, we want to hear from you!

We’re looking for a Middle QA Engineer (Fintech / Crypto)
What You’ll Do:

• Test end-to-end user journeys across wallet, payments, card, and crypto-related functionality.
• Validate deposits, withdrawals, transfers, balance updates, currency conversions, and transaction processing.
• Verify integrations with payment providers, banking partners, blockchain services, and third-party systems.
• Investigate issues using DevTools, API requests, logs, databases, and monitoring tools.
• Design and execute test cases for new features and product releases.
• Identify edge cases and risks related to financial operations and transaction processing.
• Work closely with Product Managers, Developers, and Customer Support to maintain a high-quality user experience.
• Participate in release testing and production issue investigations.

What We’re Looking For:

• 2+ years of experience as a QA Engineer.
• Commercial experience testing fintech, crypto, banking, payment, or other transaction-heavy products.
• Strong understanding of:
— payments and payment flows;
— balances and ledger logic;
— transaction lifecycle and statuses;
— commissions and fee calculations.
• Understanding of cryptocurrency fundamentals:
— wallets;
— blockchain networks;
— deposits and withdrawals;
— transaction hashes;
— confirmations;
— gas and network fees.
• Understanding of the difference between networks and tokens (e.g. USDT ERC-20, TRC-20, BEP-20).
• Experience testing APIs and analyzing logs.
• Confidence working with DevTools, Postman, Swagger, or similar tools.
• Understanding of KYC, AML, user verification, limits, and fraud prevention concepts.

What’s on us:
— Competitive salary and benefits package.
— Opportunities for professional development and career growth.
— Health insurance.
— Remote work with the possibility to visit our office in Kyiv.
— Space to share your ideas and bring them to life.
Is this all about you? Send us your CV!