
Mubasser
Software QA Engineer
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Software Quality Assurance Engineer
ZECH Inc • Vollzeit
Apr 2022 - Present • 4 yrs 6 mos
I tested financial and blockchain products end to end On the exchange side, that meant verifying fees, interest, currency conversions and rounding down to the last decimal, checking that balances and ledgers matched across systems and validating order types, matching logic, partial fills and cancellations for spot and futures trading I also tested hot/cold wallet operations, deposits and withdrawals, KYC and compliance gates and order book behavior under high frequency and peak load On the Web3 side, I validated smart contract logic and gas optimization on testnets before deployment and tested token swaps, slippage handling, reverted transactions and MetaMask and WalletConnect signing and approval flows.