Senior QA Engineer Position
Core
Own quality for Xsolla's smart wallet on Xsolla ZK, an Ethereum-compatible ZK rollup, testing on-chain contracts, transactions, and the full flow from client RPC calls to finality.
Role type
Senior QA Engineer (Blockchain/ZK-Rollup)
Builds
Automated test suites for smart wallet functionality and on-chain transaction flows
Domain
Blockchain / Zero-Knowledge Rollups / Cryptocurrency
Required skills
Smart contract testing, on-chain transaction validation, RPC call tracing, chain forking, command-line contract deployment, automated test suite creation, defect isolation (code vs SDK vs chain), AI coding tools setup
Preferred skills
ZK-rollup architecture knowledge, Ethereum ecosystem familiarity, blockchain security testing
Technologies
Ethereum, ZK rollups, RPC, bundlers, smart contracts, command-line tools, AI coding tools
Responsibilities
Confirm wallet address deployment from salt pre-computation, trace signed operations from client RPC to finality, fork the chain to test against real state, deploy and call contracts from the command line, create automated test suites, distinguish defects in code, partner SDKs, or the chain itself
Seniority
Senior, hands-on IC
