Senior QA Engineer

About the job

Role summary

Genius is building a professional, high-velocity on-chain trading terminal where correctness, determinism, and execution integrity are non-negotiable. This role owns automated testing across both the frontend interface and the on-chain execution layer.

The Senior QA Engineer is responsible for designing, implementing, and maintaining automated test coverage that continuously validates UI behavior, backend coordination, and on-chain state transitions.

This is an automation-first role with real ownership over quality infrastructure.

Core responsibilities

• Design and maintain automated test suites covering:
• Frontend user flows (wallet connection, balances, trading, error states)
• Backend coordination and API contracts
• On-chain execution flows and state transitions
• Build deterministic tests for:
• Order submission and cancellation
• Slippage enforcement and fee calculation
• Transaction lifecycle (submitted, pending, confirmed, reverted)
• Balance and position reconciliation between UI and chain
• Automate regression coverage for critical trading paths
• Validate frontend state against on-chain truth
• Create mocks, fixtures, and local chain environments where appropriate
• Integrate automated tests into CI/CD pipelines
• Triage failures and distinguish product bugs from test instability
• Work closely with engineers to enforce testability at the architecture level

Required qualifications

• 5+ years experience in QA engineering with a strong automation focus
• Proven experience testing complex, stateful systems
• Strong proficiency with modern test frameworks for:
• Frontend automation (e.g. Playwright, Cypress, Selenium)
• API and integration testing
• Ability to design deterministic, non-flaky tests
• Strong debugging skills across frontend, backend, and execution layers
• Clear written communication and disciplined documentation

Preferred qualifications

• Experience testing trading systems, financial platforms, or real-time systems
• Familiarity with blockchain execution models and on-chain state
• Working knowledge (or fast ramp-up ability) on concepts such as:
• Wallets and signing flows
• Gas estimation and failures
• Slippage, MEV, and partial execution scenarios
• Experience running tests against:
• Local chains or forks
• Testnets and simulated mainnet conditions

Explicitly not part of this role

• Manual-only testing without automation ownership
• Writing superficial UI tests that do not validate execution correctness
• Treating QA as a downstream or passive function

Success criteria

• High-confidence releases backed by automated coverage
• Early detection of execution-breaking regressions
• Low test flakiness and fast CI signal
• Clear ownership of quality across frontend and on-chain execution

Read the job posting on the Shuttle Labs site