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Led QA for multiple Web3 products including dApps, bridges, staking protocols, browser extensions, and DeFi analytics dashboards across Ethereum, Polygon, BNB Chain, and Polkadot ecosystems. Built automation frameworks using Selenium (Java + TestNG + POM) with reporting (Allure/Extent) and Cypress (JavaScript/Mocha-Chai), achieving 40–70% regression coverage and significantly reducing manual testing effort. Polkalokr Bridge: Validated cross-chain token locking & minting flows across Ethereum, Polygon, and Binance. Performed contract-level assertions, subgraph data validation, and API testing to ensure accuracy of escrowed token events. DAFI Protocol: Performed staking contract testing to validate reward calculation logic, emission schedules, and edge cases. Used Tenderly and Remix IDE for transaction debugging and event tracing. Metadot Wallet Extension (Polkadot): Conducted deep testing of extension-specific flows (account creation, key management, signing). Used extension testing utilities (Chrome DevTools, Redux DevTools, Selenium WebDriver) and validated RPC calls across multiple chains. Spock Analytics: Validated large-scale on-chain data aggregation (similar to DeFiLlama), tested SDK integration with wallets (MetaMask, WalletConnect, TrustWallet), and verified data consistency on analytics dashboards. Ensured accurate calculations and real-time updates under heavy load. Performed extensive API testing (Postman, GraphQL subgraphs) to validate contract → subgraph → frontend data pipelines across all projects. Performed database validation using MongoDB (Bridge Admin Panel) and PostgreSQL (Spock Analytics) to ensure on-chain/off-chain data consistency, verify large-scale analytics calculations, and perform CRUD operations for backend QA. Executed performance/load testing using JMeter and BlazeMeter, uncovering RPC and frontend bottlenecks and improving throughput for high-traffic scenarios. Collaborated with developers and product teams to define QA strategies, streamline CI/CD pipelines, and reduce regression cycle time. Created detailed test documentation, traceability matrices, and bug reports, improving release readiness and decreasing escaped defects.

Researched and analyzed ISO/IEC 27001:2013 ISMS standards, delivering a detailed presentation on compliance requirements and security controls to the Information Security team. Installed and configured Kali Linux to perform hands-on ethical hacking labs, including vulnerability scanning, password-cracking simulations, and penetration testing exercises. Gained practical exposure to risk assessment methodologies and enterprise security best practices, strengthening foundational knowledge in cybersecurity and compliance.