• Responsible for security related products planning and design, establishing the technical road-map, and completing the construction and coding implementation of important modules and core frameworks. • Define and implement architecture standards and best practices, responsible for underlying infrastructure / architecture maintenance, develop / maintain tools that automate operational activities and improve engineering productivity, provide automated continuous delivery and on-demand capacity management solutions. • Responsible for direct user requirements engagement, forming corresponding APIs for client delivery, and maintaining customer relationships. Continuously improve customer satisfaction. • Identify and solve technical issues in back-end systems, ensuring system performance and stability. • Performance tuning, online incidents troubleshooting, and system refactoring, optimize the products to maximize speed and scale. • Design and build libraries and frameworks that will be further used by internal clients, speed up development efficiency and improve code quality.

• Conduct security audits on smart contracts, wallets and blockchains, and write high-quality audit reports • Develop automated scanning and monitoring tools for smart contracts, wallets and blockchains • Utilize scanning tools to detect vulnerabilities in online contracts and promptly issue risk warnings • Conduct post-mortem analysis on various hacking incidents, examining the causes, processes, prevention, correction and basic fund tracing • Proactively identify on-chain risks, monitor and model emerging on-chain attack vector trends, and possess a solid understanding of on-chain security risks such as fraud and phishing • Demonstrate a strong understanding of EVM and non-EVM blockchains and layer 2 solutions, and be familiar with DeFi design patterns • Perform a review analysis on newly disclosed vulnerabilities for smart contracts and summarize the root cause behind the exploits for early detection in the future • Demonstrate good understanding of cryptography and Security solutions which is utilized under blockchain products • Conduct Pen Testing and reviews for blockchain products and provide high quality feedback

• Use AI coding assistants as a primary development accelerator across the full lifecycle • Apply LLM-driven workflows for automated code review, test generation, and security analysis • Critically evaluate AI-generated Solidity and Rust code for security vulnerabilities • Identify and implement opportunities to integrate AI tooling into team workflows • Design, develop, and deploy smart contracts across EVM-compatible networks and Stellar • Build and maintain multi-chain deployment infrastructure and tooling • Test and audit smart contracts using formal verification tools • Collaborate with engineers, product partners, and designers to translate business requirements into robust on-chain solutions

• Lead design and prototyping of long-term solutions to address scalability, latency, and state growth challenges on the Polygon PoS network. • Drive architectural decisions across the PoS codebase, contributing to Geth, Cosmos SDK, or CometBFT-based systems as needed. • Identify and resolve deep technical issues in protocol behavior, consensus, and state sync. • Champion code quality, documentation, testing, and developer best practices across the team. • Mentor and support engineers across the stack to elevate the overall engineering bar. • Collaborate cross-functionally with protocol researchers, DevOps, security, and ecosystem teams to ship robust upgrades to the live network.