• Develop and maintain smart contracts that implement the Wanchain Message Bridge Protocol • Write high-quality Solidity code • Implement and interact with various interfaces provided by the Wanchain Message Bridge Protocol • Leverage the Wanchain Message Bridge Protocol for cross-chain communication • Prioritize the security of smart contracts • Create comprehensive documentation for smart contracts • Conduct thorough testing of smart contracts • Optimize smart contract code to maximize gas efficiency

• Building secure, high-value smart contracts on EVM • Collaborate with auditors and write audit-friendly test cases • Prioritize security and ensure reliable deployment • Communicate with auditors and revise code based on feedback • Maintain knowledge of common vulnerabilities and security practices

Senior/Lead EVM Engineer - Distributed Ledger Optimization Location: Remote - US Compensation: Competitive We are a fast-growing software company dedicated to supporting and evolving a leading open-source, proof-of-stake distributed ledger platform. Our network is EVM-compatible and specifically engineered to meet the demands of enterprise and Web3 applications that require industry-leading speed, security, and sustainability. We are looking for a Seasoned Java Engineer with deep blockchain protocol experience to join our Smart Contracts Team. In this role, you will be a key contributor to the evolution and optimization of our EVM implementation. You will work on a "plain Java" codebase (no heavy frameworks) where high performance, low latency, and high throughput are the baseline requirements. Key Responsibilities: - Collaborate daily on the design and implementation of core blockchain features. - Innovate on transaction processing, execution algorithms, and EVM opcodes. - Bridge the gap between the Ethereum roadmap and our native network innovations. - Contribute to open-source clients focusing on VM state transitions and performance improvements. - Implement community-requested improvement proposals (HIPs). - Test and validate the EVM using both Ethereum community tools and native consensus node testing suites. - Focus on Craft: Spend approximately 80% of your time designing, coding, and testing.

Role Description As an SVM Engineer, you will design, implement, and optimize smart contracts and DeFi protocols on the Solana Virtual Machine. With a special focus on vault architecture and security, you'll be responsible for creating robust financial applications that maintain the highest standards of security while delivering exceptional performance. Responsibilities - Design and develop smart contracts and DeFi protocols on the Solana Virtual Machine - Build and optimize secure vault systems for asset management and yield strategies - Collaborate with security teams to ensure protocols are protected against exploits - Integrate with existing DeFi protocols and establish cross-protocol compatibility - Optimize code for Solana's parallel execution environment - Conduct thorough testing and debugging of smart contracts - Research and implement innovative solutions to improve scalability and reduce transaction costs - Stay current with the latest developments in the Solana ecosystem and DeFi space - Contribute to technical documentation and knowledge sharing Qualifications - Experience building, deploying, and maintaining SVM smart contracts in production - Strong programming experience in Rust - Deep understanding of Solana and low-level SVM concepts - Thorough understanding of the Solana Virtual Machine architecture and its constraints - Experience building DeFi protocols (lending, trading, yield farming, etc.) - Knowledge of cryptographic principles and blockchain security best practices - Familiarity with Solana Program Library (SPL) and ecosystem tools - Understanding of vault architectures in DeFi contexts - Experience with on-chain security patterns and common vulnerabilities - Solid grasp of financial concepts as they apply to decentralized finance - Problem-solving attitude and ability to work in a fast-paced environment Requirements - Track record of creating audited and battle-tested smart contracts - Strong systems engineering fundamentals - Experience with production systems that scaled past their original design - Previous experience building vault protocols on Solana or other blockchains - Contributions to open-source Solana projects - Experience with Anchor framework for Solana development - Knowledge of other blockchain platforms (Ethereum, Near, etc.) for cross-chain compatibility - Familiarity with front-end frameworks for dApp development (React, etc.) Benefits - Competitive base salary plus equity - Access to comprehensive medical, dental, and life insurance in the US Compensation Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.