Hiring: Software Engineer II - Blockchain Company: Mastercard Location: Arlington, VA Job Posted Time: 2026-09-17 05:00:01 Employment Type: Contract / Hybrid Target Skills & Keywords : AWS, Agile, Angular, Azure, Blockchain, CI/CD, Docker, Ethereum, Ethers.js, Foundry, GCP, Git, Hardhat, Java, JavaScript, LLM, Polygon, React, Smart Contracts, Solana, Solidity, Spring, Spring Boot, TypeScript, Web3, Web3.js About the job Required Skills: •Be part of a highly collaborative Agile team building innovative, scalable products leveraging blockchain technologies and components for global markets. •Work alongside experienced engineers to design, develop, test, and support Ethereum/EVM and Web3 solutions, contributing to enterprise-grade applications with a focus on scalability, security, reliability, and performance. •At Mastercard you will help architect and lead the future of commerce globally. Qualifications: •Solid functional working knowledge of Solidity and experience developing or maintaining smart contracts. •Understanding of blockchain fundamentals, including transactions, wallets, gas concepts, and common security considerations. •Operational familiarity with smart contract development frameworks such as Hardhat, Foundry, or similar toolchains. •Knowledge of software engineering principles, object-oriented programming, and modern development practices. •Operational familiarity with source control systems such as Git and collaborative software development practices. •Exposure to containerization technologies such as Docker and cloud-native development concepts. •Operational familiarity with CI/CD pipelines and automation tools. •Demonstrated capacity to learn new technologies quickly and contribute effectively in a fast-paced Agile environment. •Strong problem-solving, communication, and collaboration skills. •Commitment to code quality, maintainability, security, and continuous improvement. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!