Lead Web3 Engineer - Digital Assets Platform

Lead Web3 Engineer - Digital Assets Platform

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

An Digital Assets Platform Web3 Engineer must be a highly motivated and proactive hands‑on software engineer (Back End, Java Focus), have a proven ability and experience working with web applications in production. The successful candidate will be part of the core team continuing to build our Citi Integrated Digital Assets Platform (CIDAP). The ideal candidate will be a self‑driven, proactive, strong enterprise developer and resourceful team player who can comfortably work with a large team of highly motivated individuals within Citi’s larger softwzare engineering network.

We are looking for candidates who understand how to build the backend of enterprise‑grade web applications. The successful individual should understand the basics of web3 infrastructure, blockchain technology and digital assets, and must be a strong enterprise developer of web applications. Experience and knowledge of web3 application development is a plus.

• Develop, test, and maintain backend software components and services that integrate with blockchain networks and digital asset infrastructure
• Implement blockchain integrations — including node connectivity, transaction submission, on‑chain event monitoring, and wallet interactions — using enterprise Java and Web3 libraries
• Write, test, and deploy smart contracts in Solidity or equivalent languages, following established security and quality standards
• Build and maintain APIs and microservices that expose blockchain functionality to upstream platform consumers and business applications
• Implement asynchronous and event‑driven processing to manage transaction lifecycle, on‑chain state changes, and blockchain data synchronization
• Participate actively in code reviews, contributing constructive feedback and maintaining high standards of code quality, readability, and test coverage
• Collaborate with architects, senior engineers, and product teams to understand requirements and translate them into well‑structured, maintainable software solutions
• Contribute to technical documentation including component design notes, API specifications, and integration guides
• Support debugging, troubleshooting, and resolution of issues across the blockchain software stack in development and production environments
• Follow and contribute to engineering best practices, coding standards, and Agile delivery processes within the team
• Stay informed of developments in the blockchain and Web3 ecosystem, including protocol updates, new tooling, and emerging standards relevant to the platform
• Participate in sprint ceremonies — planning, stand‑ups, reviews, and retrospectives — as part of an Agile/Scrum delivery team

• Bachelor’s degree in CS or Engineering; MS or PhD in computer science, or related discipline a plus
• Extensive experience in full software development and testing lifecycle. Experience from financial services industry is a plus.
• Proven experience and expertise with Backend web development with Java spring
• Solid experience in web3 application development is a plus
• Solid experience and expertise developing web applications using asynchronous programming and communication
• Experience and expertise developing web applications adhering to best practices and patterns for reliability, scalability, and performance
• Familiarity with web3 libraries like Web3J and Web3JS is a plus
• Familiarity with common and best practices for web3…