Blockchain Senior Java Engineer - Digital Assets Platform - VP

Citi; New York (NY); Hybrid; USD 180,000 - 250,000; Full time

Job summary

Citi is seeking a passionate and senior Blockchain Senior Java Engineer to join the Digital Assets Platform engineering team. This hands-on role focuses on designing and delivering Web3-native components, smart contracts, and enterprise-grade backend services that power institutional digital finance capabilities.

You will collaborate with distributed teams to implement asynchronous architectures, integrate with Ethereum-like networks, and ensure security, performance, and resilience across the

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related discipline.
• 10 to 15 years of software engineering experience, with a strong backend development foundation.
• 3 to 5 years of hands-on Web3 and blockchain development, including smart contract development.
• 8 to 12 years of experience with backend development using Java/Spring, Node.js, or equivalent enterprise frameworks.

Responsibilities

• Design, develop, and deploy Web3 components and integrations for Citi's Digital Asset Platform, including smart contracts, on-chain event listeners, wallet integrations, and blockchain protocol connectors.
• Build and maintain backend services that interface with public and permissioned blockchain networks (e.g., Ethereum, Hyperledger Besu, Canton, Solana, or equivalent).
• Develop, test, and audit smart contracts written in Solidity or equivalent languages, ensuring security, correctness, and gas efficiency.
• Integrate Web3 libraries and SDKs (e.g., Web3J, Web3JS, Ethers.js, Viem) into enterprise Java and/or Node.js backend services.
• Implement asynchronous, event-driven architectures to handle on-chain events, transaction lifecycle management, and blockchain state synchronization.
• Collaborate with architects and senior engineers to contribute to the design of scalable, secure, and resilient Web3 infrastructure.
• Participate in code reviews, providing and receiving constructive technical feedback to maintain high engineering standards.
• Stay current with the rapidly evolving Web3 ecosystem — tracking protocol upgrades, new token standards, Layer 2 solutions, and emerging tooling relevant to institutional use cases.

Skills

Java/Spring backend

Node.js backend

Web3 development

Smart contract development

Blockchain integration

Agile/Scrum

Education

Bachelor's degree in CS/Engineering

MS is a plus

Tools

Web3J

Web3JS

Ethers.js

Viem

Job description

Blockchain Senior Java Engineer - Digital Assets Platform - VP

New York, New York, United States

Hybrid

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of approximately 219,000 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.

Job Overview

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.

Job Overview

Citi is seeking a passionate and skilled Digital Assets Web3 Blockchain Engineer to join the Citi Integrated Digital Assets Platform (CIDAP) engineering team. This is a hands-on engineering role for a developer who is deeply enthusiastic about the intersection of decentralized technologies and institutional finance.

The successful candidate will contribute to the design, development, and deployment of Web3-native components and integrations that power Citi's digital asset infrastructure — spanning tokenization, smart contracts, on-chain settlement, and blockchain protocol integrations. You will work within a collaborative, globally distributed team of engineers, architects, and business technologists who are building the next generation of institutional digital finance capabilities.

We are looking for someone who brings strong Web3 engineering fundamentals, a curiosity for emerging blockchain ecosystems, and the ability to bridge decentralized technology patterns with enterprise-grade software standards.

Key Responsibilities

• Design, develop, and deploy Web3 components and integrations for Citi's Digital Asset Platform, including smart contracts, on-chain event listeners, wallet integrations, and blockchain protocol connectors
• Build and maintain backend services that interface with public and permissioned blockchain networks (e.g., Ethereum, Hyperledger Besu, Canton, Solana, or equivalent)
• Develop, test, and audit smart contracts written in Solidity or equivalent languages, ensuring security, correctness, and gas efficiency
• Integrate Web3 libraries and SDKs (e.g., Web3J, Web3JS, Ethers.js, Viem) into enterprise Java and/or Node.js backend services
• Implement asynchronous, event-driven architectures to handle on-chain events, transaction lifecycle management, and blockchain state synchronization
• Collaborate with architects and senior engineers to contribute to the design of scalable, secure, and resilient Web3 infrastructure
• Participate in code reviews, providing and receiving constructive technical feedback to maintain high engineering standards
• Support the integration of digital asset custody solutions, tokenization frameworks, and DeFi/TradFi bridging components
• Contribute to technical documentation, including smart contract specifications, integration guides, and architecture notes
• Stay current with the rapidly evolving Web3 ecosystem — tracking protocol upgrades, new token standards, Layer 2 solutions, and emerging tooling relevant to institutional use cases
• Work within Agile/Scrum frameworks, participating in sprint planning, stand-ups, and retrospectives within a distributed global team
• Help identify and resolve technical issues across the Web3 stack, escalating where appropriate to ensure delivery quality and timelines

Qualifications / Experience

• Bachelor's degree in Computer Science, Engineering, or a related discipline; MS is a plus
• 10 to 15 years of overall software engineering experience, with a strong backend development foundation
• 3 to 5 years of hands-on experience in Web3 and blockchain application development, including smart contract development and blockchain protocol integration
• 8 to 12 years of experience with backend development using Java/Spring, Node.js, or equivalent enterprise frameworks