Web3 Java Engineer — Institutional Digital Assets Platform

Citi; New York (NY); On-site; USD 142,000 - 213,000; Full time

Job summary

Citi in New York is seeking a passionate Blockchain/Web3 Java Engineer to join the CIDAP team. This hands-on role focuses on developing Web3-native components and integrations that power Citi's digital asset infrastructure, including tokenization, smart contracts, on-chain settlement, and protocol connectors.

You will work with a globally distributed engineering group, bridge decentralized patterns with enterprise software standards, and contribute to secure, scalable, and auditable Web3

Qualifications

• Bachelor's degree in CS, Engineering, or related field.
• 12+ years of software engineering experience.
• 3–5 years in Web3 and blockchain development.
• 4–6 years backend experience with Java/Spring or Node.js.
• Proficiency in Solidity and testing frameworks.
• Experience with Web3 libraries (Web3J, Web3JS, Ethers.js, Viem).
• Knowledge of token standards (ERC-20, ERC-721, ERC-1155).
• Familiarity with Hyperledger Besu, Solana, or Canton.
• Experience with asynchronous programming and message queuing.
• DevOps with Docker/Kubernetes and CI/CD.
• Understanding cryptography and secure key management.
• Exposure to Layer 2 scaling and cross-chain interoperability.
• Experience in financial services is a plus.
• Familiarity with Agile/Scrum and distributed teams.

Responsibilities

• Design, develop, and deploy Web3 components and integrations.
• Build backend services interfacing with blockchain networks.
• Develop, test, and audit smart contracts.
• Integrate Web3 libraries into enterprise Java and/or Node.js backends.
• Implement asynchronous, event-driven architectures for on‑chain events.
• Collaborate with architects to design scalable Web3 infra.
• Participate in code reviews and maintain engineering standards.
• Document smart contracts and integration guides.
• Stay updated on Web3 protocols and tooling.
• Work in Agile/Scrum in a distributed team.
• Identify and resolve technical issues across the Web3 stack.

Skills

Blockchain engineering

Java

Smart contracts

Web3 libraries

Node.js

Solidity

DAML

Security best practices

Education

Bachelor's degree in CS/Engineering

MS degree preferred

Tools

Web3J

Web3JS

Ethers.js

Viem

Docker

Kubernetes

Hardhat

Foundry

Truffle

Job description

Citi in New York is seeking a passionate Blockchain/Web3 Java Engineer to join the CIDAP team. This hands-on role focuses on developing Web3-native components and integrations that power Citi's digital asset infrastructure, including tokenization, smart contracts, on-chain settlement, and protocol connectors.

You will work with a globally distributed engineering group, bridge decentralized patterns with enterprise software standards, and contribute to secure, scalable, and auditable Web3