Blockchain Software Developer - Digital Assets Platform

Location: Greater London

## Blockchain Software Developer - Digital Assets Platform Apply remote type:
Hybrid locations:
London United Kingdom time type:
Full time posted on:
Posted Todayjob requisition :

** Blockchain Software Developer - Digital Assets Platform (Open)
**** 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 Blockchain Web3 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/Trad Fi 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
* ** Extensive
* * overall software engineering experience, with a strong backend development foundation
* ** Proven
* * hands-on experience in
** Web3 and blockchain application development**, including smart contract…