{"id":178458,"url":"https://alion.io/job/citi-lead-web3-engineer-digital-assets-platform","title":"Lead Web3 Engineer - Digital Assets Platform","company":{"id":7841,"name":"Citi","domain":"citi.com","url":"https://alion.io/company/citi","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":100,"open_postings":377,"ghost_share":0.008,"stale_share":0.003,"repost_share":0.088,"time_to_fill_p50_days":10,"computed_at":"2026-10-15T05:46:00Z"}},"role":"Web3","role_family":"Web3","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":82000,"max_usd":173000,"period":"year","method":null,"sample_n":62},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ethereum","optional":false},{"name":"Java","optional":false},{"name":"JavaScript","optional":false},{"name":"Agile","optional":true},{"name":"Docker","optional":true},{"name":"Foundry","optional":true},{"name":"Git","optional":true},{"name":"Hardhat","optional":true},{"name":"Jenkins","optional":true},{"name":"Jira","optional":true},{"name":"Platform Engineering","optional":true},{"name":"Scrum","optional":true},{"name":"Smart Contracts","optional":true},{"name":"Solidity","optional":true},{"name":"Web3.js","optional":true}],"status":"live","first_seen_at":"2026-08-03T00:00:00Z","employer_posted_date":"2026-08-03","last_verified_at":"2026-10-15T12:24:20Z","board_verified":true,"closed_at":null,"days_open":73,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":73},"description":"26983950 Lead Web3 Engineer - Digital Assets Platform\nDiscover your future at Citi\nWorking 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.\nJob Overview\nAn 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.\nWe 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.\nKey Responsibilities\nDevelop, test, and maintain backend software components and services that integrate with blockchain networks and digital asset infrastructure\nImplement blockchain integrations - including node connectivity, transaction submission, on-chain event monitoring, and wallet interactions - using enterprise Java and Web3 libraries\nWrite, test, and deploy smart contracts in Solidity or equivalent languages, following established security and quality standards\nBuild and maintain APIs and microservices that expose blockchain functionality to upstream platform consumers and business applications\nImplement asynchronous and event-driven processing to manage transaction lifecycle, on-chain state changes, and blockchain data synchronization\nParticipate actively in code reviews, contributing constructive feedback and maintaining high standards of code quality, readability, and test coverage\nCollaborate with architects, senior engineers, and product teams to understand requirements and translate them into well-structured, maintainable software solutions\nContribute to technical documentation including component design notes, API specifications, and integration guides\nSupport debugging, troubleshooting, and resolution of issues across the blockchain software stack in development and production environments\nFollow and contribute to engineering best practices, coding standards, and Agile delivery processes within the team\nStay informed of developments in the blockchain and Web3 ecosystem, including protocol updates, new tooling, and emerging standards relevant to the platform\nParticipate in sprint ceremonies - planning, stand-ups, reviews, and retrospectives - as part of an Agile/Scrum delivery team\nQualifications/ Experience\nBachelor’s degree in CS or Engineering; MS or PhD in computer science, or related discipline a plus\nExtensive experience in full software development and testing lifecycle. Experience from financial services industry is a plus.\nProven experience and expertise with Backend web development with Java spring\nSolid experience in web3 application development is a plus\nSolid experience and expertise developing web applications using asynchronous programming and communication\nExperience and expertise developing web applications adhering to best practices and patterns for reliability, scalability, and performance\nFamiliarity with web3 libraries like Web3J and Web3JS is a plus\nFamiliarity with common and best practices for web3 applications is a plus\nFamiliarity of Solidity code and best practices is a plus\nFamiliarity of basics of DevOps and containerize applications is a plus\nFamiliarity of Agile Methodology and Scrum is a plus\nCompetencies / Skills\nBlockchain Development Proficiency: Practical, hands-on ability to develop software that interacts with blockchain networks - from smart contract deployment to on-chain/off-chain data integration\nStrong Software Engineering Fundamentals: Solid command of data structures, algorithms, design patterns, and software development best practices, with the ability to write clean, testable, and maintainable code\nSecurity Awareness: Understanding of common smart contract vulnerabilities and secure coding practices relevant to on-chain deployments in a regulated environment\nCollaborative Team Player: Works effectively within a distributed, cross-functional team; communicates clearly and proactively with peers, leads, and stakeholders\nAttention to Detail: Rigorous and methodical approach to testing, code quality, and documentation - especially critical given the immutable nature of blockchain deployments\nCuriosity & Learning Agility: Genuine interest in blockchain and Web3 technologies, with the drive to continuously learn and apply new tools, protocols, and patterns\nDelivery Commitment: Reliable and accountable in managing personal workstreams, meeting sprint commitments, and producing quality output within agreed timelines\nTooling Familiarity: Working knowledge of standard engineering tools including Git, Jira, Jenkins, Docker, Hardhat/Foundry, and relevant observability platforms\nDevelopment Value\nAs a Blockchain Software Developer on the Citi Integrated Digital Assets Platform, you will:\nGain hands-on experience building production-grade blockchain software at the scale and complexity of one of the world's largest financial institutions\nDevelop deep expertise across both blockchain-native and enterprise software engineering disciplines, positioning yourself as a highly versatile and sought-after technologist\nWork on meaningful, real-world use cases in institutional digital finance - including tokenized assets, digital cash, programmable settlement, and on-chain financial infrastructure\nCollaborate with and learn from experienced engineers, architects, and domain experts who are at the cutting edge of digital asset technology\nAccess continuous learning and development opportunities, including exposure to emerging blockchain protocols, internal innovation initiatives, and cross-functional technology programs\nBuild a strong professional network across Citi's global technology and business community, with growing visibility as you develop your career within the firm\nDevelopment Value:\nYou will gain significant experience of the technologies and businesses and engineering groups across Citi, giving you exposure to new and existing methodologies and systems as well as the opportunity to work with multiple teams around the globe. As a member of the Citi Integrated Digital Assets Platform engineering team, you will have to opportunity to work with a team of highly motivated, T-shaped, smart individuals who think out of the box and look for disruptive opportunities for commercial benefit.\nExposure to newly released and upcoming technologies and the ability to positively contribute to the strategies of the business. By working within the senior leadership team you will be highly visible across Citi and will have access to Citi’s executive management team.\nThis job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.\nWhat we’ll provide you\nBy joining Citi London, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:\n27 days annual leave (plus bank holidays)\nA discretional annual performance related bonus\nPrivate Medical Care & Life Insurance\nEmployee Assistance Program\nPension Plan\nPaid Parental Leave\nSpecial discounts for employees, family, and friends\nAccess to an array of learning and development resources\nVisit our Global Benefits page to learn more.\nAlongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.\n------------------------------------------------------\nJob Family Group:\nTechnology------------------------------------------------------\nJob Family:\nApplications Development------------------------------------------------------\nTime Type:\nFull time------------------------------------------------------\nMost Relevant Skills\nPlease see the requirements listed above.------------------------------------------------------\nOther Relevant Skills\nFor complementary skills, please see above and/or contact the recruiter.------------------------------------------------------\nCiti is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.\nIf you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.\nView Citi’s EEO Policy Statement and the Know Your Rights poster.","description_format":"text","description_chars":9432,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Annual leave","Continuous learning","Hybrid work","Life insurance","Parental leave"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Blockchain & Crypto","Wealth Management & Financial Advisors","Cryptocurrencies","Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-08-31T07:49:08Z"},{"event":"close","at":"2026-08-31T13:49:12Z"},{"event":"restore","at":"2026-09-15T04:31:36Z"}],"visa":[],"liveness":{"score":7,"band":"cold","label":"Long shot","p_open":1,"p_active":0.261,"p_room":0.28,"age_days":73,"expected_fill_days":10,"reasons":["conf:2","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/citi-lead-web3-engineer-digital-assets-platform","json_url":"https://alion.io/job/citi-lead-web3-engineer-digital-assets-platform.json","meta":{"generated_at":"2026-10-15T12:44:56Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":19729,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":7841},"rest":"https://alion.io/mcp/rest/get_company?id=7841"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fciti-lead-web3-engineer-digital-assets-platform"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fciti-lead-web3-engineer-digital-assets-platform"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fciti-lead-web3-engineer-digital-assets-platform"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/citi-lead-web3-engineer-digital-assets-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fciti-lead-web3-engineer-digital-assets-platform"}]}