{"id":3718943,"url":"https://alion.io/job/citi-senior-frontend-developer","title":"Senior Frontend Developer","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":98,"open_postings":557,"ghost_share":0.009,"stale_share":0.206,"repost_share":0.068,"time_to_fill_p50_days":9,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Frontend","role_family":"Frontend","seniority":"senior","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":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":true},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true},{"name":"Redux","optional":true},{"name":"RxJS","optional":true},{"name":"State Management","optional":true},{"name":"TypeScript","optional":true},{"name":"Vue.js","optional":true},{"name":"WebSockets","optional":true},{"name":"Zustand","optional":true}],"status":"live","first_seen_at":"2026-11-03T00:00:00Z","employer_posted_date":"2026-11-03","last_verified_at":"2026-11-07T07:39:01Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Job Overview\nEngineer the future of global finance. At Citi, our Tech team doesn’t just support finance - we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.\nThe Fixed Income eTrading team delivers eTrading strategy & provides market connectivity, price distribution, order management, RFQ management, Algo trading capability for Rates Products business. This role is for an individual who will leverage his/her skills to deliver solutions related to electronic trading implementations with key architectural and design decisions in the build out of global eTrading and Algo platform.\nThe UI Application Senior Developer is responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology and product teams. The overall objective of this role is to lead applications systems analysis and programming activities. The candidate will have the opportunity to work in a fast-paced environment dedicated to delivering business value and to enhancing our competitive edge.\n Responsibilities:\nDesign and develop modern, high-performance UI applications for eTrading and Algo platforms, including real-time data visualization (e.g., live pricing, order books, trade blotters)\nUtilize in-depth knowledge across multiple Applications Development areas to provide technical oversight across systems and applications\nFollow application development life cycle best practices and drive engineering excellence\nBalance time-to-market (client delivery) with proper governance, compliance, and audit mandates\nKnowledge and Experience:\nProven experience designing, building, testing, maintaining, and supporting large-scale, high-performant UI applications using modern frontend technologies\nStrong experience handling real-time/streaming data in the UI layer (e.g., high-frequency price updates, live order status) with attention to performance and low latency\nDemonstrated ability to learn new business concepts and technologies quickly and thoroughly\nExperience following good development standards and practices\nElectronic trading (eTrading) experience is a plus but not required\nFinancial industry experience and knowledge of Rates Products (Bonds, Swaps, Futures) is a plus\nQualifications:\nStrong hands-on experience with modern UI frameworks (React, Angular, or Vue)\nSolid understanding of real-time communication channels (WebSockets, HTTP streaming, SSE)\nUnderstanding of reactive programming paradigms (e.g., RxJS) and state management libraries (Redux, Zustand)\nStrong experience in distributed applications and architecture\nExpertise in design, development, performance tuning, and troubleshooting of UI applications\nFamiliarity implementing styles based on UX designs\nTeam player with excellent interpersonal, communication, and problem-solving skills\nInnovator - drives adoption of new approaches, solutions, and tools\nEducation:\nBachelor's degree/University degree or equivalent experience\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":4579,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Continuous learning","Hybrid work"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cards & Card Issuing","Wealth Management & Financial Advisors","Payment Processing & Gateways","Investment Banking & M&A Advisory"],"lifecycle":[{"event":"open","at":"2026-11-04T01:56:25Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Graduate Trainee, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; 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