{"id":2976335,"url":"https://alion.io/job/citi-junior-trading-tool-developer-emea-credit","title":"Junior Trading Tool Developer - EMEA Credit","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":473,"ghost_share":0.006,"stale_share":0.129,"repost_share":0.078,"time_to_fill_p50_days":10,"computed_at":"2026-10-26T05:57:25Z"}},"role":"DevOps","role_family":"DevOps","seniority":"junior","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":36000,"max_usd":92000,"period":"year","method":"role_seniority_country_cell","sample_n":10},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon S3","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Asyncio","optional":false},{"name":"Boto3","optional":false},{"name":"CI/CD","optional":false},{"name":"FastAPI","optional":false},{"name":"Git","optional":false},{"name":"Linux","optional":false},{"name":"NumPy","optional":false},{"name":"Pandas","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Pytest","optional":false},{"name":"Python","optional":false},{"name":"Redis","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"Streamlit","optional":false},{"name":"Time Series","optional":false},{"name":"Unix","optional":false},{"name":"WebSockets","optional":false},{"name":"Amazon ECS","optional":true},{"name":"Docker","optional":true}],"status":"closed","first_seen_at":"2026-10-20T00:00:00Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-23T05:28:10Z","board_verified":false,"closed_at":"2026-10-23T05:28:10Z","days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"Engineer 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.\nCiti is seeking a highly motivated and curious Junior Trading Tool Developer to join Fixed Income Trading Services, embedded directly within the EMEA Credit Flow Trading desk.\nBased on the trading floor, this role offers an exciting opportunity for direct, daily collaboration with traders, quantitative analysts, and product strategists. As a trading desk tool developer, you will focus on building, enhancing, and maintaining rapid, business-critical applications and services-spanning real-time pricing and risk tools, market data streaming monitors, trade booking automation, and data analytics scripts. Working alongside senior desk developers, you will leverage a modern Python ecosystem-including Streamlit, Redis, SQL databases, Object Storage, REST/WebSocket APIs, and data manipulation libraries-to rapidly prototype and deliver high-impact trading solutions in a fast-paced front-office environment.\nKey Responsibilities\nDesk Tooling & Automation: Assist in building and supporting tactical and strategic desk tools, scripts, analytics dashboards, and automation utilities that directly support trade execution, real-time risk, and P&L workflows.\nDirect Desk Interaction: Work alongside senior developers, traders, and quants to understand day-to-day desk challenges, translating business operational needs into robust, reliable software tools.\n Data & Market Feed Integration: Connect desk tools to internal pricing engines, trade capture systems, relational/time-series databases, and real-time messaging/streaming buses (e.g., Kafka, Solace, WebSockets, or proprietary pub/sub feeds).\nRapid Prototyping & Iteration: Build rapid prototypes and deliver iterative enhancements to solve immediate desk needs while adhering to engineering standards.\n Workflow & Domain Mastery: Actively build a deep foundational understanding of Credit Flow products (bonds, CDS, credit indices), pricing models, and end-to-end trade lifecycles.\n Code Quality & Best Practices: Write clean, modular, and type-annotated Python (Python 3.10+); ensure comprehensive test coverage (pytest); adhere to CI/CD pipelines, and Git workflows.\nMentorship & Learning: Participate actively in code reviews, pair programming, and technical learning sessions under the guidance of senior trading technology leads.\nRisk, Controls & Operational Rigor: Follow robust SDLC practices, change management processes, and ensure tools adhere to operational risk and compliance standards in a regulated trading environment.\nQualifications & Skills\nTechnical Background\nCore Python: Strong programming fundamentals in Python 3.10+ (OOP, type hints, generators, decorators, and concurrency/asyncio).\nData Manipulation: Hands-on proficiency with Pandas and NumPy for time-series and tabular data processing.\nRapid UI & Dashboards: Practical experience building interactive data applications using Streamlit (or similar Python UI frameworks).\nIn-Memory Caching & Messaging: Working knowledge of Redis (caching patterns, data structures, and pub/sub).\nAPIs & Real-Time Communication: Experience creating and consuming REST APIs (e.g., FastAPI) and event-driven data streaming over WebSockets.\nDatabases & Storage:Solid understanding of SQL (joins, window functions, query optimization) across relational databases (PostgreSQL, Oracle, or SQL Server).\nFamiliarity with interacting with Object Storage / Cloud Storage (e.g., S3 APIs, boto3) for dataset and artifact persistence.\n\nTooling & Engineering Standards: Proficient with Git, Linux/Unix command-line tools, and automated testing with pytest.\nNice-to-Have\nExposure to containerization basics (Docker) and familiarity with ECS platforms.\nFamiliarity with leveraging AI coding assistants or agent-based tooling to accelerate frontend development\nInterest in or basic understanding of Fixed Income/Credit financial products (Bonds, CDS, Credit Indices, Swaps).\nWhat we’ll provide you\nBy joining Citi, 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 About Us | Culture, Values & 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":6575,"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":["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":["Cards & Card Issuing","Wealth Management & Financial Advisors","Payment Processing & Gateways","Investment Banking & M&A Advisory"],"lifecycle":[{"event":"open","at":"2026-10-21T04:50:01Z"},{"event":"close","at":"2026-10-23T05:28:10Z"}],"visa":[],"liveness":null,"pay":null,"html_url":"https://alion.io/job/citi-junior-trading-tool-developer-emea-credit","json_url":"https://alion.io/job/citi-junior-trading-tool-developer-emea-credit.json","meta":{"generated_at":"2026-10-26T08:41:32Z","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":11622,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-27T00:00:00Z"}},"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-junior-trading-tool-developer-emea-credit"},{"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-junior-trading-tool-developer-emea-credit"},{"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-junior-trading-tool-developer-emea-credit"},{"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-junior-trading-tool-developer-emea-credit\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fciti-junior-trading-tool-developer-emea-credit"}]}