**Job Description** **Citi ICG Technology organization is looking for an Order Management System (OMS) Senior Java Developer for North America region. The position is located in Mississauga, ON, Canada.** **The OMS will support both sales and trading workflows across key products traded in equities: cash, programs, listed derivatives (options, futures, etc.), delta one (single stock and index swaps), ETF, convertible bonds, vanilla OTC products, and FX.** **At the beginning stages of the program the successful candidate will focus on Cash trading flows with the goal to deliver a single global codebase for several Sales and Trading Desks.** **Key responsibilities of the person in this role will include:** **Work with Cash trading businesses to understand key functional and non-functional requirements.** **Collaborate with the other members of OMS leadership team to extend the existing low latency service-oriented architecture to “high touch” OMS use cases for Program Trading and D1 desks.** **Integrate the OMS with the strategic services to manage limits, controls, entitlements, sales & trading coverage.** **Be instrumental in the design and implementation of integrated automated testing system.** **Build integrated instrumentation and support tools.** **Deliver the new consolidated OMS and retire the legacy technology stack.** **The successful candidate will have the following skills and experience:** **Strong knowledge of Java, Pub/Sub middleware, and databases.** **Experience with Agile development methodologies.** **Good written and oral communication skills** **Good understanding of Equities Single-Stock / Delta One/ ETF/ Program Trading business.** **Experience with Building controls for automated trading.** **Strong knowledge of FIX protocol as applied to trading and RFQ.** **Experience with software monitoring tools and instrumentation.** **Expert level engineer in software development with at least 10 years of server side development experience.** **Undergraduate or graduate degree in computer science, engineering, or other relevant field and solid understanding of computer science fundamentals (date structures, algorithms, design patterns, etc.)** ------------------------------------------------------ **Job Family Group:** Technology ------------------------------------------------------ **Job Family:** Applications Development ------------------------------------------------------ **Time Type:** Full time ------------------------------------------------------ Citi is an equal opportunity and affirmative action employer. Qualified applicants will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Citigroup Inc. and its subsidiaries ("Citi”) invite all qualified interested applicants to apply for career opportunities. If 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 (https://www.citigroup.com/citi/accessibility/application-accessibility.htm)** . View the "EEO is the Law (https://www.dol.gov/sites/dolgov/files/ofccp/regs/compliance/posters/pdf/eeopost.pdf) " poster. View the EEO is the Law Supplement (https://www.dol.gov/sites/dolgov/files/ofccp/regs/compliance/posters/pdf/OFCCP\_EEO\_Supplement\_Final\_JRF\_QA\_508c.pdf) . View the EEO Policy Statement (http://citi.com/citi/diversity/assets/pdf/eeo\_aa\_policy.pdf) . View the Pay Transparency Posting (https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp\_%20English\_formattedESQA508c.pdf) Citi is an equal opportunity and affirmative action employer. Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.