We are seeking a talented and passionate Core Java Developer to join our Rates eTrading team, which is responsible for Citi’s market-leading electronic connectivity and distribution platform. In this role, you will design and develop our next-generation, high-profile trading applications, working closely with traders, sales, and quants. This is a challenging and exciting opportunity to enhance a critical front-office platform, gain direct exposure to the fast-paced world of finance, and contribute to the technology that solidifies our competitive advantage in the market.

Design and develop front-office eTrading applications for the trading business. Collaborate directly with Traders, Sales, and Quants to shape the future direction of the trading platform. Utilize creativity and innovation to improve the technical capabilities of the platform.

Ensure the platform remains stable, flexible, and maintainable. Enhance automated testing efforts and optimize the UAT process. Troubleshoot complex performance and scalability issues. Assist in third-line support during core trading hours.

Liaise with global business, support, and development teams on various projects. Possess 3-7 years of experience in server-side Core Java and multi-threading. Demonstrate experience with the Spring framework, Linux, and relational databases.

Have a solid architectural understanding of enterprise applications. Show experience with modern software development practices such as Agile, test-driven development, continuous integration, and continuous delivery. Understand computer science fundamentals, including concurrency, algorithms, data structures, and design patterns.





Experience developing large-scale financial trading systems with a focus on performance optimization and tuning.

Experience working in an Agile, globally distributed team using tools such as Jira, GitHub, Sonar, and TeamCity.

Experience with ION, KDB, JSON/XML, and REST services is preferred.

Experience with AI tools such as Copilot, Claude, or Devin is preferred. Knowledge of major Fixed Income Products (Repos, US Treasuries, Interest Rate Swaps) and Broker/Customer Markets electronic trading flows. Bachelor’s degree/University degree or equivalent experience Master’s degree preferred Excellent planning and organizational skills Flexible and able to deliver quality results in the required timeframe Ability to inspire and raise the level of his/her colleagues from a technical perspective.

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Citi is an equal chance 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.

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. View Citi’s EEO Policy Statement and the Know Your Rights poster. #

📌 eTrading Java Developer, Front Office Trading (Mississauga)
🏢 Citi
📍 Mississauga