We are seeking a highly skilled and experienced Senior Application Developer to join our dynamic Rates Technology team. This position is responsible for the design, development, and implementation of new and revised application systems and programs. The candidate will perform in-depth application systems analysis and programming, collaborating closely with various technology and business teams globally to deliver robust and efficient software solutions.

The primary objective of this role is to drive innovation and technical excellence within our trading application landscape.

Role Overview and Key ResponsibilitiesAs a Senior Application Developer, you will be at the forefront of our technology initiatives, contributing directly to the systems that support our Rates trading business. Your primary duties will involve a combination of hands‑on UI development, system design.A key part of your role will be to translate these complex business needs into intuitive, efficient, and user‑centric UI designs.

UI Development: You will be responsible designing scalable Web UI architecture, writing high‑quality code, and conducting comprehensive testing to ensure functionality meets business specifications.

Process Improvement: You will actively contribute to the continual improvement of our software development lifecycle (SDLC). This involves refining development methodologies, enhancing code quality standards, and adopting best practices to increase efficiency and product reliability.

Project Delivery: Leveraging your hands‑on development skills and deep technical expertise, you will play a crucial role in delivering large‑scale, complex technology projects from conception through to deployment.

Production Support: You will serve as a third‑line support contact for the production system, handling escalated issues that require deep technical analysis.



This role is supported by dedicated 24‑7 first and second‑line support teams who manage initial incident response.

Technical Analysis: Meticulously review and analyze proposed technical solutions for new and existing projects to ensure they are robust, scalable, and aligned with architectural standards. Develop a comprehensive knowledge of how different areas of the business integrate and function to accomplish strategic goals, ensuring that technology solutions enhance these processes.

Innovation: Actively impact the future of Applications Development by identifying opportunities for innovation, researching emerging trends, and adapting cutting‑edge technologies to deliver best‑in‑class software solutions. Risk and Compliance Management Appropriately assess risk when making business and technical decisions, giving particular consideration to the firm’s reputation and the safeguarding of Citigroup, its clients, and its assets. Drive compliance with all applicable laws, rules, and regulations by adhering to company policies and applying sound ethical judgment in all personal and business conduct.

Proactively elevate, manage, and report control issues with complete transparency. A minimum of 6+ years of in‑depth professional development experience, with a dominant focus on building sophisticated client‑side applications. Extensive, hands‑on experience in modern client‑side development, including expert‑level proficiency in Angular/ReactJS,/JavaScript, HTML5, ES6+, TypeScript,



and reactive programming paradigms (e.g., API and Data Integration: Proven experience with high‑throughput, low‑latency systems, including the design and integration of streaming data feeds and RESTful APIs.

Extensive practical experience with a range of essential back‑end and middleware technologies, specifically including Kafka, Solace, and MongoDB.

DevOps and Deployment: Demonstrable experience with contemporary CI/CD pipelines and tools, such as Tekton, and container orchestration platforms like OpenShift and Kubernetes. Exposure to and appreciation for software quality techniques such as Test‑Driven Development (TDD) and application performance profiling. Excellent aptitude for analysis and a methodical, effective approach to problem‑solving.

Bachelor’s degree/University degree or equivalent experience Master’s degree preferred Full time Primary Location Full Time Salary Range $Automated Processing and AI 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 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.

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. #

📌 Senior UI Developer -Vice President (Mississauga)
🏢 Citi
📍 Mississauga