Application Systems Developer Jobs in Ontario (NOW HIRING)

The Java Technology Developer is a senior-level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead application systems analysis and programming activities while delivering and supporting businesscritical Credit Risk and Capital Markets platforms. This role requires deep technical expertise combined with strong domain knowledge in Capital Markets, Derivatives, and Risk Management.

What you will be doing: Deliver advanced technology initiatives as a senior individual contributor, providing expertise across the full software development lifecycle-from concept and design through development, testing, and deployment. Lead the design, development, and modernization of businesscritical Credit Risk systems, ensuring resilience, scalability, and regulatory compliance. Provide technical leadership on largescale initiatives, including reengineering complex, franchisecritical, monolithic applications into modern, cloudnative microservices architectures.

Act as a technical advisor and coach to midlevel and junior developers, strengthening engineering standards and overall team capability. Partner closely with a global team of software engineers, business analysts, DevOps, and support teams to deliver highquality solutions across Capital Markets and Risk domains. Contribute to architectural decisions and guide platform modernization efforts involving new technologies and cloud migration.

Ensure applications meet enterprise risk, performance, security, and availability standards. What you will bring to the role: Technical Skills Strong Core Java experience developing robust, scalable, and maintainable applications using ObjectOriented Design principles. Handson experience with concurrent and multithreaded programming.

Experience working in Agile development environments with a strong emphasis on TestDriven Development (TDD). Deep understanding of Java internals, including class loading, JVM memory management, and performance tuning. Experience with distributed caching frameworks such as GridGain, Oracle Coherence, Redis, or equivalent technologies.

Database expertise with RDBMS (preferably Oracle) and NoSQL technologies (preferably MongoDB). Practical experience reengineering large monolithic applications into microservices architectures. Strong cloud computing experience, including containers and orchestration technologies such as Docker and Kubernetes.

Handson experience with distributed systems and data processing technologies such as Flink and cloudbased platforms handling large datasets. Familiarity with Linux/Unix environments, including scripting capabilities. SDLC and DevOps tools experience including Git/BitBucket, CI/CD frameworks (Jenkins, SonarQube), JIRA, and secure coding toolkits.

Experience leveraging AIassisted development tools such as GitHub Copilot or Devin. Strong understanding of building and supporting highly resilient, lowlatency, enterprisescale systems. Domain Knowledge Proven experience working in the Capital Markets domain.

Strong understanding of Derivatives, Credit Risk, and Risk Management concepts. Experience developing and supporting businesscritical, risksensitive platforms. Competencies Excellent written and verbal communication skills in English.

Ability to collaborate effectively across large, globally distributed teams and influence key architectural and strategic decisions. Strong problemsolving skills with the ability to manage multiple priorities under pressure. Highly motivated selfstarter with a passion for continuous learning and improvement.

Proven experience mentoring and developing junior team members to deliver highquality, productiongrade solutions. Qualifications 6+ years of relevant experience in application development or systems analysis. Extensive handson experience in system analysis, design, and software engineering.

Demonstrated success in managing and delivering largescale, complex technology initiatives. Recognized Subject Matter Expert (SME) in at least one area of application development. Ability to rapidly adjust priorities in response to changing business and regulatory needs.

Strong leadership, ownership, and project management capabilities. Consistent demonstration of clear, concise written and verbal communication. Education Bachelor's or Master's degree in Computer Science, Engineering, or a related STEM discipline, or equivalent practical experience in a similar role.

This job description provides a highlevel overview of the types of work performed. Other jobrelated duties may be assigned as required. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Primary Location Full Time Salary Range: $120,800.00 - $170,800.00 ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above

------------------------------------------------------ Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ 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. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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