Oracle Data Integrator Jobs in Ontario (NOW HIRING)

Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management.

As a bank with a brain and a soul, Citi creates economic value that is systemically responsible and in our clients’ best interests. As a financial institution that touches every region of the world and every sector that shapes your daily life, our Enterprise Operations & Technology teams are charged with a mission that rivals any large tech company. Our technology solutions are the foundations of everything we do from keeping the bank safe, managing global resources, and providing the technical tools our workers need to be successful to designing our digital architecture and ensuring our platforms provide a first-class customer experience. We reimagine client and partner experiences to deliver excellence through secure, reliable, and efficient services.

Our commitment to diversity includes a workforce that represents the clients we serve from all walks of life, backgrounds, and origins. We foster an environment where the best people want to work. We value and demand respect for others, promote individuals based on merit, and ensure opportunities for personal development are widely available to all. Ideal candidates are innovators with well-rounded backgrounds who bring their authentic selves to work and complement our culture of delivering results with pride. If you are a problem solver who seeks passion in your work, come join us. We’ll enable growth and progress together.

Position Overview

Citi is looking for a Senior Application Database Administrator to take ownership of mission-critical Oracle database environments supporting live market data operations within the Markets business unit. In this role, you will design, develop, tune, and sustain high-availability Oracle databases that financial stakeholders depend on daily for time-sensitive, high-value functions. Your work will directly shape the stability, performance, and long-term technical direction of one of Citi's most data-intensive platforms.

• Design, develop, and optimize Oracle database schemas and data models across non-production and production environments to ensure continuous high availability and peak performance for market-critical applications.

• Monitor database health proactively using AWR reports and advisory tools, diagnosing and resolving issues before they impact business operations.

• Lead database performance tuning efforts across large-scale Oracle environments, applying advanced troubleshooting techniques to resolve complex and time-sensitive problems.

• Architect and implement data management strategies covering migration, masking, archival, and capacity planning to support evolving application and business requirements.

• Coordinate across application development, DBA, and Oracle vendor teams to deliver timely resolution of critical or previously unseen database issues.

• Evaluate and introduce new Oracle features, tools, and technologies to continuously improve database stability, scalability, and operational efficiency.

• Define and enforce database standards and best practices, providing technical advisory to engineering and delivery teams across the organization.

• Assess and mitigate database-related risks by identifying, prioritizing, and implementing controls in alignment with release and environment management processes.

• 6 or more years of hands-on experience in database development, design, data modelling, performance tuning, and troubleshooting across large-scale applications.

• 5 or more years of deep, applied experience with Oracle databases, including schema design, query optimization, and environment management in enterprise-grade production systems.

• Demonstrated ability to manage and implement successful technology projects, balancing functional and non-functional requirements across delivery lifecycles.

• Practical experience with Oracle GoldenGate for data replication and real-time data integration across distributed environments.

• Working knowledge of Unix and shell scripting to support database automation, environment management, and operational tasks.

• Experience with Agile and Scrum delivery frameworks and familiarity with CI/CD tooling including Jenkins, Bitbucket, Jira, and deployment automation platforms.

• Bachelor's degree in a relevant field or equivalent professional experience.

• Exposure to modern data technologies including microservices architecture, big data platforms, Hadoop, and cloud storage solutions such as AWS S3.

• Familiarity with AI-assisted tooling and techniques applied within data engineering or database management contexts.

• Experience providing cross-team technical advisory, including engagement with external vendors and platform teams to define standards and drive resolution of complex issues.

• Master's degree in Computer Science, Information Systems, or a related discipline.

Joining Citi means taking on a high-impact role within a global financial institution where your technical decisions carry real weight. You will work alongside experienced engineering and data professionals on systems that serve critical business functions at scale, with access to the tools, resources, and leadership exposure needed to advance your career.

• Hybrid working model with 3 days in the office and 2 days working remotely, giving you flexibility alongside meaningful in-person collaboration.

• Ownership of technically challenging problems within a high-availability, mission-critical environment that directly supports global market operations.

• Access to continuous learning and development resources to deepen your Oracle expertise and expand into emerging technologies such as cloud and AI tooling.

• Exposure to strategic technology decisions at the intersection of data infrastructure and financial markets, with influence beyond your immediate team.

• Competitive financial wellbeing support and a comprehensive benefits package reflecting the seniority and impact of this role.

• A performance-driven team culture where technical excellence, accountability, and delivery ownership are recognized and rewarded.

Build the database foundation that keeps Citi's Markets technology running at its best — apply today and bring your Oracle expertise to a role where precision and performance genuinely matter.

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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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This job opening is for an existing job vacancy.

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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.