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Optimize backend query performance where the data layer meets product code - read-replica routing, indexing, caching, and IO instrumentation in our Java/Spring services.
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Senior Full Stack Java Developer
Citi
Mississauga, ON
- Full-time
Citi is looking for a Senior Full Stack Developer to join the Oracle Ledger Program, where you will build and maintain the common services and user interfaces that underpin critical…
Added 1 day ago
Senior Platform Engineer, AI & Fabrics
BMO
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Strong programming skills (Python and/or Go preferred; TypeScript/Java an asset) for building services, APIs, and integrations.
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Full Stack Software Developer
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Programming experience in one or more relevant languages such as: Python Java JavaScript or TypeScript
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Senior Platform Engineer, AI & Fabrics
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Toronto, ON
- Part-time
Strong programming skills (Python and/or Go preferred; TypeScript/Java an asset) for building services, APIs, and integrations.
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Staff Back End Engineer (Applications)
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Deep expertise in at least one production-grade backend language (e.g., Python, Java, Kotlin, Go, C#, etc.).
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Citi

Senior Full Stack Java Developer

Mississauga, ON, Canada

$94,300.00 - $141,500.00 · Full-time

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Job details

Pay: $94,300.00 - $141,500.00
Job type: Full-time
Experience: 4+ years of relevant experience
Posting language: English
Posted: Oct 5, 2026

Original job description

Citi is looking for a Senior Full Stack Developer to join the Oracle Ledger Program, where you will build and maintain the common services and user interfaces that underpin critical financial systems across the organization. In this role, you will work with a high-performing technology team to develop full stack applications, drive technical solutions end-to-end, and provide expert-level support across a global delivery model. This is an opportunity to apply your engineering expertise to systems that directly support Citi's financial infrastructure at scale.

Responsibilities

Design, develop, and maintain full stack applications for the Oracle Ledger Program, building both frontend interfaces and backend services to meet evolving business requirements.
Build and enhance common services and user interfaces using Java, Angular or React, and REST APIs, ensuring high-quality, scalable, and maintainable code.
Lead the full development lifecycle across analysis, design, construction, testing, and implementation to deliver reliable software on schedule.
Provide L3 technical support as part of an around-the-sun global support model, diagnosing and resolving complex application issues with minimal disruption.
Collaborate with business users and cross-functional technology teams to translate requirements into practical technical solutions and recommend the most effective engineering approaches.
Develop and implement automated test coverage using Selenium to validate functionality and protect system integrity across releases.
Define and uphold engineering standards and best practices, contributing to a consistent and maintainable codebase across the team.
Act as a subject matter expert for senior stakeholders and teammates, providing technical guidance and mentoring less experienced developers.

Required Qualifications & Skills

Experience in software development, with a strong focus on full stack engineering across enterprise applications.
Proficiency in Java for backend development, with demonstrated experience building and consuming REST APIs in production environments.
Hands-on experience with Angular or React for building responsive, user-facing web interfaces.
Practical experience with Selenium for automated testing, including writing and maintaining test suites that support continuous delivery.
Proven ability to manage and deliver software projects end-to-end, including planning, prioritization, and delivery under deadline pressure.
Experience providing advanced application support, including root cause analysis and resolution of complex production issues.
Bachelor's degree in a relevant field or equivalent professional experience.

Beneficial Skills & Qualifications

Familiarity with Python for scripting, automation, or data processing tasks within an enterprise application context.
Exposure to Oracle financial systems or ledger-based platforms, providing useful context for the business domain.
Experience working within global or follow-the-sun support and delivery models across distributed teams.

Recommended Qualifications:

4+ years of relevant experience
Experience in systems analysis and programming of software applications
Experience in managing and implementing successful projects
Working knowledge of consulting/project management techniques/methods
Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements

Education:

Bachelor’s degree/University degree or equivalent experience

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

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Job Family Group:

Technology

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Job Family:

Applications Development

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Time Type:

Full time

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Primary Location Full Time Salary Range:

$94,300.00 - $141,500.00

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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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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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.

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More about this job

Responsibilities

Design, develop, and maintain full stack applications for the Oracle Ledger Program using Java, Angular, or React. Provide L3 technical support and collaborate with cross-functional teams to deliver scalable financial infrastructure solutions.

Requirements

Requires a bachelor's degree and 4+ years of experience in software development with proficiency in Java and frontend frameworks. Candidates must demonstrate strong skills in REST APIs, automated testing with Selenium, and the ability to manage projects end-to-end.

Skills

Java
Angular
React
REST APIs
Selenium
Full stack development
Software engineering
Oracle Ledger
Technical support
Root cause analysis
Automated testing
System design
Project management
Python
Financial systems

Visa sponsorship

Not detected in the job text

Keywords

Java
Angular
React
REST APIs
Selenium
Full stack
Oracle Ledger
Financial systems
Software development
L3 support
Python
Automation
Systems analysis
Project management
Enterprise applications
Continuous delivery
Root cause analysis
Technical guidance
Mentoring
Engineering standards

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