Senior Full Stack Developer Job at Citi (Mississauga)

Senior Full Stack Developer

Citi

Location:
Canada , Mississauga

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

120800.00 - 170800.00 USD / Year

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Job Description:

We are seeking a talented and passionate individual to join our Full-Stack development team. This role offers a unique opportunity to significantly impact the global client onboarding experience by building the future of our platform. The successful candidate will gain valuable exposure to a large-scale, modern technology platform with global reach, playing a crucial role in shaping how we serve our clients. The Application Development Technology Lead 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 applications systems analysis and programming activities to expand and modernize the OMC technology platform. You will be responsible for driving technical excellence, mentoring junior developers, and ensuring the delivery of high-quality, scalable, and resilient software solutions that support Citi's global business operations.

Job Responsibility:

Lead the technical design, architecture, and development of complex applications, ensuring adherence to best practices, coding standards, and architectural patterns
Guide and mentor a team of developers, fostering a collaborative and high-performing environment
Effectively communicate technical concepts and project status to both technical and non-technical stakeholders
Develop common, reusable components and services
Design and develop high-performance, low-latency applications within existing Citi frameworks
Ensure the reliability, scalability, and performance of developed components
Adopt an engineering mindset, thoroughly understanding use-cases, estimating volume and compute velocity requirements
Actively contribute to system design and architectural decisions
Evaluate new strategic initiatives through Proof-of-Concepts (POCs) and transition successful concepts into robust, industrial-grade solutions
Provide post-release support to business, development, and support teams
Develop applications adhering to best practices, including Test-Driven Development (TDD), high unit test coverage, and Continuous Integration (CI)

Requirements:

6+ years of hands-on Java development experience, including Spring, real-time messaging, and associated Java frameworks
Proven experience developing and maintaining highly scalable, real-time microservices and RESTful APIs
Proficiency in ReactJS and core front-end technologies: HTML5, CSS3, JavaScript (ES6+), Redux
Experience with real-time messaging middleware (e.g., Kafka, RabbitMQ, Solace, Tibco)
Hands-on experience with database technologies, including RDBMS (e.g., Oracle) and NoSQL (e.g., MongoDB)
Strong fundamentals in software development, data structures, design patterns, Object-Oriented Programming (OOP), architecture, algorithms, and problem-solving
Bachelor’s degree/University degree or equivalent experience

Nice to have:

Experience with in-memory datastore/cache libraries (e.g., Redis, Apache Ignite, Gemfire)
Exposure to Kotlin
Experience with system performance tuning and low-latency Java programming
Experience working with multi-threaded applications
Experience with CI/CD pipelines
Test-driven development, including Unit and End-to-End Testing

Additional Information:

Job Posted:
March 01, 2026

Employment Type:

Fulltime

Work Type:

Hybrid work

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