Senior Java Developer, Citi

Citi

Location:
Canada, Mississauga

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

Not provided

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Job Description:

Citi is seeking a Senior Java Developer to build and support banking applications, focusing on 100% digitalization and automation. The role involves backend development with Java, microservices, and distributed systems, working in a hybrid setting in Mississauga, Canada.

Job Responsibility:

Building and supporting the banking applications
Analyze and solve problems in distributed environments
Designing and developing highly concurrent systems
Integrating APIs with third-party libraries/vendors with secure protocols
Debugging and monitoring distributed systems for reliability and performance

Requirements:

Strong hands-on core Java, functional programming, and Spring Boot microservices development experience
Understanding of concurrent and parallel programming, including threads, processes, synchronization, and handling race conditions
Knowledge of reactive programming for building asynchronous, event/message-driven systems in microservices based applications that are highly concurrent
Proficient in containerizing applications, continuous integration, and continuous delivery in Java ecosystem
Knowledge of distributed tracing and API Gateway integration for microservices architecture
Proficient in functional programming concepts with Streams API, Lambda Expressions and Optional
Understanding of secure coding practices, SSL/TLS, OAuth, and JWT token handling in Java-based applications
Expertise in integrating Java with NoSQL databases such as MongoDB for scalable, high availability applications
Strong experience in data modeling and experience with relational and no-SQL database, Oracle and MongoDB
Understanding of integrating APIs with third party libraries/vendors and handle the security around it
Understanding of the principles of distributed systems, including data partitioning, replication, and consistency models
Strong grasp of data structures and algorithms, especially those relevant to distributed systems like distributed hash tables and load balancing techniques
Understanding of microservices architecture, including service discovery, API gateways, and inter-service communication
Exceptional Problem-Solving and Analytical Skills to diagnose and resolve issues in distributed environments
Above average skills in monitoring, logging, and debugging distributed systems to ensure reliability and performance
Expertise in fundamental concepts such as consistency, availability, partition tolerance, fault tolerance, and scalability
Familiarity with container orchestration (e.g., Kubernetes), and distributed messaging systems (e.g., Kafka)
Experience using Git/BitBucket
Good communication skills, both written and verbal

Nice to have:

Unix shell scripting
Knowledge of ElasticSearch, and GraphQL
Experience with building apps which are highly performant and scalable
Knowledge of Generating Artificial Intelligence (AI), Machine Learning (ML), and Large Language Models (LLMs)

What we offer:

Global benefits for well-being
growth opportunities
work-life balance benefits

Additional Information:

Job Posted:
September 05, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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Senior Java Developer