
Senior Java Developer
- Job Req Id:
- 25905478
- Location(s):
- Mississauga, Ontario, Canada
- Job Type:
- Hybrid
- Posted:
- Sep. 05, 2025
Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.
Job Overview
Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Our mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. We strive to earn and maintain our clients’ and the public’s trust by constantly adhering to the highest ethical standards and making a positive impact on the communities we serve. This job opening will help Citi to build sophisticated solutions that will be targeting 100% digitalization and automation of the applications.
Overview of the Role:
Responsibilities of this role is building and supporting the banking applications. As a Senior Java Developer, the candidate is expected to have good analytical thinking, problem solving, good programming/technical fundamentals and eagerness to learn new technologies/concepts. The candidate must be open to accepting challenges and suggestions.
Responsibilities:
Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements
Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary
Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.
Qualifications:
6-10 years of relevant experience in Apps Development or systems analysis role
Extensive experience system analysis and in programming of software applications
Experience in managing and implementing successful projects
Subject Matter Expert (SME) in at least one area of Applications Development
Ability to adjust priorities quickly as circumstances dictate
Demonstrated leadership and project management skills
Consistently demonstrates clear and concise written and verbal communication
Backend Development (Required):
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.
Other areas (Required):
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.
Other areas (Good to have):
Unix shell scripting.
Knowledge of ElasticSearch, and GraphQL.
Experience with building apps which are highly performant and scalable will be great.
Knowledge of Generating Artificial Intelligence (AI), Machine Learning (ML), and Large Language Models (LLMs).
Education:
Bachelor’s degree/University degree or equivalent experience
Master’s degree preferred
This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.
------------------------------------------------------
Job Family Group:
Technology------------------------------------------------------
Job Family:
Applications Development------------------------------------------------------
Time Type:
Full time------------------------------------------------------
Primary Location Full Time Salary Range:
$0.00 - $0.00------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
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.

Global Benefits
Discover the top benefits offered to our global workforce, designed to support your well-being, growth and work-life balance. Explore a few of the highlights that make working with us rewarding.

Explore More Jobs
-
VP - Investment Banking - Specialty and Diversified Financials
- New York, New York
-
SOC Digital Forensics and Incident Response (DFIR)
- Irving, Texas
-
SOC Digital Forensic and Incident Response- Senior Vice President
- Irving, Texas
-
Services Business Command Center Major Incident Lead - Vice President
- Irving, Texas
-
Early Careers Talent Network
Sign up to receive personalized job matches based on your skills and interests. We'll help you discover opportunities that align with your goals.
-
Career Professionals Talent Network
Sign up to receive tailored job matches based on your skills and experience. Discover opportunities that align with your ambitions.