Senior Java Backend Architect - Data Pipelines (Hybrid)

Citi; Mississauga; Hybrid; CAD 94,000 - 142,000; Full time

Benefits offered by this job

Hybrid work model

Learning & development opportunities

Collaboration with global teams

Wellbeing resources

Competitive compensation

Job summary

Citi in Mississauga, Canada seeks a Senior Java Backend Developer to design and build high-performance backend services for large-scale data processing. You will apply Java 17, Spring Boot, and microservices patterns to deliver scalable architectures while collaborating with cross-functional teams.

The role emphasizes test-driven development, code quality with SonarQube, and efficient data joins in complex pipelines. A Bachelor’s degree and strong communication are required.

Qualifications

• 5+ years of hands-on Java backend development with Java 17+.
• Strong Spring Framework experience (Boot/Data/Cloud).
• SQL/NoSQL databases; optimize queries and data models.
• In-memory data loading and efficient joins for large pipelines.
• Java tooling: Maven/Gradle; testing with JUnit/Mockito.
• Architectural skills in microservices and event-driven designs; TDD and SonarQube.

Responsibilities

• Design and build high-performance Java backend services for data processing.
• Develop scalable data processing architectures using modern patterns.
• Collaborate with cross-functional teams to deliver features.
• Maintain performance and resolve bottlenecks in backend apps.
• Practice test-driven development to improve testability and modularity.
• Apply static code analysis with SonarQube to ensure quality.
• Optimize SQL queries and manage complex data pipelines.
• Leverage AI-assisted tools to accelerate delivery and quality.

Skills

Java backend

Java 17+

Spring Boot

SQL/NoSQL databases

Maven/Gradle

JUnit/Mockito

Microservices

Event-driven

Communication skills

Education

Bachelor's degree

Tools

SonarQube

Job description

Citi in Mississauga, Canada seeks a Senior Java Backend Developer to design and build high-performance backend services for large-scale data processing. You will apply Java 17, Spring Boot, and microservices patterns to deliver scalable architectures while collaborating with cross-functional teams.

The role emphasizes test-driven development, code quality with SonarQube, and efficient data joins in complex pipelines. A Bachelor’s degree and strong communication are required.