About the role
Date Posted: 08/05/2026
Hiring Organization: Rose International
Position Number: 505225
Industry: Financial Services
Job Title: Senior Java Backend Developer
Job Location: Mississauga, ON, Canada, L4T 2R4
Work Model: Hybrid
Work Model Details: Onsite 3 days per week.
Shift: Standard shift
Employment Type: Temporary
FT/PT: Full-Time
Estimated Duration (In months): 7
Min Hourly Rate($): 70.00
Max Hourly Rate($): 75.00
Must Have Skills/Attributes: Java, OOPS, Software Development
Experience Desired: Core Java, Java 17, Java 21, JVM Tuning, Multithreading, Concurrency, Garbage Collection, OOP (8 yrs); Strong Spring Boot and Spring ecosystem experience (8 yrs)
C2C is not available
Job Description
Only qualified Senior Java Backend Developer candidates located near the Mississauga, ON area to be considered due to the position requiring an onsite presence
Required Experience
8+ years of professional experience in application development or systems analysis with a strong focus on Java backend development Extensive experience designing and developing scalable, high-performance backend applications Hands-on experience building distributed data processing systems, ETL pipelines, and real-time streaming solutions Strong experience with Spring Framework including Spring Boot, Spring Cloud, Spring Data, Spring Security, Hibernate, and JPA Experience designing and optimizing relational and NoSQL databases Experience with distributed systems, microservices, event-driven architecture, REST APIs, and gRPC Experience with containerization, CI/CD pipelines, and DevOps practices Experience leading technical delivery of complex backend initiatives Experience with Test-Driven Development, unit testing, integration testing, and code reviews
Technical Skills
Core Java 11, 17, or 21 Advanced multithreading and concurrency JVM memory management and garbage collection OOP, SOLID principles, design patterns, data structures, and algorithms Apache Kafka, Apache Spark, Flink, Hadoop ETL, batch processing, stream processing, and messaging systems Spring Boot, Spring Cloud, Spring Data, Spring Security Hibernate and JPA SQL, PostgreSQL, Oracle NoSQL databases including MongoDB, Cassandra, and Redis Docker and Kubernetes Jenkins, GitHub Actions, or GitLab CI REST APIs and gRPC Linux and shell scripting Cloud platforms including AWS, Azure, or GCP
Soft Skills
Strong analytical and problem-solving abilities Excellent systems analysis and architecture design skills Strong communication and collaboration skills Ability to mentor engineers and provide technical leadership Ability to work independently in Agile environments Strong focus on code quality and best practices
Preferred Experience
Experience with AWS, Azure, or GCP managed services Experience in financial services, banking technology, or enterprise transaction systems Experience with Unix/Linux environments and network configurations
Responsibilities
Analyze business requirements and design scalable backend solutions Develop high-quality, production-ready Java applications Design and implement distributed backend and data processing systems Lead technical delivery of complex backend initiatives Optimize application performance, memory usage, and concurrency Diagnose and resolve production issues and performance bottlenecks Develop and maintain ETL pipelines and real-time streaming applications Implement REST APIs and distributed system integrations Champion Test-Driven Development and code quality standards Conduct code reviews and promote engineering best practices Mentor engineering team members on architecture and clean coding practices Partner with cross-functional teams to deliver enterprise backend solutions Only those lawfully authorized to work in the designated country associated with the position will be considered. Please note that all Position start dates and duration are estimates and may be reduced or lengthened based upon a client’s business needs and requirements.
Benefits
For information and details on employment benefits offered with this position, please visit here. Should you have any questions/concerns, please contact our HR Department via our secure website.
California Pay Equity
For information and details on pay equity laws in California, please visit the State of California Department of Industrial Relations' website here.
Rose International is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender (expression or identity), national origin, arrest and conviction records, disability, veteran status or any other characteristic protected by law. Positions located in San Francisco and Los Angeles, California will be administered in accordance with their respective Fair Chance Ordinances.
If you need assistance in completing this application, or during any phase of the application, interview, hiring, or employment process, whether due to a disability or otherwise, please contact our HR Department.
Rose International has an official agreement (ID #132522), effective June 30, 2008, with the U.S. Department of Homeland Security, U.S. Citizenship and Immigration Services, Employment Verification Program (E-Verify). (Posting required by OCGA 13/10-91.).
About Rose International
Founded in 1993, Rose International is a leader in providing Staffing and Total Talent Solutions nationwide. We have offices across the U.S. and offer thousands of opportunities across the industries we service.
Rose International is an employee-oriented company. We offer challenging assignments and strive to be with our employees long-term. We are committed to quality people and service. At Rose, we offer our employees the opportunity to join a highly skilled, professional team and provide continuous professional development.
Employees of Rose International get the opportunity to work for some of the best corporations and government agencies across the country. When you work with Rose, we provide a challenging, exciting and professional atmosphere. We allow you to showcase your skills and take the time to find a position that is the right fit for you.
Specifically, our services include; Staffing (IT, Admin/Clerical, Engineering, Finance/Accounting, HR/Legal, Light Industrial, Marketing/Creative and Procurement/Supply Chain), Contact Center, Delivery-Centric MSP, Named Resource and IC Compliance, Direct Source and Recruitment Process Outsourcing (RPO).
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About the role
Date Posted: 08/05/2026
Hiring Organization: Rose International
Position Number: 505225
Industry: Financial Services
Job Title: Senior Java Backend Developer
Job Location: Mississauga, ON, Canada, L4T 2R4
Work Model: Hybrid
Work Model Details: Onsite 3 days per week.
Shift: Standard shift
Employment Type: Temporary
FT/PT: Full-Time
Estimated Duration (In months): 7
Min Hourly Rate($): 70.00
Max Hourly Rate($): 75.00
Must Have Skills/Attributes: Java, OOPS, Software Development
Experience Desired: Core Java, Java 17, Java 21, JVM Tuning, Multithreading, Concurrency, Garbage Collection, OOP (8 yrs); Strong Spring Boot and Spring ecosystem experience (8 yrs)
C2C is not available
Job Description
Only qualified Senior Java Backend Developer candidates located near the Mississauga, ON area to be considered due to the position requiring an onsite presence
Required Experience
8+ years of professional experience in application development or systems analysis with a strong focus on Java backend development Extensive experience designing and developing scalable, high-performance backend applications Hands-on experience building distributed data processing systems, ETL pipelines, and real-time streaming solutions Strong experience with Spring Framework including Spring Boot, Spring Cloud, Spring Data, Spring Security, Hibernate, and JPA Experience designing and optimizing relational and NoSQL databases Experience with distributed systems, microservices, event-driven architecture, REST APIs, and gRPC Experience with containerization, CI/CD pipelines, and DevOps practices Experience leading technical delivery of complex backend initiatives Experience with Test-Driven Development, unit testing, integration testing, and code reviews
Technical Skills
Core Java 11, 17, or 21 Advanced multithreading and concurrency JVM memory management and garbage collection OOP, SOLID principles, design patterns, data structures, and algorithms Apache Kafka, Apache Spark, Flink, Hadoop ETL, batch processing, stream processing, and messaging systems Spring Boot, Spring Cloud, Spring Data, Spring Security Hibernate and JPA SQL, PostgreSQL, Oracle NoSQL databases including MongoDB, Cassandra, and Redis Docker and Kubernetes Jenkins, GitHub Actions, or GitLab CI REST APIs and gRPC Linux and shell scripting Cloud platforms including AWS, Azure, or GCP
Soft Skills
Strong analytical and problem-solving abilities Excellent systems analysis and architecture design skills Strong communication and collaboration skills Ability to mentor engineers and provide technical leadership Ability to work independently in Agile environments Strong focus on code quality and best practices
Preferred Experience
Experience with AWS, Azure, or GCP managed services Experience in financial services, banking technology, or enterprise transaction systems Experience with Unix/Linux environments and network configurations
Responsibilities
Analyze business requirements and design scalable backend solutions Develop high-quality, production-ready Java applications Design and implement distributed backend and data processing systems Lead technical delivery of complex backend initiatives Optimize application performance, memory usage, and concurrency Diagnose and resolve production issues and performance bottlenecks Develop and maintain ETL pipelines and real-time streaming applications Implement REST APIs and distributed system integrations Champion Test-Driven Development and code quality standards Conduct code reviews and promote engineering best practices Mentor engineering team members on architecture and clean coding practices Partner with cross-functional teams to deliver enterprise backend solutions Only those lawfully authorized to work in the designated country associated with the position will be considered. Please note that all Position start dates and duration are estimates and may be reduced or lengthened based upon a client’s business needs and requirements.
Benefits
For information and details on employment benefits offered with this position, please visit here. Should you have any questions/concerns, please contact our HR Department via our secure website.
California Pay Equity
For information and details on pay equity laws in California, please visit the State of California Department of Industrial Relations' website here.
Rose International is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender (expression or identity), national origin, arrest and conviction records, disability, veteran status or any other characteristic protected by law. Positions located in San Francisco and Los Angeles, California will be administered in accordance with their respective Fair Chance Ordinances.
If you need assistance in completing this application, or during any phase of the application, interview, hiring, or employment process, whether due to a disability or otherwise, please contact our HR Department.
Rose International has an official agreement (ID #132522), effective June 30, 2008, with the U.S. Department of Homeland Security, U.S. Citizenship and Immigration Services, Employment Verification Program (E-Verify). (Posting required by OCGA 13/10-91.).
About Rose International
Founded in 1993, Rose International is a leader in providing Staffing and Total Talent Solutions nationwide. We have offices across the U.S. and offer thousands of opportunities across the industries we service.
Rose International is an employee-oriented company. We offer challenging assignments and strive to be with our employees long-term. We are committed to quality people and service. At Rose, we offer our employees the opportunity to join a highly skilled, professional team and provide continuous professional development.
Employees of Rose International get the opportunity to work for some of the best corporations and government agencies across the country. When you work with Rose, we provide a challenging, exciting and professional atmosphere. We allow you to showcase your skills and take the time to find a position that is the right fit for you.
Specifically, our services include; Staffing (IT, Admin/Clerical, Engineering, Finance/Accounting, HR/Legal, Light Industrial, Marketing/Creative and Procurement/Supply Chain), Contact Center, Delivery-Centric MSP, Named Resource and IC Compliance, Direct Source and Recruitment Process Outsourcing (RPO).