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Backend Engineer Java Jobs in Toronto, ON (NOW HIRING)

Java Backend Engineer

Mississauga, ON · On-site

CA$94K - CA$141K/yr

About the Role The Java Backend Engineer is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in ...

Principal Backend Engineer

Toronto, ON · On-site

CA$160K - CA$220K/yr

We're looking for an exceptional backend engineer and hands-on architect to help us scale and ... Develop and maintain RESTful APIs using Java (Spring Boot or related web frameworks) or Python ...

Senior Backend Engineer

Toronto, ON · On-site

CA$140K - CA$180K/yr

We're looking for an exceptional backend engineer and hands-on architect to help us scale and ... Develop and maintain RESTful APIs using Java (Spring Boot or related web frameworks) or Python ...

As a Senior Backend Engineer , you will have a hand in architecting the technology and customer ... Rich development experience with Java, Spring, and SQL * Experience developing scalable, customer ...

Java Backend Developer

Mississauga, ON · On-site

CA$94K - CA$141K/yr

The Java Backend Developer is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination ...

The Opportunity: We're looking for an experienced Java Backend Developer to join our dynamic team. You'll play a crucial role in delivering innovative integration solutions for our Commercial Banking ...

Senior Backend Java Developer Location: Mississauga, ON 6 months contract to hire 3 days onsite per week Required Skills & Experience * 8+ years of experience in application development or systems ...

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Backend Engineer Java information

What does a backend engineer Java do?

A Backend Engineer Java is responsible for developing and maintaining the server-side logic, databases, and application programming interfaces (APIs) using the Java programming language. They ensure that the backend of web applications or software systems is efficient, secure, and scalable. Their work often involves collaborating with frontend developers, designing system architecture, and optimizing performance to handle large volumes of user requests. Backend Java engineers often use frameworks such as Spring or Hibernate and work with databases like MySQL or PostgreSQL.

What are the key skills and qualifications needed to thrive as a backend engineer Java?

To thrive as a Backend Engineer Java, you need a solid understanding of Java programming, data structures, algorithms, and experience with backend frameworks, typically supported by a relevant degree or industry experience. Familiarity with tools and technologies such as Spring Boot, RESTful APIs, relational databases, and build systems like Maven or Gradle is commonly required. Problem-solving ability, teamwork, and effective communication are crucial soft skills for excelling in collaborative and fast-paced development environments. These combined skills ensure robust, scalable backend systems that meet business needs and integrate smoothly within larger software architectures.

How does a backend engineer Java typically collaborate with frontend developers and other stakeholders in a project?

As a Backend Engineer Java, you will regularly collaborate with frontend developers to ensure seamless integration between server-side logic and user interfaces. This often involves participating in design discussions, clarifying API requirements, and troubleshooting integration issues. You’ll also engage with product managers, QA engineers, and sometimes DevOps teams to align on project goals, timelines, and deployment strategies. Effective communication is key to translating business requirements into reliable backend solutions and maintaining smooth workflows across the team.

What is the difference between Backend Engineer Java vs Backend Developer Java?

AspectBackend Engineer JavaBackend Developer Java
Primary FocusDesigning, developing, and maintaining server-side applications and systemsImplementing and coding backend functionalities based on specifications
ResponsibilitiesSystem architecture, performance optimization, API developmentWriting code, debugging, integrating databases
Skills & CertificationsJava, Spring, REST APIs, SQL, cloud platformsJava, Spring, SQL, version control, testing tools
Work EnvironmentCollaborative teams, project planning, architecture designCode implementation, debugging, feature development

Both roles require Java expertise and similar certifications, but Backend Engineer Java typically involves higher-level system design and architecture responsibilities, while Backend Developer Java focuses more on coding and implementing features. Employers often see these roles as complementary within software development teams.

What are popular job titles related to Backend Engineer Java jobs in Toronto, ON?

For Backend Engineer Java jobs in Toronto, ON, the most frequently searched job titles are:

What job categories do people searching Backend Engineer Java jobs in Toronto, ON look for?

The top searched job categories for Backend Engineer Java jobs in Toronto, ON are:

What cities near Toronto, ON are hiring for Backend Engineer Java jobs?

Cities near Toronto, ON with the most Backend Engineer Java job openings:

Infographic showing various Backend Engineer Java job openings in Toronto, ON as of August 2026, with employment types broken down into 92% Full Time, 4% Part Time, and 4% Contract. Highlights an 85% Physical, 7% Hybrid, and 8% Remote job distribution.

Java Backend Engineer

Citi

Mississauga, ON • On-site

CA$94K - CA$141K/yr

Full-time

This job post has expired 2 days ago. Applications are no longer accepted.


Key responsibilities

  • Design, develop, and maintain Java/Spring Boot applications and RESTful microservices.

  • Build scalable backend components with a focus on performance, reliability, and clean architecture.

  • Troubleshoot and resolve issues across development, testing, and production environments.


Citibank rating

8.4

Company rating: 8.4 out of 10

Based on 179 frontline employees who took The Breakroom Quiz

39th of 175 rated banks


Job description

About the Role The Java Backend Engineer is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to applications systems analysis and programming activities. We are seeking a highly skilled Java Developer with strong expertise in building scalable, secure, and highperformance backend systems.

You will work closely with architects, leads, DevOps, QA, and business teams to deliver modern microservicesbased solutions using Java, Spring Boot, Kafka, containers, and multiple databases. Key Responsibilities Design, develop, and maintain Java/Spring Boot applications and RESTful microservices. Build scalable backend components with strong focus on performance, reliability, and clean architecture.

Develop and optimize APIs, backend logic, and integrations with internal/external systems. Work with Oracle, MongoDB, MSSQL databases; Containerize and deploy applications using Docker and Kubernetes. Write clean, testable, welldocumented code and perform code reviews to maintain coding standards.

Develop automated unit/integration tests using JUnit and REST testing frameworks. Troubleshoot and resolve issues across development, testing, and production environments. Collaborate with crossfunctional teams and participate in Agile ceremonies throughout the SDLC.

Continuously improve application performance, development processes, and automation maturity. Qualifications: 5+ years relevant experience in Design, development, testing and deployment of high quality code 3+ years' experience and expertise in Core Java (Java 8+), OOPs, collections, concurrency, and multithreading. 3+ years of handson experience with Spring Boot, REST services, microservices architecture.

3+ years' experience with Database skills: Oracle, MongoDB, MSSQL Good to have Messaging systems: Kafka (producers, consumers, topics, streaming). Experience with Docker, Kubernetes, and containerized deployments. Strong knowledge of JSON, XML, serialization, annotations, caching, and distributed computing concepts.

Experience with Git/Bitbucket/GitHub, Maven/Gradle, CI/CD pipelines. Education: Bachelor's degree/University degree in Computer Engineering, Computer Science, Information systems or equivalent experience 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: $94,300.00 - $141,500.00 ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above. ------------------------------------------------------ Other Relevant Skills Back-End Development, Java, Spring Boot, Structured Query Language (SQL). ------------------------------------------------------ Automated Processing and AI We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening

Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi. Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making.

Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details. ------------------------------------------------------ This job opening is for an existing job vacancy. ------------------------------------------------------ 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.


What Citibank employees say

Pay

Benefits

Hours and flexibility

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Get the full story on Breakroom


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About Citigroup Inc

Sourced by ZipRecruiter

We live in an increasingly complex world. Companies these days are either born global or are going global at record speed. Business and geopolitics are forging an entirely new dynamic and consumers now expect financial services to be a seamless part of their digital lives. Citi is a bank that’s uniquely positioned for this moment. Through our vast global network and our on-the-ground expertise, we can connect the dots, anticipate change and empathize the needs of our clients and customers in ways that other banks simply cannot. Citi's mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. We have set expectations for how we must act to bring our mission to life. These expectations are at the heart of our Leadership Principles – we take ownership, we deliver with pride and we succeed together.

Industry

Banking and credit intermediation

Company size

5,001 - 10,000 Employees

Headquarters location

New York City, NY, US