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Java Application Developer Jobs in Ontario (NOW HIRING)

We are seeking a highly skilled Senior Java Engineer to design, develop, and maintain scalable ... systems Ensure application performance, scalability, reliability, and security Write clean ...

\n \n \n \n \n Cloud Developer (Java) Contract \- 450\-475 Per Day \- 6 month Contract with ... application. There will be just 1 round of interview. \n \n \n \n \n \n

SENIOR JAVA SOFTWARE DEVELOPER Location: Toronto, ON (uptown) Industry: Technology Type: Permanent ... Mobile application development experience (Android and IOS) Excellent verbal and written ...

\n \n \n \n \n We are looking for an experienced Java Developer for an exciting contract position ... Experience with deployment of a major JEE application \n * Experience building API's \n * Cloud ...

CA$60K - CA$65K/yr

... Java, Spring Boot, REST APIs, relational databases, and cloud technologies. The developer will work ... Ensure application performance, scalability, reliability, and security best practices. * Contribute ...

New

... developer on Java or AEM \n * Strong experience within: JavaScript, HTML5, CSS \/ Sass \n ... application security, AEM components, editable templates, workflows, OSGI Bundles, Maven, HTL and ...

Tipperary \n \n \n \n \n \n Role Overview \n \n \n \n \n \n Senior application developers will, in ... Excellent knowledge in JEE\/Spring, JAVA 8, Shell\-Scripting. \n * Extensive knowledge on modern ...

The Role We're looking for an Intermediate Java Backend Developer to join our Insurance practice in ... Design, develop, and optimize RESTful APIs while improving application performance, resiliency, and ...

You will work on a high performing team of Senior Java Developers where you will be joining the ... application. There will be just 1 round of interview. Apply today! \n \n \n

We are looking for a Senior Developer for our clients digital solutions area were you will be using ... Experience troubleshooting Java \/ AEM \/ TomCat web application and web infrastructure \n * Strong ...

Application design with resiliency * Java 21 and up, Spring boot 4 * Database design: MongoDB ... Curious of engineering challenge and eager to try. * Ability to work collaboratively within a Team ...

... developer on Java development and\/or AEM \n * Experience with Lean \/ Agile development ... application and web infrastructure \n * Development experience on MySQL, 3rd party REST\/SOAP web ...

Java Backend Developer

Etobicoke, ON ยท Hybrid

CA$100K - CA$135K/yr

As a Java Back-End Developer at Localcoin, you will be responsible for developing and maintaining ... Monitor application performance, identify bottlenecks, and enhance efficiency to improve user ...

Senior Java Developer

Toronto, ON ยท Hybrid

CA$120K - CA$145K/yr

About The Role As a Full Stack Java Developer you'll be tasked with working on web application development in Java and Spring Boot. Working within the software development team, your duties will ...

Showing results 41-60

Java Application Developer information

What is the difference between Java Application Developer vs Java Software Engineer?

AspectJava Application DeveloperJava Software Engineer
Required CredentialsBachelor's in Computer Science or related field, Java certificationsBachelor's in Computer Science or related field, Java certifications
Work EnvironmentDevelops, tests, and maintains Java applicationsDesigns and implements Java-based solutions, often involved in architecture
Employer & Industry UsageTech companies, software firms, enterprise applicationsTech firms, consulting, enterprise software development
Common Search & ComparisonFocuses on application development tasksBroader role including system design and architecture

Java Application Developers primarily focus on building, testing, and maintaining Java applications, while Java Software Engineers often have a broader role involving system design and architecture. Both roles require similar credentials and are used across tech and enterprise industries, but their day-to-day responsibilities differ slightly.

What are some common challenges Java application developers face when working on large-scale enterprise projects?

Java Application Developers working on large-scale enterprise projects often encounter challenges such as managing complex codebases, ensuring application scalability, and maintaining robust security practices. Coordinating with cross-functional teams like QA, DevOps, and UI/UX can also present integration and communication hurdles. Staying up-to-date with evolving Java frameworks and best practices is essential to address performance bottlenecks and optimize application efficiency. Proactive problem-solving and effective collaboration are key to overcoming these challenges.

What does a Java application developer do?

A Java Application Developer designs, develops, and maintains software applications using the Java programming language. They are responsible for writing clean, efficient code, debugging and resolving technical issues, and collaborating with other developers, designers, and stakeholders to ensure applications meet user needs. Java Application Developers often work on both frontend and backend components, integrate databases, and ensure the security and scalability of applications. They may also participate in code reviews, testing, and documentation throughout the software development lifecycle.

What are the key skills and qualifications needed to thrive as a Java application developer?

To thrive as a Java Application Developer, you need strong proficiency in Java programming, object-oriented design, and a solid understanding of software development principles, typically supported by a degree in computer science or a related field. Familiarity with frameworks like Spring or Hibernate, version control systems such as Git, and experience with build tools and IDEs are highly valued, and certifications like Oracle Certified Professional Java Programmer can be advantageous. Excellent problem-solving abilities, effective communication, and strong teamwork skills set top developers apart. These competencies ensure the delivery of robust, maintainable applications and facilitate collaboration in dynamic development environments.
What cities in Ontario are hiring for Java Application Developer jobs? Cities in Ontario with the most Java Application Developer job openings:
Infographic showing various Java Application Developer job openings in Ontario as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Senior Java Developer

Virtusa

Mississauga, ON โ€ข On-site

Full-time

Re-posted 12 days ago


Job description

We are seeking a highly skilled Senior Java Engineer to design, develop, and maintain scalable, high-performance enterprise applications. The ideal candidate will have deep expertise in Java and modern backend / frontend technologies, a strong understanding of system design, and the ability to mentor junior engineers while collaborating with cross-functional teams. Key Responsibilities Design, develop, test, and maintain high-quality Java applications and services Lead technical design discussions and contribute to architectural decisions Build and optimize RESTful APIs, microservices, and backend systems Ensure application performance, scalability, reliability, and security Write clean, maintainable, and well-documented code following best practices Conduct code reviews and provide constructive feedback to team members Mentor junior engineers and support team knowledge sharing Collaborate with product managers, QA, DevOps, and other stakeholders Troubleshoot complex technical issues in development and production environments Participate in Agile/Scrum ceremonies and contribute to continuous improvement Required Qualifications Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience) 7 years of professional experience in software development Strong proficiency in Java (Java 17 ) Experience with Spring / Spring Boot Solid understanding of object-oriented design, design patterns, and SOLID principles Experience building RESTful APIs and backend services Strong knowledge of SQL and relational databases (e.g., PostgreSQL, Oracle, MySQL) Familiarity with Git and modern CI/CD pipelines Experience working in Agile development environments Excellent problem-solving, communication, and collaboration skills Preferred Qualifications Experience with microservices architecture Exposure to cloud platforms (AWS, Azure, or GCP) Experience with containers and orchestration (Docker, Kubernetes) Knowledge of message queues / streaming platforms (Kafka, RabbitMQ) Familiarity with NoSQL databases (MongoDB, DynamoDB, Cassandra) Understanding of security best practices and authentication (OAuth2, JWT) Experience supporting high-availability or mission-critical systems


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About Virtusa

Sourced by ZipRecruiter

We are builders, makers, and doers with the technical skills and domain expertise to transform your business at scale and speed without disruption. Our unique Engineering First approach blends deep industry expertise and empowered, agile teams, to create holistic solutions that seamlessly move the business forward. We help clients engage with new technology paradigms to creatively build solutions that drive them to the forefront of their industries.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Westborough, MA, US

Year founded

1996

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