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Java Jobs in Ontario (NOW HIRING)

StackandCo

\n \n \n \n \n Full Stack Java Developer (Java\/JavaScript\/ReactJS) \- 520 per day \- 12 month contract \- Long term project with multinational Financial Services client Duration: 12 Months Rolling ...

StackandCo

You will work on a high performing team of Senior Java Developers where you will be joining the newly formed Cloud Transformation team. There are many Cloud Architects across the team who you will be ...

StackandCo

\n \n \n \n \n We are looking for an experienced Java Developer for a contract position in Dublin. You will be joining a rapidly expanding team who are working on the most cutting edge products. \n \n ...

Citibank (Switzerland) AG

Join Citi as the Lead Java Back End Developer in a hybrid role based in Mississauga, Ontario. Your programming expertise and leadership will play a crucial role in system innovations and enhancements.

Targeted Talent

Java Technical Lead

Ottawa, ON · Remote

We are looking for an experienced Java Technical Lead for our client. This is a permanent position that is remote anywhere in Canada! Our client is a global enterprise company with a product that you ...

Citi

Java Developer - Officer

Mississauga, ON

CA$79K - CA$110K/yr

The Java Developer Analyst is an junior level position within the Markets Treasury Technology team, specifically focusing on the Money Markets domain. This role is responsible for participating ...

Targeted Talent

Java Technical Lead

Kitchener, ON · Remote

We are looking for an experienced Java Technical Lead for our client. This is a permanent position that is remote anywhere in Canada! Our client is a global enterprise company with a product that you ...

Targeted Talent

Java Technical Lead

Kitchener, ON · Remote

We are looking for an experienced Java Technical Lead for our client. This is a permanent position that is remote anywhere in Canada! Our client is a global enterprise company with a product that you ...

Targeted Talent

Java Technical Lead

Waterloo, ON · Remote

We are looking for an experienced Java Technical Lead for our client. This is a permanent position that is remote anywhere in Canada! Our client is a global enterprise company with a product that you ...

StackandCo

\n \n \n Senior Java Engineer \- \/AWS \n \n * Dublin\/ Galway - Remote\/WFH \n * Long Term Contract \n * Negotiable Day Rate \n Leading Fintech\/ Financial Services organisation is looking for a ...

StackandCo

\n \n \n \n \n Our client has a requirement for a highly experienced Java Developer for a contract position in Dublin. You will be joining a highly collaborative team offering you the opportunity to ...

StackandCo

Senior Java Developer

Galway, NY · On-site

\n \n \n \n \n We have a contract position available for a Java developer within a rapidly growing global team. You will be responsible for the design and development of the company's platform and ...

Targeted Talent

Java Technical Lead

Ottawa, ON · Remote

We are looking for an experienced Java Technical Lead for our client. This is a permanent position that is remote anywhere in Canada! Our client is a global enterprise company with a product that you ...

StackandCo

\n \n \n \n \n Our client is looking for an experienced Java developer for a contract position in Dublin. \n \n \n You will be joining a well established team working with clients both onshore and ...

StackandCo

\n \n \n \n \n We are looking for an experienced Java Developer for a contract position in Dublin. You will be working as part of an agile team to deliver the highest quality solutions! \n \n \n \n \n ...

YO AI Labs

Java Open Source Contributor

Toronto, ON · Remote

Java Open Source Contributor Role Type: Contract Location: Remote Scope of Work: * Contribute production-quality code, reviews, and documentation to open-source repositories relevant to the customer ...

Targeted Talent

Java Technical Lead

Waterloo, ON · Remote

We are looking for an experienced Java Technical Lead for our client. This is a permanent position that is remote anywhere in Canada! Our client is a global enterprise company with a product that you ...

Scotiabank

Java Developer

Toronto, ON · On-site

Commercial Banking Engineering is seeking a skilled Java Developer with extensive experience in Java, Struts, SQL, REST APIs, SOAP services, and other backend Java technologies. The ideal candidate ...

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Java information

What is Java?

Java is a class-based object-oriented programming language that was developed in 1995 by Sun Microsystems and later bought by Oracle. Java was designed as a general language capable of programming software for commercial use. It is based on several previous languages such as Objective C, C++, and C#. Java can be used on most major operating systems, including Windows, Apple, and Linux distributions. There is also a Java virtual machine, which allows programmers and developers to work on different operating systems within a single platform.

What does a Java developer do?

A Java Developer is a software professional who specializes in designing, developing, and maintaining applications using the Java programming language. They often work on web, mobile, or enterprise applications, collaborating with other programmers, designers, and stakeholders to deliver functional software solutions. Their responsibilities include writing clean and efficient code, debugging issues, and ensuring applications are secure and scalable. Java Developers are also involved in testing, deploying, and updating software as technology and requirements evolve.

What are the key skills and qualifications needed to thrive as a Java developer, and why are they important?

To thrive as a Java 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 development frameworks like Spring or Hibernate, version control systems such as Git, and relevant certifications (e.g., Oracle Certified Java Programmer) is highly beneficial. Analytical thinking, problem-solving, and effective communication are important soft skills that distinguish top candidates in collaborative environments. These skills and qualifications are vital for building robust, efficient applications and contributing effectively to development teams.

How does a Java developer typically collaborate with other teams during a software project?

Java developers frequently work alongside front-end developers, QA specialists, and project managers to ensure smooth delivery of software projects. They participate in code reviews, daily stand-ups, and sprint planning meetings, sharing progress and addressing technical challenges collaboratively. Effective communication and coordination with other departments, such as DevOps for deployment or UX/UI teams for interface integration, are essential for delivering high-quality applications. This collaborative environment helps Java developers expand their technical knowledge and build strong professional relationships.

What is the difference between Java vs Python Developer?

AspectJava DeveloperPython Developer
Required CredentialsBachelor's in Computer Science, Java certificationsBachelor's in Computer Science, Python certifications
Work EnvironmentEnterprise applications, Android developmentWeb development, data science, automation
Industry UsageFinance, telecom, enterprise softwareTech startups, data analysis, AI projects
Common Search/ComparisonJava DeveloperPython Developer

Java and Python developers often share similar educational backgrounds and certifications. Java developers typically work on enterprise applications and Android development, while Python developers focus on web development, data science, and automation. Both roles are highly sought after in different industry sectors, with Java more common in large enterprises and Python popular in startups and AI projects.

Is Java still in demand?

Java remains a highly in-demand programming language for software development, enterprise applications, and Android app creation. Its widespread use in large organizations and the availability of Java certifications contribute to ongoing job opportunities for Java developers.

What jobs can I get if I learn Java?

Java developers are in demand for roles such as software engineer, backend developer, Android app developer, and full-stack developer. These positions typically require knowledge of Java programming, object-oriented design, and related tools like Spring or Hibernate, often with certifications or experience in software development environments.

What jobs can I get with Java?

Java is a versatile programming language used in various roles such as Java developer, software engineer, backend developer, Android app developer, and systems analyst. These jobs typically require knowledge of Java frameworks, object-oriented programming, and development tools like IDEs and version control systems.
More about Java jobs

What are the most commonly searched types of Java jobs in Ontario?

The most popular types of Java jobs in Ontario are:

What are popular job titles related to Java jobs in Ontario?

For Java jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Java jobs in Ontario look for?

The top searched job categories for Java jobs in Ontario are:

What cities in Ontario are hiring for Java jobs?

Cities in Ontario with the most Java job openings:

Java jobs near you
Infographic showing various Java job openings in Ontario as of August 2026, with employment types broken down into 83% Full Time, 7% Part Time, and 10% Contract. Highlights an 81% Physical, 6% Hybrid, and 13% Remote job distribution.

Java Backend Developer

Sapsol Technologies Inc

Mississauga, ON • On-site

Full-time

Re-posted 4 days ago

Job description

Key Responsibilities
  • Design, develop, and maintain backend services using Core Java and Spring Boot
  • Build and manage Microservices-based architecture
  • Develop and consume RESTful APIs
  • Work with SQL and/or NoSQL databases for data storage and retrieval
  • Collaborate with frontend developers, DevOps teams, and stakeholders
  • Optimize application performance, scalability, and security
  • Participate in code reviews, testing, and deployment processes
  • Troubleshoot and resolve production issues
Required Skills
  • Strong experience in Core Java
  • Hands-on expertise in Spring Boot
  • Experience with Microservices architecture
  • Solid understanding of REST API development
  • Experience with SQL (MySQL, PostgreSQL) and/or NoSQL databases (MongoDB, Cassandra)
  • Good understanding of data structures and algorithms
  • Familiarity with Git and version control systems
Preferred Skills (Nice to Have)
  • Experience with cloud platforms (AWS/Azure)
  • Knowledge of Docker / Kubernetes
  • Exposure to CI/CD pipelines (Jenkins, GitHub Actions)
  • Understanding of security best practices (OAuth, JWT)

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