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Senior Java Developer Jobs in Ontario (NOW HIRING)

Senior Java Developer

Mississauga, ON · On-site

CA$94K - CA$141K/yr

The Applications Development Senior Programmer Analyst is an intermediate level position ... Core Java, Java EE, Spring Boot, Spring Microservices. * Programming Principles: Strong ...

New

\n \n \n \n \n Are you a Senior Java Developer with extensive cloud experience looking for your next challenge? Do you have Microservices and TDD? Are you interesting in working in the banking sector?

A Java Developer designs, develops, tests, and maintains scalable Java-based applications (web, enterprise, mobile) by writing clean code, collaborating with teams, and integrating with databases and ...

Senior Java Developer - Operate

Toronto, ON · On-site

CA$72K - CA$138K/yr

Learn from deep subject matter experts through mentoring and on the job coaching Summary We are seeking Senior Java Developers to join our team on a 1-year fixed term. As a Java Developer at Deloitte ...

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 ...

\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 ...

... 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 working ...

\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 ...

\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 ...

\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 ...

Senior Java Developer

Toronto, ON · 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 ...

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 ...

As a developer, the candidate will be responsible for developing & deploying technical solution ... es:- Java (Core, JDBC, MT, Collections, I/O), Spring B oot- SQL.PL-SQL on Oracle DB- Container ...

... Centre on a Senior Software Engineer vacancy (multiple available). \n \n \n \n \n \n We need ... Highly skilled Software Engineer, ideally 7+ years' experience primarily in Java (flexible) \n

... on a Senior Software Engineer vacancy. \n \n \n \n \n \n This is a nice opportunity to join a ... Highly skilled Software Engineer, ideally 7+ years' experience primarily in Java (flexible) \n

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Showing results 1-20

Senior Java Developer information

See Ontario salary details

$67.5K

$125.1K

$172K

How much do senior java developer jobs pay per year?

As of Jun 18, 2026, the average yearly pay for senior java developer in Ontario is $125,072.00, according to ZipRecruiter salary data. Most workers in this role earn between $106,000.00 and $141,500.00 per year, depending on experience, location, and employer.

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

AspectSenior Java DeveloperJava Software Engineer
Required CredentialsBachelor's in CS or related, Java certifications often preferredBachelor's in CS or related, Java certifications beneficial
Work EnvironmentTeam lead roles, project management, mentoringDevelopment-focused, coding, testing, and implementation
Employer & Industry UsageTech companies, finance, e-commerceSoftware firms, startups, enterprise IT
Common Search & ComparisonOften compared for experience level and responsibilitiesSimilar roles with slight variations in scope

The main difference between a Senior Java Developer and a Java Software Engineer lies in their responsibilities and experience. Senior Java Developers typically take on leadership, mentoring, and project management roles, while Java Software Engineers focus more on coding, development, and technical implementation. Both roles require strong Java skills and relevant credentials, but the Senior Java Developer usually has more experience and a broader scope of responsibilities.

Is Java outdated in 2026?

Java remains a widely used programming language for senior Java developers in 2026, with ongoing updates and a large ecosystem supporting enterprise applications, Android development, and cloud services. Its stability, performance, and extensive libraries ensure its continued relevance in the software industry.

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

Senior Java Developers often encounter challenges such as maintaining code quality across large codebases, managing dependencies between modules, and ensuring optimal application performance. Collaborating with cross-functional teams—including QA, DevOps, and product management—requires clear communication and effective problem-solving. Additionally, staying updated with the latest Java frameworks and best practices is essential for delivering scalable and maintainable solutions in complex enterprise environments.

How much do senior Java developers make?

Senior Java developers typically earn between $100,000 and $150,000 annually, depending on experience, location, and industry. They often possess strong skills in frameworks like Spring and Hibernate and may hold certifications such as Oracle Certified Professional Java SE.

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

To thrive as a Senior Java Developer, you need advanced proficiency in Java programming, experience with software design patterns, and a strong grasp of backend development, often supported by a degree in computer science or related field. Familiarity with frameworks like Spring, build tools such as Maven or Gradle, and version control systems like Git, as well as knowledge of cloud platforms, is typically required. Excellent problem-solving, leadership, and communication skills help you guide teams and collaborate effectively. These competencies are crucial for delivering robust, scalable software solutions and driving technical success within development teams.

What are Senior Java Developers?

Senior Java Developers are experienced software engineers who specialize in using the Java programming language to design, develop, and maintain complex applications. They typically lead development teams, oversee project architecture, and ensure code quality through best practices. In addition to strong coding skills, they often mentor junior developers and collaborate with stakeholders to deliver robust software solutions. Their expertise is crucial in building scalable, high-performance applications across various industries.

Which pays more, C++ or Java?

For a Senior Java Developer, salary differences between C++ and Java roles depend on industry, location, and experience. Generally, C++ developers may earn higher salaries in fields like finance or game development due to specialized skills, while Java developers are often in demand for enterprise applications. Both skills are valuable, and compensation varies based on the specific job market and required expertise.

Is AI replacing Java developers?

AI is automating certain coding tasks and improving software development processes, but it does not replace the need for senior Java developers. Java developers are essential for designing, maintaining, and optimizing complex applications, and their expertise remains valuable despite advancements in AI tools. Skills in problem-solving, system architecture, and understanding AI integration are increasingly important for Java professionals.
What are the most commonly searched types of Java Developer jobs in Ontario? The most popular types of Java Developer jobs in Ontario are:
What are popular job titles related to Senior Java Developer jobs in Ontario? For Senior Java Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Senior Java Developer jobs in Ontario look for? The top searched job categories for Senior Java Developer jobs in Ontario are:
What cities in Ontario are hiring for Senior Java Developer jobs? Cities in Ontario with the most Senior Java Developer job openings:
What are popular job titles related to Senior Java Developer jobs in ON? For Senior Java Developer jobs in ON, the most frequently searched job titles are:
Infographic showing various Senior Java Developer job openings in Ontario as of June 2026, with employment types broken down into 1% As Needed, 88% Full Time, 9% Part Time, 1% Temporary, and 1% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $125,072 per year, or $60.1 per hour.
Senior Java Developer

Senior Java Developer

Citi

Mississauga, ON • On-site

CA$94K - CA$141K/yr

Full-time

This job post has expired today. Applications are no longer accepted.


Job description

The Applications Development Senior Programmer Analyst 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.
Responsibilities:

  • Conduct tasks related to feasibility studies, time and cost estimates, IT planning, risk technology, applications development, model development, and establish and implement new or revised applications systems and programs to meet specific business needs or user areas
  • Monitor and control all phases of development process and analysis, design, construction, testing, and implementation as well as provide user and operational support on applications to business users
  • Utilize in-depth specialty knowledge of applications development to analyze complex problems/issues, provide evaluation of business process, system process, and industry standards, and make evaluative judgement
  • Recommend and develop security measures in post implementation analysis of business usage to ensure successful system design and functionality
  • Consult with users/clients and other technology groups on issues, recommend advanced programming solutions, and install and assist customer exposure systems
  • Ensure essential procedures are followed and help define operating standards and processes
  • Serve as advisor or coach to new or lower level analysts
  • Has the ability to operate with a limited level of direct supervision.
  • Can exercise independence of judgement and autonomy.
  • Acts as SME to senior stakeholders and /or other team members.
  • Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.


Qualifications:

  • 5-8 years of relevant experience
  • Experience in systems analysis and programming of software applications
  • Experience in managing and implementing successful projects
  • Working knowledge of consulting/project management techniques/methods
  • Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements
  • Modern Java Technologies: Core Java, Java EE, Spring Boot, Spring Microservices.
  • Programming Principles: Strong understanding of OOPS (Object-Oriented Programming), Data Structures, and Algorithms.
  • Solution Design: Extensive experience in designing and developing integrated solutions with non-functional requirements (scalability, availability, consistency).
  • Coding & Troubleshooting: Expertise in problem-solving and troubleshooting, ability to write "clean code" using Core Java, J2EE, Collections, and Multithreading.
  • API Development: Proficiency in API and Web Services development using REST protocols.
  • Testing: Strong experience in Unit testing and ensuring test coverage.
  • Cloud Platforms: Solid understanding of Docker and Kubernetes.
  • API Documentation: Experience using Swagger/OpenAPI to define, document, implement, and test APIs.
  • Design Patterns: Familiarity with Standard and Enterprise Design Patterns.
  • Messaging Platforms: Experience with High-Speed Messaging platforms, particularly Kafka.
  • Databases: Advanced knowledge of Relational Databases, SQL, and ORM technologies (JPA2, Hibernate).
  • Security: Expertise in Authentication, Authorization, and security protocols.
  • CI/CD: Experience with Continuous Integration / Continuous Delivery (CI/CD) tools.
  • Communication: Proven ability to communicate effectively both verbally and in writing.
  • AI/ML/LLMs: Knowledge of AI/ML, LLMs (including Spring AI / Python).


Education:

  • Bachelor’s degree/University degree 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.

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Job Family Group: Technology

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Job Family:Applications Development

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Time Type:Full time

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Primary Location Full Time Salary Range:$94,300.00 - $141,500.00

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Most Relevant Skills Please see the requirements listed above.

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Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.

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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.

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This job opening is for an existing job vacancy.

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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.