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Java Developer Volunteer Jobs in Ontario (NOW HIRING)

Software Developer

Toronto, ON · Hybrid

CA$101K - CA$118K/yr

We are looking for a Java Software Developer who will take a key role on our team. The ideal ... Generous time off policy, including 2 paid days annually to volunteer at a charity of your choice

Senior Software Engineer

Toronto, ON · On-site

CA$130K - CA$140K/yr

Develop scalable APIs and data services using Java (Spring Boot), Databricks and relational ... Familiarity with Git and DevOps practices and tools, including CI/CD pipelines and infrastructure ...

... Java, .NET/C#, Go, etc.), with demonstrated AWS cloud experience * Experience implementing and ... Organized Volunteer Events * Game room, including a flight simulator! * Active Inclusion ...

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Java Developer Volunteer information

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How much do java developer volunteer jobs pay per hour?

As of Sep 7, 2026, the average hourly pay for java developer volunteer in Ontario is $50.46, according to ZipRecruiter salary data. Most workers in this role earn between $38.46 and $62.98 per hour, depending on experience, location, and employer.

What is a Java Developer Volunteer?

A Java Developer Volunteer role involves contributing to software development projects without financial compensation. Volunteers typically assist in coding, debugging, testing, and maintaining Java-based applications for nonprofits, open-source projects, or startups. This role helps developers gain experience, build portfolios, and support meaningful initiatives while collaborating with teams.

What are the key skills and qualifications needed to thrive as a Java Developer Volunteer?

To excel as a Java Developer Volunteer, you should have a solid grasp of Java programming, object-oriented design, and version control systems, often demonstrated through coursework, certifications, or hands-on project experience. Familiarity with tools like Eclipse or IntelliJ IDEA, build systems (Maven or Gradle), and collaborative platforms such as GitHub is commonly expected. Strong communication, teamwork, and a willingness to learn set exceptional volunteers apart. These skills and qualities ensure you can contribute effectively to projects, adapt to dynamic team needs, and make the most meaningful impact in volunteer settings.

What types of projects or tasks can I expect to work on as a Java Developer Volunteer?

As a Java Developer Volunteer, you might work on a range of projects, such as developing new software features, fixing bugs, writing unit tests, or helping maintain existing Java applications for nonprofits or community organizations. You could also assist in documentation, code reviews, or collaborating on open-source initiatives, depending on the organization's needs. These roles often provide exposure to agile development practices and teamwork with other engineers, designers, and project managers. Volunteering in this capacity not only helps worthwhile causes but also allows you to expand your portfolio and gain practical experience with real-world applications.

Is Java developer still in demand?

Java developers remain in high demand due to the language's widespread use in enterprise applications, Android development, and backend systems. Skills in frameworks like Spring and knowledge of cloud platforms can enhance job prospects in this field.

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 Java Developer Volunteer jobs in Ontario?

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

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

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

What cities in Ontario are hiring for Java Developer Volunteer jobs?

Cities in Ontario with the most Java Developer Volunteer job openings:

Infographic showing various Java Developer Volunteer job openings in Ontario as of August 2026, with employment types broken down into 84% Full Time, 15% Part Time, and 1% Contract. Highlights an 93% Physical, 3% Hybrid, and 4% Remote job distribution, with an average salary of $104,958 per year, or $50.5 per hour.

Senior Software Engineer (Java, Capital Markets)

Exadel Inc (Website)

Toronto, ON • Hybrid

CA$80 - CA$85/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 18 days ago


Key responsibilities

  • Review and analyze an existing legacy Java code repository and associated backend services

  • Support the redesign, development, and migration of functionality onto the current architecture

  • Troubleshoot complex technical issues in environments with limited documentation


Job description

Why Join Exadel

We're an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what's next.
What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client

A leading wholesale bank providing capital markets, investment banking, and advisory services worldwide. Recently expanded into a top-tier research platform, the firm focuses on high-growth sectors like technology and healthcare. It integrates advanced AI for market analysis and risk management to serve thousands of professionals across global markets.

What You'll Do
  • Review and analyze an existing legacy Java code repository and associated backend services
  • Reverse-engineer existing services to understand their functionality, business purpose, dependencies, and data flows
  • Identify functionality dependent on legacy infrastructure and determine appropriate migration or modernization approaches
  • Support the redesign, development, and migration of required functionality onto the current architecture
  • Work with backend services that consume data from upstream trading and data platforms and make information available to downstream services and APIs
  • Collaborate with Front Office technology, development, and business stakeholders to validate existing functionality and future-state requirements
  • Participate in knowledge-transfer sessions with the existing team, particularly during the initial phase of the engagement
  • Troubleshoot complex technical issues in environments where existing systems may have limited documentation
  • Help ensure required business functionality is maintained throughout the migration process
  • Support the safe and successful decommissioning of legacy infrastructure
What You Bring
  • Strong hands-on experience as a Backend Java Developer, ideally at a senior level
  • Strong experience with modern/recent versions of Java and backend application development
  • Demonstrated ability to analyze, troubleshoot, and reverse-engineer existing or legacy Java codebases
  • Experience working within Financial Services and Capital Markets technology
  • Good understanding of Front Office concepts and trading environments
  • Understanding of financial products and derivatives, including fundamental concepts such as options and premiums
  • Experience working with backend services, APIs, integrations, and complex data flows
  • Ability to work independently with legacy systems and environments where documentation may be limited
  • Strong analytical and problem-solving skills
  • Strong communication skills and the ability to collaborate with both technical and business stakeholders
Nice to have
  • FX Options
  • Commodities, particularly Precious Metals
  • Derivatives and trading technology
  • Legacy application modernization
  • Platform migration or infrastructure decommissioning
  • Murex or Murex-related environments
English level

Upper-Intermediate

Work Type: Hybrid (1-2 days onsite per week)

Location: Toronto, Canada

Legal & Hiring Information
  • Compensation Transparency: The expected compensation range for this role is $80-85/hr CAD, with eligibility for commission, bonus, or other incentive compensation where applicable. Actual compensation will be determined based on experience, skills, qualifications, geographic location within Canada, and business needs.
  • Position Status: This posting is for a newly created position
  • Location Eligibility: This role is open to candidates residing in Canadian provinces, excluding Quebec.
  • Experience Requirements: We welcome applicants with relevant experience regardless of where it was obtained. Canadian work experience is not required.
  • Use of Artificial Intelligence in Hiring: We may use automated tools or artificial intelligence systems to support the screening, assessment, or selection of applicants as part of our hiring process.
  • Benefits Summary: Canadian employees are eligible to participate in Exadel's benefits programs, which may include extended health, dental and vision coverage; life and disability insurance; retirement savings programs; paid time off; paid holidays; and other wellness or voluntary benefit programs, subject to plan terms and eligibility requirements.
  • Equal Employment Opportunity: Exadel is an equal opportunity employer and does not discriminate on the basis of race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, age, disability, family status, or any other protected characteristic under applicable provincial human rights legislation.
  • Accessibility and Accommodation: We are committed to providing accommodations throughout the recruitment process in accordance with applicable accessibility and human rights legislation. If you require accommodation at any stage of the hiring process, please contact us. 
Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.