Volunteer Java Jobs in Toronto, ON (NOW HIRING)

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.