Java Backend Developer

Job Type: Full-Time, Permanent

About the Role

We are seeking a highly skilled Senior Java Backend Developer to join our Fixed Income eTrading Technology team in Mississauga, Ontario. This role offers an exciting opportunity to work on mission-critical, high-performance electronic trading platforms that support one of the industry's leading Rates eTrading businesses.

As part of a globally distributed technology team, you will design, develop, and enhance next-generation trading applications that enable real-time pricing, market making, risk management, and electronic trade execution. You will collaborate closely with Traders, Sales, Quantitative Analysts, and global technology teams to deliver innovative, low-latency solutions that drive business growth and maintain a competitive advantage in the financial markets.

Key Responsibilities

Application Development & Design

• Design, develop, and maintain high-performance backend applications supporting Fixed Income and Rates eTrading platforms.
• Build scalable, resilient, and low-latency solutions using Core Java and modern enterprise technologies.
• Participate in architectural discussions and contribute to strategic technology initiatives.
• Drive engineering excellence by promoting software design best practices, code quality, and maintainability.
• Work directly with Traders, Sales teams, and Quantitative Analysts to understand business requirements and translate them into technical solutions.
• Enhance trading workflows, pricing engines, execution systems, and risk management applications.
• Improve platform performance, reliability, scalability, and operational efficiency.

Performance Optimization & Support

• Troubleshoot complex production issues involving performance, concurrency, and scalability.
• Optimize system throughput and latency in mission-critical trading environments.
• Provide third-level production support during trading hours when required.
• Collaborate with support and development teams globally to resolve issues and deliver enhancements.

Quality Engineering

• Champion automated testing, CI/CD, and DevOps best practices.
• Improve test automation coverage and streamline User Acceptance Testing (UAT) processes.
• Participate in code reviews and mentor junior developers.

Required Qualifications

Technical Skills

• 7+ years of hands‑on experience in server‑side Core Java development.
• Strong expertise in:
  • Java
  • Spring Framework
  • Spring Boot
  • Spring MVC
  • Multi‑threading and concurrent programming
• Strong knowledge of Relational Database Management Systems (RDBMS).
• Solid understanding of:
  • Data Structures
  • Algorithms
  • Design Patterns
  • Object‑Oriented Programming
• Experience with:
  • Test‑Driven Development (TDD)

Software Engineering

• Strong architectural and design skills.
• Experience building scalable enterprise applications.
• Ability to troubleshoot and optimize high‑performance systems.
• Strong understanding of distributed systems and microservices architectures.

Preferred Qualifications

• Experience developing Front Office trading systems within investment banking or capital markets environments.
• Knowledge of Fixed Income products including:
  • Repos
  • U.S. Treasuries
  • Interest Rate Swaps
  • Electronic Trading Workflows
• Experience working with:
  • REST APIs
  • JSON
  • XML
• Experience with:
  • GitHub
  • Jira
  • SonarQube
  • TeamCity
  • IntelliJ IDEA
  • Gradle
• Experience with:
  • KDB+
  • ION Trading Platform
• Exposure to AI‑assisted development tools such as:
  • Devin

Education

• Bachelor's Degree in Computer Science, Software Engineering, Information Technology, or related discipline.
• Master's Degree is considered an asset.
• Excellent verbal and written communication skills.
• Ability to interact directly with front‑office business users and stakeholders.
• Strong analytical and problem‑solving capabilities.
• Excellent organizational and planning skills.
• Self‑motivated with a passion for continuous learning and innovation.
• Ability to thrive in a fast‑paced, global trading environment.
• Strong collaboration and teamwork skills.
• Experience participating in the full software development life cycle.
• Ability to mentor team members and elevate engineering standards.

What You'll Gain

• Opportunity to work on industry‑leading electronic trading platforms.
• Exposure to Front Office Trading, Fixed Income Markets, and Derivatives Trading.
• Experience building low‑latency, high‑performance financial systems.
• Collaboration with global teams across London, New York, Paris, Mississauga, Shanghai, Sydney, and Tokyo.
• Professional growth within a cutting‑edge technology and financial markets environment.

Equal Opportunity Employer

We are an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

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