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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