Senior Developer – Fixed Income Trading

Releady; Toronto; Hybrid; CAD 100,000 - 130,000; Full time

Job summary

A financial technology firm is seeking a Senior Developer – Fixed Income Trading to enhance and maintain trading systems. The ideal candidate will have over 7 years of experience in developing high-performance software solutions, particularly in real-time trading. Proficiency in Java, Python, and FIX protocol is essential. The role involves close collaboration with cross-functional teams to innovate and refine complex trading applications. This position offers a hybrid working arrangement based in Toronto.

Qualifications

• 7+ years of hands-on experience developing complex, high-performance distributed software solutions.
• Proven expertise in designing systems for real-time streaming and high-frequency updates.
• Strong FIX protocol experience (mandatory).
• Proficiency with Java, Python, C++, and Oracle databases.
• Strong DevOps and CI/CD practices experience.

Responsibilities

• Design, build, and enhance complex software solutions for Fixed Income trading.
• Provide technical leadership on architecture and integration patterns.
• Rapidly iterate functionality based on trader feedback.
• Maintain existing trading systems and resolve production issues promptly.
• Develop high-quality documentation including solution diagrams and integration models.

Skills

Java

Python

C++

Linux

FIX protocol

High-performance distributed software

Shell scripting

Git

DevOps practices

CI/CD pipelines

Education

Post-secondary degree in Computer Science, Software Engineering, Information Systems

Tools

Oracle databases

AWS

Trading platforms (Bloomberg TOMS, FIS BondOne, Calypso, WSS)

Job description

OVERVIEW

We are seeking an experienced Senior Developer – Fixed Income Trading with a strong background in building high-performance, real-time trading systems to support large-scale business and technology initiatives across the client’s Capital Markets organization. The successful candidate will collaborate closely with cross-functional partners—including technology, trading, product, and production support teams—to design, develop, and enhance complex front-office trading applications.

This role is ideal for a highly technical, detail-oriented professional who thrives in dynamic environments, can adapt quickly to trader feedback, and is comfortable working with real-time data, FIX integrations, and distributed capital markets systems.

Location: Toronto, ON (Hybrid – remote with occasional onsite meetings at 100 King St W)
Contract Length: 6 Months (Extension or FTE Conversion Possible)
Hours: 9 AM–5 PM EST

RESPONSIBILITIES

• Design, build, and enhance complex software solutions supporting Fixed Income trading workflows.
• Provide technical leadership and contribute innovative ideas on architecture, integration patterns, and system design.
• Rapidly iterate and adjust functionality based on frequent trader and stakeholder feedback.
• Collaborate with developers, business analysts, product managers, and production support teams to deliver both strategic initiatives and tactical enhancements.
• Develop and maintain high-quality documentation, including solution diagrams, trade flows, current/target state architecture, and integration models.
• Maintain and enhance existing trading systems; investigate and resolve production issues in a time-sensitive front-office environment.
• Perform rigorous unit testing and participate in planning and execution of broader QA test suites.
• Partner with internal teams to advance enterprise capabilities related to real-time messaging, application integration, and high-availability trading infrastructure.

QUALIFICATIONS

Must-Have

• 7+ years of hands-on experience developing complex, high-performance distributed software solutions.
• Proven expertise designing systems that support real-time streaming, high-frequency updates, and integrations with internal/external services (TCP, HTTP, MQ, FIX).
• Strong FIX protocol experience (mandatory).
• Proficiency with Java, Python, C++, and Oracle databases.
• Strong experience with Linux, shell scripting, Git, DevOps practices, CI/CD pipelines, and troubleshooting in distributed compute environments.
• Experience working in Capital Markets, ideally supporting Fixed Income, Credit, or Rates trading desks.
• Familiarity with enterprise trading platforms such as Bloomberg TOMS, FIS BondOne, Calypso, or WSS (asset).
• Effective communicator able to partner with senior business stakeholders and cross-functional teams.
• Excellent written and verbal communication skills.

Nice-To-Have

• Experience with AWS or cloud-native development.

EDUCATION

• Post-secondary degree in Computer Science, Software Engineering, Information Systems, or related discipline preferred.

NOTES FOR APPLICANTS

Resumes must clearly highlight previous experience developing front-office trading systems, especially real-time, FIX-connected platforms supporting Fixed Income or other capital markets asset classes. Candidates must be able to confidently speak to the technologies listed on their resume during the technical interview.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or other non-merit factor. We are committed to creating a diverse and inclusive environment for all employees.