Senior C++ and Python Developer - Trading Systems

Job Title: Senior C++ and Python Developer – Trading Systems

Location: Toronto, ON

Work Model: Hybrid (3 Days WFO)

Duration: 6–12 Months

Experience Required: 10+ Years

Role Overview:

We are seeking a Lead Engineer with strong experience in capital markets and trading systems to design, develop, and maintain high-performance software solutions supporting multi-asset trading activities. The role involves close collaboration with trading, operations, and technology teams to build scalable, resilient, and cloud-native systems aligned with long-term enterprise architecture strategies.

The ideal candidate will bring deep technical expertise in C++, Python, SQL, and AWS, along with strong understanding of trading workflows across asset classes including equities, fixed income, derivatives, OTC, futures, and FX.

Key Responsibilities:

System Design & Development

• Design, architect, and develop robust software solutions including server-side enterprise systems, event-driven microservices, APIs, and purpose-built GUIs.

• Ensure solutions are scalable, maintainable, resilient, and observable, aligned with enterprise architecture standards.

• Apply cloud-native design principles using AWS across all development initiatives.

Trading Systems & Business Collaboration

• Work closely with trading professionals, operations, and technology teams to support trade lifecycle processes across multiple asset classes.

• Develop solutions supporting trading activities in equities, fixed income, derivatives, OTC instruments, futures, and FX.

• Ensure systems align with business requirements and trading workflows.

Software Engineering & Quality Ownership

• Maintain and enhance existing trading applications supporting critical business functions.

• Own end-to-end software quality including unit, integration, and regression testing strategies.

• Define scope, manage execution, and proactively mitigate technical and delivery risks.

• Ensure code quality, system stability, and performance are continuously maintained.

Production Support & Reliability

• Provide L1 support for business-critical trading systems.

• Ensure timely issue resolution in live trading environments where system delays have financial impact.

• Support incident investigation and root cause analysis.

Collaboration, Leadership & Mentoring

• Collaborate with cross-functional engineering and business teams.

• Mentor and guide junior and mid-level engineers.

• Provide knowledge transfer through documentation, demos, and walkthroughs.

• Demonstrate adaptability in solving complex and evolving technical challenges.

Required Qualifications & Skills:

Core Technical Skills

• 10+ years of software engineering experience in enterprise environments.

• Strong hands-on experience in C++ with ability to debug complex systems.

• Strong proficiency in Python with experience in capital markets or financial systems.

• Strong SQL knowledge including joins, aggregations, indexing, and query optimization.

• Experience designing and architecting large-scale distributed systems.

Capital Markets Domain

• Strong experience in capital markets with understanding of trading workflows.

• Experience across asset classes including:

• Equities
  

• Fixed Income
  

• Derivatives
  

• OTC products
  

• FX
  

System Design & Architecture

• Experience designing enterprise-grade systems with focus on:

• Event-driven architecture
  

• Microservices
  

• API-based systems
  

  • Strong understanding of software design patterns and clean code principles.
  

Cloud & DevOps

• Strong experience with AWS cloud services.

• Hands-on experience with DevOps practices including:

• CI/CD pipelines
  

• Docker and Kubernetes
  

• Infrastructure as Code (IaC)
  

• Automated deployment strategies
  

Additional Skills (Preferred)

• Experience with FIX protocol (strong advantage).

• Exposure to AI tools and Large Language Models (LLMs).

• Experience in trading or financial services environments.

Professional Skills:

• Strong analytical and problem-solving abilities.

• Ability to take end-to-end ownership of deliverables.

• Strong communication and stakeholder collaboration skills.

• Ability to work in high-pressure, mission-critical environments.

• Commitment to high performance, integrity, and engineering excellence.

Keywords:

• C++

• Python

• SQL

• AWS

• Capital Markets

• Trading Systems

• Equities

• Fixed Income

• Derivatives

• FX

• OTC

• Event-Driven Architecture

• Microservices

• FIX Protocol

• CI/CD

• Kubernetes

• Docker

• Infrastructure as Code

• LLM / AI Tools

Experience Required: 10+ Years