Director - Sr. QA Engineer - Electronic Trading Systems (PXT)

Work Location:

Toronto, Ontario, Canada

Hours:

37.5

Line of Business:

TD Securities

Pay Details:

$175,000 - $185,000 CAD

TD is committed to providing fair and equitable compensation opportunities to all colleagues. Growth opportunities and skill development are defining features of the colleague experience at TD. Our compensation policies and practices have been designed to allow colleagues to progress through the salary range over time as they progress in their role. The base pay actually offered may vary based upon the candidate's skills and experience, job-related knowledge, geographic location, and other specific business and organizational needs.

As a candidate, you are encouraged to ask compensation related questions and have an open dialogue with your recruiter who can provide you more specific details for this role.

Job Description:

TD Securities offers a wide range of capital markets products and services to corporate, government, and institutional clients who choose us for our innovation, execution, and experience.

With more than 6,500 professionals operating out of 40 cities across the globe, we help clients meet their needs today and prepare for tomorrow. Our services include underwriting and distributing new issues, providing trusted advice and industry-leading insight, extending access to global markets, and delivering integrated transaction banking solutions. In 2023, we acquired Cowen Inc., offering our clients access to a premier U.S. equities business and highly diverse equity research franchise, while growing our strong, diversified investment bank.

We are growth-oriented, people-focused, and community-minded. As a team, we work to deliver value for our clients every day.

We are seeking an experienced Senior QA Engineer to join the Proximity Tactics (PXT) team, a strategic low-latency electronic trading platform supporting direct market access, venue connectivity, market data processing, and intelligent order routing.

The successful candidate will be responsible for validating the quality, reliability, and performance of the platform across venue connectivity, market data handling, order routing, and execution workflows. In addition to hands-on testing, this individual will design and build automated regression test suites and testing frameworks that support continuous delivery of new functionality.

This is a highly technical role requiring strong knowledge of North American electronic trading infrastructure, exchange connectivity, market data, and automated testing practices.

Key Responsibilities

Functional Testing

• Develop and execute test plans for:
  • Exchange and venue connectivity
  • Market data ingestion and normalization
  • Order routing and execution workflows
  • FIX and native exchange protocols
  • Risk controls and order lifecycle management
• Validate correct behavior across:
  • New orders
  • Modifications and cancellations
  • Partial and full fills
  • Rejects and recovery scenarios
• Create comprehensive test scenarios covering normal, edge-case, and failure conditions.
• Participate in feature reviews and provide early feedback on testability and quality risks.

Market Data & Routing Validation

• Verify accuracy and integrity of real-time market data processing.
• Validate routing decisions and execution behavior against defined business logic.
• Test smart routing and market-data-driven execution strategies.
• Analyze exchange and market data logs to identify discrepancies and defects.

Automation & Regression Testing

• Design and maintain automated regression testing frameworks.
• Develop automated test scripts for:
  • Venue certification testing
  • Market data replay testing
  • Order routing validation
  • End-to-end trading workflows
• Integrate automated tests into CI/CD pipelines.
• Build tooling to compare expected versus actual trading system behavior.
• Continuously improve test coverage and reduce manual testing effort.

Performance & Reliability Testing

• Execute performance, stress, and resiliency testing.
• Validate system behavior under high messaging rates and market volatility.
• Analyze latency-sensitive workflows and identify functional bottlenecks.
• Support production readiness and release validation activities.

Collaboration

• Work closely with:
  • Developers
  • Product owners
  • Trading technology teams
  • Infrastructure teams
  • Exchange connectivity specialists
• Participate in defect triage and root-cause analysis.
• Contribute to overall testing strategy and quality processes.

Required Qualifications

Education

• Bachelor's degree in:
  • Computer Science
  • Software Engineering
  • Computer Engineering
  • Mathematics
  • Finance with strong technical background
  • Or equivalent practical experience

Experience

• Minimum 5 years of QA and testing experience in electronic trading systems.
• Experience testing:
  • Equity trading platforms
  • Smart order routers (SOR)
  • Direct Market Access (DMA) systems
  • Exchange connectivity platforms
  • Market data systems

Domain Knowledge

Strong understanding of:

• US and Canadian equity market structure
• Exchange trading venues including:
  • NASDAQ
  • NYSE
  • Cboe
  • TSX
  • Alpha
  • Other major North American venues
• Order lifecycle and execution workflows
• Market data concepts:
  • SIP feeds
  • Direct feeds
  • Level 1 / Level 2 data
  • NBBO
• Market microstructure and order types

Technical Skills

Experience with:

• Automated test framework development
• Python scripting
• Linux environments
• Test automation and regression testing
• Network and protocol troubleshooting
• CI/CD environments

Knowledge of:

• FIX protocol
• Exchange-native protocols (e.g., OUCH)
• TCP/IP networking
• SQL and database validation

Preferred Qualifications

• Experience with low-latency trading systems.
• Experience certifying exchange connectivity.
• Experience testing market data feed handlers.
• Familiarity with packet capture and network-analysis tools.
• Experience working in co-location or proximity-hosted trading environments.
• Exposure to performance benchmarking and latency measurement.
• Knowledge of C++-based trading platforms.

Key Attributes

• Strong analytical and problem-solving skills.
• Detail-oriented with a quality-first mindset.
• Ability to work independently in a fast-paced trading technology environment.
• Strong communication and collaboration skills.
• Passion for automation and continuous improvement.

What Success Looks Like

Within the first year, the successful candidate will:

• Establish comprehensive automated regression coverage for key PXT workflows.
• Reduce manual testing effort through effective automation.
• Successfully validate new venue connectivity and routing features.
• Ensure high-quality releases of market-data-driven routing functionality.
• Become a trusted quality partner for developers and business stakeholders.

This role offers the opportunity to work on a high-performance trading platform at the intersection of exchange connectivity, market data, and low-latency execution.

Who We Are:

TD Securities offers a wide range of capital markets products and services to corporate, government, and institutional clients who choose us for our innovation, execution, and experience. With more than 6,500 professionals operating out of 40 cities across the globe, we strive to make every interaction, product and experience remarkably human and refreshingly simple.  Our services include underwriting and distributing new issues, providing trusted advice and industry-leading insight, extending access to global markets, and delivering integrated transaction banking solutions. In 2023, we acquired Cowen Inc., offering our clients access to a premier U.S. equities business and highly-diverse equity research franchise, while growing our strong, diversified investment bank. 

Together, we are reimagining what banking can be for our clients, colleagues and communities. 

Our Total Rewards Package
Our Total Rewards package reflects the investments we make in our colleagues to help them and their families achieve their financial, physical, and mental well-being goals. Total Rewards at TD includes a base salary, variable compensation, and several other key plans such as health and well-being benefits, savings and retirement programs, paid time off, banking benefits and discounts, career development, and reward and recognition programs. Learn more

Additional Information:
We’re delighted that you’re considering building a career with TD. Through regular development conversations, training programs, and a competitive benefits plan, we’re committed to providing the support our colleagues need to thrive both at work and at home.

Please be advised that this job opportunity is subject to provincial regulation for employment purposes. It is imperative to acknowledge that each province or territory within the jurisdiction of Canada may have its own set of regulations, requirements.

Colleague Development

If you’re interested in a specific career path or are looking to build certain skills, we want to help you succeed. You’ll have regular career, development, and performance conversations with your manager, as well as access to an online learning platform and a variety of mentoring programs to help you unlock future opportunities. 

If you’re passionate about helping clients and building deep, lasting relationships, TD offers diverse career paths where you can grow your expertise and make a meaningful impact.  

We're committed to your success and foster a respectful workplace where diverse perspectives are valued, everyone has fair opportunities to grow, and you can unlock your full potential to achieve your career goals. Here at TD, we hire and develop the best.

Training & Onboarding
We will provide training and onboarding sessions to ensure that you’ve got everything you need to succeed in your new role.

Interview Process 
We’ll reach out to candidates of interest to schedule an interview. We do our best to communicate outcomes to all applicants by email or phone call.

Accommodation
Your accessibility is important to us. Please let us know if you’d like accommodations (including accessible meeting rooms, captioning for virtual interviews, etc.) to help us remove barriers so that you can participate throughout the interview process.

We look forward to hearing from you!

Language Requirement (Quebec only):

Sans Objet