Senior Software Development Engineer In Test Jobs in Ontario

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One of Canada’s Most Trusted Investment Brands. 

At Picton Mahoney Asset Management (PICTON Investments), being alternative isn’t just what we do—it’s who we are.

Founded by industry pioneer David Picton, we’ve spent 20 years challenging conventional wisdom and redefining the investing landscape. As one of Canada’s most trusted investment brands, we are proudly independent—privately run, 100% employee-owned, and deeply committed to delivering results for our clients. 

Thinking Alternatively is in Our DNA

With a team of 233 bold thinkers—one-third dedicated solely to investment management—we are specialists, not generalists. Managing over $20 billion (August 31, 2026) for institutional and retail clients, we navigate markets with conviction, resilience, and a forward-thinking approach.

We’re more than investors — we’re innovators. We challenge traditional investment mindsets, constantly pushing the boundaries to achieve our mission: To bring greater certainty to investors.  

Our success is built on four guiding principles: 

• Treat investors’ money like our own. 

• Redefine the way investors invest. 

• Be human—always approachable. 
• Succeed together, one investment at a time. 
  

These aren’t just words—they define how we think, how we invest, and how we work.
 

Now, we’re entering our next chapter. We’re transforming our brand and reshaping the way the world invests. If you think alternatively, embrace an entrepreneurial spirit, and thrive in a dynamic, bureaucracy-free environment, join us and be part of what’s next. 

Thriving in Our Entrepreneurial Culture 

At PICTON Investments, you’ll thrive in our creative and dynamic workplace, where collaboration and support are at the core of everything we do. At our firm, you’ll have the opportunity to take on significant responsibilities, work in a flexible environment, and tackle challenging projects from the outset. Our culture is designed for ambitious professionals who want to make an immediate impact while continuing to push boundaries and achieve our greater mission. You’ll be empowered with a high level of responsibility, trust, and flexibility, providing an exciting and creative space for you to help reshape how the world views alternative investments. With competitive total rewards, performance-based bonuses, and a clear path for career growth, you’ll have everything you need to develop both now and over the longer term.

The Opportunity

We are seeking a highly motivated and experienced Software Development Engineer in Test (SDET)  to join our engineering team and play a crucial role in ensuring the quality and reliability of our applications. You will be responsible for designing, developing, and executing comprehensive test strategies, both manual and automated, to deliver a seamless user experience. This role requires a strong understanding of software testing methodologies and a passion for finding and resolving issues before they reach our customers.

You’ll have the opportunity to learn and lead:

• Develop and execute comprehensive test plans and test cases for our application, covering both functional and non-functional requirements.
• Design and implement automated test suites using appropriate frameworks and tools. This includes building our test automation framework from scratch.
• Perform manual testing, including exploratory testing, regression testing, and usability testing.
• Conduct API testing to ensure the proper functioning of our backend services.
• Develop and maintain end-to-end (E2E) tests to validate critical user flows.
• Collaborate closely with developers, product managers, and other stakeholders to understand requirements and provide feedback 1 on product quality.  
• Identify, document, and track defects using a bug tracking system.
• Analyze test results and provide detailed reports on test coverage and quality metrics.
• Proactively identify areas for improvement in our testing processes and contribute to the overall quality of our product.
• Research and evaluate new testing tools and technologies to improve our testing capabilities.
  

What we’re looking for

• 7+ years of experience in software quality assurance.
• Proven experience in both manual and automated testing of web applications.
• Strong understanding of software testing methodologies and best practices.
• Hands-on experience with API testing tools (e.g., Postman, REST Assured).
• Proficiency in end to end (E2E) test automation framework such as Playwright
• Experience building test automation frameworks from scratch.
• Proficiency in at least one programming language; TypeScript preferred. 
• Experience with front-end technologies (React) and back-end technologies (NestJS) is highly desirable.

Nice to Have: 

• Experience with specific testing tools relevant to React and NestJS applications.
• Experience with performance and load testing.
• Experience with security testing.
• Experience with CI/CD integration in Azure DevOps.

At PICTON Investments, we take pride in enhancing our employees' experiences through a comprehensive suite of exceptional perks and programs. Our benefits include corporate fitness reimbursement and discounts, VersaFi memberships (formerly Women in Capital Markets), Picton investment counseling and portfolio management services, volunteer and charitable donation matching, maternity and parental leave top-up, recognition awards, semi-annual performance bonuses, a generous annual vacation entitlement (minimum of 15 days per year), training and development reimbursement, extensive health and dental benefits, a healthcare spending account, and more.

These offerings are designed to support your career growth, well-being, and overall success. Join us and thrive in an environment that values and invests in you!

PICTON Investments is committed to providing an equitable and fair work environment for everyone and all hiring and other personnel actions will be taken without regard to race, colour, creed, religion, sex, disability, gender identity, gender expression, family status, age, language or national origin. If you require an accommodation at any point in time throughout the application and hiring process, please contact Human Resources at (416) 955-4108 or at accessibility@pictoninvestments.com.

PICTON Investments does not accept unsolicited resumes, emails, calls, or any other form of communication from third-party recruitment agencies. Any unsolicited outreach, including commercial electronic messages, will neither be acknowledged nor considered.

Please note: We use AI-assisted tools to support parts of our recruitment process, including summarizing interview notes and aligning candidate profiles with job requirements. All decisions are made by our hiring team.