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Added 11 mins ago
(CONTRACT) Professional Sr, Engineering - Structures Design Integrator
Bombardier
Montreal, QC
Full-time
Lead complex, multi-zone or multi-system design activities and define coherent technical approaches.
Added 11 mins ago
(Contract) Professional, Engineering - Structures Design Integrator
Bombardier
Montreal, QC
Full-time
As a Professional 3, Engineering - Structures Design Integrator, you will lead significant work packages, resolve complex integration issues, and coordinate multidisciplinary contributors.…
Added 11 mins ago
Crypto/Blockchain Architect
Iris Software Inc.
Toronto, ON · Greater Toronto Area, Canada
Contract
We are seeking a highly experienced Full Stack Architect specializing in digital assets and tokenization to lead enterprise architecture, solution strategy, and governance for…
Added 11 mins ago
Mechanical Design Engineer
Daedal Systems
Toronto, ON
$90,000 to $130,000 CAD / year
Full-time
In this role, you will own the physical packaging of precision instruments, rapidly prototype experimental hardware, and lead the mechanical design and setup of our core testing laboratory.
Added 11 mins ago
Senior Director, Corporate compensation and programs delivery
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Montreal, QC
Full-time
Lead the global ESPP platform for a program spanning multiple countries on all continents. This includes overseeing vendor relationships, the proper governance framework that allows for…
Added 13 mins ago
Senior Land Development Manager
Mattamy Homes
Ottawa, ON
Full-time
…assumptions, budgets and schedules. The incumbent will mentor and lead the Land Development team to ensure quality, engagement, accountability and professional growth, while striving to…
Added 28 mins ago
Site Reliability Engineer (Adobe Experience Mgr)
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Added 42 mins ago
Principal Combat Systems Engineer
Babcock Canada Inc.
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Added 42 mins ago
Pharmacy Assistant
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…healthcare centres in the world. As innovators in child health, we lead and partner to improve the health of children through the integration of healthcare, leading-edge research and…
Added 42 mins ago
IT Applications Manager
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Full-time
Lead and manage teams, providing guidance, support and direction during critical times
Added 42 mins ago
Concepteur Structurale / Structural Designer
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Contract
Servir d'autorité technique disciplinaire pour les questions d'intégration les plus complexes ou à fort impact.
Added 42 mins ago
Intégrateur De Systèmes D'installation
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Dorval, QC
Contract
Systems Installation Integrator will lead significant work packages, resolve complex integration issues, and coordinate multidisciplinary contributors. Work will focus on the physical…
Added 42 mins ago
Business Analyst - Regulatory Affairs and Delivery Modernization
Real Estate Council of Ontario
Toronto, ON · Etobicoke, ON
$83,900 to $104,888 CAD / year
Full-time
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Added 42 mins ago
Engineering Manager, Okta Access Gateway
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Toronto, ON
$168,000 to $231,000 CAD / year
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Added 42 mins ago
Team Leader, Real Property Management (Real Property Spatial Services (BIM/GIS))
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Added 42 mins ago
IT Project Manager
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Added 43 mins ago
Business Systems - Test Automation Lead
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Build and lead a pragmatic test automation and performance assurance program that improves the reliability of enterprise systems while reducing the cost and effort of repetitive testing.…
Added 43 mins ago
Director of Operations
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Toronto, ON
Full-time
Reporting to the COO, the Director of Operations will lead two things at once, company-wide operations and planning, and leadership of our Customer Experience organization. CE brings two…
Added 43 mins ago
Services and Solutions Sales Executive/Spécialiste de la vente de services et solutions (SSE) (Edmonton)
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AB · Edmonton, Alberta
Full-time
Works directly with Branch Sales Managers, BSC Team Lead and Solution Architect to promote Solutions and Professional Services offerings, driven by Key Performance Indicators and KMBS…
Added 43 mins ago
Senior Presales Engineer
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Added 43 mins ago
Soil Health Specialist
Ontario Soil and Crop Improvement Association
Guelph, ON
Full-time · Temporary
…research portfolio. The incumbent serves as OSCIA's technical lead for soil health monitoring and assessment activities within the On-Farm Applied Research and Monitoring (ONFARM) Program…
Added 58 mins ago
Commercial Supply Chain and Procurement Manager
Ulteig
Burlington, ON
Full-time
Ulteig is seeking a Commercial Supply Chain & Procurement Manager to join our Automation, Integration & System Protection (AISP) team. This is a newly created, leadership role responsible…
Added 58 mins ago
Audit Manager I, Global Finance (1166)
TD
Toronto, ON
Full-time
May lead moderately complex audits and have responsibility for completion of the audit.
Added 58 mins ago
Data Architect
TD
Toronto, ON
Full-time
Lead architectural reviews, spike investigations, and critical platform design decisions.
Added 58 mins ago
Software Engineer II
TD
Toronto, ON
Full-time
Document and verify system components, applications, system infrastructure, security, integration, operability and engineering related architecture designs associated with a program or…

Questrade Financial Group

Technology - Brokerage Engineering - Principal Software Engineer

Toronto, ON, Canada

Pay: Base salary range: $130,000 - $170,000
Experience: 8+ years of professional software development experience, with a proven track record of shipping successful, large-scale full-stack applications.
Posting language: English
Posted: Sep 25, 2026

Apply About employer

Applications open in a new tab.

Original job description

Questrade Financial Group (QFG), through its companies - Questrade, Questbank, Questrade Wealth Management, Community Trust Company, Zolo, and Flexiti, provides securities and foreign currency investment, professionally managed investment portfolios, mortgages, real estate services, financial services and more. We use cutting-edge technology to help Canadians become much more financially successful and secure.

At QFG, we combine human-centric collaboration with AI-driven innovation to redefine financial services. The ideal candidate will be a catalyst for change, using AI to transform and deliver unparalleled customer experiences and shaping a future where AI empowers our teams to do their best work.

Join our diverse, inclusive, and hybrid workplace to unleash your creativity and nurture your curiosity without limits. If you share this sense of infinite possibility, come shape your future at QFG.

What’s in it for you as an employee of QFG?

Health & wellbeing resources and programs
Paid vacation, personal, and sick days for work-life balance
Competitive compensation and benefits packages
Work-life balance in a hybrid environment with at least 3 days in office
Career growth and development opportunities
Opportunities to contribute to community causes
Work with diverse team members in an inclusive and collaborative environment

This job posting is for an existing vacancy

We’re looking for our next Principal Software Engineer. Could It Be You?

The Principal Software Engineer is a hands-on technical leader who owns the design and delivery of complex systems within the squad’s portfolio. You will act as a force-multiplier for your team, leading the execution of highly complex engineering tasks and proactively expanding your technical scope to drive broader impact across the platform.

Leveraging your expert knowledge of C# .NET, you will drive technical excellence within your domain. You will support the Engineering Team Lead by setting high standards for innovation, mentoring engineers, and making key architectural decisions that ensure our digital investing platforms are scalable, performant, and robust.

Need more details? Keep reading…

In this role, responsibilities include but are not limited to:

Key Responsibilities

Technical Delivery & Ownership: Maintain ownership of systems within the squad’s portfolio, proactively expanding scope to drive broader technical impact. Lead the delivery of highly complex tasks, ensuring exceptional quality within expected timelines.
Architecture & Solution Design: Propose engineering solutions for highly complex systems within your domain. Collaborate with technical stakeholders on prototyping and research to influence the definition of solution architecture.
Leadership & Mentorship: Act as a technical leader within the team, performing highly complex engineering tasks while supporting the Engineering Team Lead and other engineers on implementation details. Mentor team members by reviewing code, sharing expertise, and guiding them through complex technical challenges.
Optimization & Troubleshooting: Troubleshoot and optimize solutions for highly complex issues. Apply expert knowledge to resolve performance bottlenecks in real-time data streaming, database queries, and client-side rendering.
Quality Assurance: Define and execute complex test plans, including unit, integration, and performance tests. Ensure the team follows industry best practices for quality and automation.
Innovation: Stay up-to-date on industry trends and evaluate new technologies. Make decisions on localized system choices (e.g., library selection, code refactoring) within established frameworks and approved technologies.
Collaboration & Communication: Collaborate closely with cross-functional teams (Product, Design) to translate business requirements into technical solutions. Clearly explain complex technical concepts to both technical and non-technical teammates. Write clear documentation and design proposals.

So are YOU our next Principal Software Engineer? You are if you…

BS or Master’s degree in Computer Science, Information Systems, Systems Engineering, or a related field (or equivalent combination of education and experience).
8+ years of professional software development experience, with a proven track record of shipping successful, large-scale full-stack applications.

Backend Expertise: Deep expertise in C# .NET (or expert-level knowledge in another modern backend language like Java, Go, Python, or Node.js with a willingness to work in .NET). C++ nice to have.
API Design: Proven experience architecting and building scalable RESTful and WebSocket APIs.
Software Design: Deep understanding and application of object-oriented programming (OOP), SOLID principles, and other software design patterns.
Architecture: Mastery of event-driven architecture and message queues (e.g., PubSub, Kafka, RabbitMQ). Expert knowledge of engineering principles and strong knowledge of multiple architectural patterns.
Data & Cloud: Strong experience with SQL and NoSQL databases, as well as major cloud providers (AWS, GCP, or Azure).
Core Frontend: Mastery of JavaScript/TypeScript and modern frontend ecosystems.

Leadership & Soft Skills

Ability to exceptionally perform and lead others on highly complex engineering tasks by applying or researching best solutions.
Proven experience acting as a technical reference and supporting team decision-making.
Strong ability to document technical solutions and lead technical discussions within the team.
Excellent analytical skills to troubleshoot highly complex issues and propose efficient engineering solutions.

Compensation Information:

Base salary range: $130,000 - $170,000
The final compensation package will be commensurate with the successful candidate's experience, skills, and geographic location (Canada). It includes a comprehensive benefits plan and a competitive incentive (bonus) program for Full-Time Permanent roles.

Sounds like you? Click below to apply!

At Questrade Financial Group of Companies, with multiple office locations around the world, we are committed to fostering a diverse, inclusive and accessible work environment. This is an environment where individuals are treated with dignity and respect. Here, the unique skills and experience you bring will be valued. You will be supported and motivated, so that you can harness your unlimited potential. Our team reflects the diversity of the communities we serve and operate in. Having a collaborative and diverse team helps us push boundaries to bring the future of fintech into existence - not only for the benefit of our customers, but for those who build their career with us.

Questrade Financial Group of companies Applicant Tracking System utilizes artificial intelligence (AI) for application screening. The AI system operates on predetermined criteria, with final decisions subject to human review.

Candidates selected for an interview will be contacted directly. If you require accommodation during the recruitment/selection process, please let us know and we will work with you to meet your needs.

Apply About employer

More about this job

Responsibilities

The Principal Software Engineer will lead the design and delivery of complex systems while acting as a technical mentor to the engineering team. They are responsible for driving technical excellence, optimizing system performance, and collaborating with cross-functional teams to translate business requirements into scalable solutions.

Requirements

Candidates must have at least 8 years of professional software development experience with deep expertise in C# .NET and full-stack application development. A degree in Computer Science or a related field is required, along with mastery of modern architectural patterns and cloud technologies.

Skills

C# .NET
Software architecture
API design
RESTful APIs
WebSocket APIs
Event-driven architecture
Message queues
SQL
NoSQL
JavaScript
TypeScript
Cloud computing
Technical leadership
Mentorship
Performance optimization
System design

Benefits

Health and wellbeing resources
Paid vacation
Personal days
Sick days
Competitive compensation
Benefits packages
Career growth and development opportunities

Visa sponsorship

Not detected in the job text

Keywords

C#
.NET
Software Engineering
Fintech
API
RESTful
WebSocket
Event-driven architecture
PubSub
Kafka
RabbitMQ
SQL
NoSQL
AWS
GCP
Azure
JavaScript
TypeScript
Full-stack
Object-oriented programming
SOLID principles
Cloud computing
System design
Performance tuning
Technical leadership
Mentorship
Agile
Brokerage
Investment platforms
Software development

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