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Added 2 hours ago
Senior Data Solutions Engineer
HOOPP (Healthcare of Ontario Pension Plan)
Toronto, ON
$103,000 to $153,000 CAD / year
Full-time
5+ years of professional software development experience using languages such as Java, Python, C#, or C++.
Added 2 hours ago
AVP Full Stack Java/Angular Developer
Citi
Mississauga, ON
Full-time
Very Strong Java and Spring Boot Development Skills.
Added 2 hours ago
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Victoria, BC
Full-time
Proficiency in Application Development code like Python, C#, R or Java
Added 2 hours ago
Senior DevOps Engineer
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Richmond, BC · Vancouver, BC · CAN - Richmond, Canada
Full-time
Strong knowledge in back-end programming languages (ie. Java, Python, Node.js)
Added 3 hours ago
Senior Platform Engineer – RPA & Automation : Toronto, ON : Hybrid : Full time
AceStack
Toronto, ON
Full-time
Strong SDLC practice and programming languages (Python, Java, Node.js)
Added 3 hours ago
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Full-time
Proficiency in Application Development code like Python, C#, R or Java
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WiSE Winter 2027 Co-op: Business and Technology Consultant (Undergraduate Co-op)
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$18 to $32 CAD / hour
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Added 3 hours ago
Winter 2027 Co-op: Business and Technology Consultant (Undergraduate Co-op)
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$18 to $32 CAD / hour
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Added 3 hours ago
CyberSecurity Specialist
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Toronto, ON · North York, ON
Contract
Strong development skills in Python (most important), along with Java, Node.js, Go, and C/C++
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RPA UiPath Platform Engineer - AI Agentic
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Proficient with Typescript, Java, Python, YAML, NPM, Maven, Gradle, Docker
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Added 4 hours ago
Senior Database Engineer (Snowflake)
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Full-time
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Added 5 hours ago
Cyber Security Specialist
Themesoft Inc.
Toronto, ON · North York, ON
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Strong hands-on software development skills, particularly Python, Java, Node, Go, C/C++ with experience in additional modern programming languages.
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Added 5 hours ago
Security Researcher Engineer
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Toronto, ON
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- Strong hands-on software development skills, particularly Python, Java, Node, Go, C/C++ with experience in additional modern programming languages.
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CyberSecurity Specialist
Themesoft Inc.
Toronto, ON · North York, ON
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Strong hands-on software development skills, particularly Python, Java, Node, Go, C/C++ with experience in additional modern programming languages.
Added 6 hours ago
Junior QA Automation Engineer
Robert Half
Toronto, ON · North York, ON
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Experience or working knowledge of JavaScript, TypeScript, Python, or Java for test automation purposes.
Added 6 hours ago
Technology - Brokerage Engineering - Principal Software Engineer
Questrade Financial Group
Toronto, ON
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…
Added 8 hours ago
Lead Full Stack Developer
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Toronto, ON
Full-time
At its core, this role requires excellent problem-solving skills and C#/.Net, Java, Python and full stack coding capability. This role will need to effectively communicate, collaborate, and…
Added 11 hours ago
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Toronto, ON
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Strong proficiency in at least one primary language: Python, Java, JavaScript, or .NET
Added 14 hours ago
Software Test Developer Assistant Vice President
Citi
Mississauga, ON
Full-time
3+ years experience with Java, Python, Kubernetes, SQL
Added 15 hours ago
Senior Software Engineer
Microsoft
Vancouver, BC
Full-time
…coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent…
Added 15 hours ago
Sr. Automation QE
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Toronto, ON
$90,000 to $110,000 CAD / year
Full-time
Strong proficiency in Java, Python, or JavaScript.

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

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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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