Location: Toronto, ON – flexible hybrid, ideally 1 or 2 day per week
Type: Full-Time
Comp: $170–175K + 10% bonus + RRSP + full benefits
A leading financial services organization in the consumer lending and alternative financial services space is hiring a Principal Software Developer to help modernize and scale its core technology platforms.
This is a deeply hands-on backend engineering role focused primarily on C# and .NET. You’ll design and build secure, scalable applications, contribute to system architecture, and help establish strong engineering practices across a complex cloud environment.
The organization is investing significantly in technology modernization, including cloud platforms, microservices, APIs, data capabilities, and customer-facing digital products. You’ll work closely with engineering, architecture, product, QA, and business stakeholders to deliver systems used by more than one million customers annually across Canada and the US.
What You’ll Do
Design, build, and maintain scalable backend applications using C# and .NET
Lead the technical design and implementation of complex software systems
Contribute to application and platform architecture across AWS and Azure
Build and modernize microservices, APIs, and enterprise integrations
Develop secure systems that protect sensitive financial and customer data
Work with SQL and NoSQL databases to support high-volume applications
Improve application performance, reliability, maintainability, and scalability
Support containerized workloads using Docker and Kubernetes
Strengthen CI/CD pipelines, automated testing, and DevOps practices
Write clean, efficient, and testable production code
Conduct code reviews and establish engineering standards and best practices




Troubleshoot complex production issues and drive long-term solutions
Mentor senior and intermediate developers while remaining deeply hands-on
Partner with product, QA, architecture, and business teams to translate requirements into technical solutions
Evaluate emerging technologies and identify opportunities to improve platforms and development processes
What We’re Looking For
12+ years of professional software development experience
Deep hands-on experience with C#, .NET, and backend application development
Experience operating at a Principal, Lead, Staff, or Senior technical level
Strong system design and software architecture capabilities
Experience building microservices, APIs, and distributed applications
Solid cloud experience across AWS and/or Azure
Experience with relational and NoSQL databases
Knowledge of CI/CD, Docker, Kubernetes, and modern DevOps practices
Strong understanding of secure coding, automated testing, and code quality
Experience with unit testing frameworks such as NUnit or MSTest
Ability to influence technical decisions and communicate with both engineering and business stakeholders
Experience mentoring developers and raising engineering standards
Background in financial services, fintech, payments, or consumer lending is an asset
Bachelor’s degree in Computer Science, Software Engineering, or a related field
Why Apply?
Principal-level ownership while remaining deeply involved in the code
Help modernize large-scale financial platforms used by more than one million customers annually
Work across C#/.NET, AWS, Azure, microservices, APIs, and cloud-native technologies
Influence architecture, engineering standards, and technical direction
Flexible hybrid structure, ideally one day per week in Toronto
Competitive compensation, 10% bonus, RRSP, and comprehensive benefits
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📌 Principal Software Developer (Winnipeg)
🏢 Arcadia
📍 Winnipeg