# Principal Software Developer at Arcadia in Toronto, Canada…

> Source: https://confidential.careers/job-detail/principal-software-developer-arcadia-toronto

# Principal Software Developer

Arcadia 

** Toronto, Canada ** Full Time ** Technology Jobs ** Canada ** New

[Apply Now](https://confidential.careers/go/13514875) ** Save 

## Job Description

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
- Strong 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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Posted August 10, 2026