BoomerangFX isn’t just a company— it’s a movement redefining how private pay healthcare practices operate. Recognized as one of North America’s Fastest Growing Tech Companies two years in a row by Deloitte’s Fast 500 program ranking 6th in Canada and 23rd in North America. We are a global leader in practice management software and digital marketing solutions. Our growth trajectory of over 8000% is matched by our ambition to disrupt and dominate the healthcare technology landscape.

With offices across the USA, Canada, UK, Sydney, and India , we’re building a truly global organization and expanding our presence in international markets. This is an exciting chance to join a high-growth company and play a meaningful role in shaping and supporting our continued international growth.

About the Role:

We are seeking a talented and experienced Senior Back-End Developer to join our growing team. The ideal candidate will have robust experience working with .NET , Microsoft Azure , and SQL/Sequence . You will be responsible for building, maintaining, and optimizing the server-side logic, APIs, and database integrations of our SaaS platform.

Key Responsibilities:




Develop, test, and deploy scalable and secure back-end services using .NET (C#)
Design and maintain APIs and database structures to support front-end features
Work with Azure cloud services (App Services, Functions, Blob Storage, etc.)
Ensure high performance and responsiveness to requests from the front end
Collaborate with front-end developers, QA, and product managers in agile sprints
Maintain clean, scalable, and well-documented code
Troubleshoot and optimize application performance, security, and scalability

Required Qualifications:
5+ years of hands-on back-end development experience
Robust proficiency in .NET (C#)
Solid experience with Microsoft Azure services
Expertise in SQL Server and familiarity with Sequence or relational database design
Experience developing RESTful APIs and web services
Understanding of CI/CD pipelines and version control (Git) tags, replaces with `, removes decorative emojis, and retains all protected content exactly as requested.
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📌 Senior Back End Developer Mississauga
🏢 BoomerangFX
📍 Mississauga