Senior Platform Backend Engineer, Cloud‑Native .NET

DSI Recruiting; Toronto; On-site; CAD 120,000 - 160,000; Full time

Job summary

DSI Recruiting supports a client seeking a hands-on Senior Platform Software Engineer (Backend) to build shared cloud-native services and reusable .NET SDKs for a next-generation enterprise platform. The role emphasizes security, API standards, session management, and tenant-aware authorization across domain services, delivering production-grade components and AI-assisted development practices.

Contribute to Azure DevOps pipelines and adopt secure, scalable backend patterns in a fast-paced

Qualifications

• 5+ years of backend engineering experience.
• Strong C#, .NET, ASP.NET Core and secure REST API development.
• Solid knowledge of OAuth 2.0 and OIDC.
• Experience with SQL/relational databases and asynchronous programming.
• Experience with AWS or comparable cloud platforms.
• Ability to contribute to architecture and implement production‑grade components independently.

Skills

C#

ASP.NET Core

OAuth 2.0

SQL Databases

AWS Cloud

CI/CD

Backend Architecture

Security Best Practices

Job description

DSI Recruiting supports a client seeking a hands-on Senior Platform Software Engineer (Backend) to build shared cloud-native services and reusable .NET SDKs for a next-generation enterprise platform. The role emphasizes security, API standards, session management, and tenant-aware authorization across domain services, delivering production-grade components and AI-assisted development practices.

Contribute to Azure DevOps pipelines and adopt secure, scalable backend patterns in a fast-paced