Senior Dotnet Developer

Toronto, ON
On-site
Posted Oct 23, 2026
1 position

Opens LinkedIn

Employment type: Contract
Experience level: Senior · 5+ years
Posting language: English
Working hours: 40 hours per week
Seniority: Mid-Senior level
Application method: Direct apply is available

Job summary

Design, develop, and maintain scalable .NET backend applications, APIs, microservices, and React interfaces, while optimizing SQL Server data solutions and supporting cloud deployments. Troubleshoot production issues, improve performance and security, and provide technical leadership through code reviews, mentoring, architecture discussions, and exploration of generative AI solutions.

Job details

Iris's Fortune 100 direct client is looking for Senior .Net Developer. Please find below Job description and share me your updated resume at Saurav.upadhyay@irissoftware.com . Position: Senior .Net Developer Location: Toronto ON Design, develop, and maintain scalable backend applications using .NET Core, C#, and ASP.NET Core. Build and enhance RESTful APIs, web services, and microservices to support enterprise applications. Develop responsive and user-friendly web interfaces using React.js and modern front-end development practices. Work with SQL Server and relational databases to design schemas, optimize queries, and ensure data integrity. Implement object-oriented design principles, design patterns, and efficient data structures to deliver high-quality solutions. Collaborate with cross-functional teams to gather requirements, design technical solutions, and drive successful project delivery. Develop cloud-ready applications and support deployments on Azure or other cloud platforms, leveraging CI/CD and DevOps practices. Troubleshoot production issues, optimize application performance, and resolve code quality, security, and vulnerability concerns. Provide technical leadership, conduct code reviews, mentor team members, and contribute to architecture discussions. Explore and implement GenAI-powered solutions to improve application capabilities, automation, and user experience. About Iris Software Inc. With 4,000+ associates and offices in India, U.S.A. and Canada, Iris Software delivers technology services and solutions that help clients complete fast, far-reaching digital transformations and achieve their business goals. A strategic partner to Fortune 500 and other top companies in financial services and many other industries, Iris provides a value-driven approach - a unique blend of highly-skilled specialists, software engineering expertise, cutting-edge technology, and flexible engagement models. High customer satisfaction has translated into long-standing relationships and preferred-partner status with many of our clients, who rely on our 30+ years of technical and domain expertise to future-proof their enterprises. Associates of Iris work on mission-critical applications supported by a workplace culture that has won numerous awards in the last few years, including Certified Great Place to Work in India; Top 25 GPW in IT & IT-BPM; Ambition Box Best Place to Work, #3 in IT/ITES; and Top Workplace NJ-USA.

What you’ll do

Requirements

The role calls for senior-level experience developing enterprise applications with .NET Core, C#, ASP.NET Core, React.js, and SQL Server, applying object-oriented design and software design patterns. It also involves cloud and DevOps practices, production troubleshooting, security and performance improvements, and technical leadership; no specific education requirement is stated.