Intermediate and Senior Full stack developers (.Net, React & Azure) - Application Modernization

We're seekingtwo Full Stack Developers to help rewrite a business-critical enterprise application from the ground up. you will help transform a 20-year-old legacy C# application into a modern cloud-based platform using .NET, React, TypeScript, and Azure .

1 year contract with strong possibility for extension and you must be willing to be in the office 5 days a week.

Working alongside a collaborative development team, you'll use up-to-date engineering practices—including AI-assisted software development with Claude—while contributing to the team's evolving Agile development approach.

The client is building a team with complementary strengths, so we're more interested in technical capability, curiosity, collaboration, and attitude than a specific number of years of experience.

Must have:

- Experience building modern web applications using React and TypeScript
- Experience developing applications in Microsoft Azure
- Experience designing and developing REST APIs and backend services
- Experience working with SQL databases

Nice to have:





- Experience modernizing or rewriting legacy applications
- Experience building cloud-native applications
- Experience with Blazor
- Experience with Domain-Driven Design (DDD) or CQRS
- Azure cloud certification (Developer, Architect, or Cloud Engineering)

What you will be doing:

- Help rewrite a 20-year-old enterprise application using modern development practices and technologies.
- Design, develop, test, and support full stack applications using .NET, React, TypeScript, and Azure.
- Build scalable APIs and cloud-native application components.
- Collaborate with developers, architects, and business stakeholders to design technical solutions.
- Participate in code reviews, iterative planning, and continuous improvement as the team evolves its Agile development practices.
- Use Claude and other modern development tools to enhance productivity and software quality

Disclaimer: AI may be used in evaluating candidates. This posting is for an existing vacancy.

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📌 Intermediate and Senior Full stack developers (.Net, React & Azure) - Application Modernization (Calgary)
🏢 S.i. Systems
📍 Calgary