C# Fullstack developer (React.JS)

Iris Software Inc.; Mississauga; Hybrid; CAD 110,000 - 150,000; Full time

Job summary

Iris Software Inc.'s client, a leading multinational investment banking and financial services firm, seeks a Sr. C# Fullstack (React.Js) developer for a long-term opportunity in Mississauga, ON. This hybrid role requires on-site presence four days a week with strong backend and frontend responsibilities.

You will design scalable backend services using .NET Core / C#, build robust APIs, and deliver responsive interfaces in React, leveraging Kafka for event-driven communication.

Qualifications

• NET Core / C# and Web API experience required.
• Event-driven architecture and microservices experience.
• Kafka: producers/consumers, topics/partitions, stream processing.
• React frontend with TypeScript and REST API integration.

Skills

.NET Core / C#

ASP.NET Core

Web API

Microservices

Kafka

React

TypeScript

REST API integration

Job description

Iris's client, one of the world's largest multinational Investment banking and financial services corporations, is looking to hire a Sr. C# Fullstack (React.Js) developer for a long-term opportunity.

Location: Mississauga, ON (Hybrid Onsite - 4 days a week office)

Seeking a Full-Stack .NET Developer with strong event-driven architecture experience to design and build scalable backend services using Apache Kafka, develop robust APIs with .NET Core / C#, and deliver responsive user interfaces using React.

Key Skills

• .NET: Strong hands-on experience with .NET Core / C#, ASP.NET Core, Web API, and microservices architecture
• Kafka: Deep expertise in Apache/Confluent Kafka, event-driven design, producers/consumers, topics, partitions, and stream processing
• React: Solid experience building responsive UIs with React, TypeScript, REST API integration, and modern frontend tooling