[Job - 32379] Mid-Level Fullstack Developer (.NET / Next.JS), Brazil

At CI&T, we help large enterprises transform the potential of AI into real business impact with AI Deployment, AI-native execution, and tech-integrated business solutions.

With 30 years of experience in technological transformation, we accelerate innovation with expertise in Agentic SDLC, Application modernization, Data & AI, Martech and Business strategy.

We are 8,000 CI&Ters across more than 25 countries, collaborating to build solutions with real impact. AI is already part of how we work, evolve, and innovate every day.

• Work with a C# and .NET backend
• Work with Next.js frontends
• Work in a monorepo (one big project with many parts)

Your main skill should be backend development with C# and .NET. You will also write frontend code, but your strongest area should be the backend.

• →Build and maintain backend services using ASP.NET Core (.NET 8) and Entity Framework Core
• →Create and connect RESTful APIs (following the existing patterns in the project)
• →Write frontend code using Next.js 14, React 18, and TypeScript
• →Connect with reporting and analytics services
• →Talk directly with the client and other teams to understand what they need
• →Learn and follow the project’s code standards and architecture
• →Write tests (unit tests and integration tests) to check if the code works correctly
• →Review other developers’ code and help improve the team’s work
• →Work in an Agile team, delivering finished and tested code regularly

• 3+ years working as a backend developer with C# and .NET
• Experience building and maintaining RESTful APIs
• Knowledge of Entity Framework Core (or similar tools)
• Experience with databases like Azure SQL or SQL Server
• Understanding of dependency injection, SOLID principles, and layered architecture
• Experience with React, TypeScript, and Next.js (willing to work across full-stack)
• Experience with Git and writing tests
• Ability to read and understand large, complex code projects
• Strong communication skills and advanced English level (to work with global clients and teams)

• Experience with Microsoft Azure services (like Azure SQL)
• Knowledge of NoSQL databases (like Azure Cosmos DB)
• Experience with BI/reporting tools (Power BI, Tableau, or similar)
• Experience with application monitoring (Application Insights, Serilog, or similar)
• Experience with monorepo tools (Turborepo, npm workspaces)
• Knowledge of Tailwind CSS or component libraries (shadcn/ui, Radix UI)
• Experience with CI/CD pipelines (Azure DevOps)
• Understanding of authentication (OAuth 2.0, JWT, MSAL)
  
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