CI&T

Mid/Senior Fullstack Developer – .NET, React

CI&T

full-time

Posted on:

Location Type: Hybrid

Location: Campinas • Brazil

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Job Level

Senior

Tech Stack

ASP.NETAzureCloudDockerEntity FrameworkJavaScriptJestMicroservices.NETNoSQLReactReduxSDLCSQLTypeScriptVault

About the role

  • Develop and maintain UI components for the Callisto platform using React and TypeScript
  • Build and refactor C#/.NET Core backend APIs and microservices
  • Implement receipt processing workflows for API-based and non-API registries
  • Design and optimize database schemas in Azure SQL and Cosmos DB
  • Integrate with ION Carbon Zero platform APIs for receipt and parcel management
  • Connect to operational databases and data warehouses to synchronize trade data
  • Build middleware integrations using Azure Logic Apps and Azure Function Apps
  • Implement secure API authentication and authorization patterns
  • Participate in knowledge transfer sessions with the transitioning development team
  • Write comprehensive unit and integration tests with high code coverage
  • Optimize application performance and scalability for high-volume processing
  • Follow SDLC best practices, code review standards, and documentation requirements
  • Collaborate with trade operations stakeholders to understand business requirements
  • Support production deployments and troubleshoot issues as needed

Requirements

  • 5+ years of full-stack development experience with .NET and React
  • Backend development:
  • C#, .NET Core / .NET 6+
  • ASP.NET Core
  • RESTful API design and development
  • Microservices architecture patterns
  • Entity Framework Core or Dapper
  • LINQ and async/await patterns
  • Dependency injection and IoC containers
  • Front-end development:
  • React 18+, React Hooks, Context API
  • TypeScript, JavaScript (ES6+)
  • Modern CSS, CSS-in-JS, or CSS Modules
  • State management (Redux, Zustand, or similar)
  • Responsive web design principles
  • Database:
  • Azure SQL Server, T-SQL
  • Cosmos DB (NoSQL)
  • Database design, optimization, and indexing
  • Complex queries and stored procedures
  • Cloud & DevOps:
  • Microsoft Azure (App Services, Function Apps, Azure Storage, Key Vault)
  • CI/CD pipelines (Azure Pipelines, GitHub Actions)
  • Git / GitHub for source control
  • Docker containerization (preferred)
  • Testing:
  • Unit testing (xUnit, NUnit, MSTest)
  • Integration testing
  • Front-end testing (Jest, React Testing Library)
Benefits
  • Health and dental insurance
  • Meal and grocery allowance
  • Childcare assistance
  • Extended parental leave
  • Partnerships with gyms and health and wellness professionals via Wellhub (Gympass) and TotalPass
  • Profit sharing (PLR)
  • Life insurance
  • Continuous learning platform (CI&T University)
  • Employee discount club
  • Free online platform dedicated to promoting physical and mental health and wellbeing
  • Pregnancy and responsible parenthood course
  • Partnerships with online course platforms
  • Language learning platform
  • And many more
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
C#.NET Core.NET 6+ASP.NET CoreRESTful APIMicroservicesEntity Framework CoreLINQTypeScriptReact
Soft Skills
collaborationknowledge transfertroubleshootingcommunicationproblem-solving