[Job - 31359]Sr. Developer FullStack (.Net/React) , Brazil

Другое

• 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.
• We are looking for a  Fullstack Developer  with a strong focus on  frontend development (70%)  and solid backend skills  (30%) , working in a modern tech stack built on  .NET  8,  C# , and React . You will build high-quality, scalable, and maintainable features across the full stack, collaborating closely with product, design, and engineering teams.
• Develop and maintain responsive, performant, and accessible user interfaces  using  React
• Implement  reusable components  following best practices for scalability and maintainability
• Collaborate with UX/UI designers to translate designs into functional features
• Ensure  cross-browser compatibility  and performance optimization
• Write  unit and integration tests  for frontend components
• Develop and maintain  RESTful APIs  and services using  .NET  8 and  C#
• Implement business logic using the  Mediator pattern (MediatR)  for clean and decoupled architecture
• Use  AutoMapper  for efficient object-to-object mapping
• Implement  asynchronous messaging  with  Rebus  and  Azure Service Bus
• Contribute to database design and queries using  PostgreSQL  and  MongoDB
• Write  unit tests  using  xUnit  and generate realistic test data with  Faker (Bogus)
• Create  test doubles and mocks  using  NSubstitute
• Participate in  code reviews  to uphold code quality standards
• Work with  Azure DevOps  for project management, version control, and pipelines
• Follow  GitFlow  branching strategy for organized and release-oriented development
• Contribute to  Azure Pipelines  (CI/CD) using YAML-based configurations
• Solid experience with  React  (hooks, context, state management)
• Proficiency in  JavaScript / TypeScript
• Experience with  component-driven development  and modern frontend architecture patterns
• Experience with  .NET  8  and  C#  for backend development
• Familiarity with  MediatR, AutoMapper , and clean architecture principles
• Experience with  messaging/queueing systems  (Rebus, Azure Service Bus, or equivalent)
• Experience with  PostgreSQL  — relational modeling and query optimization
• Experience with  MongoDB  — document-based modeling and aggregation
• Proficiency with  Entity Framework Core (EF Core)
• xUnit  for unit and integration testing
• NSubstitute  for mocking and test doubles
• Faker / Bogus  for realistic test data generation
• Azure DevOps, Git, GitFlow, Azure Pipelines, Azure Service Bus
• Knowledge of  CQRS  combined with MediatR
• Familiarity with  Docker and containerization
• Exposure to  Azure cloud services  (App Services, Functions)
• Understanding of  Domain-Driven Design (DDD)  principles
• Experience with  micro-frontend architecture
• #LI-AM2