[Job 24699] Sr .NET Developer, Brazil

We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions.With over 7.400 CI&Ters around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality.
Responsibilities
Develop and maintain high-quality C# code across our microservices ecosystemImplement complex business logic for a large company in the food marketManage own priorities and performance to deliver high quality, highly performant solutionsDocumenting your work and contribute to continuous integration/continuous delivery (CI/CD) processesDevelop APIs that facilitate communication between our microservicesImplement messaging patterns for asynchronous communication between servicesIntegrate with external systems and databases while maintaining system integrityEnsure proper error handling and resilience in service communicationsWrite comprehensive unit and integration tests for C# componentsConduct code reviews to maintain code quality and architectural integrityTroubleshoot and resolve complex technical issues across the service ecosystemMentor junior developers in C# best practices and design patternsContribute to technical decision-making and architectural discussions

Requirements
Technical Expertise
5+ years of professional experience with C# and .NET developmentStrong knowledge of .NET Core/5+ and ASP.NET Core Web APIExperience with microservices architecture and distributed systemsProficiency in asynchronous programming patterns in C# (Task, async/await)Advanced C# programming skills including LINQ, generics, and reflectionExperience with dependency injection and inversion of control patternsFamiliarity with ORM frameworks (Entity Framework Core)Knowledge of RESTful API design and implementationExperience with SQL Server and writing efficient queriesUnderstanding of data access patterns and transaction managementKnowledge of database performance optimization techniquesExperience with data serialization formats (JSON, XML)Proficiency in unit testing frameworks (xUnit, NUnit, or MSTest)Experience with mocking frameworks (Moq, NSubstitute)Familiarity with containerization using DockerOur benefits:
-Health and dental insurance-Meal and food allowance-Childcare assistance-Extended paternity leave-Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass;-Profit Sharing and Results Participation (PLR);-Life insurance-Continuous learning platform (CI&T University);-Discount club-Free online platform dedicated to physical, mental, and overall well-being-Pregnancy and responsible parenting course-Partnerships with online learning platforms-Language learning platformAnd many more!
More details about our benefits here: https://ciandt.com/br/pt-br/carreiras
At CI&T, inclusion starts at the first contact. If you are a person with a disability, it is important to present your assessment during the selection process. This way, we can ensure the support and accommodations that you deserve. If you do not yet have the assessment, don't worry: we can support you in obtaining it.
We have a dedicated Health and Well-being team, inclusion specialists, and affinity groups who will be with you at every stage. Count on us to make this journey side by side.