Senior .NET/C# 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.

At CI&T, we are seeking a highly skilled and motivated Senior .NET Developer to join our team in Brazil. You will contribute to an innovative project in a collaborative, innovative, transforming, and multicultural environment.

Position Overview:

As a Senior .NET Developer at CI&T, you will be instrumental in developing and maintaining high-quality C# code within our microservices ecosystem. Your expertise will drive the implementation of complex business logic for a leading company in the food market. By managing your priorities effectively, you will deliver high-performance solutions while collaborating with cross-functional teams to ensure our applications meet the highest standards.

• Develop and Maintain: Write and maintain high-quality C# code across our microservices ecosystem.
• Implement Business Logic: Create and implement complex business logic tailored to meet the needs of a large food market company.
• Manage Performance: Prioritize tasks to ensure the delivery of high-quality, performant solutions.
• Document Work: Contribute to continuous integration/continuous delivery (CI/CD) processes by documenting your work effectively.
• API Development: Develop APIs that enable communication between microservices.
• Asynchronous Communication: Implement messaging patterns for asynchronous communication between services.
• Error Handling: Ensure proper error handling and resilience in service communications.
• Testing: Write comprehensive unit and integration tests for C# components.
• Code Review: Conduct code reviews to uphold code quality and architectural integrity.
• Mentorship: Mentor junior developers on C# best practices and design patterns.

• Proven years of professional experience with C# and .NET development.
• Strong knowledge of .NET Core/5+ and ASP.NET Core Web API.
• Experience with microservices architecture and distributed systems.
• Proficiency in asynchronous programming patterns in C# (Task, async/await).
• Advanced C# programming skills, including LINQ, generics, and reflection.
• Experience with dependency injection and inversion of control patterns.
• Familiarity with ORM frameworks (Entity Framework Core).
• Knowledge of RESTful API design and implementation.
• Experience with SQL Server and writing efficient queries.
• Understanding of data access patterns and transaction management.
• Knowledge of database performance optimization techniques.
• Experience 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 Docker.
• Strong analytical and problem-solving abilities.
• Excellent communication skills for technical discussions.
• Ability to work effectively in an agile development environment.
• Self-motivated with strong time management skills.

• Understanding of CI/CD pipelines for .NET applications.
• Knowledge of logging, monitoring, and observability in distributed systems.
• Experience with GraphQL in .NET applications.
• Knowledge of authentication/authorization frameworks (Identity Server, JWT).
• Familiarity with CQRS and Mediator patterns.
• Experience with internationalization and localization in .NET.
• Understanding of domain-driven design principles.
• Understanding of test-driven development principles.
• Knowledge of continuous integration practices.

At CI&T, we are committed to Collaboration, Innovation, and Transformation. Our team is driven by the power of artificial intelligence, and we strive to create a positive impact through technology. Join us to be part of a dynamic environment where your contributions will be valued, and your career can flourish. If you are ready to make a difference, apply today

Our 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 platform

And many more

More details about our benefits here:

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.