Summary: Seeking a Senior Developer to design and develop scalable cloud-native software solutions, collaborating with cross-functional teams to deliver high-quality applications. Highlights: 1. Design and develop scalable cloud-native software solutions 2. Collaborate with cross-functional teams 3. Mentor junior developers in C# best practices We are **tech transformation** specialists, uniting human expertise with AI to create scalable tech solutions. With over 8,000 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. We are looking for a Senior Developer to be part of our team! You will play a crucial role in designing and developing scalable cloud\-native software solutions. Collaborating with cross\-functional teams, you will ensure the delivery of high\-quality applications that meet complex project requirements while embracing our values of collaboration, innovation, and transformation. Responsibilities: Develop and maintain high\-quality code across the service ecosystem Implement complex business logics and solutions Manage own priorities and performance to deliver high quality, highly performant solutions Documenting your work and contribute to continuous integration/continuous delivery (CI/CD) processes Develop APIs that facilitate communication between systems Implement messaging patterns for asynchronous communication between services Integrate with external systems and databases while maintaining system integrity Ensure proper error handling and resilience in service communications Write comprehensive unit and integration tests Conduct code reviews to maintain code quality and architectural integrity Troubleshoot and resolve complex technical issues across the service ecosystem Mentor junior developers in C\# best practices and design patterns Contribute to technical decision\-making and architectural discussions Requirements: Experience with C\# and .NET development Knowledge of RESTful API design and implementation Experience with microservices architecture and distributed systems Proficiency in asynchronous programming patterns 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 Advanced/fluent English Nice to Have: Experience with Java and Kotlin development Understanding of CI/CD pipelines Knowledge of logging, monitoring, and observability in distributed systems Knowledge of continuous integration practices **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: 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.** *See which data needs to be included in the report by* *clicking here*.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.