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.

At CI&T, we are seeking a highly skilled and motivated Senior . NET Developer to join our team in Colombia. 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.

Key Responsibilities:

• 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.

Must-have Skills:

• 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.

Nice-to-have 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!

#LI-MJ1

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.