Mid Level .NET Developer, Brazil

CI&T; Brasil; On-site; BRL 120,000 - 180,000; Full time

Benefits offered by this job

Health and dental insurance

Meal and food allowance

Childcare assistance

Extended paternity leave

Wellhub gym/fitness partnerships

Profit Sharing and Results PARTICIP. (

Life insurance

CI&T University – continuous learning

Job summary

CI&T is seeking a Mid-Level .NET Developer to join our engineering team in Brazil. You will build backend services and APIs using .NET and Azure technologies, and collaborate on cloud-native applications and distributed architectures.

You’ll work with other engineers to deliver high-quality software while applying best practices across development, testing, deployment, and monitoring. The role emphasizes strong C#/.NET skills, ASP.NET Core APIs, SQL Server and Cosmos DB, and familiarity with

Qualifications

• Professional backend development with C#/.NET.
• Experience with ASP.NET Core APIs and microservices.
• Experience in Microsoft Azure.
• Familiarity with messaging systems and asynchronous communication (Service Bus).
• Relational databases (SQL Server) and NoSQL (Cosmos DB).
• CI/CD concepts and Azure DevOps or GitHub Actions.
• Automated testing: unit & integration tests.
• Containerization and orchestration (Kubernetes or Service Fabric).
• Application monitoring, logging, observability.
• Knowledge of clean code, maintainable architecture, secure coding.
• Advanced English speaking.

Responsibilities

• Build backend services and APIs using .NET and Azure.
• Collaborate on cloud-native applications and distributed systems.
• Contribute to development, testing, deployment, and monitoring processes.
• Apply engineering best practices across the SDLC.

Skills

C# and .NET

ASP.NET Core APIs

Microsoft Azure

Service Bus

SQL Server

Cosmos DB

CI/CD (Azure DevOps / GitHub Actions)

Unit testing

Integration testing

Kubernetes / Service Fabric

Observability / logging

Secure coding practices

English (Advanced)

Tools

Azure DevOps

GitHub Actions

Kubernetes

Service Bus

Job description

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 Mid-Level .NET Developer to join our engineering team and contribute to the development and evolution of scalable, secure, and reliable software solutions.

In this role, you will build backend services and APIs using .NET and Azure technologies, collaborate on cloud-native applications, and contribute to distributed systems and event-driven architectures. You will work alongside other engineers to deliver high-quality software while applying engineering best practices across development, testing, deployment, and monitoring.

Requirements for this challenge

• Professional experience in backend software development using C# and .NET.
• Hands-on experience with ASP.NET Core APIs and a good understanding of microservices.
• Experience developing or supporting applications in Microsoft Azure.
• Familiarity with messaging systems and asynchronous communication patterns, particularly Service Bus.
• Experience working with relational databases, preferably SQL Server, and familiarity with NoSQL databases such as Cosmos DB.
• Understanding of CI/CD concepts and experience with Azure DevOps or GitHub Actions.
• Knowledge of automated testing practices, including unit and integration testing.
• Familiarity with containerization and orchestration concepts, including Kubernetes or Service Fabric.
• Understanding of application monitoring, logging, and observability.
• Knowledge of software design principles, clean code, and maintainable architecture.
• Awareness of secure coding practices and software compliance requirements.
• Strong problem-solving skills and the ability to collaborate effectively with other engineers.
• Advanced English level (speaking).

Nice to Have

• Experience with Infrastructure as Code tools and practices.
• Familiarity with Domain-Driven Design (DDD), CQRS, and event sourcing.
• Experience designing or supporting event-driven architectures.
• Exposure to high-scale distributed systems.
• Experience with contract testing and automated quality gates in CI/CD pipelines.
• Familiarity with Application Insights, Grafana, and OpenTelemetry.
• Knowledge of security and compliance standards, particularly PCI DSS.

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.