[Job-32674] Senior Software Developer (.NET / Azure), Brazil

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’re looking for a Senior Software Developer to join a dedicated nearshore team building a placement management platform for a US education client. The platform runs on Azure with .NET Core APIs, a React frontend and a Dynamics 365 / Dataverse CRM core. You’ll design and build the secure backend services that connect them.

What you’ll do

• Build and maintain C# / .NET Core APIs as microservices hosted on Azure (App Service, Functions, API Management).
• Implement web authentication and authorization flows, including JWT-based token handling and SSO with SAML and OpenID Connect.
• Integrate APIs with Dynamics 365 / Dataverse and the React frontend.
• Work in Azure DevOps (repos, pipelines, boards) within an Agile team, overlapping with US Central Time.

What we’re looking for

• Proven experience with backend development in C# / .NET, with production experience on Azure.
• Hands-on experience implementing authentication: OAuth 2.0 / OIDC, JWT, and SSO / SAML.
• Experience designing RESTful microservices, including security, logging and error handling.
• Upper-intermediate or advanced English for daily communication with US stakeholders.

Nice to have

• Microsoft Entra ID or Entra External ID (formerly Azure AD B2C).
• Dataverse Web API or Dynamics 365 integration.
• Azure certifications such as AZ-204.

      #LI-AG4   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.