[Job – 28808] Senior Developer .NET – Brazil

last updated June 24, 2026 9:27 UTC

CI&T

HQ: Hybrid

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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.

Position Overview:

As a C# Developer, you will play a crucial role in the development and maintenance of our core software applications. You will work closely with cross-functional teams to build scalable, high-performance solutions that align with client requirements and business goals. Your expertise in the . NET ecosystem will be vital as you design server-side logic, manage database interactions, and ensure the seamless integration of web services and REST APIs.

Key Responsibilities

– Collaboration: Partner with frontend developers and stakeholders to design and implement robust, end-to-end software deliverables.
– Development: Design, write, and maintain efficient, testable, and reliable C# code within the . NET Core / . NET 6+ framework.
– API & Services: Develop and optimize web services and REST APIs, ensuring high availability and low latency for integrated applications.
– Architecture: Participate in the implementation of clean architecture, following SOLID principles and industry best practices.
– Proactive Ownership: Embrace an autonomous approach to troubleshooting, root cause analysis, and continuously improving the codebase.

Required Skills & Qualifications

– C# Proficiency: Solid experience in software development using C# and the . NET framework.
– Web Technologies: Experience building and consuming REST APIs and working with https://dotnet.microsoft.com/en-us/apps/aspnet

Core.
– Database Management: Knowledge of relational databases (e.g., SQL Server, PostgreSQL) and experience with Entity Framework.
– Software Design: Strong understanding of Object-Oriented Programming (OOP) and common design patterns.
– Workflow Tools: Familiarity with version control systems (Git) and project management tools (preferably JIRA).
– Language: Advanced English proficiency (reading and writing).

Nice-to-have Skills:

– Cloud & DevOps: Familiarity with Azure or AWS services and Continuous Integration/Continuous Delivery (CI/CD) processes.
– Testing: Experience with unit testing frameworks such as xUnit, NUnit, or MSTest.
– Modern Frontend: Knowledge of JavaScript frameworks (like React or Angular) or Blazor.
– Agile Mindset: Experience working in Agile/Scrum environments.

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.
Apply info ->

To find out more about this job, please visit this link

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