[Job - 32379] Mid-Level Fullstack Developer (.NET / Next.JS), Brazil

Posted Yesterday
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Hiring Remotely in Brazil
Remote
Mid level
Information Technology • Consulting
The Role
Build and maintain backend services with C# and .NET, develop Next.js frontends, create RESTful APIs, integrate reporting services, write unit and integration tests, review code, and collaborate with clients and global Agile teams. The role requires strong backend expertise, full-stack development experience, architectural understanding, database knowledge, communication skills, and advanced English.
Summary Generated by Built In

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 hiring a Mid-Level Full-Stack Developer for a team that builds and improves a platform for education. This platform helps professionals understand and use data about programs and accreditation.

In this job, you will:

  • Work with a C# and .NET backend
  • Work with Next.js frontends
  • Work in a monorepo (one big project with many parts)

Your main skill should be backend development with C# and .NET. You will also write frontend code, but your strongest area should be the backend.

What You Will Do:

  • Build and maintain backend services using ASP.NET Core (.NET 8) and Entity Framework Core
  • Create and connect RESTful APIs (following the existing patterns in the project)
  • Write frontend code using Next.js 14, React 18, and TypeScript
  • Connect with reporting and analytics services
  • Talk directly with the client and other teams to understand what they need
  • Learn and follow the project’s code standards and architecture
  • Write tests (unit tests and integration tests) to check if the code works correctly
  • Review other developers’ code and help improve the team’s work
  • Work in an Agile team, delivering finished and tested code regularly

What You Need to Know:

  • 3+ years working as a backend developer with C# and .NET
  • Experience building and maintaining RESTful APIs
  • Knowledge of Entity Framework Core (or similar tools)
  • Experience with databases like Azure SQL or SQL Server
  • Understanding of dependency injection, SOLID principles, and layered architecture
  • Experience with React, TypeScript, and Next.js (willing to work across full-stack)
  • Experience with Git and writing tests
  • Ability to read and understand large, complex code projects
  • Strong communication skills and advanced English level (to work with global clients and teams)

Nice to Have:

  • Experience with Microsoft Azure services (like Azure SQL)
  • Knowledge of NoSQL databases (like Azure Cosmos DB)
  • Experience with BI/reporting tools (Power BI, Tableau, or similar)
  • Experience with application monitoring (Application Insights, Serilog, or similar)
  • Experience with monorepo tools (Turborepo, npm workspaces)
  • Knowledge of Tailwind CSS or component libraries (shadcn/ui, Radix UI)
  • Experience with CI/CD pipelines (Azure DevOps)
  • Understanding of authentication (OAuth 2.0, JWT, MSAL)
    #LI-THAI23

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.

Skills Required

  • 3+ years of backend development experience with C# and .NET
  • Experience building and maintaining RESTful APIs
  • Knowledge of Entity Framework Core or similar tools
  • Experience with Azure SQL or SQL Server databases
  • Understanding of dependency injection, SOLID principles, and layered architecture
  • Experience with React, TypeScript, and Next.js
  • Experience with Git and writing tests
  • Ability to understand large, complex code projects
  • Strong communication skills
  • Advanced English proficiency
  • Experience with Microsoft Azure services
  • Knowledge of NoSQL databases such as Azure Cosmos DB
  • Experience with BI or reporting tools such as Power BI or Tableau
  • Experience with application monitoring tools such as Application Insights or Serilog
  • Experience with monorepo tools such as Turborepo or npm workspaces
  • Knowledge of Tailwind CSS or component libraries such as shadcn/ui or Radix UI
  • Experience with CI/CD pipelines, preferably Azure DevOps
  • Understanding of OAuth 2.0, JWT, or MSAL authentication
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The Company
HQ: Campinas
6,474 Employees
Year Founded: 1995

What We Do

CI&T is your end-to-end digital transformation partner. As a digital native, we bring a 27-year track record of accelerating business impact through complete and scalable digital solutions. With a global presence of 6,000+ professionals in strategy, research, data science, design and engineering, we unlock top-line growth, improve customer experience and drive operational efficiency.

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