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 Tech Lead Fullstack Developer to join our team!

This role will be primarily focused on Frontend development (70%), with 30% Backend, working in a modern, collaborative environment focused on software engineering best practices.

Tech Stack

Frontend — 70%

React

Backend — 30%

.NET 8
C#

Databases

PostgreSQL
MongoDB
Entity Framework Core (EF Core)

Testing

xUnit
Bogus (Faker)
NSubstitute

Frameworks & Tools

MediatR
AutoMapper
Rebus
Git
GitFlow

Cloud, Messaging & CI/CD

Microsoft Azure
Azure DevOps
Azure Pipelines
Azure Service Bus
YAML-based CI/CD pipelines

What you’ll be working on

Developing Fullstack applications, with a stronger focus on Frontend;
Developing and maintaining APIs and services using .NET/C#;
Building user interfaces with React;
Working with relational and NoSQL databases;
Developing automated tests and applying software quality practices;
Working with messaging and event-driven architectures using Azure Service Bus/Rebus;
Contributing to CI/CD processes using Azure DevOps and Azure Pipelines;
Working with Git and branching strategies such as GitFlow.

If you have experience with React + .NET/C# and are excited about this opportunity, we’d love to hear from you!

#LI-AM5

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.

CI&T

Tech Lead Fullstack Developer - .Net/React

About the Job

Requirements

Responsibilities

Tech Stack

What you’ll be working on

About the Company

CI&T

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