[Job-28095] Senior Frontend Developer (React) , Brazil at CI&T

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. At CI&T, we are seeking a highly skilled and motivated Senior Backend Developer to join our team in Brazil. You will contribute to an innovative US-based project in a collaborative, fast-paced, and results-driven environment. As a Senior Backend Developer, you will focus on developing and managing a collection of self-contained distributed services, including embedded systems. These services are designed for high availability and reliability, built on reusable tools, adapters, and common architectural patterns. Your work will power workflows, business logic, and facilitate bi-directional communication across data sources and API/Edge services, forming the core systems that drive our projects. Key Responsibilities: - Design, develop, test, deploy, maintain, and improve software applications; - Contribute to end-to-end solution design and development, working on both frontend and backend components; - Build and maintain underlying data and service layers for applications interacting with data stores such as MS SQL and Oracle; - Participate in the design of contracts and schemas for APIs and middleware services; - Establish design patterns, build component libraries, and contribute to technical documentation; - Embrace continuous learning to pursue company-paid certifications and accreditations. Must-have Skills: - Solid experience with C# .NET and Python for building backend services, adapters, and tools; - Excellent understanding of the Software Development Lifecycle (SDLC) and end-to-end solution execution; - Experience with design, implementation, and consumption of API services and service-oriented architecture patterns; - Experience with decoupled distributed services; - Proficiency in debugging and profiling applications to enhance their efficiency, scalability, and stability; - Working knowledge of RESTful and event-driven architectures; - Familiarity with GraphQL and other API strategies; - Experience with Azure cloud services, IoT, and edge computing; - Working knowledge of OpenAPI / Swagger specifications; - Familiarity with modern authorization mechanisms for secure, role-based access; - Strong understanding of core programming concepts, such as algorithms and data structures; - Proficiency with Git and Azure DevOps or other CI/CD tooling; - Working knowledge of Infrastructure as Code (IaC) and Terraform. Nice-to-have Skills: - Experience with Single Page Applications (SPA) and Progressive Web Applications (PWA) is a plus; - Familiarity with specialty JavaScript UI frameworks such as React, Angular, or Vue is advantageous; #LI-TO1 #MidSenior 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: [Upgrade to PRO to see link] 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.