[Job - 31250] Senior Developer (.NET/React)

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. How You’ll Make an Impact: We are looking for a highly motivated and experienced Senior Fullstack Software Developer to join our development team at HCSS. In this role, you will be responsible for designing, developing, and implementing scalable and robust Cloud-Native software solutions, primarily using .NET, to meet the complex requirements of our projects. What Will You Be Doing? Design, develop, and deploy .NET-based microservices on Cloud providers, following best practices for scalability, performance, and security. Develop responsive and user-friendly frontend applications using the React framework, ensuring a seamless and engaging user experience. Set up and maintain Azure DevOps (ADO) pipelines for automated build, test, and deployment processes, including infrastructure as code. Integrate third-party APIs and services to enhance the functionality of our applications. Mentor junior developers and provide technical guidance and support to ensure the successful delivery of projects. Stay up-to-date with emerging technologies and industry trends, and incorporate them into our development processes as needed. Requirements: Advanced English skills, both written and verbal, to effectively communicate with cross-functional teams and stakeholders. Proven experience as a Senior Fullstack Developer, with strong expertise in .NET microservices and React or Angular frontend development. Strong proficiency in the C# programming language and experience with ASP.NET Core or similar frameworks for building microservices. Hands-on experience with the React framework and proficiency in HTML, CSS, and JavaScript/TypeScript. In-depth knowledge of Cloud services, particularly Azure, and experience with deploying and managing applications on cloud infrastructure. Solid understanding of microservices architecture, RESTful APIs, and asynchronous messaging patterns. Strong experience with Azure DevOps (ADO) for setting up build pipelines and infrastructure as code. Experience with containerization technologies such as Docker and container orchestration platforms like Kubernetes. Familiarity with DevOps practices, including CI/CD pipelines. Excellent problem-solving skills and the ability to troubleshoot complex technical issues. Strong communication and collaboration skills, with the ability to work effectively in a cross-functional team environment. Bonus: Experience with Ruby would be a plus! If you are a passionate and driven Senior Fullstack Developer looking to take your career to the next level with exciting projects in a fast-paced environment, we encourage you to apply today! We are looking forward to receiving your application and working together to drive our success. 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.