[Job - 31975] .NET Developer Senior, Brazil

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 Senior .NET Engineer to join our team and help build complex back-end software solutions. You will work with a multicultural team spread across Brazil, Colombia, the UK, and the USA. All communication will be in English. As a Senior .NET Engineer, you will design solutions, help guide less experienced developers, and help the team adopt new technologies and best practices. What You Will Do • Design, build, and maintain back-end services using C#, ADO.NET, and SQL Server • Create and improve SOAP and REST APIs (following best practices and version standards) • Write unit tests and integration tests to make sure services work correctly • Find and fix problems in the code (root-cause analysis) • Help integrate different systems and services together (using software design patterns) • Review other developers’ code and provide guidance to junior team members • Learn about new technologies and find ways to improve our current solutions • Work on CI/CD workflows (automated testing and deployment) to improve how the team works What You Need to Know • Strong experience with .NET Framework and .NET Core in real production systems • Deep knowledge of ADO.NET and SQL Server • Experience with database design and making databases work faster • Hands-on experience building SOAP and REST APIs • Ability to work with XML (reading and writing XML data) • Strong understanding of software design patterns and best practices • Advanced English proficiency • Ability to work well in multicultural, fast-paced teams Soft Skills • Takes ownership of your work and always looks for ways to improve • Communicates clearly with both technical and non-technical people • Works well with others and values the team’s success • Can adapt when requirements change or situations are unclear Nice to Have • Experience with cloud platforms (preferably Azure) • Knowledge of specification-driven development (building code based on clear requirements) • Exposure to Agile development methods • Understanding of modern software development approaches #LI-THAI23