[Job - 31975] .NET Developer Senior, Colombia

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