Join CI&T as a Mid-Level .NET Developer and help maintain and modernize web applications built with .NET and React. You’ll focus on improving authentication and authorization, upgrading .NET Core versions, and collaborating with stakeholders to understand needs and prioritize work. You’ll be part of a collaborative team at a global technology company with 30 years of experience in transformation and innovation.
Responsibilities
- Maintain and enhance existing ASP.NET and .NET Core web applications
- Design and implement authentication and authorization solutions using OAuth2, OIDC, JWT, and identity providers
- Plan and carry out upgrades to newer .NET Core versions
- Integrate with AWS, MySQL, PostgreSQL, and external services
- Use Bitbucket and automated testing tools, including Playwright, to deliver quality code
- Contribute to CI/CD pipelines that automate testing and deployment
- Communicate with stakeholders in English to understand requirements and discuss priorities
Required Qualifications
- 5+ years of professional experience with .NET (C#) and web development
- Demonstrated experience with authentication and authorization systems
- Experience upgrading .NET versions
- Production experience with React applications
- Experience with AWS and relational databases such as MySQL and PostgreSQL
- Experience integrating third-party APIs
- Proficiency with Bitbucket or Git and version control
- Advanced English proficiency and strong communication skills
Preferred Qualifications
- Experience with Playwright or other automated testing tools
What We’re Looking For
You communicate clearly, collaborate effectively, and can work directly with stakeholders to turn requirements into well-prioritized technical work. You’re motivated to improve existing applications and contribute to secure, maintainable software.
