Maintain and improve existing ASP.NET / .NET Core web apps with a React frontend.
Redesign and implement modern authN/authZ (e.g. OAuth2/OIDC, JWT, identity providers).
Plan and execute .NET Core upgrades.
Work with AWS, MySQL, PostgreSQL, and multiple external integrations.
Use Bitbucket, CI/CD, and Playwright tests as part of the delivery workflow.
Collaborate with stakeholders to discuss and prioritize tasks and clarify requirements (in English).

5+ years of experience with .NET (C#) and web development.
Proven experience with auth flows and .NET version migrations.
Experience with React in production environments.
Experience with AWS, relational databases, and integrations with third-party APIs.
Comfortable with Bitbucket/Git and automated testing (Playwright is a plus).
Fluent English and strong communication/relationship skills.

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!

Senior .NET Developer

Key skills