We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions.
With over 8,000 CI&Ters around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality.
We are looking for a Senior . NET Developer to design and deliver scalable system enhancements that expand business capabilities and support multi-brand operations. This role will focus on evolving application architecture for flexibility and growth, while improving the reliability, performance, and maintainability of existing solutions. Additionally, you will play a key role in enabling future integrations and promoting knowledge sharing to strengthen team autonomy and long-term ownership.
Required Skills:
Strong experience with C# and . NET Framework 4.8 in production environments.
Hands-on experience with https://dotnet.microsoft.com/en-us/apps/aspnet Web API 5.3 and https://dotnet.microsoft.com/en-us/apps/aspnet MVC 5.2.
Solid understanding of RESTful services, SOAP/WCF, and system integration patterns.
Experience building Windows desktop applications using WinForms and/or WPF.
Proficiency with SQL Server and Entity Framework (EF 6.2 / EF Core 2.2).
Experience implementing the Repository Pattern for structured data access.
Practical knowledge of Windows Services and job scheduling with Quartz.
Familiarity with file-based integrations (XML, CSV), message queues, and FTP workflows.
Basic understanding of CI/CD practices and application containerization concepts.
Ability to troubleshoot legacy and distributed systems, analyse logs, and resolve performance issues.
Advanced English
Nice-to-have Skills:
Experience working across both modern and legacy . NET applications within the same ecosystem.
Familiarity with maintaining long-running enterprise background services.
Comfort working with mixed integration patterns (API, file transfer, messaging).
Experience participating in modernisation or migration initiatives within . NET environments.
Hands-on experience with OAuth 2.0, IdentityServer3, https://dotnet.microsoft.com/en-us/apps/aspnet Identity, and Azure AD.
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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!
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 itWe 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.
