Senior .NET Backend Engineer — APIs & CI/CD (Brazil)

Ciandt; United States; Remote; USD 120,000 - 160,000; Full time

Benefits offered by this job

Health insurance

Meal and food allowance

Childcare assistance

Extended paternity leave

Wellhub (Gympass) TotalPass

Profit Sharing and Results Particip.

Life insurance

CI&T University – continuous learning

Discount club

Well-being platform access

Pregnancy and parenting support

Job summary

CI&T is hiring a Senior .NET Engineer to design, build, and maintain back-end services in C# using .NET Framework/Core, ADO.NET, and SQL Server. You will create SOAP and REST APIs, write unit/integration tests, and guide junior developers within a multicultural, English-speaking team across the USA and other regions.

You will participate in CI/CD workflows, learn new technologies, and help improve existing solutions while prioritizing quality, security, and best practices.

Qualifications

• Experience building back-end services with C#, .NET
• Proficient in SOAP and REST API design
• Unit tests and integration tests
• Experience with CI/CD workflows
• XML data handling
• Strong knowledge of software design patterns
• Fluent English in professional settings

Responsibilities

• Design, build, and maintain back-end services using C#, ADO.NET, and SQL Server
• Create and improve SOAP and REST APIs
• Write unit tests and integration tests
• Find and fix problems in the code (root-cause analysis)
• Help integrate different systems and services using design patterns
• Review other developers’ code and mentor juniors
• Learn new technologies and improve current solutions
• Work on CI/CD workflows to improve team efficiency

Skills

.NET Core / Framework

ADO.NET & SQL Server

SOAP & REST APIs

Unit testing

CI/CD pipelines

XML processing

English proficiency

Multicultural teamwork

Job description

CI&T is hiring a Senior .NET Engineer to design, build, and maintain back-end services in C# using .NET Framework/Core, ADO.NET, and SQL Server. You will create SOAP and REST APIs, write unit/integration tests, and guide junior developers within a multicultural, English-speaking team across the USA and other regions.

You will participate in CI/CD workflows, learn new technologies, and help improve existing solutions while prioritizing quality, security, and best practices.