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CI&T

Senior .NET Developer

CI&T

. Design, build, and maintain back-end services using C#, ADO.NET, and SQL Server .

Posted 10/22/2026full-timeRemote • BrazilSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in designing and maintaining back-end services using C#, ADO.NET, and SQL Server, while effectively collaborating in multicultural teams. Proficient in creating and improving SOAP and REST APIs, with a strong focus on software design patterns and best practices.

Highest-signal resume keywords
C# ProgrammingADO.NETSQL ServerSOAP and REST API DevelopmentAdvanced English Proficiency

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Back-End Service DesignUnit TestingIntegration TestingRoot-Cause AnalysisDatabase DesignXML Data HandlingSoftware Design PatternsCI/CD WorkflowsAgile Development MethodsSpecification-Driven Development
Soft Skills
CollaborationMentoringGuidanceAdaptabilityTeamwork
Tools & Technologies
AzureCloud Platforms
Industry Keywords
Multicultural TeamsFast-Paced EnvironmentBest Practices

Tech Stack

Tools & technologies
AzureCloudSOAPSQL.NET

About the role

Key responsibilities & impact
  • 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
  • Find and fix code problems through root-cause analysis
  • Integrate different systems and services using software design patterns
  • Review other developers’ code and provide guidance to junior team members
  • Learn about new technologies and improve current solutions
  • Work on CI/CD workflows for automated testing and deployment
  • Design solutions and help guide less experienced developers
  • Help the team adopt new technologies and best practices
  • Collaborate with a multicultural team across Brazil, Colombia, the UK, and the USA

Requirements

What you’ll need
  • Strong experience with .NET Framework and .NET Core in real production systems
  • Deep knowledge of ADO.NET and SQL Server
  • Experience with database design and making databases work faster
  • Hands-on experience building SOAP and REST APIs
  • Ability to work with XML (reading and writing XML data)
  • Strong understanding of software design patterns and best practices
  • Advanced English proficiency
  • Ability to work well in multicultural, fast-paced teams
  • Experience with cloud platforms, preferably Azure (nice to have)
  • Knowledge of specification-driven development (nice to have)
  • Exposure to Agile development methods (nice to have)
  • Understanding of modern software development approaches (nice to have)

Benefits

Comp & perks
  • 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
  • Dedicated Health and Well-being team, inclusion specialists, and affinity groups
  • Support and accommodations for people with disabilities during the selection process