The Role
Support and evolve SQL Server and C#/.NET applications; design and architect high-performance, scalable systems; mentor junior developers; develop REST APIs and layered database-integrated solutions; collaborate with cross-functional teams; maintain and optimize existing systems and processes.
Summary Generated by Built In
At CI&T, we help large enterprises transform the potential of AI into real business impact with AI Deployment, AI-native execution, and tech-integrated business solutions.
With 30 years of experience in technological transformation, we accelerate innovation with expertise in Agentic SDLC, Application modernization, Data & AI, Martech and Business strategy.
We are 8,000 CI&Ters across more than 25 countries, collaborating to build solutions with real impact. AI is already part of how we work, evolve, and innovate every day.
Senior Software Developer (.NET)
Key Responsibilities:
- Act as a key player in the support and evolution of applications developed in SQL Server and C# .NET, contributing to the creation of innovative and robust solutions.
- Seek and prioritize continuous improvement of processes and engineering practices, mentoring junior developers and promoting a learning environment.
- Perform a fundamental role in the architecture and development of systems, ensuring high performance and scalability in the implemented solutions.
- Focus on the impact of solutions and user experience, ensuring that applications meet client needs.
- Collaborate with multidisciplinary teams to design, develop, and implement efficient and high-quality solutions.
- Continuously maintain and enhance existing systems, identifying opportunities for optimization and innovation.
Must-have Skills:
- SQL Server: Proficiency in SQL Server (2016 or later), including creation of stored procedures, functions, views, tables, and indexes. Experience with query performance optimization, SQL
profiling, and optimization techniques.
- C# .NET: Mastery of C# language and .NET Framework versions, with experience in WCF, WPF, Windows Services, Web Services, Console Applications, and Web APIs.
- Windows Forms & MVC: Experience with database integration, data loading patterns, and layered architecture (Business layer, Service layer, Data Access layer).
- REST APIs: Experience developing REST APIs, including JSON payload handling and deserialization, HTTP headers, status codes, and authentication mechanisms.
- GIT Repository: Experience using GIT for code versioning, including branching, merging, and conflict resolution.
- Clear and Effective Communication: Ability to convey information concisely and understandably, facilitating team collaboration and understanding with stakeholders.
- Proactivity and Autonomy: Ability to take the initiative in problem-solving and manage tasks independently, delivering results efficiently.
Nice-to-have Skills:
- Experience with production support, application monitoring, and performance profiling tools.
- Knowledge of Windows Server administration, IIS configuration, and debugging complex multi-tier applications.
#LI-NG1
Key Responsibilities:
- Act as a key player in the support and evolution of applications developed in SQL Server and C# .NET, contributing to the creation of innovative and robust solutions.
- Seek and prioritize continuous improvement of processes and engineering practices, mentoring junior developers and promoting a learning environment.
- Perform a fundamental role in the architecture and development of systems, ensuring high performance and scalability in the implemented solutions.
- Focus on the impact of solutions and user experience, ensuring that applications meet client needs.
- Collaborate with multidisciplinary teams to design, develop, and implement efficient and high-quality solutions.
- Continuously maintain and enhance existing systems, identifying opportunities for optimization and innovation.
Must-have Skills:
- SQL Server: Proficiency in SQL Server (2016 or later), including creation of stored procedures, functions, views, tables, and indexes. Experience with query performance optimization, SQL
profiling, and optimization techniques.
- C# .NET: Mastery of C# language and .NET Framework versions, with experience in WCF, WPF, Windows Services, Web Services, Console Applications, and Web APIs.
- Windows Forms & MVC: Experience with database integration, data loading patterns, and layered architecture (Business layer, Service layer, Data Access layer).
- REST APIs: Experience developing REST APIs, including JSON payload handling and deserialization, HTTP headers, status codes, and authentication mechanisms.
- GIT Repository: Experience using GIT for code versioning, including branching, merging, and conflict resolution.
- Clear and Effective Communication: Ability to convey information concisely and understandably, facilitating team collaboration and understanding with stakeholders.
- Proactivity and Autonomy: Ability to take the initiative in problem-solving and manage tasks independently, delivering results efficiently.
Nice-to-have Skills:
- Experience with production support, application monitoring, and performance profiling tools.
- Knowledge of Windows Server administration, IIS configuration, and debugging complex multi-tier applications.
#LI-NG1
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!
More details about our benefits here: https://ciandt.com/br/pt-br/carreiras
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 it.
We 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.
Skills Required
- Proficiency in SQL Server (2016 or later), including stored procedures, functions, views, tables, indexes, and query performance optimization
- Mastery of C# and .NET Framework with experience in WCF, WPF, Windows Services, Web Services, Console Applications, and Web APIs
- Experience with Windows Forms and MVC including layered architecture (Business, Service, Data Access)
- Experience developing REST APIs, handling JSON payloads, HTTP headers/status codes, and authentication mechanisms
- Experience using GIT for version control, including branching, merging, and conflict resolution
- Clear and effective communication skills to collaborate with stakeholders and teams
- Proactivity and autonomy in problem-solving and task management
- Experience with production support, application monitoring, and performance profiling tools
- Knowledge of Windows Server administration, IIS configuration, and debugging complex multi-tier applications
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The Company
What We Do
CI&T is your end-to-end digital transformation partner. As a digital native, we bring a 27-year track record of accelerating business impact through complete and scalable digital solutions. With a global presence of 6,000+ professionals in strategy, research, data science, design and engineering, we unlock top-line growth, improve customer experience and drive operational efficiency.
