The Role
Develop and maintain applications built with SQL Server and C# .NET. Responsibilities include architecture, scalable system development, REST API implementation, performance optimization, production support, and continuous improvement. The role collaborates with multidisciplinary teams, enhances user experience, maintains legacy systems, and mentors junior developers. Required expertise includes SQL Server, .NET Framework, WCF, WPF, Windows Forms, MVC, REST APIs, Git, layered architectures, and database optimization.
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 with SQL Server 2016 or later, including stored procedures, functions, views, tables, indexes, query optimization, SQL profiling, and performance tuning.
- Mastery of C# and .NET Framework, including WCF, WPF, Windows Services, Web Services, Console Applications, and Web APIs.
- Experience with Windows Forms and MVC, database integration, data-loading patterns, and layered architecture.
- Experience developing REST APIs, including JSON payload handling, deserialization, HTTP headers, status codes, and authentication mechanisms.
- Experience using Git for code versioning, branching, merging, and conflict resolution.
- Clear and effective communication with team members and stakeholders.
- Proactivity, autonomy, and independent problem-solving ability.
- 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.
