Master .NET Specialist

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. Local São Paulo - SP Remoto + colaboração internacional

Responsabilidades

Design, build, and maintain complex back-end services in C#, ADO. NET, and SQL Server. Implement and evolve SOAP and REST APIs, ensuring consistent standards for versioning, security, performance, and documentation. Ensure service reliability through unit and integration testing, proactive troubleshooting, and root-cause analysis of production incidents. Collaborate on integrations between multiple systems and services, applying appropriate software design patterns and architectural principles.

Conduct code reviews and provide mentorship and technical guidance to junior and mid-level engineers. Stay up to date with emerging technologies and industry trends, recommending and applying improvements to existing solutions. Contribute to CI/CD workflows and best practices to enhance development efficiency, quality, and deployment consistency.

Requisitos

Extensive experience with. NET Framework and. NET Core in high-volume, production systems. Advanced hands-on experience designing and building back-end services using C#, ADO. NET, and SQL Server. Strong background implementing and evolving SOAP and RESTful services, including versioning, security, and best practices. Deep understanding of ADO. NET and SQL Server, including database design, optimization, and performance tuning. Proficiency in XML serialization/deserialization for integrations and data exchange.

Strong command of software design patterns, clean architecture principles, and engineering best practices. Experience designing unit and integration tests, troubleshooting complex issues, and performing root-cause analysis to ensure reliability. Effective communication skills and resilience in fast-paced, multicultural teams. Advanced English proficiency (all communication conducted in English).

Diferenciais 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!

Benefícios

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 Sobre A Empresa: 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.

Benefícios

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