[Job - 31387] Mid-Level .NET Developer, Brazil

Ciandt; Brasil; Híbrido; BRL 120 000 - 180 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Health and dental insurance

Meal and food allowance

Childcare assistance

Extended paternity leave

Profit Sharing and Results PARTICIP

Life insurance

Continuous learning platform (CI&T Uni

Discount club

Well-being platform

Language learning platform

Resumo da oferta

CI&T is seeking a Mid-Level .NET Engineer to join a multicultural team across Brazil, Colombia, the UK, and the USA. You will design, build and maintain robust back-end services using C#, ADO.NET and SQL Server, and evolve SOAP/REST APIs with secure versioning.

Expect collaboration across time zones, code reviews, and ongoing modernization initiatives, all in English. This role emphasizes scalable back-end delivery, reliability through tests, and strong communication in a dynamic, global

Qualificações

• Experience with .NET Framework and .NET Core in production systems.
• Back-end services development with C#, ADO.NET, SQL Server.
• SOAP and REST APIs with versioning and best practices.
• Strong SQL Server data design and performance tuning.
• XML serialization/deserialization proficiency.
• Knowledge of software design patterns and best practices.
• Experience with unit and integration testing for reliability.
• Effective communication in multicultural, fast-paced teams.

Responsabilidades

• Design, build and maintain back-end services with C#, ADO.NET, SQL Server.
• Implement and evolve SOAP/REST APIs with proper versioning and security.
• Ensure service reliability via unit/integration tests and debugging.
• Collaborate on integrations between systems; apply design patterns.
• Conduct code reviews, mentor junior engineers.
• Stay current with emerging technologies to improve solutions.
• Contribute to CI/CD workflows to improve velocity and quality.

Conhecimentos

.NET Framework & Core

C# backend

SOAP & REST APIs

SQL Server & data design

XML serialization

Software design patterns

Testing & reliability

Communication

English language

Ferramentas

Azure

Descrição da oferta de emprego

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.

We are looking for a Mid-Level .NET Engineer to join our team and drive the development and integration of complex back-end software solutions. You will work closely with a multicultural team distributed across Brazil, Colombia, the UK, and the USA, collaborating daily in English and contributing to robust, scalable services and integrations.

Must-Have Skills:

• .NET Experience: strong experience with .NET Framework and .NET Core in production systems.
• Backend Development: hands-on experience building back-end services with C#, ADO.NET, and SQL Server.
• APIs & Integration: solid experience implementing and evolving SOAP and RESTful services, including versioning and best practices.
• Data & Persistence: strong understanding of ADO.NET, SQL Server, database design and performance tuning.
• XML: proficiency in XML serialization/deserialization.
• Software Design: solid grasp of software design patterns and engineering best practices.
• Testing & Reliability: experience with unit and integration testing, troubleshooting and root-cause analysis for service reliability.
• Communication: effective communication skills in multicultural, fast-paced environments.
• Language: advanced English proficiency (all communication in English).

Key Responsibilities

• Design, build and maintain back-end services using C#, ADO.NET and SQL Server.
• Implement and evolve SOAP and REST APIs, ensuring proper versioning, security and best-practice standards.
• Ensure service reliability through unit and integration tests, troubleshooting, monitoring and root-cause analysis.
• Collaborate on integration between multiple systems and services, applying appropriate software design patterns.
• Conduct code reviews, provide technical feedback and mentor junior engineers.
• Stay current with emerging technologies and industry trends, applying them to improve existing solutions.
• Contribute to CI/CD workflows and best practices to increase development efficiency and deployment quality.

Soft Skills

• Ownership & Continuous Improvement: proactive in taking responsibility for tasks and driving improvements.
• Communication: able to clearly explain complex technical topics to both technical and non-technical audiences.
• Collaboration: team player who values shared success and cross-functional collaboration.
• Adaptability: comfortable navigating ambiguity and shifting requirements in a dynamic environment.

Nice-to-Have Skills

• Cloud: experience with cloud platforms, preferably Microsoft Azure.
• Modern Practices: familiarity with specification-driven development and agentic approaches to software development.
• Agile: exposure to Agile methodologies (Scrum, Kanban, etc.).

The successful candidate will deliver reliable, performant back-end services and integrations, help elevate engineering standards through reviews and mentorship, and collaborate smoothly across time zones and cultures using English as the primary language. If you are a seasoned back-end developer ready for complex challenges in a dynamic, multicultural environment, we invite you to apply and become part of our diverse team! #LI-THAI23

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.