[Job - 32705] Tech Lead .NET Specialist, Brazil

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 Tech Lead (.NET) to guide our engineering team, driving the technical vision, architecture, and delivery of complex back-end software solutions. In this role, you will balance strategic technical leadership with hands-on guidance, working closely with a multicultural team spread across Brazil, Colombia, the UK, and the USA. All communication is conducted in English.

What You Will Do

• Technical Leadership & Architecture: Define and evolve the technical direction, architecture, and design patterns for back-end services using C#, ADO.NET, and SQL Server.

API Governance

Oversee the implementation, evolution, and standardization of SOAP and REST APIs, ensuring robust versioning, security, and best practices.

Quality & Reliability

Guarantee system reliability and scalability by establishing standards for testing (unit/integration), monitoring, and root-cause analysis for complex production issues.

Mentorship & Team Growth

Lead code reviews, mentor senior and junior engineers, and foster a culture of engineering excellence and continuous learning.

System Integration

Oversee the seamless integration of various legacy and modern systems, ensuring high performance and decoupling where necessary.

DevOps & CI/CD Strategy

Drive the optimization of CI/CD workflows and automated pipelines to enhance development velocity and deployment safety.

Cross-functional Collaboration

Partner with product managers, stakeholders, and cross-border teams to translate business requirements into scalable technical roadmaps.

What You Need to Know

• Proven Leadership: Experience acting as a Tech Lead, Team Lead, or Principal Engineer in a production environment.

Expert .NET Ecosystem: Deep, hands-on experience with .NET Framework and .NET Core.

Data Layer Mastery

Solid understanding of ADO.NET and SQL Server, with a proven track record in database design, optimization, and performance tuning at scale.

Integration Expertise

Strong experience designing and maintaining SOAP and RESTful web services, including proficiency in XML serialization/deserialization.

Architectural Acumen

Mastery of software design patterns, clean architecture, and modern distributed system design.

Communication

Exceptional communication and stakeholders-management skills, with resilience in fast-paced, multicultural environments.

Language

Advanced/Fluent English proficiency.

Nice to Have

• Cloud platform expertise, preferably Azure.

Familiarity with specification-driven development and agentic approaches to software development.

Experience leading teams within Agile/Scrum development methodologies.

#LI-AM5

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.