[Job - 31402] Tech Lead (.Net) Senior, 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. Key Responsibilities: 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. Required Skills and Qualifications: 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. Soft Skills: Strategic Ownership: A proactive mindset focused on driving architectural alignment and continuous engineering improvement. Bridge Builder: Ability to translate complex technical concepts to non-technical stakeholders and vice versa. Empathetic Leadership: A collaborative leader who empowers the team, fosters psychological safety, and values shared success. Adaptability: Comfort leading through ambiguity, shifting priorities, and evolving business requirements. Nice-to-Have Skills: Cloud platform expertise, preferably Azure. Familiarity with specification-driven development and agentic approaches to software development. Experience leading teams within Agile/Scrum development methodologies. If you are a seasoned technical leader ready to drive architectural excellence and mentor a high-performing, diverse team, we invite you to apply and shape the future of our platforms! 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.