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 g