Mid-Level or Senior .NET / AWS Developer, Brazil

Description

At CI\&T, we help major enterprises transform the potential of AI into real business impact through 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 tangible impact. AI is already part of how we work, evolve, and innovate every day. **Important**: If you reside in the Campinas Metropolitan Region, your physical presence at our city offices is mandatory, per our current attendance policy. We are seeking professionals based in Brazil for the position of **Mid-Level or Senior .NET / AWS Developer**, working on a financial-sector project. You will develop high-performance and scalable .NET systems, directly contributing to the evolution of Brazil’s largest banking institution. Here, we value individuals with architectural vision, commitment to quality, and the ability to guide teams. **Responsibilities:** * Architect and develop .NET systems focused on performance and scalability; * Collaborate with multidisciplinary teams in designing and implementing solutions; * Maintain and enhance existing systems using sound engineering practices; * Integrate systems with AWS services; * Contribute to continuous improvement of team processes and practices. **Requirements for this role:** * Proficiency in object-oriented programming and C\# / ASP.NET Core; * Dependency injection in .NET and use of ORMs: Dapper and Entity Framework; * Microservices architecture, Clean Architecture, Domain-Driven Design (DDD), and SOLID principles; * Knowledge of event-driven architecture (Choreographed vs. Orchestrated Saga); * Feature toggles in production applications; * REST API design and gateway creation using AWS API Gateway; * Application security knowledge: authentication, OWASP, and best practices; * Hands-on experience with unit testing using xUnit and mocking strategies; * Experience with AWS (EC2, ECS, EKS, Fargate, S3, SQS, SNS, Lambda, API Gateway, CloudWatch); * Messaging: Amazon SQS, Kafka, or RabbitMQ; * Relational and NoSQL databases; * Docker and/or Kubernetes; * Infrastructure as Code: Terraform or AWS CloudFormation; * CI/CD and familiarity with Git. **Nice-to-have:** * Monitoring with Splunk, Grafana, AppDynamics, or X\-Ray; * Release strategies: Canary, Blue/Green, A/B; * GitHub Actions or AWS CodePipeline; * Feature toggles in production applications. \#LI\-CB4 **Our benefits:** * Health and dental insurance; * Meal and food allowances; * Childcare assistance; * Extended parental leave; * Partnerships with gyms and health and wellness professionals via Wellhub (Gympass, TotalPass); * Profit and Results Sharing Program (PLR); * Life insurance; * Continuous learning platform (CI\&T University); * Discount club; * Free online platform dedicated to promoting physical and mental health and overall well-being; * Pregnancy and responsible parenting courses; * Partnerships with online course platforms; * Language learning platform; * And many more More details about our benefits here: https://ciandt.com/br/pt\-br/carreiras At CI\&T, inclusion begins at first contact. If you are a person with a disability, it is important to **submit your medical report during the selection process.** *Check which information must be included in the report* *by clicking here.* This allows us to ensure the support and accommodations you deserve. **If you do not yet have the official medical report, don’t worry—we can support you in obtaining it.** We have a dedicated Health and Wellness team, inclusion specialists, and affinity groups ready to support you at every stage. Count on us to walk this journey alongside you.