Hybrid Senior Back-End Developer – .NET/AWS

at CI&T

• Job title: Senior Back-End Developer – .NET/AWS
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: No Education Requirement
• Tech skills: ASP.NET, AWS, Docker, EC2, ElasticSearch, Kafka, Kubernetes, NoSQL, RabbitMQ, Ray, Splunk, Spring Boot, SpringBoot, Terraform, .NET
• Location requirements: Hybrid, Brazil

About the role

• Senior Developer Back End specializing in .NET and AWS for financial project with continuous improvement focus.

Responsibilities

• Play a leading role in the digital and cultural transformation at Brazil's largest banking institution, not merely observing best practices but fostering a continuous learning mindset and pursuit of technical excellence;
• Promote and prioritize continuous improvement of processes and engineering practices, with critical thinking and the ability to mentor junior developers on the team;
• Play a key role in the architecture and development of high-performance, scalable .NET systems;
• Work with a focus on the impact delivered by solutions and on the user experience;
• Collaborate with multidisciplinary teams to design, develop, and implement efficient solutions;
• Maintain and continuously improve existing systems;
• Integrate systems with AWS cloud services.

Requirements

• Object-oriented programming (OOP): strong command of the paradigm with fluency in concepts and applicability (classes and objects, association, encapsulation, inheritance, and polymorphism);
• Solid experience in .NET and .NET Core development (C# and ASP.NET). Knowledge of the framework, its versions and evolution;
• Familiarity with dependency injection concepts and using DI libraries in .NET;
• Knowledge of ORM mechanisms (Dapper, Entity Framework), including concepts and applicability;
• Deep knowledge of microservices architecture, design pattern practices, and Clean Architecture;
• Knowledge of event-driven architecture and orchestration types, e.g., Choreographed Saga vs Orchestrated Saga;
• Understanding and application of feature toggles in applications;
• Software development best practices including SOLID, KISS, YAGNI, DRY and DDD — REST API modeling with Spring Boot and creating gateways using AWS API Gateway;
• Knowledge of application security, including authentication and authorization mechanisms for API consumption, OWASP and best practices;
• Hands-on experience with unit and integration testing using xUnit and mocking strategies;
• Strong understanding of relational and NoSQL databases;
• Experience using messaging services such as Amazon SQS, Kafka or RabbitMQ;
• Experience with AWS (EC2, ECS, EKS, Fargate, S3, SQS, SNS, Lambda, API Gateway, CloudWatch);
• Experience with DevOps practices and automation using tools such as Docker and/or Kubernetes;
• Experience creating infrastructure as code using Terraform and/or AWS CloudFormation;
• Monitoring with Splunk, Elasticsearch, Grafana, AppDynamics, X-Ray;
• Knowledge of release strategies (Canary, Blue/Green, A/B testing);
• Experience working with agile teams and methodologies (Scrum/Kanban);
• Familiarity with version control tools such as Git and GitHub;
• Continuous Integration/Continuous Deployment (CI/CD);
• Knowledge of GitHub Actions or AWS CodePipeline.

Benefits

• Health and dental insurance;
• Meal and grocery allowance;
• Childcare assistance;
• Extended parental leave;
• Partnerships with gyms and health & wellness professionals via Wellhub (Gympass) / TotalPass;
• Profit sharing (PLR);
• Life insurance;
• Continuous learning platform (CI&T University);
• Employee discount club;
• Free online platform dedicated to physical and mental health and well-being;
• Expectant parent and responsible parenting course;
• Partnerships with online course platforms;
• Language learning platform;
• And many others