[Job-31859] MID Backend Developer (Java + Spring Boot)

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 seeking a Mid Backend Developer to join a cross-functional team operating in the alcoholic beverage industry, specifically within a B2B e-commerce platform that is already active in 40 countries. This client is one of our largest partners, and their role is vital for the transformation and continuous improvement of the business model and the scaling of the application. In this position, you will work collaboratively with various teams to ensure the quality and reliability of innovative solutions that drive business success. Key Responsibilities: Design and develop scalable backend systems using Java, Spring, and Spring Boot. Build and maintain microservices and RESTful APIs to support business functionality. Implement data access using Spring Data and JPA with relational and non-relational databases. Utilize messaging queues such as Kafka and RabbitMQ for inter-service communication. Write unit and integration tests using JUnit and Mockito to ensure code quality. Ensure application security and performance through best practices. Help implement CI/CD pipelines using Docker, Docker Compose, and Kubernetes. Collaborate with cross-functional teams to define and deliver high-quality software solutions. Systems monitoring (e.g., New Relic). Requirements: Strong proficiency in Java and related frameworks (Spring, Spring Boot). Solid understanding of microservices architecture and RESTful API design. Familiarity with relational and non-relational databases. Knowledge of messaging systems such as Kafka and RabbitMQ. Experience with testing frameworks (JUnit, Mockito). Proficient in CI/CD practices and tools, including Docker and Kubernetes. Strong problem-solving skills and ability to design effective solutions. Excellent communication skills in English. Proactive approach. Fundamentals in data structures, object-oriented programming, and problem-solving. Knowledge of design patterns, clean code, and best practices. Understanding of testing concepts (regression, smoke, stress, unit, integration, automation, e2e...). English Skills (Advanced) 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.