Mid-Level Java Developer, Brazil

We are **tech transformation** specialists, uniting human expertise with AI to create scalable tech solutions. With over 8,000 CI\&Ters around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality. We are looking for a **Mid\-level Java Developer to join our team on an innovative and challenging project, powering our mobile application. Your work ensures that field teams and partners get accurate, timely data on their iPads—whether they’re viewing dashboards, submitting forms, or fetching data. Solid, well‑tested Java services are the backbone of our mobile experience. **Responsibilities: \* Design and implement REST endpoints in Java 17\+ with Spring Boot, tailored for low‑latency, high‑efficiency consumption by our React Native app; \* Optimize payloads and error handling to guarantee a smooth UX over cellular networks; \* Translate business rules (calculations, data submissions, flows) into reliable backend logic; \* Coordinate with frontend peers to version APIs and manage backward compatibility; \* Write comprehensive unit and integration tests (JUnit) to protect mobile workflows; \* Enforce coding standards via peer reviews and static analysis; \* Collaborate with DevOps to refine CI/CD pipelines (Jenkins, Terraform) for rapid, safe releases; \* Engage in sprint ceremonies and backlog refinement—help define which mobile features come next; **Requirements for this challenge: \* Solid experience building backend services in Java 17\+ and Spring Boot; \* Proven experience crafting RESTful APIs for mobile or web clients, with attention to network constraints; \* Comfortable diving into production logs and metrics to resolve live\-site issues quickly; \* Clear communicator who works hand‑in‑hand with frontend developers to deliver seamless mobile experiences; \* Intermediate/Advanced English. **Our Stack \& Practices:** \* Backend language \& Framework: Java 17\+, Spring Boot; \* Frontend Language \& Framework: Typescrtyp / React Native (iPad); \* Data Layer: PostgreSQL (Aurora/RDS), JPA/Hibernate; \* Testing: JUnit; \* CI/CD: Jenkins, Terraform; \* Monitoring: CloudWatch logs/metrics, X‑Ray tracing, Grafana; \* Methodology: Scrum (2‑week sprints, backlog refinement, retrospectives). \#Midsenior **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.**********