ELEKS Software Engineering & Development Office is looking for a Senior Software Developer (Java) based in Buenos Aires for a hybrid position: 2–3 days per week onsite at our local office, with the remaining days remote. Working hours 10:00 AM – 6:00/7:00 PM ART ABOUT PROJECT The client is among the top-5 health insurance companies in the US. They are dedicated to expanding access to high-quality, cost-effective health care and equipping their members with information and tools so they can make the best health care decisions for themselves and their families. REQUIREMENTS 5+ years of professional experience in Java backend development Strong proficiency in Java with hands‑on experience in Spring Boot 3.x Solid experience designing and building REST APIs following industry best practices Solid understanding of REST API design, authentication, authorization, and web security principles Hands‑on experience with developer tooling: IntelliJ IDEA, VS Code, Git, Chrome Developer Tools Working knowledge of Dynatrace for monitoring and observability Basic experience with NGINX, Jenkins, and PCF/OpenShift Experience working in agile delivery teams - comfortable with estimation, sprint planning, and Jira NICE TO HAVE Experience in the healthcare domain or regulated industry environments Familiarity with MuleSoft or integration platform concepts Experience with Databricks or other big data / data engineering platforms Experience with containerization (Docker, Kubernetes) and cloud platforms (AWS, Azure, GCP) Understanding of DevSecOps practices and GitOps workflows Knowledge of CI/CD pipeline design and maintenance beyond basic tooling UCD (UrbanCode Deploy), Insomnia RESPONSIBILITIES Develop backend functionality for the enterprise time‑tracking platform Implement new features, enhancements, and integrations Optimize data processing, API performance, and backend logic Participate in refinement, planning, and technical discussions Collaborate with PM, Designers,