**About MV** We are the 3rd largest IT company in Brazil. We support healthcare organizations—from management structuring to building an innovation culture. With a mission to make the healthcare sector more efficient and digital, MV has consistently contributed to the advancement of Digital Health by delivering innovative solutions that have transformed the landscape of hundreds of institutions. **Our Way of Being** Shared across all our business areas and all regions where we operate, “Our Way of Being” drives us toward a high-performance culture, achieved through employee engagement. This detailed strategy is the soul of our institution and must serve as a constant source of guidance and inspiration for all institutional decisions. **100% ON-SITE POSITION** **What’s the challenge?** Analyze and develop solutions for the most demanding technical challenges within our ecosystem—from production performance bottlenecks to designing new complex components; Actively contribute to the evolution of our backend architecture by designing robust, scalable, and maintainable solutions, always aligned with industry best practices; Serve as the focal point for performance optimization—performing JVM tuning for Java applications, improving database query efficiency (Oracle and PostgreSQL), and ensuring low latency for our RESTful APIs; Act as a guardian of technical quality—writing exemplary code, conducting the most critical code reviews, and disseminating knowledge on automated testing, design patterns, and clean coding practices; Support the technical development of other team members through example, pair programming sessions, and sharing knowledge about advanced technologies and concepts; Research, prototype, and evaluate the adoption of new technologies, frameworks, and tools that can deliver strategic benefits to our products and development processes; **What we expect from you:** Deep expertise and extensive experience with Java (version 8 or higher), including thorough knowledge of JVM internals (memory management, garbage collection, etc.); Architecture and development of high-performance systems using the Spring Boot ecosystem (including Spring Data, Spring Security, Spring Batch); Advanced experience with relational databases Oracle and PostgreSQL—including tuning complex queries, indexing strategies, and modeling for high concurrency; Solid hands-on experience with Apache Kafka—not only producing and consuming messages but also understanding concepts such as topic design, delivery guarantees, and idempotent consumption strategies; Proficiency in creating and maintaining RESTful APIs—with deep understanding of versioning, security, documentation (Swagger/OpenAPI), and performance; Practical knowledge of the containerized application lifecycle using Docker and orchestration with Kubernetes; Experience implementing observability strategies using tools like Datadog to build dashboards, configure alerts, and perform performance analysis (APM) and log analysis. **Not required—but highly valued if you have…** Experience with profiling and performance analysis tools (JProfiler, VisualVM); Knowledge of reactive programming (Spring WebFlux, Project Reactor); Experience with cloud providers (AWS, GCP, Azure, or OCI); In-depth knowledge of application security (OAuth2, OpenID Connect, JWT); Contributions to open-source projects; Experience with NoSQL databases. **What you’ll find with us:** * Daycare Assistance; * Eyeglass Assistance; * Ben.up; * Benefits Club; * Pharmacy Discount; * Birthday Day Off; * Wellhub; * Health and Dental Plans; * Life Insurance; * Meal/Voucher Allowance (extended during vacations); * Certifications and Training; * Corporate University; * And much more! MV is an equal opportunity employer. We believe differences make people unique. Therefore, all qualified candidates—regardless of race, color, religion, age, gender, nationality, disability, or family composition—are welcome. We want to get to know you. Join our team. **\#TeamMV \#JoinMV \#OurWayOfBeing \#LI\-Onsite**