{"id":4286049,"url":"https://alion.io/job/lightning-staff-senior-software-development-engineer-java-react","title":"Senior Software Development Engineer (Java + React)","company":{"id":4542190,"name":"Lightning ⚡ 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integrations, optimize application performance, and contribute to frontend development when needed.\n\nRequirements\n\n5+ years of commercial experience with Java\n\nStrong knowledge of Java 11/17, Spring Framework and Spring Boot\n\nExperience with microservices architecture and REST APIs\n\nHands-on experience with Oracle Database and SQL\n\nGood understanding of JVM internals, garbage collection and memory management\n\nExperience with performance profiling, heap dumps and application optimization\n\nPractical experience with React\n\nStrong unit testing skills (JUnit, Mockito)\n\nExperience with Git, Docker and CI/CD\n\nEnglish: Upper-Intermediate (B2) or higher\n\nAbility to work independently and take ownership of technical tasks\n\nNice to Have\n\nExperience with high-load enterprise applications\n\nKafka or RabbitMQ\n\nKubernetes\n\nMonitoring tools (Prometheus, Grafana)\n\nJava Flight Recorder (JFR)\n\nResponsibilities\n\nDevelop and maintain Java/Spring Boot 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