Senior Java Backend Developer

Compensation & Location Location: Torrance, CA Schedule: Full-time, long-term contract Work Type: Onsite Pay Range: $55.00 – $62.00 per hour (based on experience & internal equity) Benefits: Health, Dental, Vision, Life Insurance, 401k, Continuing & On-Demand Education 📍 Must be willing to work onsite in Torrance, CA ✅ Sponsorship is available for this role ‼️ W2 ONLY — No C2C, No 3rd Parties Position Summary We are seeking an experienced Senior Java Backend Developer to design, develop, enhance, and support enterprise digital applications and cloud-native backend services. This is a hands-on engineering role requiring strong expertise in Java/J2EE, Spring Boot, AWS, microservices, REST APIs, event-driven architecture, Kubernetes, and CI/CD. The developer will work across the full application lifecycle, including technical design, development, integration, testing, deployment, production support, troubleshooting, and performance optimization. The ideal candidate has 5–8+ years of professional software development experience and has recently built and supported high-volume, distributed applications within AWS environments. Key Responsibilities Design, develop, test, deploy, and support enterprise backend applications using Java/J2EE and Spring BootDevelop solutions using Spring Data JPA, Hibernate, and related Java frameworksDesign and implement scalable microservices and RESTful APIsBuild and support cloud-native applications within AWSDevelop event-driven and serverless application architecturesUtilize AWS services including:LambdaAPI GatewayEKS and ECSS3RDSDynamoDBSNS and SQSEventBridgeAmazon MQMSK/KafkaCloudWatchIAMDevelop containerized applications using Docker and KubernetesSupport deployments using Amazon EKS and/or Red Hat OpenShiftDesign and optimize highly scalable distributed systemsDevelop concurrent and multithreaded Java applicationsOptimize JVM and application performanceWork with Java functional-programming capabilities including Lambda Expressions, Streams API, and CompletableFutureDesign and optimize relational and NoSQL data solutionsImplement automated CI/CD pipelinesDevelop Infrastructure-as-Code using Terraform, CloudFormation, or comparable technologiesImplement application and cloud-security best practicesTroubleshoot complex application and production issuesPerform performance tuning and root-cause analysisParticipate in architecture discussions, technical design sessions, and code reviewsMentor junior developers and promote engineering best practicesWork within Agile/Scrum development teamsUtilize AI-assisted engineering tools to improve development, testing, documentation, and troubleshooting What This Person Will Be Working On The Senior Developer will support enterprise digital applications and customer-facing technology platforms, including: Java backend applicationsAWS cloud-native applicationsMicroservicesREST APIsServerless applicationsEvent-driven systemsDistributed systemsKafka-based integrationsContainerized applicationsKubernetes/EKS environmentsRelational and NoSQL databasesCI/CD and DevOps pipelinesProduction application supportApplication securityAI-assisted software development Required Skills & Experience 5–8+ years of professional software development experienceStrong backend development experience with Java/J2EEStrong hands-on Spring Boot experienceSpring Data JPAHibernateStrong Java fundamentalsJVM internalsConcurrency and multithreadingJava Streams and Lambda ExpressionsCompletableFutureMicroservices architectureRESTful API developmentEvent-driven architectureDistributed systemsServerless architectureStrong hands-on AWS development experienceAWS Lambda and API GatewayAmazon EKS and/or ECSAmazon S3Amazon RDSDynamoDBSNS / SQSEventBridgeAmazon MQMSK / KafkaCloudWatchIAMDockerKubernetes and/or Red Hat OpenShiftRelational database experience with PostgreSQL, MySQL, or similarNoSQL database experienceCI/CD pipeline developmentJenkins, GitLab CI/CD, GitHub Actions, AWS CodePipeline, or comparable technologiesTerraform and/or CloudFormationStrong application-security knowledgeOAuth 2.0, OpenID Connect, and JWTSecrets management and encryptionStrong debugging, troubleshooting, and performance-tuning skillsProduction-support experienceAgile/Scrum experienceCode-review and technical-design experience Preferred Skills PythonAI/ML frameworksGenerative AI / LLM technologiesPrompt engineeringRetrieval-Augmented Generation (RAG)Vector databasesAgentic AI workflowsResponsible AI practicesGitHub CopilotAmazon QCursorClaudeOpenAIAWS certificationsKubernetes certificationsAI/ML certifications