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Java Developer Jobs in California

Java Developer (AWS, AI (Claude/Copilot), DevOps, Kafka).

ICONMA, LLC
  • Palo Alto, CA
  • $16.90–$58.57 Per Hour
  • Instant Apply
19 days ago

Job Description

Our client, an IT Services and Consulting company, is looking for a Java Developer (AWS, AI (Claude/Copilot), DevOps, Kafka) for their Palo Alto, CA/ Plano, TX location.
 
Responsibilities:
  • Leads end-to-end delivery of full stack solutions using Java Spring Boot, GraphQL/REST, and AWS-managed services, from design through production support.
  • Drives architecture and design reviews, defining service boundaries, API contracts, data models, and integration patterns.
  • Develops secure, high-quality, production-grade code; conducts thorough code reviews; sets and enforces engineering standards.
  • Builds and maintains highly available and scalable services with strong operational excellence: reliability, performance, cost awareness, and maintainability.
  • Implements and governs authentication/authorization using OIDC/OAuth2, token validation, scopes/claims, and service-to-service security patterns.
  • Establishes robust observability practices (structured logging, metrics, tracing), incident response readiness (runbooks).
  • Evaluates vendor and internal solutions (including architectural fit, security posture, scalability, and operability) and guides adoption decisions.
 
Requirements:
  • Mandatory skills:  Java (Spring Boot), Microservices, AWS, RestAPI, AI (Claude or Copilot), DevOps, Kafka
  • Minimum 12+ years applied full stack engineering experience delivering and operating production systems; experience as a senior/lead capacity (technical leadership, design ownership).
  • Java Spring Boot expertise: building APIs, dependency injection, validation, error handling, and performance tuning.
  • GraphQL proficiency: schema design, resolvers, federation/composition patterns (where applicable), query performance (N+1 mitigation, caching), and API governance/versioning strategy.
  • REST proficiency: OpenAPI-style contract design, pagination/filtering, idempotency, backward compatibility, and consumer-driven API evolution.
  • OIDC/OAuth2: hands-on implementation with JWTs, refresh/access token flows, scopes/claims, secure session patterns, and least-privilege access control.
  • AWS experience (hands-on): designing, deploying, and operating cloud-native applications; strong understanding of IAM, networking basics, and operational tooling (logs/metrics/alarms).
  • Data layer expertise: · AWS Aurora PostgreSQL: advanced SQL, indexing, query optimization, migrations, and transactional design.
  • AWS Neptune: gremlin, graph modeling, query patterns, and performance considerations for graph workloads.
  • Event-driven systems:
  • AWS Kafka (MSK): topics/partitions, consumer groups, schema evolution, ordering/at-least-once semantics, idempotency, retries/DLQs, and operational monitoring.
  • CI/CD and quality:
  • Strong Git practices, automated testing (unit/integration/contract/e2e), code quality gates, and release confidence practices (feature flags, progressive rollout where applicable).
  • AI-assisted engineering (MUST):
  • Demonstrated proficiency using Claude Code and/or GitHub Copilot to accelerate development, debugging, refactoring, test generation, and documentation—while ensuring correctness, security, and maintainability (e.g., validating outputs, avoiding sensitive data leakage, and adhering to team standards).
  • Years of experience:  14.00 Years of Experience
 
Why Should You Apply?Why Should You Apply?

Numbers & Facts

LocationPalo Alto, CA
Salary$16.90–$58.57 Per Hour

Skills

  • Access Controlunmatched
  • Amazon Web Services (AWS)unmatched
  • Application Programming Interface (API)unmatched
  • Artificial Intelligence (AI)unmatched
  • Authenticationunmatched
  • Cachingunmatched
  • Cloud Applicationsunmatched
  • Code Reviewsunmatched
  • Computer Securityunmatched
  • Continuous Deployment/Deliveryunmatched
  • Continuous Integrationunmatched
  • Data Modelingunmatched
  • Database Designunmatched
  • Debugging Skillsunmatched
  • Dependency Injectionunmatched
  • DevOpsunmatched
  • Documentationunmatched
  • Engineeringunmatched
  • Error Handlingunmatched
  • Gitunmatched
  • GitHubunmatched
  • GraphQLunmatched
  • Health Planunmatched
  • High Availabilityunmatched
  • Incident Responseunmatched
  • Information Technology Consultingunmatched
  • Javaunmatched
  • Machine Toolunmatched
  • Metricsunmatched
  • Microservicesunmatched
  • OAuthunmatched
  • Paginationunmatched
  • Performance Tuning/Optimizationunmatched
  • PostgreSQLunmatched
  • Production Supportunmatched
  • Production Systemsunmatched
  • Query Optimizationunmatched
  • REST (Representational State Transfer)unmatched
  • Refactoringunmatched
  • SQL (Structured Query Language)unmatched
  • Security Architectureunmatched
  • Software Engineeringunmatched
  • Spring Frameworkunmatched
  • Technical Leadershipunmatched
  • Technical/Engineering Designunmatched
  • Test Automationunmatched
  • Testingunmatched
  • Unit Testunmatched
  • Vendor/Supplier Evaluationunmatched

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