Top Java Developer Jobs in Los Angeles, CA

Lead design and delivery of microservices-based backend systems, define architecture and standards, mentor engineers, drive cloud-native CI/CD and observability, ensure scalability, resilience, data strategy, and align technical solutions with business goals.

Design and build Java/J2EE solutions using Spring and APIs; develop webservices, DB schemas, PL/SQL and transactional SQL in DB2/Oracle; collaborate with architects, developers and DevOps to implement CI/CD (Jenkins, uDeploy), ensure code quality (Sonar), perform code reviews and testing, resolve technical roadblocks, and drive process improvements. Requires strong communication and teamwork.

Lead software engineer responsible for designing, coding, testing, debugging, and stabilizing Java-based applications. Author and review technical designs, own complex stories and domain dependencies, mentor team members, enforce best practices, interact with business stakeholders, and improve processes and metrics. Provide guidance to contractors and participate in related agreements and SLAs.

Design, implement, and maintain Java-based applications to automate complex data reconciliation across relational and NoSQL sources. Build matching algorithms, integrate with rules engines (Drools), handle data streams, perform gap analysis, and collaborate with analysts and architects to ensure data quality.

Senior Java Developer on an agile team to design, develop, test, and deploy enterprise-grade Java/J2EE web applications. Ensure performance, security, scalability, maintain documentation, review requirements, propose solutions, and improve SDLC through TDD, CI/CD automation, code reviews, and collaboration with architects and stakeholders.

Design, develop, and optimize high-performance Java backend systems. Contribute to architecture, implement core modules, troubleshoot production issues, perform code reviews, and improve scalability, availability, and reliability of distributed financial or blockchain systems.

Design, build, and maintain backend services and Apache Camel integration applications for the Medicare Provider Portal. Ensure secure, high-performance, compliant code, follow architectural and CI/CD standards, collaborate with product/QA/operations, participate in Agile ceremonies, diagnose production issues, and mentor junior developers.

Develop and maintain core Elasticsearch infrastructure and shared platform features. Design scalable APIs, solve performance and concurrency issues, improve observability and CI/CD, automate developer workflows, lead cross-team projects, support complex operational investigations, and use AI to accelerate development and debugging.

The role involves improving Elasticsearch's distributed components, maintaining cluster coordination systems, and addressing complex issues to optimize performance and scalability.

Remote Senior Java Developer responsible for building Java web applications using JSP and Struts2/MVC, creating reports with Jasper or SSRS, and managing Linux application servers (load balancers, JBoss, Apache, WildFly).

Senior Java Engineer responsible for designing and delivering high-quality, low-maintenance software. Coach client teams on modern development practices, apply test-driven development, collaborate in small teams, and pursue continuous learning to improve scalable, maintainable applications.

Develop, maintain, and optimize 2D game features using Java and libGDX. Implement game mechanics (game loops, sprite and input handling), debug and profile code, participate in code reviews, document workflows, and collaborate with AI specialists while providing regular status updates.

Develop and deliver Java/JEE enterprise software in a SOA environment across the full SDLC. Work with JMS, web services, XML technologies, and collaborate with systems, hardware, and integration/test engineers. On-site role requiring Top Secret clearance and up to 25% travel.

Designs and implements enterprise Java (JEE) solutions and microservices in an Agile environment. Collaborates with systems, cloud, DevSecOps, and test teams across the SDLC to prototype, build, test, and release GUI and backend services. Requires Top Secret clearance and SAP/PAR access, on-site work in San Diego or El Segundo, and periodic travel.

Develop and maintain Java applications for DoD systems, focusing on backend services, REST APIs, and microservices, while ensuring security and performance.

The Staff Engineer will leverage over 5 years of experience in Java, JavaScript, and frameworks to develop robust solutions, mentor teammates, and enhance client outcomes while utilizing agile methodologies and cloud development tools.

Seeking a Staff Engineer with 5+ years in Java, focusing on mentoring teammates, solving client challenges, and conducting cloud development.

Lead design and delivery of scalable, resilient distributed systems. Act as technical authority across teams, mentor engineers, drive architecture and CI/CD best practices, troubleshoot production issues, optimize performance, and enhance observability while writing production-grade Java.

Design, implement, test, and maintain scalable Java/J2EE microservices using Spring technologies. Collaborate with architects, follow SDLC, perform unit/system testing, troubleshoot distributed cloud applications, and work in Agile teams to meet enterprise performance and security standards.

Design, develop, test, debug, document, and maintain core software solutions using Java-based frameworks. Contribute to low-level design, participate in DevOps rotations, mentor junior engineers, and support recruiting and team collaboration to deliver stable, scalable products.

Develop and operate Java Spring Boot microservices, deploy and manage services on Kubernetes, perform JVM profiling and heap analysis, load test, diagnose memory leaks, OOMs and P99 latency spikes, remediate security vulnerabilities, and maintain GitHub-based CI/CD and branching workflows.

You will design, build, and maintain scalable applications using Java and JavaScript, collaborating across teams and managing databases.

Senior Java Developer needed for a 2+ year contract in California. Long-term engagement at market rate. Candidates should have senior Java development experience and be available for the contract duration. Submit resume and desired rate.

As a Senior Software Engineer, you will maintain and develop data connectors, enhance data integrations, and improve developer experience within the ClickHouse data ecosystem.

Design, develop, and deliver enterprise-grade Java software across the SDLC. Research emerging technologies, build proofs-of-concept, drive architecture and scalability, collaborate with cross-functional teams, and support testing, documentation, and product stability.