Top Java Developer Jobs in Los Angeles, CA

Develops, tests, enhances, and maintains Java backend applications and services for a mission-critical transportation system. Responsibilities include building RESTful APIs, integrations, business logic, database functionality, unit and integration tests, troubleshooting, code reviews, CI/CD participation, secure coding, documentation, and Agile collaboration. The role supports DevSecOps practices, DoD security requirements, system deployments, and occasional front-end integration with Angular.

Develop and maintain scalable Java backend systems using Spring Boot and microservices architecture. Collaborate with customer teams, review specifications, write clean code, participate in code reviews, document solutions, and troubleshoot and optimize backend performance, reliability, and security. The role also contributes technical expertise to training next-generation AI systems, though prior AI experience is not required.

Develop, test, maintain, and document scalable software features for Disney’s news and entertainment platforms. The role contributes to architecture, code reviews, debugging, technical planning, and distributed systems development. It collaborates across technical teams, supports Agile practices, helps onboard teammates, translates requirements into technical tasks, and serves as an escalation point for technical issues. Core work includes Java and full-stack development, cloud infrastructure, event-driven messaging, databases, monitoring, and automated deployment.

Develop and maintain scalable full-stack applications using Java Spring Boot and React. Build REST APIs, integrate warehouse and logistics systems, and work with Apache Kafka event streams. Support legacy application modernization, distributed systems, microservices, relational databases, production troubleshooting, performance improvements, testing, code reviews, and cross-functional technical collaboration.

Develop, test, maintain, and support secure, scalable full-stack Java applications with Angular user interfaces. Write complex code and SQL, create technical designs and documentation, conduct code and design reviews, and ensure compliance with security, audit, regulatory, and SDLC requirements. Collaborate with architects and business partners in an Agile/Scrum environment, lead project delivery, mentor globally distributed junior engineers, and participate in on-call support.

Lead the architecture and modernization of a complex enterprise SaaS platform while remaining hands-on with critical software design and development. Define technical direction, improve scalability, reliability, security, performance, and maintainability, and guide design and code reviews. Partner across engineering and product teams, resolve complex technical challenges, establish engineering standards, mentor engineers, and translate architectural strategy into practical delivery.

The posting provides only a generic description of a Java Developer role and does not specify concrete responsibilities, qualifications, or performance expectations.

Leads architecture, design, implementation, and delivery of highly scalable content platforms serving millions of consumers. Writes critical-path code, decomposes complex architectures for multiple teams, drives engineering standards, operational excellence, AI-assisted development, and cross-functional alignment. Mentors engineers, leads design reviews, participates in hiring and promotion assessments, and influences long-term technical and business strategy.

Seeking a Senior Java Engineer with 10+ years of experience in Java/J2EE development, strong skills in Core Java, Spring, and Hibernate. Knowledge in REST or SOAP web services is essential.

The role involves maintenance, new development, bug fixing, and issue evaluation for the STB middleware, requiring strong Java and multithreading skills.

Design, develop, and maintain high-performance, secure Java backend services and APIs. Ensure reliability, scalability, and cost-efficiency across microservices, databases, messaging systems, and capacity planning. Troubleshoot, profile, benchmark, and optimize systems (including ML applications) and collaborate with Kazakhstan stakeholders.

This Java Developer role involves enhancing data utilization for a state-run project, developing Java web applications, collaborating with teams, and ensuring software quality and security.

Design, develop, test, deploy, and maintain scalable Java backend applications using Spring Boot and microservices. Build RESTful and SOAP integrations, optimize performance and reliability, implement security controls, and develop relational and NoSQL database solutions. Collaborate with architects, product owners, and frontend teams; participate in design reviews and architectural decisions; troubleshoot production issues; and uphold DevOps, CI/CD, coding, and Agile practices. Mentor junior developers and guide technical discussions across enterprise development teams.

Investigate and resolve data-quality issues in large-scale distributed systems. Design Java-based repair pipelines and idempotent correction jobs for high-volume datasets, debug existing code, use AWS services for queue-driven and batch workflows, optimize performance and concurrency, and communicate technical findings and risks to stakeholders.

The Entry Level Java Developer will assist in application development, perform unit testing, document technical actions, and communicate updates on projects.

Designs, implements, and runs Java Spring Boot microservices and REST APIs; leads design, CI/CD, TDD, performance tuning, security, and cross-product collaboration. Coaches teams and owns product KPIs and production support.

Develop, test, and maintain a complex distributed processing application using Python and Java. Collaborate with product owners, data coaches, analysts, DBAs, and Agile teams to meet backend/frontend requirements. Work with distributed workloads (Spark/Hadoop), SQL/Snowflake, AWS, shell scripting, and job scheduling/process automation. Support delivery under Agile/SAFe practices and ensure alignment with program standards.

Design, develop, and maintain web-based UI and REST middleware for federal health IT systems. Participate in Agile/SAFe ceremonies, write design documents, implement features, resolve bugs, and support CI/CD pipelines while collaborating with product, QA, and stakeholders.

Lead backend architecture and implementation for Java Spring microservices, validate and own AI-assisted code, mentor engineers, collaborate with product to deliver features, and drive technical excellence and scalable, test-covered systems.

Develop and maintain Java/J2EE applications using MVC patterns and frameworks (Struts, Spring). Implement client-side features with jQuery and jQuery UI. Work with SQL Server and Oracle databases. Troubleshoot and resolve application issues. Preference for local candidates for in-person interview.

Design, build, and support cloud-native full stack or backend Java products using TDD, CI/CD, microservices and event-driven patterns. Collaborate with product teams, provide production support, implement monitoring and ensure secure, performant systems.

Design, build, and maintain scalable J2EE business applications. Implement features, fix bugs, participate in code reviews, automate tests, optimize performance, and produce documentation.

Lead backend Java development and architecture for enterprise applications. Design and deliver scalable, resilient microservices and APIs, mentor developers, lead technical decisions, support production incidents, and implement CI/CD and cloud-native solutions on AWS.

Develop and maintain Java/J2EE web applications and integrations using ESB technologies (Fuse, Camel, ServiceMix). Implement JMS messaging, optimize services for large-volume data, work with Oracle databases and PL/SQL, build SOAP/REST services, and perform data analysis and performance tuning using Java frameworks and related tools.

Design, develop, and maintain Java-based backend services and APIs for KeeperApp. Own backend components, optimize MySQL schemas/queries, ensure performance and reliability, apply secure coding practices, participate in code reviews, and collaborate with product and engineering teams to deliver features iteratively.