> Markdown version of [/jobs/ext/2208618-junior-java-developer](https://www.wearedevelopers.com/jobs/ext/2208618-junior-java-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Junior Java Developer - **Company:** BeaconFire Inc. - **Location:** Cupertino, CA, United States - **Experience:** Starter - **Salary:** $62,000.0 - $80,000.0 - **Contract:** Permanent contract - **Skills:** Clean Code Principles, HTML, Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Apache Tomcat, HTML5, Oracle WebLogic Server, Cascading Style Sheets (CSS), Software Quality, Code Review, Databases, Continuous Integration, Data Structures, Relational Databases, Query Languages, Spring Framework, PostgreSQL, Apache Maven, MySQL, NoSQL, Object-Oriented Software Development, Performance Tuning, Scrum Methodology, RabbitMQ, Angular 2+, Software Engineering, SQL Databases, TypeScript, Web Application Frameworks, ReactJS, Large Language Models, Spring-boot, Information Technology, Apache Kafka - **Published:** August 24, 2026 - **Apply:** https://www.disabledperson.com/jobs/74500793-junior-java-developer ## About the Role ? Implement RAG pipelines using Spring AI and LangChain4j with vector database integration. ? Stay up to date with the latest RAG technologies and best practices, including chunking strategies, embeddings, retrieval optimization, and reranking techniques. Requirement: ? Experience in the programming languages Java and JavaScript ? Decent understanding of the software development life cycle ? Basic programming skills using object-oriented programming (OOP) languages with in-depth knowledge of common APIs and data structures like Collections, Maps, lists, Sets, etc. ? Knowledge of relational databases (e.g., MySQL, PostgreSQL), basic SQL query language skills, ? Master's Degree in Computer Science (CS) ? 0-1 year of practical experience in Java coding ? Experience using Spring, Maven, React.js, HTML, CSS ? Knowledge of other contemporary Java technologies (e.g., Weblogic, RabbitMQ, Tomcat, etc.) ? Basic understanding of AI/LLM concepts. ? Spring AI or LangChain4j experience. ? RAG application building or vector database experience. ## Description ? Develop scalable web applications using Java 8/17, Spring Boot, SQL, NoSQL, Kafka, RabbitMQ, Angular 2+, React.js, HTML5, CSS, JavaScript, and TypeScript. ? Write clean and efficient code, and ensure code maintainability and reusability. ? Conduct Testing to ensure application and reliability. ? Perform code reviews to ensure code quality, consistency, and adherence to best practices. ? Participate in Agile Scrum team and own the full development lifecycle, including project planning, design, implementation, testing, and optimization. ? Create and maintain comprehensive technical documentation for applications, APIs, and deployment procedures. ? Ship to production: APIs, monitoring/observability, cost/performance optimization, CI/CD, and security best practices. ? Stay up to date with the latest technologies for Java development. ## Related Videos - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Langchain4J - An Introduction for Impatient Developers](https://www.wearedevelopers.com/videos/1001-langchain4j-an-introduction-for-impatient-developers) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Java Meets AI: Empowering Spring Developers to Build Intelligent Apps](https://www.wearedevelopers.com/videos/1554-java-meets-ai-empowering-spring-developers-to-build-intelligent-apps) - [NoSQL Data Modeling for Front-end Developers](https://www.wearedevelopers.com/videos/297-nosql-data-modeling-for-front-end-developers) - [Can SVG be fast? Rendering a scatter chart with over 10k points](https://www.wearedevelopers.com/videos/100299-can-svg-be-fast-rendering-a-scatter-chart-with-over-10k-points) ## Related Articles - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss)