Junior Java Developer

Java Full Stack Developer with AI Integration

BeaconFire is based in Central NJ, specializing in Software Development, Web Development,

and Business Intelligence. We're looking for a talented Java developer to build scalable,

production-ready Spring Boot microservices. You'll design and implement high-performance web services, develop intelligent tool-using agents, and work confidently with cloud-native architectures and databases. You'll own the development lifecycle, including design,

implementation, testing, and optimization.

Job Responsibilities

Full Stack Development

● 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.

AI Integration

● 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

Preferred Qualifications

● 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.