Junior Level- Java Developer

re-zoo-me; Windsor, Northern (CO, KY); Hybrid; USD 110,000 - 160,000; Full time

Job summary

BeaconFire, based in Central NJ, seeks a Java Full Stack Developer with AI integration to build scalable Spring Boot microservices and web applications. You will design and implement production-ready services, APIs, and data flows, while collaborating with cloud-native architectures and CI/CD pipelines.

You will own the full development lifecycle from design through testing and optimization, work on AI-enabled features using LangChain4j and vector databases, and contribute to documentation and

Qualifications

• Experience in Java and JavaScript
• Understanding of the software development life cycle
• Object-oriented programming with knowledge of common APIs and data structures (e.g., Collections, Maps, Lists, Sets)
• Knowledge of relational databases (MySQL, PostgreSQL) and SQL

Responsibilities

• 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 with focus on maintainability and reusability.
• Conduct testing to ensure application reliability.
• Perform code reviews to ensure quality and consistency.
• 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 latest technologies for Java development.
• Implement AI integration pipelines and tools as described (RAG pipelines, LangChain4j).

Skills

Java

JavaScript

OOP

SQL/NoSQL

Education

Master’s Degree in Computer Science

Tools

Spring

Maven

React.js

HTML

CSS

Kafka

RabbitMQ

Tomcat

WebLogic

LangChain4j

Vector DB

Job description

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.