Back End Developer

BeaconFire Inc.; New Jersey; On-site; USD 110,000 - 150,000; Full time

Job summary

BeaconFire Inc. in Central NJ is seeking motivated software engineers with a strong programming and OOP foundation to build scalable, production-ready backend applications and AI-powered solutions.

Role focuses on Java-based enterprise backend development and Generative AI integration, requiring experience with Java, C++, C#, Kotlin, or similar languages, and exposure to Spring AI and LangChain4j within Agile teams.

Qualifications

• Strong programming fundamentals and problem-solving skills.
• Solid understanding of Object-Oriented Programming (OOP).
• Experience with one or more OOP languages including Java, C++, C#, Kotlin, or similar.

Responsibilities

• Develop scalable and production-ready backend applications and services.
• Build RESTful APIs and backend services using modern software engineering practices.
• Work with relational and NoSQL databases and SQL.
• Apply OOP, data structures, algorithms and software engineering principles.
• Write clean, efficient, maintainable, and reusable code.
• Conduct unit and integration testing, debugging and performance optimization.
• Collaborate in Agile/Scrum teams throughout the SDLC.
• Create and maintain technical documentation and deployment procedures.
• Support production deployment, monitoring/observability, CI/CD, security and performance.
• Transition to Java-based enterprise backend development.
• Develop AI-powered features and applications using Generative AI technologies.
• Implement RAG pipelines and LLM-powered applications.
• Integrate AI models into backend applications and APIs.
• Work with Spring AI and LangChain4j and vector databases.

Skills

Java

C++

C#

Kotlin

OOP

Education

Bachelor's or Master's in CS/CE/IT

Tools

Spring AI

LangChain4j

Job description

BeaconFire is based in Central NJ, specializing in Software Development, Web Development, and Business Intelligence. We are looking for motivated Software Engineers with a strong programming and object-oriented foundation to build scalable, production-ready backend applications and AI-powered solutions.

This role focuses on backend software development and Generative AI integration, with Java as the primary backend development environment. Candidates with experience in Java, C++, C#, Kotlin, or other object-oriented programming languages are encouraged to apply.

Job Responsibilities

Backend Software Development

• Develop scalable and production-ready backend applications and services.
• Build RESTful APIs and backend services using modern software engineering practices.
• Work with relational and NoSQL databases, including SQL-based data management.
• Apply object-oriented programming, data structures, algorithms, and software engineering principles to solve technical problems.
• Write clean, efficient, maintainable, and reusable code.
• Conduct unit testing, integration testing, debugging, and performance optimization.
• Participate in code reviews and follow software development best practices.
• Collaborate within Agile/Scrum teams throughout the software development lifecycle, including design, implementation, testing, deployment, and optimization.
• Create and maintain technical documentation for applications, APIs, and deployment procedures.
• Support production deployment, monitoring/observability, CI/CD, security, and performance optimization.
• Transition and apply existing programming experience to Java-based enterprise backend development.

Generative AI Integration

• Develop AI-powered features and applications using modern Generative AI technologies.
• Implement RAG pipelines and LLM-powered applications.
• Integrate AI models and services into backend applications and APIs.
• Work with frameworks such as Spring AI and LangChain4j.
• Work with vector databases and AI-related data retrieval technologies.
• Apply concepts such as embeddings, chunking, retrieval optimization, and reranking.
• Stay current with emerging Generative AI, LLM, and Agentic AI technologies.

Requirements

• Bachelor's or Master's degree in Computer Science, Computer Engineering, Information Technology, or a related field.
• Strong programming fundamentals and problem-solving skills.
• Solid understanding of Object-Oriented Programming (OOP).
• Experience with one or more OOP programming languages, including Java, C++, C#, Kotlin, or similar languages.
• Good understanding of common data structures and programming concepts.
• Basic knowledge of relational databases and SQL.
• Understanding of the software development lifecycle.
• Strong analytical, communication, and teamwork skills.
• Ability and willingness to transition into Java-based backend development.
• Interest in learning and applying Generative AI and LLM technologies.