Java Software Engineer
The Java Software Engineer at Confidential Client is responsible for developing scalable full stack web applications using Java and modern front-end technologies, with a focus on building production-ready Spring Boot microservices. The role includes integrating AI technologies such as RAG pipelines and vector databases, owning the full development lifecycle, and working within an Agile Scrum team to deliver high-quality, maintainable software solutions in an on-site environment in New York/New Jersey.
About Careertakes
👉 Important disclosure: Careertakes is a third-party recruiting platform supporting this hiring process. If selected, you will be employed directly by our client, Software Development / IT System Custom Software Development.
Applicants for this role may also receive access to additional matched opportunities through the Careertakes platform.
What You’ll Do
Confidential Client is seeking a Java Software Engineer to design, build, test, and operate scalable Spring Boot microservices and front-end components. You will work on full-stack features, LLM/RAG integrations, and cloud-native systems while following best practices used by third-party recruiting partners.
- Develop and maintain production-grade Spring Boot microservices (Java 8/17).
- Design and implement RESTful APIs, data models, and persistence layers (SQL & NoSQL).
- Build front-end components using React.js or Angular and modern web tooling (HTML5, CSS, JavaScript, TypeScript).
- Implement message-driven architectures and integrations (Kafka, RabbitMQ).
- Implement RAG/LLM integration pipelines using Spring AI and LangChain4j with vector database connectivity.
- Ship to production: CI/CD, monitoring/observability, security hardening, and cost/performance optimization.
- Participate in code reviews, unit/integration testing, and Agile/Scrum ceremonies.
- Create and maintain technical documentation for APIs, deployments, and runbooks.
- Stay current on RAG/LLM best practices: chunking, embeddings, retrieval optimization, and reranking.
Required Qualifications
- Strong programming experience with Java and JavaScript.
- Familiarity with object-oriented programming, data structures (Collections, Maps, Lists, Sets), and common APIs.
- Practical knowledge of relational databases (MySQL, PostgreSQL) and basic SQL.
- Exposure to front-end frameworks (React.js or Angular) and modern web technologies (HTML5, CSS, TypeScript).
- Comfortable working in an Agile/Scrum team and owning features end-to-end.
- Willingness to learn and apply AI/LLM concepts and retrieval-augmented generation patterns.
Preferred Qualifications
- Master’s or Bachelor’s degree in Computer Science or related field.
- 0–1 year practical Java development experience (early-career / entry-level candidates encouraged).
- Hands-on experience with Spring Boot, Maven, React.js, HTML/CSS.
- Experience with messaging platforms (RabbitMQ, Kafka) and app servers (Tomcat, WebLogic).
- Prior experience with Spring AI, LangChain4j, or vector databases for RAG applications.
- Familiarity with cloud platforms and cloud-native patterns.
Compensation & Employment Details
- Employment type: Full-time
- Salary range (USD): $65,000 – $80,000 per year
- Education: Bachelor’s degree preferred (per client posting)
- Experience: Entry-level to early-career candidates welcome
- Confidential Client participates in E-Verify and may provide visa sponsorship where applicable.
Location & Work Authorization
- Work location: California, USA
- Applicants must be authorized to work in the United States; visa sponsorship may be available per client policy.
Tech & Tools You’ll Use
- Languages & Frameworks: Java 8/17, Spring Boot, JavaScript, TypeScript, React.js or Angular
- Datastores: MySQL, PostgreSQL, vector databases, other NoSQL stores
- Messaging & Integration: Kafka, RabbitMQ
- AI / LLM: Spring AI, LangChain4j, embeddings, RAG pipelines
- DevOps: CI/CD pipelines, monitoring/observability tools, containerization/cloud-native deployments
Why This Role (Benefits & Growth)
- Hands-on ownership of production systems and AI/LLM-enabled features.
- Opportunity to learn RAG, vector DBs, and modern full-stack development.
- Work with a confidential client in the software development / custom IT systems industry that supports career growth and practical learning.
Equal Opportunity & Hiring Transparency
Careertakes and our client are Equal Opportunity Employers committed to building a diverse and inclusive workforce. We prohibit discrimination or harassment of any kind. To support a fair and efficient hiring process, AI tools may be used to assist with application review or resume screening. These tools do not replace human decision-making. Final hiring decisions are made by people.
If you have questions about how your data is used, please contact us directly.
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