Senior Java Developer

Quantum Technologies LLC; Dallas (TX); On-site; USD 83,000 - 118,000; Full time

Job summary

Quantum Technologies. LLC is seeking a Senior Java Developer for a Dallas, TX engagement of 11 months with potential extension. The role demands 8+ years in Java/J2EE, strong Spring and microservices experience, and expertise in cloud platforms (AWS/Azure/GCP).

Expect building scalable backend services, secure REST APIs, and AI-integrated workflows in a fast-paced environment. The position supports multiple work arrangements and pays $73/hour on a C2C basis, with W-2/1099/C2C options.

Qualifications

• 8+ years of hands-on Java/J2EE development experience.
• Hands-on with Java 17/21 and modern Java features.
• Expertise in Spring Boot, Spring Framework, Spring Security, and Spring MVC.
• Strong RESTful API and microservices experience.
• Experience with SQL databases (PostgreSQL/MySQL/Oracle).
• Kafka and event-driven architecture experience.
• Docker, Kubernetes, and containerized apps.
• Cloud platforms (AWS/Azure/GCP).
• CI/CD with Jenkins, GitHub Actions, or GitLab CI.

Responsibilities

• Design, develop, and maintain scalable enterprise Java applications.
• Build and deploy microservices using Java and Spring Boot.
• Develop secure REST APIs and integrate third‑party services.
• Implement event-driven solutions using Kafka and messaging platforms.
• Optimize performance, scalability, and reliability.
• Develop cloud-native applications and deploy with Kubernetes.
• Integrate Generative AI and LLM capabilities where applicable.
• Participate in code reviews and architectural discussions.
• Collaborate with cross-functional teams in Agile environments.

Skills

Java/J2EE

Java 17/21

Spring Boot

REST APIs

Kafka

Docker/Kubernetes

Cloud Platforms

CI/CD

Git/GitHub Actions/GitLab

Tools

Docker

Kubernetes

AWS

Azure

GCP

Jenkins

GitHub Actions

GitLab CI

Maven/Gradle

PostgreSQL/MySQL

Hibernate/JPA

OpenAI/LangChain integrations

Job description

Job Title: Senior Java Developer

Location: Dallas TX

Duration: 11 Months + Extension

Bill Rate: $73/hour (C2C)

Job Type: W-2, 1099, C2C

Client: To Be Discussed Later

Work Authorization: US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, Other

Job Description:

We are looking for an experienced Senior Java Developer with strong expertise in enterprise application development, microservices architecture, cloud technologies, and modern AI integration. The ideal candidate should have hands‑on experience designing scalable backend applications and developing secure, high-performance distributed systems.

Required Skills:

• 8+ years of hands‑on experience in Java/J2EE development.
• Strong experience with Java 17/21 and modern Java features.
• Expertise in Spring Boot, Spring Framework, Spring Security, and Spring MVC.
• Strong experience developing RESTful APIs and microservices architecture.
• Experience with Hibernate, JPA, and ORM frameworks.
• Strong knowledge of SQL, PostgreSQL, MySQL, and Oracle databases.
• Experience with Apache Kafka, event-driven architecture, and messaging systems.
• Hands‑on experience with Docker, Kubernetes, and containerized applications.
• Experience with AWS, Azure, or GCP cloud platforms.
• Strong experience with CI/CD pipelines using Jenkins, GitHub Actions, or GitLab CI.
• Experience with Git, Maven, Gradle, and Agile/Scrum methodologies.
• Knowledge of unit testing and automation using JUnit 5, Mockito, and Testcontainers.

Recent / Modern Skills (2025-2026)

• Java 21 and modern Java development.
• Spring Boot 3.x and Spring Framework 6.
• Spring AI for integrating LLMs into Java applications.
• LangChain4j for building LLM-powered Java applications.
• Generative AI and LLM integration (OpenAI, Azure OpenAI, AWS Bedrock).
• Retrieval-Augmented Generation (RAG) and vector databases.
• AI Agent and tool-calling integration.
• Model Context Protocol (MCP) integration and MCP server development.
• Redis and distributed caching.
• Kubernetes, Helm, and cloud-native application deployment.
• Observability using OpenTelemetry, Prometheus, and Grafana.
• Secure API development using OAuth 2.0 and JWT.

Responsibilities:

• Design, develop, and maintain scalable enterprise Java applications.
• Build and deploy microservices using Java and Spring Boot.
• Develop secure REST APIs and integrate third‑party services.
• Implement event-driven solutions using Kafka and messaging platforms.
• Optimize application performance, scalability, and reliability.
• Develop cloud-native applications and deploy them using Kubernetes.
• Integrate Generative AI and LLM capabilities into enterprise Java applications.
• Implement AI‑powered workflows, RAG pipelines, and MCP-based integrations where applicable.
• Participate in code reviews, architecture discussions, and technical design sessions.
• Collaborate with cross‑functional teams in Agile development environments.

Preferred Qualifications:

• Experience with React.js or Angular.
• Experience with GraphQL.
• Knowledge of system design and distributed architecture.
• Experience with financial services, healthcare, or enterprise domains.
• Familiarity with DevSecOps and application security best practices.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.