Java Developer

Quantum Technologies. LLC; Dallas (TX); On-site; USD 110,000 - 160,000; Full time

Job summary

Quantum Technologies. LLC is seeking an experienced Java Developer to design, build, and maintain enterprise applications using Java, J2EE, Spring Boot, and microservices.

You will troubleshoot production issues, support RESTful APIs, and manage major incidents in a fast-paced environment, working with DevOps, DBAs, and QA teams.

The role requires strong debugging, performance tuning, and documentation skills, plus experience with CI/CD, Linux, and relational databases.

Qualifications

• Hands-on Java/J2EE/Spring Boot and microservices experience.
• Experience supporting RESTful APIs and distributed applications.
• Strong debugging, RCA, and production-incident resolution skills.
• Proficient in Linux and shell scripting; database troubleshooting.
• Familiarity with ITIL processes and ticketing tools.

Responsibilities

• Maintain and support enterprise Java applications in production.
• Troubleshoot incidents, RCAs, and coordinate P1/P2 major incidents.
• Collaborate with API, DevOps, and infrastructure teams.
• Document issues, resolutions, and handover notes.

Skills

Java/J2EE/Spring Boot/Microservices

RESTful APIs

JVM internals/GC tuning

SQL databases

Linux scripting

Application servers

Messaging (Kafka/JMS/MQ)

CI/CD (Jenkins/GitHub Actions/AzureDev

Monitoring/observability

ITIL processes

Ticketing tools (Jira/ServiceNow)

Tools

Jenkins

GitHub Actions

Azure DevOps

GitLab CI

OpenShift

Docker

Kubernetes

Job description

Job Description

We are seeking an experienced Java Developer with strong expertise in Java, J2EE, Spring Boot, and Microservices to support and maintain enterprise applications. The ideal candidate will have hands‑on experience troubleshooting production issues, supporting RESTful APIs and distributed systems, optimizing application performance, and managing major incidents in a fast‑paced environment.

Required Technical Skills

• Strong hands‑on experience with Java, J2EE, Spring Framework, Spring Boot, and Microservices.
• Experience supporting RESTful APIs and distributed applications.
• Strong understanding of JVM internals, Garbage Collection, thread management, and performance tuning.
• Hands‑on experience with relational databases such as Oracle, SQL Server, PostgreSQL, or MySQL.
• Strong SQL skills for troubleshooting, debugging, and data analysis.
• Experience working in Linux/Unix environments and writing shell scripts.
• Knowledge of application servers such as Tomcat, JBoss, or WebSphere.
• Experience with messaging technologies such as Kafka, JMS, or MQ.
• Experience with CI/CD tools such as Jenkins, GitHub Actions, Azure DevOps, or GitLab CI.
• Experience with application monitoring and observability tools.
• Strong understanding of ITIL processes, including Incident, Problem, and Change Management.
• Experience using ticketing tools such as ServiceNow, Jira, or Remedy.
• Ability to manage, troubleshoot, and coordinate P1/P2 major incidents.
• Experience performing root cause analysis (RCA) and implementing permanent fixes.
• Ability to troubleshoot application failures, API issues, database problems, and performance bottlenecks.
• Strong ownership of production issues, incident resolution, and service restoration.
• Experience preparing technical documentation, incident reports, and support handover documents.

Nice-to-Have Skills

• Spring Cloud.
• OpenShift, Docker, and Kubernetes.
• Kafka and other distributed messaging technologies.
• MongoDB and Redis.
• Cloud platforms such as AWS, Microsoft Azure, or Google Cloud Platform.
• Experience supporting high-volume banking, financial services, insurance, or enterprise applications.
• Familiarity with AI‑assisted developer tools such as GitHub Copilot or Microsoft Copilot.

Required Soft Skills

• Excellent troubleshooting, analytical, and problem‑solving skills.
• Strong communication and stakeholder management skills.
• Ability to work effectively in a fast‑paced production support environment.
• Strong ownership, accountability, and collaboration.
• Excellent documentation and coordination skills.

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.