Senior Java Engineer - Secure IL6/IL7, TS/SCI

Epsilon Systems Solutions, Inc.; San Diego (CA); On-site; USD 135,000 - 185,000; Full time

Job summary

Epsilon C5I, part of Epsilon Systems Solutions, Inc., seeks a Senior Software Engineer I to design and develop secure, mission-critical software for high-assurance environments in San Diego. The role emphasizes Java, API development, and publish/subscribe architectures for IL6/IL7 workloads.

The candidate will ensure cybersecurity compliance, collaborate across teams, and participate in code reviews and integration activities. Active TS/SCI with CI polygraph and U.S. citizenship are required.

Qualifications

• Bachelor's Degree in Computer Science, Computer Engineering or Related Discipline.
• Six or more (6+) years of Software Engineering experience.
• Proficiency in Java and API design/development.
• Experience with publish/subscribe architectures (ActiveMQ, Kafka, or similar).
• Hands-on experience developing software for IL6 and IL7 environments.
• Security+ certification.
• Active TS/SCI clearance with CI polygraph.
• U.S. Citizen per contract requirements.

Responsibilities

• Design, develop, and maintain Java-based applications and RESTful APIs.
• Implement publish/subscribe messaging architectures using technologies such as ActiveMQ or Kafka.
• Develop software solutions for classified environments (IL6 and IL7).
• Ensure compliance with cybersecurity requirements, including familiarity with RMF and secure coding practices.
• Collaborate with cross-functional teams to deliver high-quality, secure software solutions.
• Participate in code reviews, testing, and integration activities.

Skills

Java

API design/development

Publish/subscribe architectures

IL6/IL7 environments

Security+ certification

TS/SCI clearance with CI polygraph

U.S. Citizenship

Education

Bachelor's Degree in Computer Science/Engineering

Tools

ActiveMQ

Kafka

Job description

Epsilon C5I, part of Epsilon Systems Solutions, Inc., seeks a Senior Software Engineer I to design and develop secure, mission-critical software for high-assurance environments in San Diego. The role emphasizes Java, API development, and publish/subscribe architectures for IL6/IL7 workloads.

The candidate will ensure cybersecurity compliance, collaborate across teams, and participate in code reviews and integration activities. Active TS/SCI with CI polygraph and U.S. citizenship are required.