Full-time

Senior Java Developer

Posted by Onset Technologies LLC • Austin, TX, United States

📍 Austin, TX 🕒 February 28, 2026

About the Role

Summary:

Onset Technologies is seeking an experienced Senior Java Developer to support application development initiatives for the Texas Health and Human Services Commission. The ideal candidate will have strong full-stack development experience using Java/J2EE, Spring Boot, and modern JavaScript frameworks such as React or Angular. This role requires hands-on expertise across the full application lifecycle, including design, development, API integration, performance tuning, and security implementation.
Responsibilities:

+ Design, develop, and maintain front-end user interfaces and back-end services using Java, Spring Boot, and modern JavaScript frameworks.

+ Participate in high-level and detailed design, development, testing, and deployment of new application components.

+ Manage full application lifecycle including database design, API integration, testing, and deployment.

+ Create and maintain technical and design documenta...

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