Senior Java Developer
Description
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 documentation.
- Analyze applications for configuration and performance tuning opportunities.
- Identify code vulnerabilities and implement remediation measures.
- Implement responsive, client-facing web applications.
- Integrate web services into Angular or React-based single-page applications (SPAs).
- Apply best practices for application design, scalability, performance, and maintainability.
- Perform other duties as assigned.
Required Skills/Experience:
- 8+ years designing and developing web-based applications using Java and J2EE technologies.
- 8+ years front-end UI development using modern JavaScript frameworks (React or Angular).
- 8+ years experience in web services design and development, including API integration.
- 8+ years experience with open-source Java frameworks such as Spring Boot.
- 8+ years implementing RESTful service security using JWT, OAuth, or similar standards.
- 8+ years experience implementing applications utilizing JEE application servers.
- 8+ years experience building responsive, client-facing applications.
- 8+ years experience integrating web services into Angular or React SPAs.
- Strong experience implementing best practices for performance, scalability, and maintainability.
Preferred Skills/Experience:
- 5+ years experience with JBoss Enterprise Application Platform.
- 5+ years experience working in Agile development environments.
- Experience working with state government or healthcare/public sector systems (nice to have).
What We Offer:
- Short- to mid-term contract opportunity with direct client engagement.
- Hybrid work model at Austin, TX location. 3 days remote / 2 days onsite (Mon & Tues required onsite)
- High-impact public sector technology initiatives
Eligibility:
- Must be local to Austin and be eligible to work in the U.S. without sponsorship.
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