Senior Java Full Stack Engineer (Spring & Enterprise Applications)

CrowdPlat; Austin (TX); Hybrid; USD 100,000 - 120,000; Full time

Job summary

CrowdPlat is seeking a Senior Java Full Stack Engineer in Austin, TX, to enhance, maintain, and modernize enterprise applications. The ideal candidate will have over 8 years in Java development, REST services, and enterprise application support, demonstrating strong analytical and troubleshooting skills. This hybrid role requires local candidates and involves up to 650 hours of work from Monday to Friday, with an emphasis on collaboration and compliance with coding standards.

Qualifications

• 8+ years of hands-on Java development experience using OOP.
• 8+ years of J2EE application development experience.
• 8+ years of experience writing SQL and working with relational databases.
• 8+ years of experience developing RESTful services with Spring technologies.
• Experience with Spring framework concepts.
• Experience with unit testing frameworks such as JUnit.
• Strong debugging, troubleshooting, and analytical skills.
• Experience working within SDLC methodologies.

Responsibilities

• Design, develop, enhance, and maintain enterprise Java applications.
• Implement updates to business logic and user interfaces.
• Support application maintenance, enhancements, and defect resolution.
• Develop and maintain RESTful APIs and services using Spring technologies.
• Perform code reviews, testing, and documentation.
• Conduct root cause analysis and resolve application issues.
• Ensure compliance with coding standards and security policies.
• Maintain code quality and unit testing standards.
• Collaborate with teams and stakeholders for application improvements.
• Support deployment activities and production support.

Skills

Java development

RESTful services

Spring technologies

SQL and relational databases

Object-Oriented Programming (OOP)

Unit testing frameworks (JUnit)

Debugging and troubleshooting

Software development lifecycle (SDLC)

Tools

Angular

Crystal Reports

Power BI

Job description

Location: Austin, TX (Hybrid – 2 Days Onsite / Local Candidates Only) Duration: Contract through August 2026 with possible extensions Hours: Up to 650 hours (M–F, 8:00 AM–5:00 PM CST) Interview Mode: Microsoft Teams

We are seeking an experienced Senior Java Full Stack Engineer to support enterprise application enhancements, maintenance, and modernization efforts. This role is ideal for professionals with deep experience in Java development, Spring-based architectures, REST services, and enterprise application support in complex environments. The selected candidate will contribute to application enhancements, feature development, defect resolution, reporting capabilities, and system improvements while collaborating across technical teams.

Responsibilities

• Design, develop, enhance, and maintain enterprise Java applications
• Implement updates to business logic, user interfaces, reporting capabilities, and system functionality
• Support application maintenance activities, enhancements, and defect resolution
• Develop and maintain RESTful APIs and services using Spring technologies
• Perform code reviews, testing, documentation, and troubleshooting activities
• Conduct root cause analysis and resolve application issues across environments
• Ensure compliance with coding standards, security policies, and testing requirements
• Maintain code quality, unit testing, and code coverage standards
• Collaborate with technical teams, analysts, and stakeholders to deliver application improvements
• Support deployment activities and production support, including occasional on-call responsibilities
• Participate in peer reviews and contribute to continuous improvement initiatives

Required Qualifications

• 8+ years of hands‑on Java development experience using Object‑Oriented Programming (OOP)
• 8+ years of experience with J2EE application development
• 8+ years of experience writing SQL and working with relational databases
• 8+ years of experience developing RESTful services using Spring technologies
• Experience with Spring framework concepts including dependency injection, transaction management, and security
• Experience with unit testing frameworks such as JUnit
• Strong debugging, troubleshooting, and analytical skills
• Experience working within software development lifecycle (SDLC) methodologies

Preferred Qualifications

• Experience with Angular or modern UI frameworks
• Experience with reporting tools such as Crystal Reports
• Experience with Power BI reporting and analytics solutions
• Experience supporting enterprise applications in large‑scale environments
• Strong communication and collaboration skills

Additional Information

• Hybrid schedule: 3 days remote / 2 days onsite (Monday & Tuesday required onsite)
• Candidates must currently reside within 50 miles of Austin, TX
• No relocation candidates will be considered
• Occasional after‑hours work and on‑call support may be required