Java Full Stack Developer; Mobile Applications

Position: Java Full Stack Developer (Mobile Applications)

Java Full Stack Developer (Mobile Applications)

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Talent Acquisition Manager @ Roth Staffing | Master's in HR Management

The Java Full Stack Developer role is at our client site in Ridgefield, NJ, with all work being conducted onsite.

Applicants must be legally authorized to work in the U.S. for any employer. We are unable to sponsor or transfer sponsorship for employment visas. No 3rd party candidates will be considered.

Work location: 100 Challenger RD. Ridgefield Park, NJ

Position Overview

This role primarily focuses on Java-based Full-Stack application development
, while also requiring the ability to support, maintain, and modify existing Android Mobile Applications
. The ideal candidate is a senior Java Full-Stack developer who can understand Android mobile application codebases and perform basic modification, build, and deployment tasks to ensure service continuity and operational stability.

Key Responsibilities Primary Responsibilities - Java Full-Stack Development

• Lead and perform Java Full-Stack application development as the primary responsibility
• Design, develop, and enhance backend services using Java, Spring / Spring Boot
• Support existing Java-based services and develop future enhancements based on business requirements
• Implement and maintain frontend components using HTML, CSS, Java Script and modern frameworks

Secondary Responsibilities - Android Mobile App Support

• Provide operational support and maintenance for existing Android Mobile Applications
• Understand Android application architecture and source code
• Perform minor code changes, bug fixes, build, and deployment for Android applications
• Support incident handling and troubleshooting related to Android mobile services

Operations & Service Stability

• Provide application-level operational support for both Java and Android systems
• Participate in incident response, root cause analysis, and corrective actions
• Ensure system stability, service continuity, and reduced operational risk

Knowledge Continuity & Collaboration

• Maintain technical documentation and support knowledge transfer
• Collaborate with cross-functional teams to ensure smooth operations and enhancement delivery

Required Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience)
• 9+ years of professional experience in Java Full-Stack application development
• Strong expertise in:
  • Java, Spring / Spring Boot
  • RESTful API design and database integration
  • Experience in application operations, maintenance, and incident support

Android Experience Requirements (Support-Oriented)

• Ability to understand existing Android Mobile App source code
• Experience or capability to:
  • Modify existing Android code (Kotlin and/or Java)
  • Build and package Android applications
  • Perform deployment and operational support tasks
• Senior-level Android development experience is NOT required
• Junior-level Android skills are acceptable
  , as long as the candidate can independently support maintenance, build, and deployment

Preferred Qualifications

• Experience supporting enterprise-scale or production-critical systems
• Familiarity with Dev Ops practices, CI/CD pipelines, and monitoring tools
• Experience working in cloud or hybrid infrastructure environments
• Background in both development-focused and operations-focused roles
• Strong ownership mindset for application stability and service continuity
• Effective problem-solving and incident response skills
• Clear communication with technical and non-technical stakeholders
• Ability to prioritize Java Full-Stack development while handling Android support needs

Key Competencies

• Strong ownership mindset for application stability and service continuity
• Effective problem-solving and incident response skills
• Clear communication with technical and non-technical stakeholders
• Ability to prioritize Java Full-Stack development while handling Android support needs

Seniority Level

Mid-Senior level

Employment Type

Full-time

Job Function

Information Technology
Information Services and Software Development

All qualified applicants will receive consideration for employment without regard to race, color, national origin, age, ancestry, religion, sex, sexual orientation, gender identity, gender expression, marital status, disability, medical condition, genetic information, pregnancy, or military or veteran status. We consider all qualified applicants, including those with criminal histories, in a manner consistent with state and local laws, including the California Fair Chance Act, City of Los Angeles' Fair Chance Initiative for Hiring Ordinance, and Los Angeles County Fair Chance Ordinance.

For unincorporated Los Angeles county, to the extent our customers require a background check for certain positions, the Company faces a significant risk to its business operations and business reputation unless a review of criminal history is conducted for those specific job positions.

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