About this opportunity
Crystal Equation Corporation lists this Full Stack Engineer opportunity in ridgefield park, New Jersey. Review the employer’s description below for duties, qualifications and application requirements.
Job description
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.
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
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
Qualifications
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 DevOps practices, CI/CD pipelines, and monitoring tools
Experience working in cloud or hybrid infrastructure environments
Background in both development-focused and operations-focused roles
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
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Worksite address
ridgefield park, NJ, 07660, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.