Crystal Equation Corporation · 17 hours ago
Java Full-Stack Developer
Ridgefield Park, NJ
Contract
Onsite
Senior Level, Lead/Staff
$50/hr - $55/hr
9+ years expCrystal Equation Corporation is focused on empowering people and advancing technology initiatives. They are seeking a senior Java Full-Stack developer who will lead Java-based application development and provide support for existing Android mobile applications while ensuring service continuity and operational stability.
Information TechnologyStaffing Agency
No H1B
Responsibilities
Lead and perform Java Full-Stack application development as the primary responsibility
Design, develop, and enhance backend services using Java, Spring / Spring Boot
Implement and maintain frontend components using HTML, CSS, JavaScript and modern frameworks
Support existing Java-based services and develop future enhancements based on business requirements
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
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
Maintain technical documentation and support knowledge transfer
Collaborate with cross-functional teams to ensure smooth operations and enhancement delivery
Qualification
Required
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
Web technologies (HTML, CSS, JavaScript, React/Angular or equivalent)
RESTful API design and database integration
Experience in application operations, maintenance, and incident support
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
Junior-level Android skills are acceptable, as long as the candidate can independently support maintenance, build, and deployment
Preferred
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
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
Benefits
Paid time off
Medical/dental/vision/life insurance
401K
Parental leave
And more
Company
Crystal Equation Corporation
Crystal Equation Corporation is an information technology company providing staffing solutions.
201-500 employees
Funding
Current Stage
Growth StageRecent News
Business Standard India
2025-09-09
Trak.in - Indian Business of Tech, Mobile & Startups
2025-09-08
Company data provided by crunchbase