Woongjin, INC. · 12 hours ago
Java BackEnd Developer
Ridgefield Park, NJ
Contract
Onsite
Senior Level
$85K/yr - $95K/yr
5+ years expWoongjin, Inc. is a rapidly growing team who provides a range of unique, exceptional, and enhanced services to our clients. They are seeking a Java Backend Developer to design and implement core backend enhancements for the BYOD Enhancement Project, ensuring high availability and resilience of the service.
E-CommerceInformation ServicesInformation TechnologySoftware
Responsibilities
Design and implement a local BYOD database with indexing, data freshness tracking, and retention policies
Develop hybrid query logic: primary local DB lookup with configurable fallback to WMP API and Global BYOD API
Implement SFTP-based batch ingestion (CSV sync, validation, reconciliation, error handling)
Enhance backend services including data schema, scheduling framework, and API endpoints
Implement monitoring, logging, metrics, and alerting for availability, performance, and API usage
Ensure fault-tolerant design and seamless fallback between BYOD, WMP, and Global APIs
Qualification
Required
5+ years of Java backend development experience
Strong experience with RESTful APIs, database design (RDBMS), and batch processing
Experienced Java Developer with the following areas: Must Have: Core Java (8+/11+/17+), Spring Boot, Spring Cloud, Spring MVC, Spring Security, RESTful API Design, Microservices Architecture, Message Brokers (Kafka/RabbitMQ), JPA/Hibernate, Docker, Kubernetes, CI/CD Pipelines (Jenkins/GitLab CI/GitHub Actions)
Application Server Expertise: Oracle WebLogic Server: Deployment, configuration, clustering, and administration
Apache Tomcat: Setup, deployment, tuning, and management
Application server troubleshooting and performance optimization
Linux Server Deployment & Administration: Linux server setup, configuration, and management (RHEL, CentOS, Ubuntu)
Shell scripting and automation
Application deployment and release management on Linux environments
Server monitoring, log analysis, and troubleshooting
Strong expertise in database technologies: Oracle Database: PL/SQL, Oracle Performance Tuning, Oracle RAC, Partitioning, Indexing Strategies, AWR/ASH Reports, Execution Plan Analysis
PostgreSQL: Query Optimization, pg_stat_statements, Partitioning, Replication, pgAdmin
Other Databases: MySQL, MongoDB, SQL Server, Redis, Cassandra
Batch Processing & Scheduling: Spring Batch, Quartz Scheduler, Apache Airflow
ETL processes and data pipeline development
Cron jobs, scheduled tasks, and job orchestration
Large-scale data processing and bulk operations
Experience building high-availability, resilient backend services
Hands-on experience with logging, monitoring, and performance tuning
Preferred
Experience with telecom/carrier integrations or large-scale device data systems
Familiarity with cloud environments and distributed system design
Experience handling external API dependency and fallback strategies
Benefits
Medical Insurance
Vision Insurance
Dental Insurance
401(k)
Paid Sick hours
Company
Woongjin, INC.
Woongjin, Inc. is a corporation that specializes in Staffing & Recruiting, IT Consulting and Software Solutions. Woongjin, Inc.
51-200 employees
H1B Sponsorship
Woongjin, INC. has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
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Trends of Total Sponsorships
2024 (1)
2022 (2)
Funding
Current Stage
Growth StageRecent News
Company data provided by crunchbase