Java Developer

Greycell Labs
2 days ago

Role details

Contract type
Temporary contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior

Job location

Tech stack

Java
Microsoft Excel
Business Logic
Code Coverage
Databases
System Configuration
Data Security
Software Debugging
Document Retrieval
Enterprise JavaBeans
Hibernate
JUnit
Maven
Data Streaming
Systems Integration
Enterprise Search
Data Processing
Java Application Server
Enterprise Software Applications
Backend
Integration Tests
Pagination

Requirements

  • 84 months of experience developing Java-based enterprise applications, contributing to government systems, handling data access, business logic, data manipulation, and end-to-end feature development.

  • 84 months of experience integrating Hibernate ORM with Java applications, resolving complex Hibernate 6 migration issues such as entity mapping errors, DTO mismatches, inheritance conflicts, and null data handling across multiple enterprise modules.

  • 84 months of experience designing enterprise solutions using Enterprise JavaBeans (EJB 3.x), implementing Stateless and Stateful Session Beans and leveraging container-managed transactions for scalable and reliable backend processing.

  • 84 months of experience working with complex database systems, including schema alignment, ensuring data consistency, proper transaction handling, and maintaining reliable data flow across enterprise applications.

  • 84 months of experience designing and enhancing enterprise search and processing modules, including multi-criteria search functionality, server-side pagination, Excel export, notes management, and document retrieval capabilities.

  • 84 months of experience developing Java applications integrating with legacy mainframe systems using Unisys DTPRA, supporting secure data exchange, troubleshooting integration issues, and ensuring reliable system-to-system communication.

  • 84 months of experience configuring and managing builds using Apache Maven, including dependency management, plugin configuration, and build lifecycle customization for enterprise applications

  • 84 months of experience writing and maintaining unit and integration tests using JUnit, improving test coverage, maintaining regression stability, and supporting framework upgrades.

  • 84 months of experience in providing post-production support, including resolving critical application issues, debugging production defects, and ensuring system stability and continuity across enterprise modules.

  • 36 months of experience working in government-based enterprise application environments, supporting public sector systems with secure data processing, compliance-driven workflows, and integration across multiple legacy and modern platforms

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