Sr. Java Full Stack Developer
- Droisys
17 Hours Ago
NA
C2C
Oakland-CA
8-13 Years
Required Skills: Spring Boot, JBoss, WildFly, Oracle, SQL Server, MySQLGit
Job Description
Migration project From Java 7.8 to Java 8 or newer version
We are looking for a skilled Java Full Stack Developer with strong backend development expertise and hands-on experience in legacy application modernization / migration projects. The ideal candidate should have prior experience working on older Java enterprise applications and modernizing codebases, including application server upgrades, Java version migration, refactoring legacy code, and performance optimization.
This role is primarily 70% Backend Development and 30% Frontend Development, with frontend work involving JSP-based UI development and maintenance.
This role is primarily 70% Backend Development and 30% Frontend Development, with frontend work involving JSP-based UI development and maintenance.
Key Responsibilities
- Analyze, maintain, and modernize legacy Java enterprise applications.
- Lead / contribute to migration initiatives, including application server upgrades (e.g., JBoss upgrades) and Java version migration / modernization.
- Refactor legacy code to improve performance, scalability, maintainability, and security.
- Work on migration efforts such as JBoss 7.x platform upgrades and Java modernization (Java 8+).
- Design and develop robust backend services, business logic, and integrations.
- Support frontend enhancements and maintenance using JSP, HTML, CSS, JavaScript, and related technologies.
- Troubleshoot production issues and optimize application performance.
- Collaborate with architects, business analysts, QA, and DevOps teams during modernization projects.
- Ensure best practices in coding standards, testing, and deployment processes.
Required Skills
Backend (Primary – 70%)
Backend (Primary – 70%)
- Strong hands-on experience in Core Java / Java 8
- Experience with Spring / Spring Boot
- Strong understanding of REST APIs / Microservices
- Experience with JBoss / WildFly application servers
- Hands-on experience in legacy application migration / modernization
- Experience in code refactoring and upgrade projects
- SQL / Database experience (Oracle / SQL Server / MySQL)
- Debugging, performance tuning, and production support experience.
Frontend (Secondary – 30%)
