Java backend Developer

Job Title
-: Java Backend Developer

Duration
-: 12 Months (Contract To Hire)

Location
-: Newark, NJ (Hybrid)

Work Authorization
-: US Citizens, Green Card, Green Card EAD

Contract Type
-: W2 only

Responsibilities

Lead and execute the migration from legacy Java applications to modern Java frameworks.

Develop, maintain, and optimize enterprise-scale applications new and old Java frameworks (EJB, SpringBoot, etc). Collaborate with cross-functional teams to design, develop, and deploy high-quality software solutions. Integrate AI-assisted development tools, with a focus on using Claude. Provide technical leadership and mentoring to junior developers. Ensure code quality, security, and performance across systems.

Required Qualifications

• Strong proficiency in old and modern Java frameworks as well as old web servers (like Websphere) and new (AWS ECS or Kubernetes)
• Demonstrated hands-on experience in Java modernization/migration projects.
• Expertise in converting legacy Java codebases to updated architectures.
• Application Programming Interfaces (API): Consumption & Development; implementing service oriented architecture (SOA) patterns; Web service technologies such as APIs, REST, JSON, SOAP, XML, JDBC, MySQL
• Unit, interface and end user testing concepts and tooling (functional & non-functional)
• Automated testing
• Software security skills including secure coding, web application security and DevSecOps; Solid grasp of security concepts (authentication, authorization, encryption, digital signature, JWT), SSL, web service proxies, firewall, SAML 2.0, OpenID Connect, OAuth 2.0)
• Dev Ops Tools & Practices: Branching techniques and usage of GitHub or Bitbucket; DevOps, Jenkins or GitHub Actions
• Software Development Life Cycle (SDLC): Monitoring and logging techniques
• Familiarity with Claude AI coding capabilities.
• Strong problem-solving, debugging, and optimization skills.
• Ability to work independently and in teams with minimal supervision.
• Must be located in NY or NJ.

Preferred Qualifications

• Experience in the insurance industry.
• Japanese language proficiency is a plus (not a must)
• Portfolio or GitHub repositories showcasing similar Java migration projects.
• Conduct live coding in interview sessions to demonstrate technical skills.