Java developer

Java developer role at JSR Tech Consulting in Newark, NJ (Hybrid). Payrate: $65-$75 per hour.

Responsibilities

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

Required Qualifications

• 15+ years of professional Java development experience.
• Proficiency in old and modern Java frameworks, old web servers (e.g., Websphere) and new infrastructure (AWS ECS or Kubernetes).
• Hands‑on experience in Java modernization/migration projects.
• Expertise converting legacy Java codebases to updated architectures.
• Experience consuming and developing APIs; implementing SOA patterns; and working with web service technologies such as APIs, REST, JSON, SOAP, XML, JDBC, MySQL.
• Knowledge of unit, integration, and end‑user testing concepts and tooling (functional & non‑functional).
• Experience with automated testing.
• Software security skills including secure coding, web application security, DevSecOps; solid grasp of authentication, authorization, encryption, digital signatures, JWT, SSL, web service proxies, firewalls, SAML 2.0, OpenID Connect, OAuth 2.0.
• DevOps tools & practices: Branching with GitHub or Bitbucket; CI/CD with Jenkins or GitHub Actions.
• Familiarity with 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 New York or New Jersey.

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.
• Live coding in interview sessions to demonstrate technical skills.

Additional Information

Seniority level: Mid‑Senior level

Employment type: Other

Job function: Information Technology

Industries: IT Services and IT Consulting

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