Java developer

JSR Tech Consulting; New Jersey; Hybrid; USD 89,544 - 103,320; Part time

Benefits offered by this job

Competitive pay rate

Hybrid work flexibility

Referral opportunities for increased interview chances

Job summary

A technology consulting firm in Newark, NJ, is seeking a Mid-Senior Java Developer to lead the migration from legacy Java applications to modern frameworks. The ideal candidate will have over 15 years of experience in Java development, demonstrating proficiency in both old and modern Java frameworks, along with expertise in APIs and software security skills. This hybrid position offers a pay rate of $65-$75 per hour, catering to professionals located in New York or New Jersey.

Qualifications

• 15+ years of professional Java development experience is required.
• Proficient in old and modern Java frameworks and web servers.
• Hands-on experience in Java modernization and migration.

Responsibilities

• Lead migration from legacy Java applications to modern frameworks.
• Develop and maintain enterprise-scale applications.
• Collaborate with cross-functional teams on software solutions.

Skills

Java development experience

Modern Java frameworks

API development and consumption

Problem-solving skills

Tools

AWS ECS

Kubernetes

GitHub

Jenkins

Job description

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

Referrals increase your chances of interviewing at JSR Tech Consulting by 2x.