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Contract to Hire Senior Java Engineer with AI tools (Claude Code, Codex, Gemini CLI) - Hybrid Onsite in Boston or Needham MA

Yoh, A Day & Zimmermann Company

boston, ma, United-States Full-time June 14, 2026
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Opportunity Description

Please send current resumes directly to
Bhagyashree Yewle, Principal Lead Recruiter - YOH SPG
to Hire Senior Java Engineer with AI tools (Claude Code, Codex, Gemini CLI) - Hybrid Onsite in Boston or Needham MA
Location: Occasionally working out of Needham is fine but it is based in Boston
(Open to W2 and CTC contractors - visa sponsorship available!) 
**MUST HAVE**
• A STRONG passion for AI and ideally 10+ years of experience in Java-based systems development (Java 11+; current stack Java 21).Good understanding of core java APIs.
• Solid understanding of concurrency, multi-threading, and high-performance systems
• Experience with Spring, SpringBoot and building REST APIs
• Exposure to WebSockets and performance testing (e.g., JMeter) is a plus
• Hands-on experience using GenAI tools (e.g., Claude Code, GitHub Copilot, Codex)
• Ability to use A...
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