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Verified Pay check_circle $52 - $54 per hour
Hours Full-time, Part-time
Location Boston, MA
Boston, Massachusetts open_in_new

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Verified Pay check_circleProvided by the employer
This job pays below average compared to similar jobs in your area.

$39.91

$53.00

$64.2

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About this job

Job Description

Job Description
Job Title: Senior Full Stack Java Developer (AI Lab)
Location: Boston, MA (On-site). Philadelphia also considered.
Employment Type: Contract (W2 through ZipStaff — No C2C or 1099)

About the Opportunity:
ZipStaff is seeking a Senior Full Stack Java Developer for an AI Lab team at a financial services organization. You will stay hands-on building Java / Spring applications and modern front ends while influencing architecture, quality, and mentoring. Work is AI- and data-enabled with Product Owners, data scientists, and business stakeholders.

What You’ll Do:
  • Design, develop, and maintain Java applications in a distributed environment.
  • Build end-to-end features with React or Angular and Java / Spring Boot (Python or Node.js as needed).
  • Own features from requirements through implementation, deployment, and production support.
  • Contribute to AI-enabled and data-driven solutions with data and product teams.
  • Participate in design and architecture discussions; run code reviews.
  • Mentor less experienced developers and set engineering standards.
  • Work with CI/CD and deployment automation; support OpenShift and Azure.
  • Troubleshoot complex production issues.
  • Apply RAG, embeddings, vector search, and agentic frameworks (LangChain, LangGraph, CrewAI) where the product needs them.

Required Qualifications:
  • 5+ years hands-on Java development.
  • Strong Spring (MVC, Data, Security) and enterprise backend systems.
  • Modern front end: Angular and TypeScript (React acceptable).
  • SQL and NoSQL, data modeling, and performance.
  • Messaging / asynchronous processing.
  • Hands-on Azure.
  • Agile (Scrum / Kanban).
  • Ability to work on-site in Boston, MA (Philadelphia considered).
  • Must be legally authorized to work in the United States without sponsorship now or in the future.

Preferred Qualifications:
  • OpenShift / Unix-Linux.
  • RAG, embedding models, vector databases, semantic search.
  • LLMs and agentic frameworks (LangChain, LangGraph, CrewAI).
  • Python or Node.js in addition to Java.
  • Mentoring and technical leadership on a small team.

Benefits:
  • Health Insurance.
  • Dental Insurance.
  • Vision Insurance.
  • 401(k).
  • 401(k) matching.
  • Paid time off.
  • Referral Program.

About ZipStaff:
ZipStaff partners with leading organizations to connect skilled technology professionals with high-impact contract opportunities. We focus on quality matches, clear communication, and long-term success for candidates and clients.

To apply, submit your resume highlighting Java / Spring and Angular (or React) work you owned, Azure or OpenShift delivery, and any RAG / LangChain exposure.

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Posting ID: 1302060964 Posted: 2026-10-30 Job Title: Senior Full Stack Java
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Senior Full Stack Java