Full Stack Developer (API, React, Java, AI) - 7+ Yesr

We have the below urgent position with my client.

Job Role

Full Stack Developer (API, React, Java, AI)

Location

Brampton, ON

Long Term Contract

Total Experience

5-7 Years

Detailed JD (Roles and Responsibilities)

Job Description

What You Will Do

• AI-Native Interfaces: Build responsive UIs supporting streaming tokens (SSE), agent tool-use
• visualization, and real-time reasoning feedback.
• API & Middle-Tier Development: Implement secure microservices that orchestrate requests
• across RAG, agents, and evaluation layers.
• State Management: Handle complex frontend state for multi-turn conversations, agent
• workflows, and partial-completion tasks.
• Performance Optimization: Ensure low-latency rendering and smooth UX across varied AI

Required Qualifications

• Expertise in modern frontend frameworks (React, Vue) and backend runtimes (Java, Python).
• Experience building chat interfaces or state-heavy dashboards.
• Strong understanding of web security and API design.

Skillset Requirements

• Frontend Engineering: React/Vue, component architecture, state management, and streaming
• AI-Native UX: Designing interfaces for streaming tokens, agent tool-use visualization, and
• Backend Microservices: Java/Python runtimes, secure routing, and API orchestration.
• State Management: Redux, Zustand, Vuex, or equivalent for long-running agent tasks.
• Web Security: OWASP, secure API design, auth flows, and safe AI request routing.
• Performance Optimization: Low-latency rendering, concurrency handling, and streaming UI
• Event-Driven UI: SSE, WebSockets, and real-time agent feedback loops.
• Integration with AI Backends: Handling varied response times, partial outputs, and agent state
• Accessibility & Design Systems: WCAG-compliant, reusable component libraries for consistent