Senior AI Engineer (Fullstack)

TL;DR

Senior AI Engineer (Fullstack): Designing and shipping tools, services, and intelligent agents for an AI-powered product ecosystem with an accent on agentic infrastructure and fullstack AI applications. Focus on building search/retrieval services, tool execution layers, and measurement systems to optimize AI system behavior.

Location: Onsite in El Segundo, California, United States

Salary: Low $100ks

Company

hirify.global is a fully integrated online media and software services company focusing on high-value verticals including Health, Automotive, Legal, and Home/Travel.

What you will do

• Build and ship full-stack AI applications, iterating based on performance and user feedback.
• Develop foundational infrastructure, including search/retrieval services, MCP servers, and intelligent agents.
• Own the complete project lifecycle from initial idea through production deployment.
• Establish measurement systems and feedback loops to continuously improve AI behavior.
• Debug complex issues across the entire stack to ensure quality, reliability, and scalability.

Requirements

• 5+ years of experience shipping production-grade frontend and backend code.
• Proficiency in JavaScript, Python, and PHP.
• Experience building APIs, async systems, state management, and workflows.
• Proven experience applying LLMs or ML models in real production applications.
• Strong knowledge of both SQL and NoSQL databases.
• Experience with modern frontend frameworks such as React, Vue, Angular, or Svelte.

Nice to have

• Experience with agentic frameworks (e.g., LangGraph, Google ADK) or Model Context Protocol (MCP).
• Background in information retrieval or search systems.
• Knowledge of AI evaluation and error analysis.

Culture & Benefits

• Comprehensive health insurance options including medical, dental, and vision.
• 401(k) retirement savings plan with company match.
• Paid time off (PTO) and paid holidays.
• Flexible spending accounts (FSA) for medical and dependent care.
• Commuter benefits and access to an Employee Assistance Program (EAP) with well-being coaching.