Principal Fullstack Engineer (AI)

TL;DR

Principal Fullstack Engineer (AI): Building revolutionary experiences at the intersection of modality and intelligence for Copilot applications, with an accent on owning features end-to-end, collaboration with AI researchers, and rapid experimentation. Focus on redefining human-AI interaction across text, voice, vision, and action, and solving ambiguous problems to create magical user experiences.

Location: Onsite in Mountain View, United States

Salary: USD $220,800 – $331,200 per year (for San Francisco Bay area and New York City metropolitan area based on IC6 level)

Company

hirify.global AI is pushing the boundaries of AI to build systems with true artificial intelligence across agents, applications, services, and infrastructure, aiming to make AI accessible to all.

What you will do

• Create breakthrough experiences that redefine what an AI companion can do.
• Build across modalities (voice, vision, text, action) to make Copilot feel seamless and alive.
• Own features end-to-end, from concept through production, at scale.
• Collaborate with applied AI researchers to integrate cutting-edge model capabilities to users.
• Ship experiments rapidly, learn from usage, and iterate toward experiences that feel like magic.
• Work across team boundaries on problems that span the entire product.

Requirements

• Bachelor’s Degree in Computer Science or related technical field AND 6+ years technical engineering experience OR equivalent.
• Strong full-stack fundamentals across frontend (React, TypeScript) and backend systems.
• Proficiency in Python or similar languages for backend development.
• Experience building scalable web APIs and services.
• Comfort with ambiguity and the ability to move fast in loosely-defined problem spaces.
• Taste for great product experiences and a drive to ship impactful work.
• Must have work authorization for the United States.

Culture & Benefits

• Work on defining the future of how humans and AI live and work together.
• Fast-paced environment with high ambiguity, shipping experiences used by millions.
• Opportunity to build things that don't exist anywhere else yet.
• Equal opportunity employer considering all qualified applicants without regard to various protected characteristics.
• Eligibility for benefits and other compensation.