Principal Machine Learning Engineer (AI)

TL;DR

Principal Machine Learning Engineer (AI): Developing and fine-tuning state-of-the-art LLMs for customer support and travel applications with an accent on model optimization, RAG, and high-performance deployment. Focus on designing AI assistants and autonomous agents to enhance the guest and host experience.

Location: Remote (Must be based in a US state where hirify.global has a registered entity)

Salary: $292,000 — $365,000 USD

Company

A global marketplace that connects hosts offering unique stays and experiences with guests around the world.

What you will do

• Fine-tune state-of-the-art LLMs for diverse use cases and optimize them for high-performance deployment.
• Design and develop AI products including AI Assistants, autonomous agents, and travel planning tools.
• Create a multi-year technical roadmap to keep the company at the leading edge of the AI landscape.
• Evaluate and refine foundational models to ensure maximum performance and efficiency.
• Drive key AI architectural decisions and contribute to the overall ML platform strategy.

Requirements

• PhD in Computer Science, Machine Learning, Mathematics, Statistics, or a related technical field.
• 10+ years of experience developing ML models and products at scale from inception to business impact.
• Proficiency in Python and hands-on experience with PyTorch.
• Proven record of training, fine-tuning, and optimizing model inference run-time.
• Expertise in post-training (data processing, LLM alignment, RLHF) or runtime optimizations (quantization, GPU inference).
• Must reside in a US state where hirify.global, Inc. has a registered entity.

Nice to have

• Publications at peer-reviewed AI conferences (e.g., NeurIPS, CVPR, ICML, ICLR).
• Experience with AI technologies specifically applied to Customer Support Systems.
• Expertise in the entire AI product lifecycle following agile practices in Applied AI/ML.
• Strong infrastructure acumen for deploying and scaling business-critical AI services.

Culture & Benefits

• Competitive base pay with eligibility for bonus and equity.
• Employee Travel Credits for using the platform.
• Inclusive and diverse work environment focused on innovation.
• Flexible remote-eligible work arrangement within the US.