AI Applications Engineer (LLM)

Location: 100% remote within the United States

Salary: $100,000–$175,000 annually

Company

hirify.global is a technology consulting and software development company delivering cloud, AI, data, and enterprise solutions across the United States.

What you will do

• Design, execute, and operationalize fine-tuning workflows for large language models using supervised, preference-based, and reinforcement learning approaches.
• Construct high-quality datasets and develop rigorous benchmark and human evaluation methodologies.
• Operate large-scale training jobs on GPU clusters and recover reliably from failures.
• Navigate trade-offs between data quality, compute budget, evaluation rigor, and delivery speed.
• Translate ambiguous requirements into production-grade solutions with product, design, engineering, operations, and business stakeholders.
• Contribute through code reviews, design reviews, and mentorship of junior engineers.

Requirements

• Master’s or PhD in Computer Science, Machine Learning, or a related field, or equivalent experience.
• 6+ years of combined ML research and engineering experience with significant LLM exposure.
• Strong proficiency in Python, PyTorch, and modern deep learning frameworks.
• Hands-on experience fine-tuning transformer-based language models at non-trivial scale.
• Experience with distributed training strategies including FSDP, ZeRO, and pipeline parallelism.
• Experience with RLHF, DPO, preference optimization, GPU cluster operations, and LLM work shipped or published with meaningful impact.

Nice to have

• Publications at top-tier ML venues.
• Experience with multimodal model fine-tuning, synthetic data generation, or dataset distillation.
• Open-source contributions to LLM training libraries.
• Exposure to responsible AI evaluation and red-teaming practices.

Culture & Benefits

• Full-time direct W2 employment.
• Remote work within the United States.
• Career growth opportunities within an established technology organization.
• New H-1B visa petitions are not sponsored; U.S. Citizens, Green Card Holders, EAD Holders, and H-1B transfer candidates are encouraged to apply.