AI Applied Scientist

Location: Remote within the United States

Base salary: $225,000–$280,000 USD per year, depending on skills, experience, role level, geographic location, and scope.

Company

hirify.global develops an AI shopping agent that finds products across the web with a focus on accuracy, quality, and trust.

What you will do

• Define and evolve accuracy metrics across retrieval, ranking, recommendations, and shopping outcomes.
• Design experiments to measure model and product improvements or regressions.
• Build and maintain evaluation datasets, benchmarks, scoring frameworks, and automated reporting.
• Improve LLM judges through prompting, calibration, and fine-tuning.
• Translate ambiguous product questions into measurable hypotheses and analyses.
• Partner with ML Engineering, AI Engineering, and Product to validate model changes and identify failure modes.

Requirements

• 5+ years of experience in Applied ML, AI Research, or Applied Science; PhD or equivalent depth is strongly preferred.
• Hands-on experience evaluating modern AI/ML systems, including LLMs, agents, ranking, or recommendation systems.
• Direct experience with LLM-based systems, such as judge models, RAG, prompt engineering, fine-tuning, or RLHF.
• Strong foundations in experimentation, A/B testing, causal inference, and statistical rigor.
• Ability to define ambiguous problems and communicate clearly across ML, engineering, and product.
• Must be able to work remotely from the United States.

Culture & Benefits

• Fully remote work within the United States.
• Equity through stock options.
• Medical, dental, and vision coverage.
• 401(k) plan.
• Flexible PTO, company holidays, periodic offsites, and team gatherings.