Machine Learning Engineer

Crossing Hurdles is a recruitment firm. We refer top candidates to our partners working with the world’s leading AI research labs to help build and train cutting-edge AI models.

Position: Computer Science PhD – AI Research Contributor

Type: Hourly Contract (Remote)

Compensation: $60–$70/hour

Location: Remote

Duration: 15–20 hrs/week for 2–3 months (extension possible)

Requirements

• PhD in Computer Science, Machine Learning, or a related field
• Deep expertise in core areas such as algorithms, systems, machine learning, or data science
• High attention to detail and strong analytical thinking
• Excellent written and verbal communication skills
• Fluent in English
• Access to a desktop or laptop computer (no Chromebooks)

Role

• Design high-quality, domain-specific problems to support training and evaluation of cutting-edge large language models (LLMs)
• Review, refine, and validate AI-generated outputs for accuracy, complexity, and conceptual soundness
• Apply your expertise to ensure educational depth and technical rigor in content creation
• Collaborate with Mercor coordinators and AI lab leads on prompt design and model evaluation
• Work independently and asynchronously on a flexible schedule

P.S - Accept the referral invite that will pop up while going through the process so we can keep you posted and help you with any issues or questions.