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Senior Machine Learning Engineer - AI Data Trainer

Remote / Online - Candidates ideally in
Denver, Denver County, Colorado, 80285, USA
Listing for: Alignerr
Seasonal/Temporary, Remote/Work from Home position
Listed on 2025-12-23
Job specializations:
  • IT/Tech
    AI Engineer, Machine Learning/ ML Engineer, Data Analyst, Data Scientist
Salary/Wage Range or Industry Benchmark: 60 - 80 USD Hourly USD 60.00 80.00 HOUR
Job Description & How to Apply Below

About The Job

At Alignerr, we partner with the world’s leading AI research teams and labs to build and train cutting‑edge AI models.

This project is about capturing how an LLM reasons and takes actions step by step to solve real tasks. Annotators write clear, structured traces that show planning, tool use, and decision making, creating data that trains models to reason more reliably in real‑world scenarios.

Organization
:
Alignerr
Position
:
Senior Machine Learning Engineer – AI Data Trainer
Type
:
Hourly Contract
Compensation
: $60–$80 /hour
Location
:
Remote
Commitment
: 10–40 hours/week

What You’ll Do
  • Lead the authorship of complex, high‑fidelity reasoning traces for sophisticated technical tasks.
  • Mentor and review structured traces to ensure optimal planning and tool‑use documentation.
  • Design data strategies that help LLMs navigate intricate real‑world decision‑making scenarios.
Requirements
  • Significant experience in Machine Learning or related technical fields, with a focus on model reasoning.
  • Proven ability to decompose complex problems into clear, logical, and documented steps.
  • Experience with advanced LLM evaluation and training methodologies.
Preferred
  • Prior experience with data annotation, data quality, or evaluation systems.
  • Top‑tier Kaggle competition results (e.g., Grand master/Master level), demonstrating a deep understanding of model performance and feature engineering.
Why Join Us
  • Competitive pay and flexible remote work.
  • Collaborate with a team working on cutting‑edge AI projects.
  • Exposure to advanced LLMs and how they’re trained.
  • Freelance perks: autonomy, flexibility, and global collaboration.
  • Potential for contract extension.
Application Process (15–20 min)
  • Submit your resume.
  • Complete a short screening.
  • Project matching and onboarding.

PS:
Our team reviews applications daily. Please complete your AI interview and application steps to be considered for this opportunity.

Seniority level:
Mid‑Senior level

Employment type:

Contract

Job function:
Engineering and Information Technology

Industries:
Technology, Information and Internet

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Position Requirements
10+ Years work experience
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