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Invisible Technologies · 1 month ago

ML Engineer Specialist - Freelance AI Trainer Project

United States of America

Full-time

Onsite

Mid, Senior Level

$30/hr - $50/hr

Agency is seeking a Machine Learning Specialist to tackle hands-on ML challenges that directly impact next-generation AI systems. The role involves solving applied ML tasks, evaluating scientific writing, debugging model behavior, designing benchmark tasks, and improving training datasets.

Data Center AutomationInformation TechnologyProductivity ToolsProject Management

H1B Sponsor Likely

Responsibilities

Solve applied ML tasks: iterating on problems that test and improve model reasoning, from baseline solutions to optimized workflows

Evaluate scientific writing: compare research abstracts and introductions using review rubrics (e.g., NeurIPS guidelines) for clarity, correctness, and impact

Debug advanced model behavior: probe LLMs on optimization, fairness, regularization, transformers, and applied NLP, documenting failure modes

Design new benchmark tasks: identify datasets, analyze state-of-the-art papers, build evaluation scripts, and provide reference implementations

Improve training datasets: deliver structured feedback that makes AI outputs more accurate, reliable, and useful

Qualification

Machine LearningNatural Language ProcessingPythonDeep LearningCloud-based WorkflowsResearch ExperienceClear Communication

Required

Strong background in machine learning, NLP, or data science

Experience with supervised/unsupervised learning, deep learning, reinforcement learning, probabilistic modeling, and applied NLP

Proficiency in Python, ML frameworks, and cloud-based workflows

Clear communication skills, able to explain reasoning and 'show your work.'

Preferred

Master's or PhD in CS/ML/data science preferred; peer-reviewed research or production ML systems a strong plus

Benefits

Health insurance

PTO

Company

Invisible Technologies

Glassdoor3.9

Invisible Technologies makes AI work. Our platform cleans, labels, and structures company data so it’s ready for AI.

Founded in 2015

San Francisco, California, USA

201-500 employees

https://www.invisible.co/

H1B Sponsorship

Invisible Technologies has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

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Trends of Total Sponsorships

2025 (9)