Playlab

Staff Machine Learning Engineer

Playlab

full-time

Posted on:

Location Type: Remote

Location: United States

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Salary

💰 $190,000 - $250,000 per year

Job Level

About the role

  • Design and build evaluation systems that assess educational AI quality across thousands of conversations - from learning outcomes to bias detection to curriculum alignment
  • Build ML systems that enable self-improving app creation - learning from high-quality apps on the platform to automatically scaffold new applications for educators
  • Design and prototype downloadable, on-device AI models that work without internet connectivity - critical for privacy and global accessibility
  • Develop systems that enable dynamic, fluid interfaces adapting to learning moments - transitioning seamlessly from chat to writing editor to interactive physics simulation as needed
  • Build content moderation and safety systems designed specifically for educational discourse
  • Implement agentic AI systems that enable educators to create goal-directed applications (e.g., "help students through this project over 2 weeks")
  • Build sophisticated RAG systems that integrate diverse educational content with semantic search and knowledge graphs

Requirements

  • 7+ years building and deploying ML systems in production, with recent experience in generative AI and LLMs
  • Strong understanding of ML fundamentals, model fine-tuning, and evaluation methodologies
  • Experience building production AI systems - you understand latency, cost optimization, and evaluation challenges
  • Proficient in Python and ML frameworks (PyTorch, TensorFlow, HuggingFace, etc.)
  • Thrive in high-agency, high collaboration cultures
Benefits
  • Professional development
  • Remote work options
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
machine learninggenerative AIlarge language modelsmodel fine-tuningevaluation methodologiescontent moderation systemsAI model developmentdynamic interfacessemantic searchknowledge graphs
Soft Skills
collaborationhigh-agency culture