Staff Software Engineer, AI Model Lifecycle

Crusoe

$208K — $279K *
Enterprise Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Advanced degree in Computer Science, Engineering, or related field.
  • 8+ years of experience in leading impactful AI projects.
  • Proficient in Generative AI, specifically with Large Language Models and multimodal systems.
  • Hands-on experience in training and fine-tuning LLMs with Reinforcement Learning techniques.
  • Ability to work autonomously while being proactive and collaborative.
  • Passion for developing advanced AI products and solving complex technical challenges.

Responsibilities

  • Manage fine-tuning systems for large language models using SFT, PEFT, and LoRA techniques.
  • Implement and maintain end-to-end training pipelines for LLMs.
  • Incorporate reinforcement learning into fine-tuning and training workflows.
  • Develop distillation and reinforcement learning pipelines focused on optimization strategies.
  • Handle dataset and model management, ensuring version control and reproducibility at scale.

Benefits

  • Competitive compensation package.
  • Restricted Stock Units offered.
  • Generous paid time off and holidays.
  • Comprehensive health, dental & vision insurance.
  • Employer contributions to HSA.
  • Paid parental leave and life insurance.
  • Short-term and long-term disability coverage.
  • Professional development and tuition reimbursement support.
  • Mental health and wellness resources.
  • Commuter benefits for parking and transit.
  • Cell phone stipend provided.
  • 401(k) plan with company matching up to 4%.
  • Volunteer time off available.
Full Job Description
About This Role:

The Staff Software Engineer for the AI Model Lifecycle team will play a crucial role in building a comprehensive managed platform for the entire application development lifecycle, with a specific focus on leveraging Machine Learning models, including Large Language Models (LLMs).

What You'll Be Working On:
  • Manage fine-tuning systems for large foundation models (SFT, PEFT, LoRA, adapters), including multi-node orchestration, checkpointing, failure recovery, and cost-efficient scaling.
  • Implement and maintain end-to-end training pipelines for Large Language Models.
  • RFT and Reinforcement learning to the fine tuning and training sections
  • Distillation and reinforcement learning pipelines (e.g., preference optimization, policy optimization, reward modeling).
  • Dataset, model, and experiment management: versioning, lineage, evaluation, and reproducible fine-tuning at scale.


What You'll Bring to the Team:
  • Advanced degree in Computer Science, Engineering, or a related field.
  • 8+ years of industry experience leading and driving impactful projects in the AI Space
  • Experience in Generative AI (Large Language Models, Multimodal).
  • Hands-on experience training, fine-tuning, and aligning LLMs using Reinforcement Learning and Reinforcement Fine-Tuning (RFT) techniques.
  • Proactive and collaborative approach with the ability to work autonomously.
  • Passion for building cutting-edge AI products and solving challenging technical problems.


Bonus Points:
  • Proficiency in Golang or Python for large-scale, production-level services and PyTorch.
  • Contributions to open-source AI projects such as vLLM or similar frameworks.
  • Performance optimizations on GPU systems and inference frameworks.


Benefits:
  • Competitive compensation
  • Restricted Stock Units
  • Paid time off & paid holidays
  • Comprehensive health, dental & vision insurance
  • Employer contributions to HSA account
  • Paid parental leave
  • Paid life insurance, short-term and long-term disability
  • Professional development & tuition reimbursement
  • Mental health & wellness support
  • Commuter benefits (parking & transit)
  • Cell phone stipend
  • 401(k) Retirement plan with company match up to 4% of salary
  • Volunteer time off


Compensation Range

Compensation will be paid in the range of up to $208,725 - $279,565 + Bonus. Restricted Stock Units are included in all offers. Compensation to be determined by the applicants knowledge, education, and abilities, as well as internal equity and alignment with market data.

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