Senior AI LLM Engineer — Remote, Personalization Impact

EverAI Limited; United States; Remote; USD 180,000 - 250,000; Full time

Benefits offered by this job

4 weeks PTO per year

Annual in-person gathering

Health & wellness budget: health-ins.

Co-working space budget

Learning budget

Laptop + equipment budget

AI tools access

Fully remote work

Job summary

EverAI Limited is building the next generation of AI companionship at a global scale. You will shape model behavior for hundreds of millions of potential users by fine-tuning open-weight LLMs, evaluating outcomes, and deploying improvements in a fully remote setup.

You will work with a small AI team led by the LLM Tech Lead, collaborating with CTO, Product, Web, and DevOps to drive data, post-training, evals, and model behavior from failure analysis to production.

Qualifications

• You have personally post-trained open-weight LLMs for a user-facing product and shipped them to production.
• You have worked where AI is core to the product or business, not just an experimental feature.
• Fine-tuning is central to your experience.
• Strong Python, PyTorch and Hugging Face with hands-on GPU training and debugging.
• You build data and evals and make decisions from evidence.
• You can take work beyond notebooks into production.
• You use AI tools daily in your engineering work.
• You are comfortable with uncensored models and NSFW content during moderation system evaluation.

Responsibilities

• Fine-tune open-weight LLMs using SFT, LoRA/QLoRA and post-training methods like DPO and GRPOD.
• Determine whether improvements should come from data, post-training, prompting, or classifiers.
• Create training data and evals that guide next-model iterations.
• Improve model behavior in personalization, consistency, tone, multilingual support, and group interactions.
• Ship to production and leverage real user behavior to guide improvements.
• Speed up training loops to make experiments faster and more reproducible.

Skills

Python

PyTorch

Hugging Face

GPU training

Model evaluation

Post-training

Production deployment

Tools

Open-weight LLMs

Job description

EverAI Limited is building the next generation of AI companionship at a global scale. You will shape model behavior for hundreds of millions of potential users by fine-tuning open-weight LLMs, evaluating outcomes, and deploying improvements in a fully remote setup.

You will work with a small AI team led by the LLM Tech Lead, collaborating with CTO, Product, Web, and DevOps to drive data, post-training, evals, and model behavior from failure analysis to production.