Senior AI LLM Engineer — Remote, Open-Weight Fine-Tuning

Jobicy; United States; Remote; USD 120,000 - 190,000; Full time

Benefits offered by this job

4 weeks PTO per year

Annual in-person gathering

Health & wellness budget

Co-working space budget

Learning budget

Company laptop + equipment budget

Premium AI tools access

Job summary

EverAI is building the future of AI companionship with a global, fully remote team. We’re seeking a role focused on advancing open-weight LLMs that power a consumer-scale platform, with emphasis on personalization, multilingual behavior, and robust evaluation.

You’ll work across data, post-training, evals, and model behavior, taking ideas from failure analysis to production. You will join a compact AI team led by the LLM Tech Lead, collaborating with CTO, Product, Web and DevOps.

Qualifications

• You’ve personally post-trained open-weight LLMs for a user-facing product and shipped them to production.
• 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 yourself and make evidence-based decisions.
• You take work beyond notebooks into production.
• You use AI tools daily in your engineering work.
• You are comfortable with uncensored models and NSFW content for moderation development.

Responsibilities

• Fine-tune open-weight LLMs using SFT, LoRA/QLoRA and post-training methods.
• Diagnose model failures and turn them into experiments; decide data/post-training/prompts/classifiers.
• Build training data and evals that shape what gets trained next.
• Improve model behavior across personalization, consistency, tone and multilingual interactions.
• Ship to production and use real user behavior to guide iterations.
• Speed up the training loop for faster, reproducible experiments.

Skills

Post-training LLMs

Python

PyTorch

Hugging Face

GPU training

Production deployment

AI tooling

Tools

Hugging Face Transformers

GPU acceleration

Job description

EverAI is building the future of AI companionship with a global, fully remote team. We’re seeking a role focused on advancing open-weight LLMs that power a consumer-scale platform, with emphasis on personalization, multilingual behavior, and robust evaluation.

You’ll work across data, post-training, evals, and model behavior, taking ideas from failure analysis to production. You will join a compact AI team led by the LLM Tech Lead, collaborating with CTO, Product, Web and DevOps.