Senior Open-Weight LLM Engineer (Remote)

EverAI Limited; United States; Remote; USD 150,000 - 230,000; Full time

Benefits offered by this job

Remote work

PTO 4 weeks

Annual gathering

Health & Wellness support

Co-working budget

Learning budget

Company laptop

AI tools access

Job summary

EverAI Limited is seeking an AI engineer to advance our self-hosted, fine-tuned LLMs powering a global AI companionship platform. You’ll work with the CTO, Product, Web and DevOps teams to push data, post-training, evals and model behavior from failure analysis to production.

The role tackles personalization, character consistency, multilingual behavior and faster training cycles, with a fully remote team and a track record of rapid scale and category-creating innovation.

Qualifications

• You’ve post-trained open-weight LLMs for a user-facing product and shipped them to production.
• You’ve worked where AI was core to the product or business, not just an experimental side feature.
• Fine-tuning is central to your experience.
• You implement 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’re comfortable working with uncensored models and NSFW content for moderation system development.

Responsibilities

• Fine-tune open-weight LLMs using SFT, LoRA/QLoRA and post-training methods such as DPO and GRPODiagnose model failures and turn them into experiments.
• Decide whether the answer is better data, post-training, prompting or classifiers
• Build training data and evals that directly shape what gets trained next
• Improve model behavior across personalization, consistency, tone, multilingual and group interactions
• Ship to production and use real user behavior to guide the next iteration
• Speed up the training loop so experiments are faster, easier to compare, and more reproducible

Skills

Post-training open-weight LLMs

Python

PyTorch

Hugging Face

Production-ready ML

Tools

GPU training

Open-source LLM tooling

Job description

EverAI Limited is seeking an AI engineer to advance our self-hosted, fine-tuned LLMs powering a global AI companionship platform. You’ll work with the CTO, Product, Web and DevOps teams to push data, post-training, evals and model behavior from failure analysis to production.

The role tackles personalization, character consistency, multilingual behavior and faster training cycles, with a fully remote team and a track record of rapid scale and category-creating innovation.