Senior Open-Weight LLM Engineer — Fully Remote Impact

EverAI Limited; Polska; Hybride; PLN 466 000 - 700 000; Plein temps

Avantages offerts par ce poste

Fully remote work

4 weeks PTO per year

Learning budget

Company laptop & equipment

AI tools access

Résumé du poste

EverAI Limited is hiring for a role that powers the world's largest AI companionship platform. You will fine-tune open-weight LLMs and drive improvements across personalization, multilingual behavior, and safety, working with data, post-training, evals, and production systems.

This is a fully remote, international position with a strong emphasis on production-quality workflows and scalable experimentation. You will collaborate closely with data science, product, and DevOps teams to push models

Qualifications

• You've personally 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 an experimental feature.
• Fine-tuning is central to your experience.
• Strong Python, PyTorch and Hugging Face skills with hands-on GPU training and debugging.
• You build data and evals yourself and drive decisions from evidence.
• You take work beyond notebooks into production.
• You autonomously use AI tools in engineering work.
• You are comfortable with uncensored models and explicit NSFW content for moderation development.

Responsabilités

• Fine-tune open-weight LLMs using SFT, LoRA/QLoRA and post-training methods such as DPO and GRPO.
• Diagnose model failures and turn them into experiments, deciding data, post-training, prompting or classifiers.
• Build training data and evals that shape next training iterations.
• 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 to make experiments faster, easier to compare, and more reproducible.

Connaissances

Post-trained LLMs

Python

PyTorch

Hugging Face

Data & evals

Production deployment

AI tooling daily use

Outils

PyTorch

Hugging Face

Description du poste

EverAI Limited is hiring for a role that powers the world's largest AI companionship platform. You will fine-tune open-weight LLMs and drive improvements across personalization, multilingual behavior, and safety, working with data, post-training, evals, and production systems.

This is a fully remote, international position with a strong emphasis on production-quality workflows and scalable experimentation. You will collaborate closely with data science, product, and DevOps teams to push models