Data Scientist - Junior/Mid-Senior

the best uncensored roleplaying agent in the world

Role Overview

We’re looking for a Data Scientist (Junior to Mid-Senior level) who will support our LLM projects across the full data pipeline—from building clean datasets and dashboards to fine-tuning models and supporting cross-functional collaboration. You’ll work closely with ML engineers, product teams, and data annotation teams to bring AI solutions to life.

What You’ll Be Doing

ETL and Data Pipeline Development:

• Design and implement data extraction, transformation, and loading (ETL) pipelines.
• Work with structured and unstructured data from various sources.

Data Preparation:

• Clean, label, and organize datasets for training and evaluating LLMs.
• Collaborate with annotation teams to ensure high data quality.

Model Fine-Tuning & Evaluation:

• Support the fine-tuning of LLMs for specific use cases.
• Assist in model evaluation, prompt engineering, and error analysis.

Dashboarding & Reporting:

• Create and maintain internal dashboards to track data quality, model performance, and annotation progress.
• Automate reporting workflows to help stakeholders stay informed.

Team Coordination & Collaboration:

• Communicate effectively with ML engineers, product managers, and data annotators.
• Ensure that data science deliverables align with product and business goals.

Research & Learning:

• Stay current with developments in LLMs, fine-tuning techniques, and the AI ecosystem.
• Share insights with the team and suggest improvements based on new findings.

Qualifications

Required:

• 1–4 years of experience in a data science, ML, or analytics role.
• Proficient in Python and data science libraries (Pandas, NumPy, scikit-learn).
• Experience with SQL and data visualization tools (e.g., Streamlit, Dash, Tableau, or similar).
• Familiarity with machine learning workflows and working with large datasets.
• Strong communication and organizational skills.

Bonus Points For:

• Experience fine-tuning or evaluating large language models (e.g., OpenAI, Hugging Face, LLaMA, Mistral, etc.).
• Knowledge of prompt engineering or generative AI techniques.
• Exposure to tools like Weights & Biases, Airflow, or cloud platforms (AWS, GCP, Azure).
• Previous work with cross-functional or remote teams.
  

Why Join NextDay AI?

• 🌍 Remote-first: Work from anywhere in the world.
• ⏰ Flexible hours: Create a schedule that fits your life.
• 🌴 Unlimited leave: Take the time you need to rest and recharge.
• 🚀 Hands-on with LLMs: Get practical experience with cutting-edge AI systems.
• 🤝 Collaborative culture: Join a supportive, ambitious team working on real-world impact.
• 🌟 Mission-driven: A chance to be part of an exciting mission and an amazing team.

Ready to join us in creating the ultimate uncensored roleplaying agent?