Lead AI Model Developer

2 days ago


Remote Kyiv, Czech Republic MacPaw Full time

About Us

MacPaw is a software company that develops and distributes software for macOS and iOS.

We have 20 million active users across all our products.

Our Mission

We believe humans and technology can reach their greatest potential together.

Company Culture

We are proud to be Ukrainian. The support and development of Ukraine are significant parts of our culture.

We gather open-minded people who support each other and aspire to change the world around us.

About the Role

Imagine working on an AI-powered macOS assistant that feels truly intuitive, smart, and seamlessly integrated into users' daily workflows.

We're pushing LLM-powered agents to the next level, and we need a Senior Data Scientist to help us get there.

In this role, you won't just build models—you'll shape the next generation of on-device AI, tuning LLMs to achieve SOTA performance, RAG pipelines, and intelligent agents for real-world applications.

You'll work with top Engineers and Scientists to bring cutting-edge NLP and ML capabilities directly to macOS users.

Your Responsibilities

  • Fine-tune LLMs to achieve state-of-the-art performance
  • Develop and fine-tune LLM-based agents for local task execution
  • Design and build advanced RAG (Retrieval-Augmented Generation) pipelines for improved information retrieval
  • Lead general deep-learning training and experimental initiatives
  • Cooporate with and mentor students from top Ukrainian universities
  • Apply classical NLP techniques (e.g., NER, POS tagging)
  • Set up a testing framework to evaluate agent performance, measure key metrics, and identify optimization opportunities
  • Supervise macOS Engineers to integrate models on device

Requirements

  • NLP, LLM, RAG, LangChain, LangGraph

Tools

.

About You

We offer private healthcare, flexible working hours, international projects, gym, kitchen, free coffee, canteen, shower, free snacks, free beverages, in-house hack days, and modern office space.


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