Senior AI Engineer

Imagine enhancing an AI assistant that already lives on Macs — one that truly understands its users, adapts to their habits, and helps them stay focused on what matters most. Eney is MacPaw’s AI companion for macOS, designed to organize, automate, and simplify users’ daily workflows.

Now, we’re taking Eney to the next level — making it smarter, faster, and capable of running advanced LLMs directly on-device. As a Senior AI Engineer , you’ll fine-tune and optimize the latest LLMs using cutting‑edge techniques (LoRA, Q‑LoRA, DPO, GRPO), build scalable ML pipelines, and shape how AI seamlessly integrates into everyday Mac experiences.

MacPaw is a software company that develops and distributes software for macOS and iOS. Today, we have 20 million active users across all our products.

At MacPaw, we believe humans and technology can reach their greatest potential together.

MacPaw is proud to be Ukrainian. The support and development of Ukraine are significant parts of the company’s culture. MacPaw gathers open‑minded people who support each other and aspire to change the world around us.

In this role, you will :

• Train and fine‑tune LLMs (e.g. , LLaMA, Gemma, Qwen) for specialized tasks (such as function calling, charting, parameter parsing) and ensure their effective deployment across diverse environments, including on‑device (MLX)
• Develop and apply model optimization and compression techniques (e.g. , dynamic pruning, quantization) to enable high‑performance on‑device inference
• Conduct rigorous evaluation and benchmarking of LLMs to measure performance, accuracy, and efficiency across different setups
• Adapt LLMs for domain‑specific tasks using techniques such as prompt engineering, adapter‑based fine‑tuning (PEFT), and multi‑modal extensions

Skills you’ll need to bring :

What We Offer :

Wemaintain workplaces for the mobilized Macpawians and provide financial support to colleagues or the families affected by the war. Here, you can also read about the MacPaw Foundation, which intends to help save the lives of Ukrainian defenders and provide relief to as many civilians as possible.

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