Zach Nussbaum
Senior Software Engineer at Microsoft
New York, New York, United States
Summary
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Rockstar🎓
Top SchoolZach Nussbaum is a senior software engineer and ML practitioner in New York with eight years of experience building production-ready machine learning systems and developer tooling. He’s led embedding and multimodal model development at Nomic AI and implemented core training and data pipelines for the widely used GPT4All project, improving generation behavior, multi-epoch training, and optimizer/accumulation support. His background spans startups and large companies—shipping scalable NLP solutions at TopStonks, ML infrastructure at Amazon, and applied research roles before joining Microsoft Research AI Frontiers. Zach combines hands-on model engineering with production deployment experience, often optimizing pipelines for cost and latency at scale. Colleagues would describe him as pragmatic and detail-oriented, comfortable moving between data engineering, model training, and systems integration.
8 years of coding experience
6 years of employment as a software developer
Bachelor of Science - BS, Computer Science, Bachelor of Science - BS, Computer Science at Davidson College
Stackoverflow
11reputation
82kreached
2answers
1question
Github Skills (14)
data-preprocessing10
tokenize10
pytorch10
machine-learning10
tokenizer10
python10
gradient9
adam9
django-templates6
opencv6
eclipse6
django-views6
django6
java6
Programming languages (8)
Github contributions (5)
nomic-ai/gpt4all
Mar 2023 - Oct 2024
GPT4All: Run Local LLMs on Any Device. Open-source and available for commercial use.
Role in this project:
ML Engineer
ML EngineerContributions:18 reviews, 18 PRs, 98 pushes in 1 year 6 months
Contributions summary:Zach implemented the training and data preparation pipeline for a causal language model, including data cleaning, tokenization, and the integration of special tokens. They addressed issues with the model's generation capabilities, specifically by modifying the generation process, and fixed issues related to prompt cutoff. Furthermore, the user added support for multi-epoch training, saving, and logging while also incorporating gradient accumulation and AdamW optimization.
gpt4allllm-inferenceai-chat
zanussbaum/nodelist-inflator
Jan 2023 - Feb 2025
CLI tool to easily expand a list of hostnames (which include brackets) and write to a hosttile
Contributions:4 releases, 1 PR, 8 pushes in 2 years 1 month
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