He is recognized for his contributions to machine learning and as the CEO and co-founder of Weights & Biases[1][2][3], a company that builds developer tools for AI.

He attended Cambridge Rindge and Latin School[6] and later earned both a Bachelor's and Master's degree in Computer science from Stanford University[2][7].

He later joined Powerset[8], a natural language search technology company, as their Senior Scientist, which was acquired by Microsoft in 2008 for an estimated $100M.

[9][10] In 2007, Biewald co-founded Figure Eight (formerly CrowdFlower), a data labeling and crowdsourcing company that created datasets for training machine learning models.

[12] The company provides tools for tracking machine learning experiments, model management, and collaborative AI and LLM app development.