Career
CoreWeave
General Manager of Weights and Biases
Responsibilities
Building tools for AI developers
Platform
Resources
Pricing
General Manager of Weights and Biases / CoreWeave
Lukas Biewald is a prominent figure in the AI and machine learning industry, currently serving as the General Manager of Weights and Biases at CoreWeave. He is the co-founder and former CEO of Weights & Biases, a company providing developer tools for AI, which was acquired by CoreWeave. Biewald also co-founded Figure Eight (formerly CrowdFlower), an ML training data labeling company that was sold to Appen, and is an active angel investor in various AI and tech startups.
General Manager of Weights and Biases
Building tools for AI developers
Angel Investor
Investments in Runway.ai, Lambda Labs, Modal Labs, Exa, Clickhouse, Substack, Juicebox, Llama Index, Axiom Bio, Parsed, Replicate, Rill Data, Softmax, Sophist, Twelve Labs, Chartable, Marimo, Additive
Founder, CEO
Building tools for ML practitioners.
Founder, CEO
ML training data labeling company formerly known as CrowdFlower. Sold to Appen (ASX:APX).
Senior Scientist
Built search engine relevance testing framework and methodology.
Led team in charge of the search engine ranking, selection and summarization algorithm.
Relevance Engineer, Engineering Manager
Build and deployed ML to improve the web search ranking function for international markets, including Japan, Germany, UK, Korea, France, and emerging markets.
Research Assistant
NLP research with Daphne Koller.
Engineer
Built interactive front end for education software company. Designed and built a statistical system from tracking student understanding and evaluation.
MS
MS - Computer Science
BS
BS - Mathematics
Core technical and professional competencies inferred from career history and entrepreneurial ventures.
Machine Learning
Artificial Intelligence
NLP
Data Mining
Distributed Systems
Scalability
Algorithms
Information Retrieval
Python
Ruby
Hadoop
MapReduce
Entrepreneurship
Venture Capital
Angel Investing
Start-ups
Strategic Partnerships
Product Vision
Team Management
Business Development
Search Engine Ranking
Data Analysis
Statistics
Crowdsourcing
MLOps
Developer Tools
Artificial Intelligence, Machine Learning Tools, Cloud Computing Infrastructure
Venture Capital, Data Labeling, Search Technology
Visionary, Entrepreneurial, Data-Driven, Technical Leader
AI Infrastructure, Developer Experience, Scaling Startups
Male 75.0%, Female 25.0%
25-34 (45.0%), 35-54 (30.0%), 18-24 (15.0%)
US (40.0%), IN (15.0%), GB (10.0%), CA (5.0%)
San Francisco (5.0%), New York (3.0%), London (2.0%)
24.5K followers
A factual summary of Lukas Biewald's career, focusing on his founding roles and current executive position following acquisitions.
Weights & Biases was acquired by CoreWeave in October 2025, following its founding in January 2018.
Figure Eight, which he co-founded in December 2007, was sold to Appen in March 2019.
He is an active angel investor with a portfolio of 17+ investments in various AI and tech startups.
As of the latest data, his Twitter/X profile has 24.5K followers, and his LinkedIn profile has 14.6K followers.