---
title: "Tim Sweeney"
category: "people"
role: "Principal Engineer"
company: "Weights & Biases by CoreWeave"
linkedin: "https://www.linkedin.com/in/tssweeney"
sourceLabels: ["Official speaker roster", "Official conference schedule"]
---
# Tim Sweeney

## Profile
Principal Engineer at [[weights-and-biases-by-coreweave|Weights & Biases by CoreWeave]].

- [LinkedIn](https://www.linkedin.com/in/tssweeney)

## Biography
Tim Sweeney is a Principal Engineer at [[weights-and-biases-by-coreweave|Weights & Biases by CoreWeave]]. His WF26 main-stage session, "Closing the Loop: An Autonomous AI Research Agent," focuses on autonomous AI research agents and the feedback loops behind them.

## Conference Sessions
- [[2026-06-30-tim-sweeney-closing-the-loop-an-autonomous-ai-research-agent]] — Closing the Loop: An Autonomous AI Research Agent (2026-06-30, 1:30pm-1:50pm)

## Evidence Graph
This evidence graph summarizes how this person appears across the conference source graph: scheduled sessions, linked videos, transcripts, and slide-derived evidence.

### Linked Sessions
- [[2026-06-30-tim-sweeney-closing-the-loop-an-autonomous-ai-research-agent|Closing the Loop: An Autonomous AI Research Agent]]

### Media Signals
- `youtube-4sX_He5c4sI` — 82,600 transcript words; 8 slide-derived text signals
- Transcript signals for `youtube-4sX_He5c4sI`: model, code, models, research, system, well, first, better.
- Slide-derived themes for `youtube-4sX_He5c4sI`: system, prompt, examples, tools, lots, claude, gets, smarter.
- Evidence links for `youtube-4sX_He5c4sI`: [[youtube-4sX_He5c4sI]], [[youtube-4sX_He5c4sI-transcript]], [[youtube-4sX_He5c4sI-slides]], [[youtube-4sX_He5c4sI-dense-slides]], [[youtube-4sX_He5c4sI-reconstructed-slides]]

## Livestream Appearances
- [[2026-06-30-tim-sweeney-closing-the-loop-an-autonomous-ai-research-agent|Closing the Loop: An Autonomous AI Research Agent]] — [watch at 04:38:57](https://www.youtube.com/watch?v=4sX_He5c4sI&t=16737s) in WF2026: Autoresearch & Keynotes (Day 2).