Senior Applied ML Engineer

<div class="content-intro"><div> <div> <div class="gmail_quote"> <div> <div><span id="m_1770241969069985273m_-2746164444908759431gmail-docs-internal-guid-131e4fb0-7fff-b4e9-ff50-e8cf32449b1b">CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Learn more at&nbsp;<a href="http://www.coreweave.com/" target="_blank" data-saferedirecturl="https://www.google.com/url?q=http://www.coreweave.com&amp;source=gmail&amp;ust=1762613132717000&amp;usg=AOvVaw3D-UOhNaqEvF5BEWxjYyAU">www.coreweave.com</a>.</span></div> </div> </div> </div> </div></div><p><strong>Our Team&nbsp;</strong></p> <p>The CRAFT (Capabilities, Routing, Adaptation &amp; Fine-Tuning) team at CoreWeave is building tools to help agents <strong>learn from experience</strong>. This is a critical step to make agents reliable enough to perform long tasks autonomously, in the same way human employees are. We’re systematically identifying and solving the major bottlenecks between today’s tech and those future self-improving agents. So far, we’ve:&nbsp;</p> <ul> <li>Released <a href="https://github.com/openpipe/art">ART</a>, the easiest library for getting started with RL.&nbsp;</li> <li>Developed <a href="https://news.ycombinator.com/item?id=44535078">RULER,</a> a general-purpose reward function that works across many diverse tasks.&nbsp;</li> <li>Built <a href="https://wandb.ai/site/serverless-rl/">Serverless RL</a>, an elegant API that gives RL practitioners full control over their data, environment, and reward function while letting them outsource the headaches of managing GPU in