Chalk

"When you work with mature companies, they don't want to hand their most sensitive data to a random seed-stage SaaS startup." Our co-founder Andrew Moreland explaining why Chalk runs in customer clouds on the Adventures in DevOps podcast. Listen to his breakdown of architectural challenges such as DNS failures in Kubernetes and the million-dollar overhead of choosing the wrong orchestration platform. Full episode and recap on our blog 🎬

MoneyLion serves millions of users across lending, investing, and personal finance — all powered by real-time ML 💸 But their ML workflow was broken. Before: Data scientists prototyped features in notebooks, then waited weeks for engineers to rewrite them in Java for production. With Chalk: Features ship directly from Python to production in hours instead of weeks, powering real-time fraud detection and smart recommendations for millions of users. Full customer story in comments 📖

Congrats to Marc Freed-Finnegan, Elliot Marx & Andrew Moreland - still so much more to come ! cc Nancy Wang

One-minute demo from elvis kahoro on 'chalk diff' — a CLI tool for comparing feature code across branches and deployments. Pull any deployment ID from your dashboard, run 'chalk diff', and see exactly what changed in your feature definitions. Makes ML code reviews and debugging way easier!

Featurestore.org Summit watch party in the Chalk office 📺 The team tuned in earlier this week to catch Chase Haddleton break down how Chalk's Symbolic Python Interpreter makes real-time ML inference work at scale. Stay tuned for the recordings!

another hiring post. looking to build out a few teams across Chalk's GTM org - coast to coast. as always, looking to add incredible SDRs to Chris Studley's powerhouse team. LA and SF office only. too much pipeline is always a good problem to have. opening up additional AE HC across NY/LA/SF to help keep up with the world-class growth marketing and outbound is driving. and lastly, here at chalk, we know content is king so we are adding another developer advocate/evangelist to the GTM team. looking for a die-hard creative comfortable across many channels (video, social, long form, community, IRL etc). help us bring the look and feel of chalk's ergonomics to the wider dev community. as always feel free to DM me or apply directly below (we do look at every application :)

The SF office pedaled through their power cycling class! Turns out we spin up more than just sandboxes. 🚴

"We can develop a new recommendation algorithm in the span of a few days." Whatnot on how Chalk turned speed into scale — and what that unlocked for fraud detection, discovery systems, and beyond.

Welcome Elizabeth Gomes to the Chalk NY team as our Office Manager! 🗽 Elizabeth — who goes by Monica — joins us from New Jersey (proud Rutgers grad!) with a background in hospital administration and hospitality, so she's more than ready for the fast-paced startup life. When she's not keeping the office running smoothly, you'll find her deep in sci-fi and dystopian fiction like many of us at Chalk. Welcome to Chalk, Monica! 👋

"With Chalk, our iteration speed went from days to hours." Verisoul protects fintech, gaming, and SaaS platforms from fake account attacks. But their old infrastructure turned every update into a multi-day project, limiting how quickly they could respond to new attack patterns. They transformed their detection system with Chalk: ⬆️ 10x faster model deployment 🎯 4x more accurate decisions with real-time data 📒 Full auditability — instant explanations for every fraud flag Full story in comments!