
The data platform for inference. Build, deploy, and iterate faster with Chalk's feature engine.

The data platform for inference. Build, deploy, and iterate faster with Chalk's feature engine.
What: Data platform for AI/ML inference with real-time feature computation and low-latency online serving
Founders: Marc Freed-Finnegan, Elliot Marx, Andy Moreland
Funding: $60M total (Seed $10M; Series A $50M)
Headcount: 83 employees
| Company |
|---|
Productionizing ML inference and low-latency feature serving
Software Development
10,000,000 USD
Announced Dec 12, 2023
50,000,000 USD
Announced May 28, 2025; participation from Triatomic Capital, General Catalyst, Unusual Ventures, and Xfund; reported post-money valuation of $500M
“Led by prominent VC firms including Felicis and General Catalyst with participation from Unusual Ventures, Xfund, and Triatomic Capital”
About Chalk:
Chalk is building the data platform that powers the future of machine learning. We tear down barriers of complexity, latency, and scale that have traditionally constrained ML capabilities. Our platform combines Rust-speed performance with elegant tools that developers love to use. Leading companies depend on Chalk for everything from stopping fraudulent credit card swipes and identity verification to maximizing clean energy capture.
We're a fast-moving, technically elite team composed of Advent of Code winners, former Jane Street quants, and Rust compiler contributors. If you’re excited by infrastructure, performance, and developer experience, you’ll be in good company.
About the Role:
We’re looking for Chalk’s first Technical Writer — someone who can read code like a book and turn complexity into clarity. Your writing will be the first touchpoint for many engineers exploring Chalk and a trusted guide for those building with it.
This is a foundational role with outsized impact. You’ll work closely with engineering, product, and developer advocacy to define our documentation strategy from the ground up. Whether you’re explaining how our symbolic Python interpreter works or guiding a team through real-time feature engineering, your work will make Chalk more accessible, discoverable, and powerful.
What You’ll Do:
What We’re Looking For:
Bonus Points:
Why Chalk
We believe great documentation is part of great product design. If you thrive on clarity, read code like it’s prose, and want to help developers move fast with Chalk — we’d love to hear from you.
Benefits
⚕️Comprehensive medical, dental, and vision insurance
🏦 Flexible Spending Account (FSA), Health Savings Account (HSA)
🦮 Expert Healthcare Guidance
💵 Retirement savings
🎄15 company holidays each year
🏖️15 days of personal time off each year
🚌 Flex Commuter Benefits
🌮 Daily lunch and dinner on Chalk
🥤Office is fully-stocked with drinks and snacks to fuel your work day.
🍽️ Staying late? Dinner is on us
🚖 Staying even later? Grab an Uber / Lyft home on Chalk
Compensation
Chalk offers early team members a generous salary + equity package based on experience and competitive benefits.
Actual compensation awarded to successful candidates will be based on several factors, including market, location, scope of the position and individual qualifications objectively assessed during the interview process.
Our comprehensive total package plays a major role in how we recognize individuals for the impact they will have on Chalk’s growth and us achieving our goals.
Inclusivity
Chalk is an equal-opportunity employer. We value diversity and inclusion and provide reasonable accommodations to anyone needing individualized support.