Cinder
cinder.ai
Actively hiring
Workflow & Process Automation (RPA, BPM)
Fraud Detection
As featured in
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Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$12.8M
1 round on record
Latest round
$12.8M
Venture round · Nov 2022 · 3 yr ago
Team
51-200
employees, estimated range
Hiring now
7
+2 posted in 30 days
Backers
4
Y Combinator, Radical Ventures
The money's age
Long since its last round
46 months since the last round · and hiring
Momentum
36/100
hiring for its size, a new city, in the news
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Nov 18, 2022
Raised a round Venture round $12.8M · SEC Form D
Jan 2022
Went through Y Combinator
2021
Founded
Tractionpublic signals, read monthly
Web presence
top 6%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Nov 2022 | $12.8M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | Cinder Technologies, Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Philip BrennanExecutive Officer, DirectorSEC Form D
Glen WiseExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
Y Combinator 
Radical Ventures 
Accel 
Mozilla Ventures Investors in similar startupsfunds that back the companies most like this one
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News
gamescom 2026 Cinder City Preview: A Free-to-Play Contender
We were able to sit down with Big Fire Games and check out their free-to-play shooter, Cinder City, at Gamescom 2026.
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Report
The Cinder Dial Three.js Cinder Forge
The Cinder Dial is an interactive Three.js/WebGL forge where metallic cinders rebuild into gears, dials, turbines, orreries, and molten mechanical forms.
Read more
Report
Cinder CSI vs Ceph RBD CSI in Kubernetes: An Analysis of Persistent Volume Lifecycle Performance on Rackspace Spot
This article investigates why some Kubernetes storage classes on Rackspace Spot attach volumes faster than others. Users have occasionally reported Pods stuck in Pending due to PVC attachment delays. By examining the architecture of Cinder CSI and Ceph CS
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Report
We found North Korean engineers in our application pile. Here's what our ex-CIA co founders did about it.
Cinder is part of a growing list of US-based tech companies that encounter engineering applicants who are actually suspected North Korean nationals. Here's what we're doing about it.
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Report
Lazy is the new fast: How Lazy Imports and Cinder accelerate machine learning at Meta
At Meta, the quest for faster model training has yielded an exciting milestone: the adoption of Lazy Imports and the Python Cinder runtime. The outcome? Up to 40 percent time to first batch (TTFB) …
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Report
The Sea to Summit Cinder Quilt is the perfect companion for ultralight, ultra-warm adventures
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Report
Writing a symbolizer for the Cinder JIT
Adding more names to debug information is always helpful.
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Report
How we use binary search to find compiler bugs
Bisecting helps compiler developers find and fix their bugs.
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Report
Python Lazy Imports With Cinder
Python is widely touted as one of the most developer-friendly languages, thanks to the fast feedback loop that comes from not needing to compile.
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Report
How the Cinder JIT's function inliner helps us optimize Instagram
This blog focuses on Cinder's JIT compiler and its new function inliner and how it helps us speed up our production application on Instagram.
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Report
Show more news
Tech stack
Technologies named in job postings at Cinder over the last 12 months, by layer, with the share of postings for each.
Technologies in use
26
Postings analysed
6
Stack modernity
90/100AI adopter
Languages
Python
JavaScript
SQL
TypeScript
Frameworks & libraries
Bootstrap
LangChain
PyTorch
Scikit-learn
Cloud & platforms
Figma
AWS
Databricks
AI & ML
Claude
LLM
Sign in to see how your skills match this stack
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Full Cinder tech stack
26 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$220k
Typical range
$170k – $315k
Open positions
7
6
Jobs
Middle
16.7%
Senior
66.7%
Staff
16.7%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Middle | 1 | $192k | $192k |
| Senior | 4 | $240k | $175k – $275k |
| Staff | 1 | $315k | $315k |
Highest paying role
Engineering Manager - Core Infra
$315k
Normalized to USD per year
All salaries at Cinder
By role, level and city, against the market · 7 jobs with pay
People
Philip Brennan
Executive Officer, Director
Glen Wise
Executive Officer, Director
Sara Ittelson
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
70/100
Growing
Open positions
7
2 opened / 1 closed in 30 days
Median time-to-fill
717 days
faster than 4% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
AI/ML
17% ▼
Product
17% ▼
Design
17% ▼
Finance
17% ▼
Marketing
17% ▲
Solutions
17% ▲
Activity Timeline
New location: London
Oct 2026
Added TypeScript to stack
Sep 2026
Added SQL to stack
Sep 2026
Added React Query to stack
Sep 2026
Added Red Teaming to stack
Sep 2026
Added Fine-tuning to stack
Sep 2026
Added Machine Learning to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
2
Hiring now
2
Countries
2
Busiest office
New York
Loading the map
Headquarters
Builds here
Office with open vacancies
Tap a pin for the office
New York
United States
HQ
8 open roles 5 posted in 90 days 25% engineering 50-200 est. staff $239k Avg Salary
hires for AI/ML, Backend, Leadership
London
United Kingdom
Engineering / R&D
1 open roles 1 posted in 90 days 10-50 est. staff $192k Avg Salary
hires for Solutions
Jobs
$152k – $192k per year • Hybrid • Full-Time • 4+ years exp • Master's Degree • London
Python
JavaScript
TypeScript
SQL
AI Agents
Frontend
GraphQL
React.js
React Query
Management
Slack
Apply
$220k – $260k per year • Hybrid • Full-Time • 5+ years exp • New York
Python
JavaScript
Databricks
AI/ML
LangChain
XGBoost
Scikit-learn
AI Agents
PyTorch
LLM
LLM Evaluation
Machine Learning
Frontend
Bootstrap
DevOps
Terraform
CI/CD
AWS
Apply
$190k – $220k per year • In office • Full-Time • 6+ years exp • New York
Cursor
Claude
AI Agents
OpenAI Codex
Design
Figma
Apply
$250k – $275k per year • In office • Full-Time • 5+ years exp • New York
AI Agents
Apply
$275k – $315k per year • Hybrid • Full-Time • 8+ years exp • New York
AI Agents
DevOps
CI/CD
Management
Slack
Apply
Financials
Total raised
$12.8M
Latest round
Venture - Series Unknown
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Venture - Series Unknown | 2022 | $12.8M | Details |