cmux
cmux.com
Actively hiring
View 3 jobs
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Overview
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Team
51-200
employees, estimated range
Hiring now
3
+3 posted in 30 days
Backers
2
Y Combinator, Scribble Ventures
Momentum
40/100
hiring for its size
Last sign of life
this month
a posting or a news item
Tractionpublic signals, read monthly
Web presence
top 2%
of 133.2M domains by links, Common Crawl
Hacker News stories
2
best: 2 points
Backed byfrom the funds' portfolios and accelerator catalogs
Y Combinator 
Scribble Ventures Similar startupsby what they do, their industry and backers
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Tech stack
Technologies named in job postings at cmux over the last 12 months, by layer, with the share of postings for each.
Technologies in use
9
Postings analysed
3
Stack modernity
80/100
Languages
Zig
C++
Rust
Swift
Cloud & platforms
GitHub
Linux
Windows
Sign in to see how your skills match this stack
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Full cmux tech stack
9 technologies · by team · pay by technology · changes · similar stacks
Growth
Hiring Momentum
83/100
Scaling fast
Open positions
3
3 opened / 0 closed in 30 days
ATS activity
Every ~5 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.
Backend
67% ▲
Design
33% ▲
Activity Timeline
Added Zig to stack
Sep 2026
Added Windows to stack
Sep 2026
Added Swift to stack
Sep 2026
Added Rust to stack
Sep 2026
Added Linux to stack
Sep 2026
Added GitHub to stack
Sep 2026
Added Ghostty to stack
Sep 2026
Added C++ to stack
Sep 2026
Added AI Agents to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
San Francisco
San Francisco
United States
Regional office
3 open roles 3 posted in 90 days 67% engineering 50-200 est. staff $170k Avg Salary
hires for Backend, Design
Jobs
$130k – $170k per year • Equity 0.5–1.5% • In office • Full-Time • San Francisco
Rust
C++
Zig
Ghostty
AI/ML
AI Agents
DevOps
GitHub
Linux
Windows
Apply
$130k – $170k per year • Equity 0.5–1.5% • In office • Full-Time • San Francisco
Zig
Ghostty
AI/ML
AI Agents
DevOps
GitHub
Linux
Windows
Apply
$130k – $170k per year • Equity 0.5–1.5% • In office • Full-Time • San Francisco
Rust
C++
Swift
Zig
Ghostty
AI/ML
AI Agents
DevOps
GitHub
Linux
Windows
Apply