Facts
as of Nov 15, 2026
MatX is a semiconductor startup based in Mountain View, California that designs high-throughput chips for training and serving large language models for frontier AI labs. Its MatX One chip targets training, reinforcement learning and inference of large dense and mixture-of-experts models, pairing on-chip SRAM for weights with HBM for long context and large scale-up interconnect, and it is backed by Jane Street, Spark Capital, Situational Awareness LP, Triatomic Capital and the fund of Nat Friedman and Daniel Gross. It hires silicon architects, design verification and validation engineers, kernel and system software engineers, hardware engineers and AI tooling staff.
It is hiring: 41 open roles, 6 of them posted in the last 30 days. Its stated pay is 30% above the market estimate for the same roles.
- Legal name
- MatX Inc.
- Headquarters
- Mountain View, United States
- Founded
- 2023
- Employees
- 85US Form 5500 (plan participants) · Dec 2025 · +73% in a year
- Open roles
- 41Alion job postings
- Register numbers
- NAME matx inc
- Website
- matx.com
As of Nov 15, 2026, Alion lists 41 open roles at MatX. MatX is headquartered in Mountain View, United States. It was founded in 2023. It has raised $619.9M in 3 funding rounds. The latest round is Venture - Series Unknown of $500M, announced in 2026. The median pay stated in its open roles is $275k, across 39 postings that state pay.
Sources: company registers, GLEIF, Wikidata, the company's site, Alion job postingsReport a mistake
What the registers and the postings say about this employer.
Legal entity active
MatX Inc.
Not checked
Postings are real
Alion truth index: B
75/100
Ghost roles
re-checked against its careers site
0%
Sanctions lists
OFAC SDN, EU consolidated
No match
Phishing reports
OpenPhish, Phishing.Database
None
Layoff notices
US WARN notices on file
None
Sources: company registers, the Alion truth index, OFAC and EU sanctions lists, US WARN notices
Hiring steadily, with new roles every week.
Hardware is the largest family, 21 of open roles.
6Posted in 30 days15% of open roles are fresh
0%Remote roles0 of 41
23Roles in AI56% of open roles
1Hiring offices
Can they hire you from United States?by your location
Likely
53 open roles are in your country: you apply locally, no move needed.
United States53On site
Israel1On site
Remote, from elsewhere0Rare
No posting offers visa sponsorship. Remote roles: 0.
Time to fillmedian days to close a role
MatX36 days
Market, same roles47 days
Alion signals0-100
Demand99
Pay39
Your chance62
How badly they need people, whether they pay, how realistic getting in is.
Open roles over time−100%
Sep 21This week
Open roles a week: 44 then, 0 now
Are the postings real?
B
75 / 100MatX scores B on the Alion truth index (A is best, E worst), measured over 16 open roles re-checked against its own hiring board: 0% look like ghost listings, 100% have gone stale and 0% are the same role posted again. Its roles close in a median of 36 days.
Ghost roles0%
Gone stale100%
Reposted0%
Where the openings areshare of open roles · trend
Hardware21▲
DevOps13▼
Backend10▼
HR10▼
Operations10▲
Industrial Engineering10▼
Degree asked
Bachelor's Degree 100%
Experience asked: 6.8 years on average, in 23 postings. 5 postings state a degree.
Benefits named in postingsshare of open roles
Professional development41100%
Vision insurance41100%
Internet reimbursement41100%
Life insurance41100%
401k plan41100%
Parental leave41100%
Equity4098%
Apple Macbook12%
Company events12%
Contract type
Full-Time 39Contract 1Internship 1
Visa sponsorship: none statedRelocation: none stated
Source: the company's careers site, read by Alion several times a day; market medians from all open roles of the same family
Pays 30% above the market estimate for the same roles.
$275kMedianmarket estimate $212k
$275k – $275kTypical rangeUSD a year
$400kHighest paying roleContract Manager
Pay by levelmiddle half of stated pay, median marked · dashed: market median $212k
Junior3$220k$170k – $220k
Senior12$275k$275k – $400k
Staff+7$275k
$0$113k$225k$338k$450k
Source: the pay stated in the company's postings, normalised to USD a year
Named in the work visa registers of United States.
8 ▲ 14%H-1B filings in 12 months
$206kMedian offered salary
40Open roles in United States
In the register as MatX Inc., Covina, CA (+1 more)
Other sponsors in the same field
US Department of Labor · latest filing Jun 25, 2026
Footprint
Hiring in 1 city in 1 country.
1Cities
1Countries
Mountain ViewBusiest site
Source: office addresses in postings and company registers
Ranked #3 by open roles among its 11 closest peers.
Source: Alion's similar-companies engine (industry segments, technologies, headquarters country, size)
Financials
Funding rounds, investors and revenue on record.
$619.9MTotal raised
Venture - Series UnknownLatest round
3Rounds and grants
Money by yearUSD, rounds and grants
2026$500M1 record
2024$95M1 record
2023$24.9M1 record
Largest rounds and grants
Sources: funding announcements, grant and company registers
Technologies named in job postings at MatX over the last 12 months, by layer, with the share of postings for each.
82Technologies in use
54Postings analysed
70/100Stack modernityAI adopter
Sign in to see how your skills match this stackSign In
Source: the technologies named in the company's postings and on its site
Milestones
2025
Team of 85 was 49 · US Form 5500 (plan participants)
Each milestone is dated by its source: registers, filings, the press
Newsroom
top 2%Web presenceof 133.2M domains by links, Common Crawl
5Hacker News storiesbest: 55 points
Sep 222026
News · YahooFinance
The London Company, an investment management company, released its second-quarter 2026 investor letter for its
Sep 42026
News · Crypto Briefing
Coatue Management is in talks to form a multibillion-dollar joint venture with AI chip startup MatX to finance chip purchases ahead of its 2027
Feb 262026
News · Pulse 2.0
MatX, an AI chip startup founded by former Google hardware engineers, announced that it has raised a $500 million Series B funding round to complete development and scale manufac…
Feb 32026
News · MatX
Quantizing attention improves efficiency on two fronts: the model has higher compute throughput, and loads fewer bytes per key/value. However, training with blo
Sources: the outlets named on each headline, each story once
