Pinned Tweet
Fab2
@fab2
Jul 4
Building a great team.

fab2.com/careers
Sam Zeloof
@szeloof
Jul 4
New name, same mission.

Atomic Semi is now Fab2.

Fab2 prints chips and fabs
fab2.com
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Fab2 retweeted
Sam Zeloof
@szeloof
Oct 8
Love your work
@fab2
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Fab2
@fab2
Oct 8
Fab2 prints tools that print chips.
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Fab2
@fab2
Sep 8
Fab2 raised a $500M series A at $3.7B valuation

We have great investors
And we love to print chips and fabs.

Join us .
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Fab2 retweeted
Jim Keller
@jimkxa
Jul 4
.@fab2 fabs fabs, fabs printers
prints masks, prints chips
makes everything
Atomic Semi is now @fab2

fab2.com
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Fab2 retweeted
Sam Zeloof
@szeloof
Apr 27
I’m thankful for 4 years in California .
But, the Next Phase is in Texas.

We shift our hiring focus to build huge operations in Austin, Texas.

Join us ! The team is really great. @fab2

New 120,000 square feet HQ for R&D and production:
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Fab2
@fab2
Apr 20
We are building Atomic Studio to match the speed of our fab. It’s fast, browser-based, and collaborative. Layout, schematic, and simulation.

Here’s a side by side of Studio (left) and Klayout (right) moving through the same file.
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Sam Zeloof
@szeloof
Apr 16
Replying to @BobAdamsEE
@BobAdamsEE Hiring in Austin for all roles too
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Fab2
@fab2
Apr 15
Dots and lines
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Fab2
@fab2
Mar 31
Plasma testing
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Fab2
@fab2
Mar 27
Scanning in 3 dimensions
Fab2
@fab2
Mar 26
We do demos every week at Atomic Semi, we’ll start show you some on here too
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Fab2
@fab2
Mar 26
We do demos every week at Atomic Semi, we’ll start show you some on here too
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Fab2
@fab2
Feb 25
We talked to a few hundred students at Waterloo and CMU this week about building small, fast semiconductor fabs. Interns build the hardware and software tools in our fab. You get a credit card, space in our lab, machine shop access, and great mentors. The rest is up to you.
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Fab2
@fab2
24 Dec 2025
This year we’re aiming for 20% of company to be interns and >50% conversion rate to Full Time Engineer.

Anton built Fab tools
Christine wrote firmware to make them work
Bilal is building an amazing laser

Thanks for the long hours and all the inventions

Next batch of 15 in Jan.
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Explosions&Fire@Explosions_Fire
12 Aug 2025
A highlight of my recent US visit was finally meeting @szeloof and getting a bit of a tour behind the curtain at @fab2. Truly incredible stuff, absolutely going to change the world
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Fab2
@fab2
2 Sep 2025
We're building something with Rust + WGPU, + billions of polygons, field simulations, fast multiplayer sync, constraints, auto-routing, lots of graphs, etc at Atomic Semi right now.
Alex Balfanz
@badccvoid
1 Sep 2025
@computerender i'm building something with Rust + WGPU, + billions of polygons, field simulations, fast multiplayer sync, constraints, auto-routing, lots of graphs, etc @fab2 right now. Would love to pick your brain, or maybe you'd find it interesting to work on? :)
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Sam Zeloof
@szeloof
23 Jun 2025
More Mechanical Engineers
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Fab2
@fab2
10 Jul 2025
Building a great team

atomicsemi.com/careers/
Sam Zeloof
@szeloof
10 Jul 2025
We’re gonna do it

We’re gonna lay it down atom by atom

But we need you @fab2
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Fab2 retweeted
Sam Zeloof
@szeloof
23 Jun 2025
Software defined fab
Fab in your browser
Chips in a day
Chips every day
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Sam Zeloof
@szeloof
24 Mar 2025
We make it ourselves
And make the machine to make it.
Want to join?

Hiring EE, ME, Software , process engineers. We made the machine that puts atoms there, it’s laptop sized and draws 90 watts . Now we’re automating and building 10.

Zoom in ,they’re not pixels
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