Nathan Ruberto

AI for chemical engineering simulation software.
NEXT 36 '26.
Waterloo Chemical Engineering, Toronto.
Intentional over transactional.
Always down to chat.

[Nathan Ruberto @nrubuilder]

@achalksharma Let’s connect!

[Nathan Ruberto @nrubuilder]

@JoinFireLaunch @X Let’s connect!

[Nathan Ruberto @nrubuilder]

@HDIntegrations Yes sir - LinkedIn, Instagram, TikTok, and starting out on Reddit

[Nathan Ruberto @nrubuilder]

7 weeks of building in public.

The demo is live.
The stealth is over.
The DMs are open.

Scariest post I've ever hit "send" on.
Also the most important one.

[Nathan Ruberto @nrubuilder]

https://t.co/EqNdyy2RHf

[Nathan Ruberto @nrubuilder]

Today I'm coming out of stealth.

I've been building Reflux - a natural language interface for chemical engineering simulation software.

The tools that design every oil refinery, chemical plant, ASU, and carbon capture project on earth are running on software built in the 1980s. The simulation engines are powerful. The UX is not.

Engineers spend hours manually configuring parameters, clicking through nested menus, debugging errors that say "simulation did not converge" with zero context on why.

Reflux sits on top of these tools and lets you talk to them.

Type what you want. The system builds the flowsheet, configures the parameters, and runs the simulation. If it fails, it diagnoses why and iterates.

The engineer stays in control. The tedious manual setup goes away.

I'm a chemical engineer. I trained on this software. I know exactly which parts make you want to scream. I'm building the thing I wish I had.

Looking for design partners - engineers who want to shape this. DMs open.

[Nathan Ruberto @nrubuilder]

@sparkle_six yes sir!

[Nathan Ruberto @nrubuilder]

@Whhiiskkey Thank you! I 100% agree - can I ask where you've seen these frustrations? Would love to talk to anyone currently experiencing them.

[Nathan Ruberto @nrubuilder]

@iamideaguy Thank you!!!

[Nathan Ruberto @nrubuilder]

@_tenZdhon_ thanks man! it indeed was a pain. can't believe people have to do it as a part of their day-to-day. that's why i built it!

[Nathan Ruberto @nrubuilder]

@haku14947 Hey Aditi! Thanks for the kind words. If you want to chat more, feel free to throw time on my calendar here: https://t.co/pwZfpFJ94N

[Nathan Ruberto @nrubuilder]

@isaidmeow_ Indeed!

[Nathan Ruberto @nrubuilder]

@gmenichini goin crazyyyyy

[Nathan Ruberto @nrubuilder]

@YioJoshua Automates simulation setup for process engineers!

[Nathan Ruberto @nrubuilder]

@NelsonXLee Thanks Nelson!

[Nathan Ruberto @nrubuilder]

@CrlynBuild Thanks @CrlynBuild !!

[Nathan Ruberto @nrubuilder]

@MathesonStep @cap oooo could be the move

[Nathan Ruberto @nrubuilder]

@geren8te Thanks @geren8te !

[Nathan Ruberto @nrubuilder]

@JustJerry121 depends on the ask - same way that Cursor, CC or Codex would approach a prompt, Reflux does the same. logically. if you want it to troubleshoot errors - it does. if you want it to build - it does. if the build has an error, it keeps the human out of the loop - and fixes it.

[Nathan Ruberto @nrubuilder]

@linkdude2209 @X woah this is really cool - I'll have to make a few site improvements thanks man. I'm a chemical engineer by trade and I experienced the problem first-hand for 5 years, so I'm building what I wish I had. Target is to go to market and be used in industry.

[Nathan Ruberto @nrubuilder]

@NiketanJatwa lets connect