Founding cohort · ten seats · applications close Aug 29apply →

Helping developers turn their skills into businesses

Your salary is only one way your skills can make money.

I'll help you discover the others: consulting, products, SaaS, and the order to climb them. With the real numbers from my own thirteen years.

Figure out which business is right for you with our free guide, sent when you sign up.

Thibault “Tibo” Denizet$19k/mo from consulting

// why now

AI changed how software gets built.

That creates more opportunities than ever for developers willing to think beyond code.

- the squeeze

The job is changing under you. Hiring slowed, junior roles thinned out, and the thing you spent a decade getting good at is now partly automated.

+ the opening

One developer with AI can research, build, launch, market, and support a business that used to need a team.

So what is scarce now is not the building. It is knowing what to build, who it is for, and how to get it in front of them.

That is the half nobody taught you. It is also the half that is now worth the most.

$ ./apply --cohort=founding · ten seats · starts september 7

Get your first customer in 8 weeks.

Full Stack Founder is a live cohort for developers who can build anything and have never sold anything. Eight weeks from picking your path to an offer that is live and pitched to real buyers.

$1,500 founding · the price goes up after this oneincludes the AI Productivity Blueprint ($199)numbers published, wins and zeros

$ git log --reverse my-career

Thirteen years, ten commits, 10x revenue

a3f9e12initial commit
2013 · first dev job, Bangkok · $1,600/mo while friends in France made double
7c24b81feat: modular-rails
2015 · first book, launched on samurails, my first site · $2,500 launch week, more than a month's salary
e81d4f0feat: master-ruby-web-apis
2017 · second book · $10,000 launch week off a few hundred subscribers
c9d3a44feat: freelance --rate=$20/hr
2017 · month two: a $5,000 gem contract, two weeks of work · samurails becomes devblast
b5a91c3pivot: omisego --role=lead
2017 · joined OmiseGO, a blockchain company · three years, left as Director of Engineering
d7e2f18incident: company sold, everyone fired
2020 · was already freelancing on the side · went full-time without missing a month
deadbeerevert: saas-attempt --all
over the years · three, maybe four starts, none went live · building was never the hard part. finishing was.
f42a7d9fork: consulting --full-time
2024 · doubled the rate, packaged the offers · consulting became the engine
e4c8b21rename: devblast → devmystify
2025 · the old brand resurrected for a new mission
f9a2c1e (HEAD -> main)feat: help developers start businesses
2026 · AI changed the game · from teaching code to teaching the business half · you are here

author: Thibault "Tibo" Denizet

$ git branch --list next-2-years

the plan: 10x it again, building in public. every number published here.

* productized-consulting

  courses-and-coaching

  saas-launch (in public this time)

  youtube-channel (diversification)

~/receipts · live numbers, not testimonials

The dashboard I actually look at

last updated: 2026-08 · refreshed monthly

10x monthly revenue in 10 years

$1,600 → $19,000/mo

'13 job
'15 books
'17 freelance
'20 +80% raise
'26 consulting

Each one leveraged the next: books got the contracts, contracts priced the raise, the raise bought runway.

consulting · today
$19k/mo
as of this month
book launch weeks
$2.5k · $10k
2015 and 2017, self-published
newsletter
0+
developers, 40% open rate
course sales
3
shipped the wrong rung first. lesson logged.

$ tail honesty.log → the red one stays on the board. if I only showed you green, you should not trust the green.

if (you.canBuild && !you.canSell) {
devmystify.subscribe(you.email); // one email a week, real numbers
}

// code review · changes approved

Approved, no changes requested

Ddenys-m · senior full-stack✓ approved

"Great course for both beginners and experienced AI users. Practical tasks you can try right away."

rated 5.0 · verified buyer · AI Productivity Blueprint

Ffrancois-v · software dev✓ approved

"Learned so much from the examples and explanations. I will use this book as a reference guide."

rated 5.0 · verified buyer · Master Ruby Web APIs

Mmederic-p · software engineer✓ approved

"A gold mine of useful information and best practices. Can't wait to see more from this author."

rated 5.0 · verified buyer · Master Ruby Web APIs

> one email a week, real numbers

The other half of the job

You can already build. The free ebook answers the rest: which business is right for you, the real numbers behind each path, and the ladder to climb without quitting your job.

join 2,700+ developers · unsubscribe anytime · no spam, only receipts

⎇ main*2,700+ subscribers
Devmystify