Millions of daily users
European football appLed the Stories system end to end: shipped behind feature flags, iterated on A/B results, in front of millions of fans every day.
Tiago Rocha · Mobile Engineering
EST. 2021
Most projects die between the demo and production.
Practice12 years, mostly mobile
StackFlutter · iOS · Android
ReachApps used by millions
Contacttiago@sublimecipher.com
01The problem
demo → production
The demo is the easy part. It has one user and a forgiving audience. Production has millions of users, release trains, review queues and a team that must live with the code. That gap is where I work.
Twelve years of mobile software, across football, fintech, health, government and aviation, is twelve years of watching where that gap opens. It rarely fails at the idea. It fails at the unglamorous part: the flags, the tests, the build times, the handover.
So I sell the unglamorous part, on terms you can hold me to.
02Proof
Evidence, not adjectives
Zero to 1,258 tests · build 4min → under 30s
Swiss construction dataroomArrived to almost no test culture. Five months later: a 26× larger suite, an eight-fold faster build, and conventions the team still runs today.
11 AI commands in daily team use
Engineering toolingCustom commands encoding the team's own conventions: spec writing, test generation, self-review, pipeline diagnosis. Leverage that outlives the engagement.
Holidays, natively, and every deeplink
Major European airlineCurrently building a native holidays experience and leading the app's deeplink architecture.
Biometrics at the border
Airport identity flowsEarlier, a biometric border-control SDK running inside airport identity flows.
Anonymous by design. The numbers carry the claim, and I can speak to any of them on a call.
03How I work
Four terms, in writing
T—01
Fixed price.
Agreed before we start. No day rates, no meter running, no drift.
T—02
One success number.
Agreed in writing before work begins. Both sides watch it.
T—03
A five-second dashboard.
Readable in five seconds. You see what I see, whenever you like.
T—04
Handover.
Yours to run at the end, with or without me.
04Selected work
Names already public
Selected clients: OneFootball, easyJet, Housebar, Wio Business, Nue Life.
Everything else stays anonymous, deliberately.
05About
Tiago Rocha
Twelve years building software, most of it mobile. Football, fintech, health, government, aviation. I lecture Mobile Development at the Universidade dos Açores, and founded Sublime Cipher in 2021.
I don't do hype. I do a number we agree on, a dashboard you can read in five seconds, and software you keep. If that sounds unexciting, good. Production is supposed to be unexciting.
Experience12 years, mostly mobile
PlatformsFlutter · iOS · Android
SectorsFootball · fintech · health · government · aviation
TeachingMobile Development, Universidade dos Açores
CompanySublime Cipher, founded 2021
Emailtiago@sublimecipher.com
06Contact
Reply within one business day
If your project is between the demo and production, let's talk.
Describe the problem in a few sentences. WhatsApp is fastest, I read every message myself, and I reply within one business day, usually much sooner.