kodjokeyi>_ Say hello

ElectronicsInfraAI

I build systemsvibecoders can't.

Electronics engineer. Inventor. Software builder. Learning to become an operator.

HELLO, I'M HALIS

My first language wasn't code.
It was electricity.

I like machines that cross boundaries: a sensor becoming a message, a piece of software touching the real world, a strange idea surviving long enough to become ordinary.

This page is not a pitch deck. It is a field log—what I made, what I lost, and the few ideas I keep returning to.

01ORIGIN

I started with electrons, not apps.

Electronics engineering was my first way of understanding the world. Transistors, embedded systems, FPGAs, robotics: things where a bad assumption can make smoke.

Software came later. I never saw it as a separate profession—just another material I could use to make an idea real.

02INVENTOR

The ideas were never the weak part.

I built a smart-home system that reached TÜBİTAK-approved investment before the fallout of 2016 ended the company around it. Then came an EEG-controlled wheelchair, pressure-sensitive fabric for finding hardness in breast tissue, and visible-light communication for factory machines.

They did not die because the ideas were bad. They died because the inventor had no capital, distribution, or operator beside him. That took me embarrassingly long to understand.

03SOFTWARE

Then software became another material.

I helped build Leesman into a serious global platform, back when writing the software was still the hard part. It taught me how systems behave under real scale, real users, and real consequences.

Now software is cheap. Good. That frees me to return to the whole machine: electronics, infrastructure, interfaces, distribution, and whatever physical thing sits at the other end.

04NOW

The inventor is learning to operate.

Today I design the system beyond the idea and the product: distribution, capital, timing, and the operating discipline that turns a strong build into a durable company.

This chapter is straightforward: combine the inventor's technical depth with the operator's muscle, then give ambitious systems room to compound.

LIVE SIGNAL / GITHUB

The work leaves a trace.

Most of it happens quietly. The commits are the residue.

Contribution Activity

Contribution Graph

No grand justification required.

Mostly, I build because I like building. What feels hard to others is the fun part.

THINGS I MADE

And what they made of me.

The portfolio is not the story. The lessons are.

PERSONAL OPERATING SYSTEM

A few beliefs I'm willing to debug.

(1)

Nothing is promised.

That is not depressing. It means we are free to choose what deserves our care while we are here.

(2)

Own the move, release the outcome.

Stoicism, translated into builder language: control the input, tell the truth, then let reality answer.

(3)

Aging is an engineering problem.

I do not accept decay as sacred. Biology is complicated machinery, and machinery can eventually be understood.

(4)

The physical world still matters.

Software keeps getting cheaper. Electronics, machines, and the stubborn details of reality are where my range becomes an advantage.

THINGS I KEEP RETURNING TO

hardware talking to softwaresystems that run for centsimpossible ideas made boringproducts people teach each otherthe physical world

SAASAPPSTUDIO / OPERATING HOME

The builder finally has a studio.

For years, every project lived as its own little island. saasappstudio is the decision to stop working that way.

Now I run the products there, take selected client builds, and quote the awkward hardware ↔ software jobs that do not fit inside a normal agency menu.

01 / OPERATEthe products
02 / BUILDselected systems
03 / BRIDGEhardware ↔ cloud
saasappstudio.com
NOW / IZMIR

Still inventing.
Now operating.

I am building at the seam between machines and software, treating electronics, infrastructure, distribution, and operations as parts of the same system. There will be wrong turns. There will probably be smoke. That is fine.

Halis (Kod Jokeyi) — Electronics Engineer & Inventor