Sehit Degirmenci
I design and ship production software: a marketplace, an AI calling platform, and agents that handle real work.
One order, from checkout to brand payout.
Systems
13 systems, ranked by engineering complexity. Most complex first.
Modestly
Pre-launchA curated EU marketplace where one checkout pays many independent brands.
- Splits every brand payout: 70% when the money lands, 30% held until the return window closes.
- Keeps products and stock in sync with each brand's own web shop.
- Shop, brand portal, admin and a phone app on one backend.
Nordic Engine
In useA CRM and calling platform that runs several companies from one system.
- Each company's data is walled off in the database itself, not only in the app.
- Records every call on two channels, transcribes it and gives the seller AI feedback.
- A progressive dialer rings the next lead by itself, 0 to 10 seconds after the last call is logged.
Construction operations system
Client system, anonymisedOperations software that carries a construction project from first lead to warranty.
- Carries every project through 12 phases, from first lead to warranty.
- Offers, PDFs and e-signing in one flow.
- Every phase change reaches the sales CRM, and a late update never overwrites a newer stage.
Jello
Launching soonA shopping assistant you text on iMessage or WhatsApp.
- Send what you want, a photo or a link; it replies with up to three picks.
- Opens each product page and drops any pick that is gone or has no price.
- Won 1st place at the Hackathon of Hackathon Winners, September 2026.
ChatBot Skriv
A Chrome extension, listed in the Chrome Web Store, that types AI-written Danish text into Google Docs the way a person would.
- Types keystroke by keystroke at a human pace, corrections included.
- Answers every question in a form, or only the selected text.
- Paid by monthly card subscription or a MobilePay pass.
Dojo
In useA learning platform that grades written answers and checks practical tasks on a real server.
- A language model grades each written answer; asking for a hint halves the points.
- Practical tasks are verified by checks run on a live server.
- One app: home screen on the phone, explanation beside the exercise on desktop.
Peter
A voice secretary: say a request out loud, and it lands in your calendar, reminders or mail drafts.
- Acts only on recordings where you say its name, and ignores the rest.
- Writes events straight into the calendar and sends reminders to the phone.
- Queues calendar changes and refuses runaway bulk edits.
ScooterVoice
PrototypeHands-free coding by voice: talk to a coding session on a Mac through your earphones.
- A glanceable riding mode next to the full chat console.
- Connects to the Mac over a private network.
- Runs in the iOS simulator; not yet tested on a phone.
Smaller systems
Investor calculator
Client system, anonymisedA return calculator that sellers use in investor meetings.
Walkthrough, coming soonYearly return and IRR from house, rent and financing. · A shared link carries the whole case, so no server stores it. · A check fails if the figures drift from the published investor case.
Website offer pipeline
Finds small businesses with weak websites and shows each one a better version.
Replay, coming soonScores thousands of existing websites and picks the weakest. · Builds a personal preview site for each business. · Every preview visit lands in the CRM as a lead to call.
Contract signing
Contract signing for any company, in its own colours, logo and language.
Live, coming soonEach contract decides who signs and whether signatures are typed or drawn. · Rejects a typed signature when only drawn ones are allowed. · The signed PDF's footer carries the signing time and a SHA-256 hash of the terms.
Inventory and rentals
PrototypeStock, rental equipment and job costs for a trade business.
Live, coming soonShows where every item is: a van, the storage room or the office. · Tracks rented equipment, which job has it and what it costs per day. · Stock can never go below zero, even with two phones at once.
Restaurant takings
Client system, anonymisedA phone app for logging a restaurant's daily takings.
Live, coming soonOne entry per payment method: cash, two card terminals and the web shop. · Month dashboard with day, month and year history. · Installs to the home screen; one user, password protected.
About

I'm Sehit Degirmenci, a software engineer based in Denmark. I design systems, specify them in detail, direct AI agents to build them and review every change against the running product.
The systems above include a marketplace, an AI calling platform and operations software for a construction company. I care most about the parts users never see: money split correctly, and data one company can never read from another.
If you're hiring, write or call me.
Contact
Based in Denmark
- sehit@degirmenci.dk
- Phone
- +45 31 83 18 87
- linkedin.com/in/sehit-degirmenci
- GitHub
- github.com/websboy10