Custom software and web apps
Internal systems and web apps built end to end, like the 16-module ERP that runs a manufacturer's sales, production and shipping.
What you can hire for
Services with shipped work behind them
Each line of work below links to a project you can open: a case study, an App Store listing or a live site.
AI and machine learning
Models that read real paperwork: an answer-sheet reader and an offline question detector with 97.1% recall on a book it never saw in training.
Mobile apps
MUST, 1in46, Mawla and Zoomi Kids are live on the App Store under the founder's own developer account.
Google Ads automation
An engine on the Google Ads API that has generated 1,000+ ad groups and 2,000+ ads for a medical practice.
Financial data products
Sağlama recomputes ratios for Borsa İstanbul companies from their own statements and shows the source of every number.
IT consulting
Architecture reviews, stack choices and second opinions on vendor proposals, turned into a build plan.
How a project runs
Remote by design, with something to try every week
Istanbul is 7 to 11 hours ahead of North American time zones, so calls go in your morning and the build moves forward while you sleep.
-
Scoping call
You explain the problem and the systems it touches. You hear whether it is a fit and how it would be approached.
-
Written scope and quote
A fixed scope for the first version, with a price and a timeline you can hold the work to.
-
Weekly demo builds
A working build to click through each week, so feedback arrives while changes are still cheap.
-
Launch and handover
Code, database and hosting in your own accounts, with documentation. Support can continue after launch.
Tools
The stack in the shipped projects
No list of every framework on the market: these are the tools used in the projects on this site.
- Next.js
- React
- TypeScript
- Tailwind CSS
- Python
- FastAPI
- PostgreSQL
- Supabase
- Vercel
- Render
- Swift and SwiftUI
- React Native and Expo
- PyTorch
- YOLO
- RT-DETRv2
- vLLM
- Tesseract OCR
- Google Ads API
Questions
Frequently asked questions
Do you work with companies anywhere in the US and Canada?
Yes. All work is remote, so where your company is based does not change how a project runs. Calls are booked in your morning, when the working day overlaps with Istanbul, where the founder works.
Who builds the software?
Savas Tutumlu, the founder of Stratagem Systems. He has shipped 30 projects since 2023, including four iOS apps on the App Store and a 16-module manufacturing ERP.
How long does a custom software project take?
It depends on the scope. A focused first version can take weeks; the SPSTARPLAST ERP was built and maintained from May 2025 to August 2026 and grew to 16 modules. You get a timeline together with the written scope.
What happens after launch?
Support can continue after launch, or the code, documentation and accounts can be handed over to your own team, as happened with the SPSTARPLAST ERP in September 2026.
What does a project cost?
Every project gets a fixed quote after a scoping call. For typical ranges by project type, see the software development pricing guide.
You talk to the person who writes the code. Read Savas Tutumlu's profile, or start from the Houston page.
Describe what you want built
A short call is enough to know whether it is a fit. If it is, you get a written scope and a fixed quote for the first version.
Or email info@stratagem-systems.com