Beynelmilel
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Software Developer & Founder · Beynelmilel

Istanbul, Türkiye

Systems, websites and advertising for your business — built with the care we give our own products.

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What Beynelmilel does

Beynelmilel is a software studio and agency founded in Bursa and working from Istanbul, Türkiye.

Everything we sell, we first built for ourselves: we learned multi-tenant architecture building a management system for Pilates studios, moderation and data safety building a social network for Erasmus students, and cost-performance trade-offs building AI products — all in our own products.

We arrive at client work carrying that experience.

Full responsibility for every project.

What we say yes to, we own end-to-end — from design to launch.

Security is not an add-on.

Row-level access control and separated privilege tables exist from day zero of every project.

All the way to production.

We deliver products that run in production — not design files.

What we do

Any kind of system or professional website; we run the advertising too.

Systems & SaaS

Custom management systems for your business: members, appointments, payments, staff — in one panel.

WhatsApp booking bot: menu, 24-hour and 2-hour reminders, cancellations, admin panel.

Professional websites

Showcase site: 4-6 pages, mobile-first, baseline SEO, privacy and cookie texts.

Showcase+: English/German, product catalogue, quote form, Google Business listing.

Advertising

  • Social media management
  • Meta and Google Ads
  • Ad creative (visuals and video)
  • Google Business and local SEO

Maintenance & audit

Maintenance: updates, backups, monitoring.

Technical audit: security and data-protection (KVKK/GDPR) technical report.

FlowDesk

FlowDesk logo

FlowDesk

From clinic to factory: business management under one roof.

FlowDesk screenshot

A multi-tenant management umbrella that unifies the shared needs of appointment-based businesses — clinics, studios, car washes, workshops. The generalised form of patterns proven in Studia.

Instead of separate software per industry, the shared backbone is written once and correctly: members, calendar, payments, staff. Industry differences plug in as modules.

  • 98 database tests + 49 unit tests green
  • KVKK/GDPR toolkit: data export, right to erasure, consent flow
  • Clinic
  • Studio
  • Factory
  • Car wash

Sanayi AI

Sanayi AI

The Turkish manufacturer's AI desk.

Sanayi AI screenshot

An AI platform that answers manufacturing, supply and sales questions in the language of industry. Designed for manufacturers with a credit-based usage model, an admin panel and a corporate dark interface.

General-purpose chatbots give the manufacturer general-purpose answers. Sanayi AI was built as a desk mate that understands the question in the factory's own language.

Work we delivered

Our own products

Taken live under our own name.

In the workshop

Not yet public — growing on our desk.

In development

djmix

Desktop DJ setup with an Auto-Mix engine: type the track names, get a DJ-grade mix. Live Auto DJ, FX, loops, MIDI.

In development

Oto Yıkama randevu

A no-show customer is a lost day. Takes bookings over WhatsApp and sends automatic reminders, built for small car washes.

In development

snackboxd

Letterboxd for snacks: a 53,000-product catalogue with ratings and reviews.

In development

Beynelmilel Platform

A data-fusion platform with link analysis, geo-temporal queries and attribute-based access control. Our most ambitious R&D project.

In development

JARVIS

Tasks, projects, markets and a real Claude terminal — in one desktop app. A personal command centre.

In development

FablePlanGen

A desktop tool that turns a project idea into a structured, actionable deep plan.

In development

janestreet-sim

A quant training simulator that tests market making, ETF arbitrage and statistical arbitrage with virtual money.

In development

CLI ajanlar

Three command-line agents: lead research, weekly competitor reports, SEO content drafts.

About me

Beynelmilel badge

Yağız Ertuğrul Kaya. I live in Istanbul; Beynelmilel was founded in Bursa, and my team and I run it from Istanbul.

Everything we sell, we first built for ourselves; we take a project end-to-end, from design to infrastructure, from launch to security.

For a new project, WhatsApp is the fastest way to reach me.

Let's talk

An idea, an order or just a question — write, and we'll reply the same day.

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Location: Istanbul, TürkiyeWeb: beynelmilel.org

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