zk.ZAFER KAYA
DIGITAL ENGINEERING

INDEPENDENT STUDIO / BERLIN

IDEAS
MADE REAL.

AI systems. Mobile products. Automated workflows.
Built from the interface to the infrastructure.

Explore the work
Bablio's actual vocabulary practice screen
Bablio's actual video screen, with original and translated subtitles
LANGUAGE, IN CONTEXT.

THE PRODUCT SIDE

NOT JUST
on paper.

Learning, play and commerce.
Different products. The same care in the build.

01 / AI-ASSISTED LANGUAGE LEARNING

bablio.

Learn from the
world you watch.

Interesting videos become language lessons. Follow the subtitles, save new words and practise them with the real voices and sentences you heard.

  • Personalised video discovery
  • Original & translated subtitles
  • Vocabulary, listening & speaking practice
Request a walkthrough In development / Real application screens
Bablio video learning with dual subtitles
Bablio context, listening and pronunciation practice modes
WATCH → NOTICE → PRACTISE

02 / ANDROID PUZZLE GAME

Puzzlumi.

A little world.
Piece by piece.

Colourful jigsaws, a playful companion and small moments of discovery. A mobile game designed for children to explore at their own pace.

  • Friendly characters & tactile puzzles
  • Different levels of difficulty
  • No ads. No accounts.
Ask about the project
Puzzlumi's cat companion app icon
Real Puzzlumi jigsaw gameplay with its cat companion
SMALL HANDS. BIG DISCOVERIES.

03 / MOBILE ENGLISH LEARNING

Swipelore

Short videos, everyday English and quick comprehension checks. A mobile project spanning the app, backend and AI-assisted content workflows.

Android & iOS.NET MAUIAI content

04 / E-COMMERCE PROJECT

Klarmarkt

An e-commerce project for the German market. Part of a wider product practice that connects customer experience with the software behind the business.

E-commerceGermanyWeb product

THE SYSTEM SIDE

GOOD IDEAS NEED
good engineering.

From an AI feature to a complete product.
Here's where I can help.

01

AI engineering

Knowledge assistants, document AI and retrieval systems that use your information. Model integration, agentic workflows and product features with a clear job to do.

RAG / PRIVATE KNOWLEDGE / MODEL INTEGRATION
02

Automation

Connect the tools your business already uses. Automate repetitive processes, build internal tools and keep a person in the loop where judgement matters.

WORKFLOWS / API INTEGRATIONS / OPERATIONS
03

Web & mobile

Websites, web applications and mobile products. Interface, backend and deployment built together, from a focused first version to the next release.

WEBSITES / WEB APPS / ANDROID & IOS
04

Cybersecurity & AI

AI-assisted knowledge tools and software for security workflows. Practical support for reporting, review and integration, with careful handling of access and data.

SECURITY WORKFLOWS / DOCUMENT AI / INTEGRATION

BEHIND THE WORK

Built for more
than the demo.

01

Enterprise document AI

Files become searchable knowledge, with hybrid retrieval and source-backed answers. Ingestion, models and interface in one system.

02

Connected operations

Order integrations, support routing and desktop tools. Several systems brought into a single working interface.

03

Content infrastructure

Publishing tools, knowledge portals and media pipelines. Software for the people creating and organising the content.

Zafer Kaya, AI engineer and product builder in BerlinBERLIN / GERMANY

THE ENGINEER BEHIND THE STUDIO

Zafer Kaya.

I work across AI engineering, automation and cybersecurity, and build products of my own. The work goes from the interface all the way down to the systems that make it run.

A direct line to the person doing the build. Clear decisions, hands-on development and care for what happens after the first version.

Explore my background
ENGLISH / GERMAN / TURKISH

YOUR NEXT BUILD

LET'S MAKE
IT happen.

A product, a process, a problem.
Tell me what you're working on.

[email protected]