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ShippingFrom Vienna · 13 tools out, the next one on the bench

Hi, I'm Behnia.

I'm Behnia Zarei, a developer in Vienna with more than ten years in software, data and AI. I turn work people repeat by hand into software, and publish some of it here as tools, courses and guides. Questions, feedback and ideas are always welcome.

Vienna, AustriaCentral European Time
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local time

From the spec to production, every time.
The short version

Where software, data and AI meet.

For more than ten years I have worked where software, data and AI meet: pipelines that bring data together, models that forecast, agents built on language models, and the reports and interfaces people use to act on all of it. The work starts the same way every time: a job people do by hand, again and again. I take it apart, learn how it really works, and build the software that does it, to the standard I would expect from a product team: researched, designed, tested, documented and maintained.

BENIBIX is the public part of that work, and all of it is mine, end to end: the 13 tools and the design system they share, the 104 lessons and 78 guides that teach them, the static site that serves them without a single tracker, and the pipeline that turns a script into a finished video with voice, music and captions.

I care most about the parts nobody sees. Pages held to a weight budget that is checked before every release. Reports checked for contrast and colour blindness. A privacy page that lists every key a tool keeps in your browser. Release notes for every change. That is what makes software something people trust with their real work.

What I like to help with most: turning a task people repeat by hand into something that runs on its own, getting data into reports people trust, and bringing language models into real work so their answers can be checked. If you are working on something like that, have a question about a tool, or want to share feedback or an idea, write to me. I read every message.

BENIBIX is independent: it is not made, endorsed or supported by Anthropic, OpenAI, GitHub, Microsoft or any other company whose products the tools work with or refer to. Their product names are their trademarks and are used here only to say what the tools work with or refer to.

Experience

Ten years, end to end.

From the raw data to the screen people read it on, and the AI in between.

10+years of professional work

Six disciplines, one way of working: read the real thing, build it completely, test it before anyone depends on it.

  1. 01AI & LLM engineering

    Software on language models from any provider, built to give answers people can check.

    • LLM APIs
    • RAG
    • Agents
    • Evals
    • Claude Code
    • MCP
    • Prompt design
  2. 02Data engineering

    Pipelines and data platforms that run every night with nobody watching.

    • ETL / ELT
    • Data modelling
    • Orchestration
    • Data quality
    • Cloud data platforms
    • SQL
    • Python
  3. 03Machine learning

    From history to a forecast or a score the business can check.

    • Python
    • Forecasting
    • Classification
    • Feature engineering
  4. 04Analytics & BI

    KPIs defined once, and reports a manager reads at a glance.

    • KPI design
    • Power BI
    • DAX
    • SQL
    • Chart choice
    • Report design
  5. 05Software engineering

    Complete applications, tested on every build and kept up to date.

    • TypeScript
    • React
    • Next.js
    • Node.js
    • Playwright
    • ffmpeg
  6. 06Design & interfaces

    One design system, light and dark, from icons to motion.

    • Design systems
    • UI design
    • Icons
    • Motion
    • Colour & contrast
Public work

What the work adds up to.

Most of my work is not public. This part is, and every number is counted from the tool itself.

Find me

Follow the work, say hello.

New tools, lessons and guides appear here first. A question, feedback or an idea for working together? Write to me.

Contact