Applied AI engineer · Kaiserslautern, Germany
I build AI products, then prove they work.
Full-stack apps, internal tools and agent systems, built end to end with AI coding agents. I measure them on fixed tests and publish the write-ups.
Hired as an AI Specialist through an application written by a product I built.
Ten things I've built.
Four products I run, the studio behind them, a course marketplace, two browser extensions and two open tools. Pick one to open it.
Useful Bot
A team of AI bots that lives on your Mac.
Each bot has one job, runs on the model you already pay for and works in the apps you connect. Open source.
- Platform
- macOS
- Built with
- Swift, TypeScript
- Status
- Launched Oct 2026
Useful Bot
A team of AI bots that lives on your Mac.
Each bot has one job, runs on the model you already pay for and works in the apps you connect. Open source.
- Platform
- macOS
- Built with
- Swift, TypeScript
- Status
- Launched Oct 2026
Useful Brain
Answers from your company's documents, with the source attached.
A company knowledge agent that cites every answer and refuses when the evidence is not there.
- Platform
- Web
- Built with
- Next.js, Cloudflare
- Result
- 118 of 120 on its fixed test
Useful Voice
Type with your voice, anywhere on your Mac.
Tap a key, speak English or German and the words appear where you type.
- Platform
- macOS, Windows
- Built with
- Swift, TypeScript
- Engine
- Nova-3 or on-device Whisper
Useful Apply
Your entire job search, in one app.
An AI agent that finds roles, checks fit, generates the full application and tracks it. Solo-built SaaS.
- Platform
- Web
- Built with
- Next.js, Cloudflare, Claude
- Status
- Live with paying customers
Useful Build
Applied AI product studio.
Custom software, agents and workshops for company teams. The home of the Useful products.
- Since
- Jul 2026
- Makes
- Apps, agents, workshops
- Products
- Bot, Brain, Voice
Safwa
Live Q&A filter for Dari and Persian streams.
Repeated questions fold into one, questions split over several messages are joined and greetings fold away, so the teacher sees what viewers actually asked.
- Platform
- Chrome
- Built with
- Gemini 3.8 Flash, OpenRouter
- Result
- 41 of 618 wrongly hidden, now 0
Kursfind
AI marketplace for funded vocational training.
A two-sided marketplace matching German job seekers with funded vocational training courses.
- Platform
- Web
- Built with
- Next.js, OpenAI
- Founded
- Sep 2025
Pulse
See your work hours in the browser.
A Chrome extension for absence.io that tracks work hours and makes sure you never forget to clock out.
- Platform
- Chrome
- For
- absence.io
- Source
- Open
Swipekit
AI carousel generator for LinkedIn and Instagram.
Turns a script into on-brand carousel slides. Bring your own brand.
- Platform
- Web
- Built with
- Next.js, TypeScript
- Source
- Open
Agent skills
Open toolkit of Claude agent skills.
Skill Scanner, Design Craft, Premium UI Pass and Prompt Optimizer, all open source.
- For
- Claude Code
- Count
- 4 skills
- Source
- Open
My writings
| Result | Write-up | Project | Date |
|---|---|---|---|
| 24 → 1 | Changing the AI model cut made-up claims in job applications | Useful Apply | |
| 7.8× lighter | How I made a live-chat helper almost 8 times lighter | Safwa | |
| 118/120 | Why I threw away the fix that scored perfectly | Useful Brain | |
| 41 → 0 | How I stopped an AI from hiding real questions | Safwa | |
| 115/115 | Replaying a live broadcast to fix a confusing bug | Safwa | |
| 4.0 → 1.9% | I tested 28 AI models, and the test picked the winner | Safwa | |
| 72 → 95% | Teaching an assistant to answer only from its sources | Useful Brain | |
| 1/9 price | The cheaper AI model did the same job for a ninth of the price | Useful Brain |
Experience
- Jul 2026 to now
Building AI products
Useful BuildKnowledge assistants, workflow automation and internal tools that take repetitive work off company teams.
- May 2026 to Sep 2026
AI Specialist
Nature HeartBuilt 10+ internal AI tools, including Aktionsplaner, an AI campaign forecasting app for Shopify, plus onboarding, payments and A/B test tools.
- Jan 2026 to May 2026
Founder
Useful Apply, Karko AI Inc.Solo founder. Concept to launched product, 380+ commits, live with revenue.
- Sep 2025 to Jan 2026
Founder
KursfindBuilt and launched an AI course marketplace at kursfind.de.
- 2023 to 2025
Founder
Wasim AcademyAZAV-certified training company, 30,000+ EUR course revenue.
- 2022 to 2025
E-commerce
Self-employedRan Amazon stores in 4 markets, 150,000+ EUR revenue.