Portfolio
Results speak for themselves.
MANTIS DETAILS
One app. All clients. Zero cloud.
IT hub for service providers: clients, credentials, tickets, time tracking, risk management and compliance – all encrypted, local or in a team.
NEATIT DETAILS
Eine App. Alle Erinnerungen. Null Cloud.
AI media library for family videos: tagging, face recognition and transcription, all local, one file.
TAPAS DETAILS
One app. Real Spanish. No excuses.
Learn Spanish with AI-powered spaced repetition, 15+ exercise types, speech recognition and DELE simulation. 21,500+ learning items, mistake DNA, data export (JSON/xAPI). No ads, no penalties, just motivation. Directly in the browser.
COOKIES DETAILS
One app. Real English. No excuses.
Learn English with AI-powered spaced repetition, 15+ exercise types, speech recognition and Cambridge simulation. Mistake DNA, data export (JSON/xAPI). No ads, no penalties. Directly in the browser.
MACARONS DETAILS
One app. Real French. No excuses.
Learn French with AI-powered spaced repetition, 15+ exercise types, speech recognition and DELF simulation. Mistake DNA, data export (JSON/xAPI). No ads, no penalties. Directly in the browser.
PRETZELS DETAILS
One app. Real German. No excuses.
Learn German with AI-powered spaced repetition, 15+ exercise types, speech recognition and Goethe/TestDaF simulation. Mistake DNA, data export (JSON/xAPI). No ads, no penalties. Directly in the browser.
LUDIO DETAILS
Set up. Understand. Start playing.
Board game rules explained visually. Step-by-step setup, audio narration, glossary and search. Directly in the browser, works offline, free.
KASSANDRA DETAILS
One app. Four lotteries. Zero hocus-pocus.
Statistics-based lottery analysis for Swiss Lotto, EuroMillions, EuroDreams and 6aus49. Trends, frequencies and tip generator with 20+ algorithms. Directly in the browser, free.
alessyo.eu DETAILS
Eine Geschichte. Alle Sinne. Null Werbung.
Interactive storytelling platform with AI chat, minigames and adventures. 12 languages, GDPR compliant, playable without registration. Parents can create and manage child accounts – a safeguard for kids engaging with media online.
RORIDULA DETAILS
One server. Full defense. Zero blind spots.
Collective Autonomous Cyber Defense Platform with 14 deception layers. Turns any server into an intelligent defense system that deceives, slows down and automatically isolates attackers.
ARGUS DETAILS
Analyses. Decides. Acts. 24/7.
Autonomous trading system for professional asset managers. Monitors markets, evaluates opportunities, trades automatically – with multi-layer risk management and full traceability.
Services
From your idea to a finished solution · everything from one source.
Software & Websites
Custom applications, modules and intelligent websites · built exactly to your requirements.
Automation
Repetitive tasks? The software handles it. Your head stays free for what matters.
APIs & Integrations
Your systems seamlessly connected · everything works together.
Databases
Clean structures, secure backups, well-planned migrations · your data in good hands.
AI Integration
Intelligent workflows, automated analysis, smart assistants · AI where it creates real value.
Consulting & Concept
Requirements analysis, feasibility, architecture · the most important work happens before the first line of code.
Mission
100 % custom. Every line of code is written for you.
Security without compromise
Every line of code follows the highest security standards · ISO-compliant down to the last detail.
Audit-ready
Every project fully documented · requirements, architecture, processes, handover. Audit-ready at any time.
Clean design
Clear interfaces, focused on what you need.
Intuitive to use
Software that explains itself · with an in-app manual you'll rarely need.
Your code, your property
Full control, full freedom · it all belongs to you.
Direct contact
One person, personal and fast.
The invisible gaps
API keys in source code, open endpoints, missing validation · what looks functional at first glance is often wide open.
Code someone understands
When the creator leaves and no one can read the code, every small change becomes a risk. At COSIC, code is written to stay maintainable.
Maintainability over throwaway code
Technical debt accumulates invisibly. Eventually, every change costs more than the original build.
Built to scale
Architecture that scales from 10 to 10,000 users · designed from the start.
Law & regulation
GDPR violations, missing accessibility, broken licenses · what gets overlooked can get really expensive.
What happens at 2 AM?
When the system goes down, it doesn't matter how fast it was built · what matters is whether someone is there who understands it and can fix it.
Who is behind COSIC?
Behind COSIC is me · since the mid-90s I've been building digital solutions that work. I think in systems.
Starting with websites in the mid-90s, programming languages followed through IT training. Since then, software development has accompanied and strengthened every step of my career. Professionally, I'm at home in Supply Chain Management.
Since 2021 I work exclusively with Linux. Since 2022 I stay continuously up to date with the latest AI technologies. I apply systems thinking to every industry. My standard: make results visible, keep functionality intuitive, never overwhelm.
If you like my work, I'd appreciate a cup of coffee. ☕ PayPal
Systems thinking for every industry
Methods & Processes
Technologies
Platforms & Self-Hosted
Standards & Security
Tell me about your idea
Drop me a message · I'll get back to you within 24 hours.