01 2026–
Hackyn.
Cofounder
A 300-person hackathon in Zürich. Bringing together students, engineers and builders from across Switzerland for a weekend of intense, high-signal work.
Visit →
Siro Tonini.
— Profile
I build at the intersection of engineering and operations — turning hard technical work into things people can actually use.
Currently cofounding Hackyn, Zürich's 300-person hackathon, and building Campone — the future-proof, AI-native booking platform that's setting a new standard for the camping industry.
— Portrait
— Currently building
Two bets,
placed in 2026.
— Selected experience
Engineering
underwrites the rest.
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2024 – 2025
IT & Security Developer
Swiss Confederation (Bund)
Operated within a classified facility. Co-developed an internal web application (PHP, JavaScript, Python) and maintained the underlying cybersecurity infrastructure. Reference available.
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2023 – 2024
Freelance Penetration Tester
Various clients
Conducted security audits and penetration tests for corporate networks. Drafted detailed technical reports with actionable remediation strategies for management teams.
— Practice
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AI & local LLMs
Deployed and managed local LLMs on personal hardware for private workflow automation. Trained a custom model for image and drawing recognition.
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Self-hosted infrastructure
Architected and maintain a private server stack (Nextcloud, Jellyfin, secure VPNs) with strict data privacy, automated backups, and remote access.
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Offensive security
500+ hours of OSCP training in network security and vulnerability assessment.
— Education
-
2025 –
BSc Computer Science
ETH Zürich
Focus: systems, software engineering, data structures.
-
2020 – 2024
Matura · Mathematics & Physics
MNG Rämibühl, Zürich
— Languages
- German Native
- English C2 — IELTS, 6 months in Australia
- French B2
— Off the clock
Tennis · Running · Surfing · Skiing · Wakeboarding.
— Get in touch