Work
Things I build outside the day job. The employment side — five years of enterprise Java, telecom billing and mediation — lives in the cv; this page is the rest: products, infrastructure, and the occasional vulnerability report.
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Online Auction Platform
A C2C auction platform, built and shipped as an independent product under my registered sole proprietorship — full-stack architecture, backend, and the infrastructure it runs on. Product ownership from concept to launch, alongside employment.
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Solana On-Chain Analytics
An own indexer and a bit over a year of aggregated launch and trade data — analytics and backtests first, trades later. The conclusions end up as notes on this site. the notes →
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Java Workflow / Mediation Engine
A custom engine for configurable data-processing workflows, inspired by DigitalRoute Mediation Zone: collection, transformation and routing of high-volume records, applied as a self-designed system rather than a vendor product.
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Self-Hosted Infrastructure
The server stack behind my products: containerized deployment with full observability and monitoring. End-to-end ownership — provisioning, deployment automation, reliability. This site is served from it too.
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Security / Bug Bounty
Participant in the City of Vienna's bug bounty program — four of five submitted vulnerability reports accepted. Also active on Immunefi and Bugcrowd.