building production systems with modern web tech and AI.

Stack

Skills

• 🤖 AI/ML — RAG pipelines, LLM integration & orchestration, prompt engineering, AI agents
• 🔌 Backend — API design (REST/FastAPI), authentication, background jobs, workflow automation
• 🌐 Frontend — TypeScript, Next.js, full-stack web applications
• ☁️ Infra — Docker, Azure, CI/CD, Vercel, Supabase
• ⛓️ Web3 — Smart contracts (Solidity/Vyper), DeFi protocols, Solidity security

currently building something new. check back shortly.

kit — @mikespa/kit on npm. A small, dependency-free TypeScript utility library covering date/number formatting (including Swiss-specific formats like CHF and IBAN), strings, math, arrays, and objects — built to stop copy-pasting the same formatCHF / slugify / clamp helpers between Next.js projects. Tree-shakeable via subpath exports (@mikespa/kit/format, /string, /math, etc.), fully tested, with CI.

rate-limit — A lightweight, cost-aware rate-limiting engine for FastAPI. Instead of flat per-route limits, routes declare a cost class (e.g. cheap, llm) so expensive endpoints like LLM calls get throttled based on actual load, not just request count. Supports user/tenant/IP scopes, in-memory or Redis backends, and pluggable observability hooks. Built from a lesson learned running production LLM systems: cost is a first-class reliability concern, and a per-request attack vector that plain uptime-based rate limiting misses.

defi-project — DApp on Ethereum where users can deposit various ERC-20 tokens and earn a yield. The farming contract interacts with Aave and Compound to generate yield on deposited tokens. Smart contracts written in Solidity, deployment and testing done with the Brownie framework.

nft-marketplace-vyper — Marketplace for NFTs where users can buy and sell any ERC-721 tokens. The more a user trades, the more MarketCoin tokens they earn — redeemable to mint MarketNFTs, a custom NFT for the platform. All contracts have a full test suite and are written in Vyper.

Solutions and write-ups for DamnVulnerableDeFi and OpenZeppelin's Ethernaut — two of the most well-known Solidity security CTFs. Covers the most common smart contract vulnerabilities, how to exploit them, and how to protect against them.

ethereum-exploit — A detailed analysis of some major exploits that have taken place on Ethereum.