• 📝 I (don't) regularly write articles on https://bulldogjob.pl/readme/authors/krzysztof-zawisla
• 📫 How to reach me [email protected]/via LinkedIn

My Leetcode: https://leetcode.com/KrzysztofZawisla/
My MakerWorld: https://makerworld.com/en/@KrzysztofZaw

• Programming languages: TypeScript, JavaScript, Rust, Go¹, Python, Mojo², AssemblyScript³, PHP⁴, Zig⁵, Q#³
• CADs: Fusion 360
• Databases:
  • Relational databases: PostgreSQL (with zombodb & pg_tgrm), MySQL, SQLite, MariaDB
  • Non-Relational databases: Redis, FaunaDB, MongoDB, NeDB, Gun, Chroma, Pinecone
• Query languages: SQL, GraphQL
• Runtimes and implementations: Bun, NodeJS, Deno, PyPy, TinyGo
• Descriptive languages: HTML5, SCSS, Less, CSS3, Markdown, MDX
• Version control systems, containerization, and related things: Docker, Podman, Git, GitHub, GitLab, GitHub Actions, GraalVM, NGINX
• AI Providers: Anthropic, Google, OpenAI, DeepSeek, Z.AI, Alibaba (Qwen)
• AI Tooling: Claude Code, Ollama, ComfyUI, HuggingFace
• Cloud computing:
  • AWS: S3, Lambda, SAM, IAM, Aurora, DocumentDB, ElastiCache, LoadBalancer, API Gateway, ECR, ECS, Cloudfront, Route 53, SQS, EFS, SES, WAF & Shield, Cloudwatch
• Message brokers: NATS
• JavaScript/TypeScript frameworks/libraries etc.:
  • SPA/MPA frameworks/libraries: React, Preact, SolidJS, Astro, NextJS, JSX
  • Testing tools/frameworks/libraries: Jest, Vitest, Puppeteer, Spectron, tsd
  • Multi-Platform development frameworks/libraries: Electron, React Native, Capacitor & Ionic
  • CSS-in-JS: Styled-components, Emotion
  • Stuff related to HTTP servers, web sockets, and backend stuff in general: Express, Socket.io, tRPC, serverless-express, middy
  • ORMS, and ODMS: Schemix, Prisma, Mongoose
  • Functional programming frameworks/libraries: Lodash
  • Reactive programming frameworks/libraries: RxJS
  • Bundlers, compilers, and common stuff: Webpack, RSPack, Rollup, Vite, Babel, SWC, ESBuild, TTypeScript
  • State management frameworks/libraries: Formik, Zustand, Hookstate, Redux, react-hook-forms
  • Code quality tools, formatters, documentation, git hooks, and so on.: ESLint, Husky, Prettier, JSDoc, TSDoc, Storybook
  • Web3: Solana Web3, IPFS
  • DevOps stuff: Pulumi, Watchtower • Schemas, validators, and runtime type checkers: yup, zod • Child processes: ZX
  • Working with dates: DateFNS
  • FFI: FFI-napi, pythonia
  • AI: langchain, openai
  • Message brokers: NATS.js
  • 3D stuff: ThreeJS
  • Big numbers: bn.js
  • Charts: ChartJS
  • WebAssembly, PyScript
  • Internalization: i18next
  • Animations: Framer-Motion, AnimeJS
• Python frameworks/libraries etc.: FastAPI, Poetry, UV⁶ & UVX⁶, Hypercorn, Selenium, Numba, BLIP, LAVIS, LocalStack, Langchain, Langfuse, Langgraph, MCP, HTTPX, NatsPY, Folium, Cohere re-raking
• Golang frameworks/libraries etc.: Gin-gonic, WebAssembly
• Rust frameworks/libraries etc.: PyO3, Neon-bindings, Rocket.rs, Axum, Tower, Serde, esp-idf, embassy, anyhow, heapless, Leptos, Yew, Diesel, Tokio, wasm-pack, WebAssembly
• and many others.

¹ - I prefer to use Rust or TypeScript over Go, and I no longer use it on a daily basis.
² - I work with Mojo in rare cases where GPU acceleration and execution time are crucial and not using Python is not an option.
³ - Worked with these due to curiosity. Not very useful in my work, and projects. For the WebAssembly usage I prefer Rust with Leptos framework. In terms of quantum computing I don't need it, in my current projects, and work.
⁴ - Legacy from the school times. I prefer to not come back to this.
⁵ - The perfect language for microcontrollers, which have so little memory that even 0 abstraction logic from Rust won't fit. Since this isn't a common occurrence, I practically never use Zig, preferring Rust instead. I use Zig when I need "modern C," which is almost never.
⁶ - I'm working with UV for dependency management when it comes to releasing the MCP stdio server.