Product-minded builder focused on clear workflows, local-first tools, and practical automation.
I like turning repetitive, messy tasks into products that feel calm, obvious, and dependable.
Most of my public work sits at the intersection of product design, automation, and developer tooling: tools that solve a narrow problem well, with a strong emphasis on clarity, local control, and day-to-day usability.
Note
Current focus: product-style tools with simple interfaces, clean operational behavior, and minimal unnecessary infrastructure.
Local-first desktop app for reviewing Instagram non-followers, fans, mutuals, and saved scan history.
Built with Tauri, Rust, Python, and Playwright, it is designed around a private local workflow:
- connect a real Instagram session locally
- run live scans without relying on a hosted backend
- review non-followers, fans, mutuals, diagnostics, and history in one workspace
- keep session data and reports on the user machine
Links:
- Repository: theycallmedern/instagram-followback-checker
- Latest release: Download desktop builds
Telegram bot for ZJU language-program schedules, reminders, and quick timetable checks.
Built on Cloudflare Workers and D1, it focuses on fast daily use inside Telegram:
Today,Tomorrow,Full week, andNext class- lesson reminders and daily digests
- group switching and favorites
- lesson notes and inline settings
- multilingual interface:
RU / EN / ZH
Links:
- Repository: theycallmedern/ZJU-Schedule-Bot
- Bot: t.me/ZJUScheduleBot
- product-first thinking over feature sprawl
- preference for local-first or low-infrastructure architectures where they make sense
- strong bias toward simple UX, clear copy, and operational reliability
- interest in tools that are useful every day, not just technically interesting
Python · JavaScript · Rust · Tauri · Playwright · Cloudflare Workers · Cloudflare D1 · Telegram Bot API