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0hJonny/README.md

Hi there! 👋

Backend & Full Stack Engineer | C# & Go | Based in Tokyo, Japan 🇯🇵

I am a software engineer with over 2 years of commercial experience building robust backend systems using C# (.NET). Recently, I have been diving deep into Go (Golang), microservices architectures, and API design.

Currently based in Tokyo, I am passionate about writing clean, maintainable code and solving complex architectural challenges.

🚀 What I'm up to

  • 🔭 Main Project: ai-news-platform — a self-hosted news + RAG chat platform. Started as my 2024 BSc project (Go monolith on GORM), extended during my MSc with an LLM agent over the article corpus, and now being integrated with new gRPC microservices behind an API gateway.
  • ⚡ Side project: epd-lilygo-badge — e-paper business card firmware for the LilyGO T5 4.7" S3. Cut standby current from ~10 mA to ~1.2 mA by tracking down a touch controller that silently ignored its sleep command.
  • 🌱 Learning Focus: distributed systems, concurrency in Go, and modern DevOps practices (Docker).
  • 💼 Status: Actively open to Full-time Backend / Full Stack roles in Tokyo.

💻 Tech Stack & Tools

C# .NET Go PostgreSQL Docker gRPC Linux

📫 Let's Connect

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  1. epd-lilygo-badge epd-lilygo-badge Public

    E-paper business card for LilyGO T5 4.7" S3. Touch-selectable social links with QR codes, four screen orientations, auto sleep with wake-on-touch. ESP-IDF 4.4 + LVGL 9.5.

    C++ 5

  2. tinygo-lilygo-badge tinygo-lilygo-badge Public

    Pure-Go TinyGo drivers for the LILYGO T5 4.7" E-Paper S3 board: the ED047TC1 e-paper panel and the GT911 capacitive touch controller. They run without ESP-IDF or FreeRTOS. The goal is a base for an…

    Go

  3. Ozon_Sandbox_Jan_2025 Ozon_Sandbox_Jan_2025 Public

    Go