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Achievements

Achievement: QuickdrawAchievement: StarstruckAchievement: Arctic Code Vault ContributorAchievement: Pull Shark

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hainet50b/README.md

💳️ Haine (hainet50b)

I've been working at a Payment Service Provider (PSP) in Japan 🇯🇵 as a software engineer for over 10 years. Beyond hands-on engineering, I founded and led an engineering team dedicated to mentoring and growing junior engineers, serving as Engineering Manager for two years.

I'm now a solo researcher dedicated full-time to AI-driven development at the same PSP — pursuing two frontiers:

  • Replacing what once took a full team with AI-assisted workflows to halve the cost of building payment systems.
  • Exploring LLM-native payment architectures where the model itself makes the judgment call.

I write about observability, resiliency, AI-driven development, and related topics:

🌿 Tech stack

  • Elasticsearch
  • Spring Boot, Java
  • Claude
  • Rust

📫 Contact

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  1. homeos homeos Public

    Manage install scripts in one place, reproducible on any machine.

    Rust

  2. http-client http-client Public

    A Zed extension for .http files, inspired by the HTTP Client in IntelliJ IDEA.

    Rust

  3. arazzo2mermaid arazzo2mermaid Public

    A lightweight Rust CLI tool that converts Arazzo workflows into Mermaid diagrams for documentation and visualization.

    Rust

  4. ralph-loop-example ralph-loop-example Public

    A hands-on example of the Ralph Loop, an autonomous AI coding workflow.

    Shell

  5. spring-ai-mcp-example spring-ai-mcp-example Public

    A project for learning MCP with Spring AI. The LLM autonomously invokes tools on MCP servers.

    Java