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hyeongjun-dev/README.md

Hello πŸ‘‹, I'm Hyeongjun Yu!

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Hi, I'm Hyeongjun Yu πŸ‘‹

Staff Backend Engineer building scalable, data-intensive platforms. 10+ years turning complex customer problems into reliable distributed systems.

πŸ”₯ Featured Projects

Problem: Validators faced potential slashing penalties because their existing monitoring tools had 2+ minute data latency, leaving them blind to critical events.

Solution: I built a custom monitoring stack reducing P99 latency from 2 min to 5 sec, protecting validators from financial loss.

Tech: Go, Prometheus, Grafana, Docker

Problem: Data teams needed AI-powered analytics without complex custom integrations.

Solution: I built an MCP server that acts as a productized gateway, empowering data teams to query Metabase directly via Claude/AI assistants.

Tech: Node.js, REST API, MCP Protocol

πŸ’Ό Career Highlights

DeSpread β€” Founding Engineer / CTO (2022-Present)

  • As a Founding Engineer, I partnered with 25+ enterprise clients to architect and deploy a CaaS platform on Kubernetes
  • My automation work with Terraform and GitHub Actions cut operational overhead by 50%

LINE Corp β€” Backend Core Engineer, Media Platform (6 years)

  • I engineered and scaled the core distributed storage for LINE's Media Platform, serving 200M+ MAU with 99.99% uptime
  • Filed a blockchain advertising patent demonstrating technical innovation

πŸ›  Core Technologies

Expert: Go, Java/Kotlin, Kubernetes, AWS, Distributed Systems, System Design

Proficient: Python, Kafka, PostgreSQL, Prometheus/Grafana, CI/CD

Familiar: TypeScript, Terraform, gRPC

πŸ“ Technical Writing

πŸ“¬ Connect

πŸ“§ hyeongjun.dev@gmail.com | LinkedIn | Medium

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  1. berachain-validator-monitoring berachain-validator-monitoring Public

    Full integrated dashboard for Bera blockchain

    23 10

  2. metabase-mcp-server metabase-mcp-server Public

    A Model Context Protocol server that integrates AI assistants with Metabase analytics platform

    JavaScript 24 7

  3. claude-pulse claude-pulse Public

    Real-time session dashboard for Claude Code β€” cost tracking, analytics, and smart alerts

    TypeScript