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The Eco² globe character, refined for this portfolio from the latest official main character: a sky-blue globe with green land, a sprout on top and a brown smiling face
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Eco²

Backend · Cloud infrastructure

Recycling guidance from one photo and a conversation.

An all-in-one AI assistant that understands how recycling works in Korea.

2025.10.31 — 2026.02.10

Team project · infrastructure and deployment foundation → domain backend → async processing, conversational agent, verification

2025 새싹 해커톤 (Saessak Hackathon)Excellence Award · 2025.12.02

  • Web appService closed

Recycling guidance from one photo and a conversation.

Service screens published by the official Eco² project
Product introduction image published in the official README
  1. October 31, 2025 to November 2025Cluster and deployment foundation → domain backendBegan the cluster and deployment foundation with Terraform, Ansible and CI; in November, widened to auth, character, classification and location APIs and frontend integration.
  2. December 1, 2025 to December 2, 2025Service integration and finalsIntegrated the team's web service and worked on finals development; the team received the Excellence Award on December 2, 2025.
  3. December 2025Async execution and observabilityConnected auth offloading, RabbitMQ workers, EFK logging and distributed tracing, and migrated to Redis Streams on December 26, 2025.
  4. January 2026 to February 10, 2026Conversational agent, recovery, verificationWorked on LangGraph tool calls and conversation state recovery, SSE delivery, the Scan load test and a conversation evaluation pipeline.