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sweatbuckets/README.md

I build products that solve real problems, make business sense, and scale reliably.

Focused on practical execution, sustainable business models, and strong engineering fundamentals.


Philosophy

  • Build products people would actually use
  • Prefer ideas with real demand, clear value, and sustainable business models
  • Care about execution quality, not just concepts
  • Solve practical problems with simple and scalable solutions

About Me

Backend-focused engineer who enjoys designing reliable systems end-to-end.

Strong interest in simplifying complex systems through scalable architectures, intuitive data models, and practical engineering decisions.

I enjoy working across business, infrastructure, and engineering layers to turn ideas into real products.


Core Stack

Java Spring Boot NestJS TypeScript

PostgreSQL Redis Kafka AWS Docker

Solidity Foundry


Selected Work

๐Ÿ” 30ficate โ€” Certificate Verification Platform

Building a platform that helps users verify web certificate trust more intuitively.

Highlights

  • Researched Certificate Transparency logs and browser certificate validation flow
  • Designed certificate fingerprint verification architecture
  • Explored blockchain-based trust anchoring for certificate proofs
  • Planned browser extension flow for real-time certificate checking
  • Focused on making complex certificate infrastructure easier to understand and use

๐Ÿ—ณ๏ธ VESTAr โ€” Web3 Voting Infrastructure

Built a voting platform focused on solving trust, transparency, and scalability problems in online voting.

Highlights

  • Designed smart contract-based election lifecycle
  • Built private ballot flow and tally architecture
  • Implemented ECDH-based key reveal flow for private ballots
  • Developed NestJS + Prisma + PostgreSQL backend systems
  • Built blockchain event indexer for state synchronization
  • Deployed workloads on AWS EC2 with Docker and CI/CD

๐ŸŽ“ CC โ€” Campus Performance Platform

Built backend systems for a university platform that improves discovery and reservations for campus performances.

Highlights

  • Designed AWS S3 image upload and media storage pipeline
  • Implemented booking notifications and user activity features
  • Explored Kafka-based asynchronous processing for scalable notifications
  • Studied fanout strategies and event-driven delivery architecture
  • Focused on practical features that improve real student user flows

Building Approach

  • Validate ideas quickly before overbuilding
  • Focus on real user problems and practical value
  • Prefer simple architecture first, then scale thoughtfully
  • Build products with both engineering quality and business context in mind

Interests

  • Scalable backend & distributed systems
  • Practical product building
  • Blockchain infrastructure
  • Security engineering
  • Performance optimization
  • Graphics fundamentals & intuitive visualization
  • Turning ideas into real products

GitHub Stats


Solve real problems. Build useful products. Scale thoughtfully.

Pinned Loading

  1. SeeATheater/CC_Backend SeeATheater/CC_Backend Public

    Java 1

  2. VESTAr-BAY/vestar-backend VESTAr-BAY/vestar-backend Public

    TypeScript

  3. 30fi30ficate 30fi30ficate Public

    ์ ‘์†ํ•˜๋ ค๋Š” ์‚ฌ์ดํŠธ TLS ์ธ์ฆ์„œ์˜ ๋„๋ฉ”์ธ ๊ด€๋ฆฌ์ž ์Šน์ธ ์—ฌ๋ถ€๋ฅผ ๊ฒ€์ฆํ•˜๋Š” ๋ธŒ๋ผ์šฐ์ € ํ™•์žฅ ์›น PKI ๋ณด์•ˆ ๋ณด์กฐ ์‹œ์Šคํ…œ

    TypeScript

  4. UpbitExpML UpbitExpML Public

    Python