Daehun Lee

Founder of Lindy Operation | ex- FE & PM

3.5 years of experience in frontend development and product management at mobility and creator economy startups.

Founded Lindy Operation, building an AI-powered wealth management platform.

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Projects

T1 Home Ground 2026 — Landing page2026
T1 Home Ground 2025 — Landing page & VIP invitation | 70K+ cumulative users2025
Gelato Pique — Inventory dashboard enhancement | LE SSERAFIM collab event page2025

Open Source

vercel/turbo — Contributed to Turborepo build system
gpt-tuning-node — GPT fine-tuning Node.js library
claude-usage-monitor — Real-time Claude usage tracker for macOS menu bar
squisher — Rust TUI-based file compression library (PDF, PNG, JPG)
flash-pump-engine — Auto-launches memecoins on pump.fun from x.com trends

Work Experience

3 yrs 6 mos

THE SWING

Mobility platform startup · 2024.08 - 2025.02

Product Manager

2024.12 — 2025.02

SWING Transit Card
2025.01 — 2025.02

Industry-first unlimited transit fare cashback model

  • Designed unlimited cashback business model and product strategy
  • Defined core features through user research
SWING BIKE
2024.12 — 2025.02

Motorcycle lease business ERP

  • Built B2C website offering 17 motorcycle lease models
  • Revamped B2B admin for order, settlement, and inventory management
  • Resolved inventory-settlement data mismatch through data normalization
  • Validated data integrity for KRW 20B revenue business; reduced sales support workload
  • Pitched service to investors for rental business funding

Frontend Developer

2024.08 — 2025.01

SWAP
2024.08 — 2024.12

Subscription-based mobility service

  • Built service frontend with Next.js + Tailwind CSS
  • Drove new user acquisition through promotion landing pages
  • Achieved top search rankings for e-bike subscription keywords via SEO
  • Integrated Clarity for user behavior analytics to inform targeted promotions
  • Monthly revenue +150% | Subscribers +225%
  • Maintained admin dashboard for order, inventory, and delivery management
  • Built payment history and delinquency management system

EJN (TWIP)

Creator economy startup · 2021.09 - 2024.06

Frontend Developer

2021.09 — 2024.06

TWIP 2.0
2023.01 — 2024.06

Donation platform renewal

  • NPS: Creators 94%, Viewers 92%
  • Improved paid conversion rate from 50% to 75%
  • Reduced bundle size by 11%
  • Architected SSR application with Next.js + TypeScript
  • Served English donation pages for 14% international users via i18n
  • Cut deployment time by 60% through CI/CD pipeline optimization
Gacha Donation
2023.09 — 2023.11

Interactive gacha-style donation feature

  • 13,000 gacha donations across 300 creators
  • Achieved highest ARPPU among donation features; validated product hypothesis
VOD & CLIP
2022.01 — 2022.06

VOD and clip service

  • Reached 50,000 initial MAU
  • Paid subscriptions MoM +257%
  • Averaged 10,000-20,000 monthly clips
Design System
2021.12 — 2024.05

Internal design system

  • Built Storybook-based component library
Events
2022.12

Event landing pages

  • Developed promotion and event landing pages
  • Optimized conversion rates through A/B testing

Activities

  • 2023.10 FEConf TWIP Booth Operation
  • 2023 Mock Interview & Mentoring for GSM Students
  • 2020.12 JA Korea Entrepreneurs Playground (ONDO) — Excellence Award

Education

  • 2019.03 — 2022.01 Gwangju Software Meister High School