Expert Sapiens
Expert marketplace built for the age of AI agents hiring humans.
161 visitors·33K impressions·28d
MarketplaceFounder2026
Wonsuk Choi — Full-Stack Engineer & Founder
Full-stack engineer & founder building apps for healthcare, immigration, legal, and real estate — designed to rank organically, not depend on paid ads.
Available for consulting
Work with me →Usually responds within 24h
Projects 12
Apostille First
Apostille and document legalization service for Korea-issued documents. Faster, simpler, fully guided.
12 visitors·1.8K impressions·28d
LegalFounder2026
Mr. Visa Korea
Visa help in Korea powered by AI trained on the most up-to-date South Korean visa information. Knowledge base kept current for users and experts to efficiently navigate scattered immigration data.
63 visitors·3.8K impressions·28d
ImmigrationFounder2026
Airlinkee
Professional link page platform for experts. Share services, booking links, socials, and credentials from a single, beautiful page with AI-powered assistance and analytics to convert visitors into clients.
39 visitors·6.7K impressions·28d
SaaSFounder2026
Seoul Homes
Real estate platform for foreigners in South Korea. One of the most visited property sites for expats - rentals, sales, and short-term stays across Seoul and beyond.
14K visitors·235K impressions·28d
Real EstateFounder2026
Seoul Translate
Professional translation services in Seoul for apostille-ready documents, immigration paperwork, and business contracts.
15 visitors·627 impressions·28d
TranslationFounder2026
Seoul Apostille
Map-based directory for administrative agents in South Korea. Register to find and connect with verified apostille and document agents near you.
LegalFounder2026
Rehovica
Digital business cards that make a lasting impression. Share your contact info, portfolio, and booking link in one professional page.
SaaSFounder2026
Kithling
AI relationship memory. Talk about your contacts and Kithling remembers everything — names, details, life events — and reminds you when it's time to reach out.
SaaSFounder2026
HanTaxPro
Connects you with verified Korean and US tax accountants, CPAs, and financial advisors for cross-border tax, accounting, and financial questions.
MarketplaceFounder2026
Studio Expertise
Design and development studio building client sites and products.
AgencyFounder2026
CIBA
Nonprofit association for Korea's beauty and creative arts industry, discovering artists and running annual beauty fairs.
NonprofitClient2026
Donghasanghoe
Warehouse-style vintage and secondhand clothing store in Icheon, Korea — outerwear, golf and outdoor gear, shoes, kidswear.
RetailClient2026
Eugine Trust
Licensed administrative agent office in Seoul — regulatory and certification consulting, visa filings, certified translation.
LegalClient2026
Joyce Office
Legal advisory and certified translation office in Seoul — real estate registration for foreign nationals and overseas Koreans.
LegalClient2026
Joy Son Realty
Real estate agency in Hwaseong, Korea specializing in investment properties — apartments, officetels, villas, warehouses.
Real EstateClient2026
Hola Attorney
Certified Korean-Spanish translation, notarization, apostille, and immigration support for Spain and Latin America.
LegalClient2026
James Apostille
Administrative office in Seoul — apostille, document legalization, certified translation, visas, company setup.
LegalClient2026
James Realty
Real estate agency for Seoul properties — apartments, officetels, villas, single-family homes for sale and rent.
Real EstateClient2026
LnA
Court-ready certified translation and international litigation support for cross-border legal documents and patent filings.
LegalClient2026
On-Admin
Licensed administrative agent office in Seoul — visa filings, administrative and military appeals, business licensing.
LegalClient2026
Wonsuk Choi
Portfolio website and product hub. Also building the backend for Optimizer, a private all-in-one internal platform replacing multiple third-party tools, currently used privately with a public release planned later.
PortfolioFounder2026
Medipanion
Multilingual platform helping foreigners navigate healthcare in Korea.
56 visitors·3.7K impressions·28d
HealthcareFounder2025
Online Medical Tools
Free online medical calculators and health tools. Compute health metrics like BMI, kidney function, and fitness measurements directly in the browser.
11 visitors·8.6K impressions·28d
HealthcareFounder2026
Looksee Health App
Scan packaged food and cosmetic products to reveal what's really inside. Detailed ingredient breakdowns, health scores, and safety ratings to help you make smarter choices.
HealthcareFounder2026
MassageGo
On-demand massage platform connecting freelance masseurs with customers. Solved the industry's tech gap with programmatic SEO for organic growth.
862 visitors·27K impressions·28d
WellnessFounder2026
Island Seeker
AI-powered business directory for Guam. Personalized recommendations, real-time insights, and curated local knowledge for residents and travelers.
212 visitors·41K impressions·28d
Local ServicesFounder2026
Teoraspace
SEO agency for AI search engines focused on AI discovery and distribution.
15 visitors·3.3K impressions·28d
AI & SEOFounder2026
AI & SEOFounder2026
Crondex
Pre-made cron jobs any AI agent can pull, tweak, and schedule. Open-source catalog, ships as an npm CLI.
AI & SEOOpen Source2026
Domain Experts
Open-source library of job role definitions so any AI agent can reason like a real practitioner, not a generalist.
AI & SEOOpen Source2026
Vietnam Legal Support
Legal support services for Vietnam. Helping individuals and businesses navigate Vietnamese law with clear, accessible guidance.
LegalFounder2026
Tools 1
- Sovereignty Through Ownership: Why It Matters More Now
- Supabase Cost: One Project vs. Many — What Running 13 Sites Taught Me
- Hermes: My Personal AI Agent, and What It Actually Automates
- How I Added 13 Languages to My Next.js Site Without Wrecking SEO
- Coolify vs Vercel: I Moved 8 Projects — Here's the Real Cost Difference (2026)