Isaiah Kim

Founder of Kynth Studios. Staff engineer designing and shipping AI-native products end to end. I write up the specific problem, decision and fix.

New York, NY Joined on Jun 12, 2026 kyisaiah47@gmail.com https://kynth.studio

Isaiah Kim

Aug 14

I shipped a download that iOS turned into a navigation

#webdev #javascript #ios #react

4 min read

Isaiah Kim

Aug 11

I built a Playwright gate that cried wolf 889 times

#webdev #playwright #testing #css

5 min read

Isaiah Kim

Aug 9

The early return that shipped a false all-clear

#webdev #typescript #nextjs #buildinpublic

4 min read

Isaiah Kim

Aug 7

I paged a table with no ORDER BY and lost 2,797 rows

#postgres #sql #node #webdev

4 min read

Isaiah Kim

Aug 5

I rewrote 1.2M Postgres rows a run to change nothing

#postgres #supabase #python #buildinpublic

5 min read

Isaiah Kim

Aug 2

unstable_cache stored my outage for a full hour

#nextjs #caching #webdev #debugging

4 min read

Isaiah Kim

Jul 31

Custom element FOUC: the rule that hid nothing

#webdev #webcomponents #css #javascript

4 min read

Isaiah Kim

Jul 27

Ranking a dashboard by funnel depth, not counts

#analytics #product #webdev #buildinpublic

4 min read

Isaiah Kim

Jul 25

Seek-safe animation: one paused timeline, scrubbed

#javascript #animation #webdev #gsap

5 min read

Isaiah Kim

Jul 23

Why a CSS diff reads right and renders wrong

#webdev #css #playwright #frontend

6 min read

Isaiah Kim

Jul 21

Recording product demos with Playwright and no human

#playwright #automation #testing #webdev

6 min read

Isaiah Kim

Jul 16

Getting paid is a state-machine problem

#webdev #typescript #startup #buildinpublic

5 min read

Isaiah Kim

Jul 10

What 1,000 invoices a month actually costs across five document-AI APIs

#api #ocr #documentai #saas

2 min read

Isaiah Kim

Jul 10

I benchmarked my document-extraction API against Textract and Google DocAI — on public datasets, in public CI

#ai #ocr #benchmarking #opensource

3 min read

Isaiah Kim

Jul 9

How one person runs a whole studio of production apps

#webdev #architecture #ai #saas

5 min read

DEV Community

Isaiah Kim

Badges

Writing Debut

Skills/Languages

I shipped a download that iOS turned into a navigation

I built a Playwright gate that cried wolf 889 times

The early return that shipped a false all-clear

I paged a table with no ORDER BY and lost 2,797 rows

I rewrote 1.2M Postgres rows a run to change nothing

unstable_cache stored my outage for a full hour

Custom element FOUC: the rule that hid nothing

Ranking a dashboard by funnel depth, not counts

Seek-safe animation: one paused timeline, scrubbed

Why a CSS diff reads right and renders wrong

Recording product demos with Playwright and no human

Getting paid is a state-machine problem

What 1,000 invoices a month actually costs across five document-AI APIs

I benchmarked my document-extraction API against Textract and Google DocAI — on public datasets, in public CI

How one person runs a whole studio of production apps