Ruan Muller

Developer from South Africa 🇿🇦 building profitable APIs | Studying Bachelor of Accounting | Turning financial knowledge into developer tools

South Africa Joined on Apr 4, 2026

Education

Stellenbosch University, Bachelor of Accounting

Ruan Muller

Apr 17

I Built a Resume Analyzer & Job Match Scoring API. Here's How It Works

#node #javascript #api #career

4 min read

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Ruan Muller

Apr 15

I Built a Phone Number Validator & Formatter API for 50+ Countries — Day 6 of 21

#node #javascript #api #webdev

3 min read

Ruan Muller

Apr 14

I Built an Email Validator & Disposable Email Checker API - Day 5 of 21

#webdev #node #javascript #api

4 min read

Ruan Muller

Apr 13

I Built a Text Readability Scorer API with Flesch-Kincaid, Gunning Fog and More — Day 4 of 21

#node #javascript #api #webdev

4 min read

Ruan Muller

Apr 12

I Built a VAT Number Validator API for 35 Countries - Day 3 of 21

#node #javascript #api #webdev

3 min read

Ruan Muller

Apr 5

Day 2 of my 21-day API challenge, built a Password Strength & Security Scorer API

#node #javascript #api #security

3 min read

Ruan Muller

Apr 4

I Built an Invoice Parser API in One Day

#node #javascript #api #webdev

3 min read

DEV Community

Ruan Muller

Badges

Writing Debut

I Built a Resume Analyzer & Job Match Scoring API. Here's How It Works

Want to connect with Ruan Muller?

I Built a Phone Number Validator & Formatter API for 50+ Countries — Day 6 of 21

I Built an Email Validator & Disposable Email Checker API - Day 5 of 21

I Built a Text Readability Scorer API with Flesch-Kincaid, Gunning Fog and More — Day 4 of 21

I Built a VAT Number Validator API for 35 Countries - Day 3 of 21

Day 2 of my 21-day API challenge, built a Password Strength & Security Scorer API

I Built an Invoice Parser API in One Day