Profile

Based at a textile factory in Thailand, I build Tauri (Rust) desktop applications that automate day-to-day operations. My focus is replacing manual Excel/VBA workflows with purpose-built tools — production scheduling, QC inspection logs, and more — that make daily operations smoother. I was born in Hokkaido, Japan in 1978. Drawn to art from an early age, I attended fashion design school after high school. Afterward, I worked at a menswear manufacturer, designing and creating patterns in Tokyo while traveling to factories every month to learn hands-on craftsmanship. An interest in overseas production led me to an Internet search company in China, where I helped build a search database in Liaoning Province while picking up Internet technology, HTML, and Chinese. Helping out at a local apparel trading company drew me back into textiles, and I relocated to Shanghai. My Chinese language skills opened the door to a role at a Japanese inspection company, where I served as base manager in Jiangsu Province. By analyzing and improving operations, I significantly reduced complaints and contributed to sales growth. I was then sent to rebuild an underperforming branch in Thailand, transferring to a local joint venture and taking charge of overall corporate management while learning Thai. I launched new ventures — restaurants, a select shop, a car wash business — and turned an accumulated deficit into sustained profitability. I treated the COVID-19 pandemic as a turning point, starting the development of internal business management software to further streamline operations. Learning VBA sparked a genuine love of programming, and I began studying online in earnest. Once the Thailand company was running smoothly under local staff, I decided to build a career around what I love and went independent. Today I run my own practice developing Tauri (Rust) desktop applications that automate operations for a textile factory in Thailand.

MITSUMASA WATAYA

Tauri / Rust Desktop App Developer Grounded in hands-on craftsmanship and cross-border business leadership

Experience

Director - Harus Impact (Thailand) Co Ltd.

2022-Jul

GF Co., Ltd.'s franchise business. Other services include restaurants, import/export and sales of apparel miscellaneous goods, warehouses, car washes, etc.

Thailand


Branch Manager - GF Co., Ltd.

2013-Jun

Inspection logistics processing business. That mainly deal with apparel products, and also do inspections of furniture and miscellaneous goods, needle reading and logistics agency services, shipping agency services for mail order logistics, etc.

Wuxi, China


Pattern Maker - OHGA Co.,Ltd.

2008-Dec

Manufacture, wholesale and sale of men's and women's clothing

Toyko, Japan


Web Surfer - NHN Service Technology Corp.

2010-May

Internet search site database construction and analysis business and online game community site business

Dalian, China


Education

Fashion Design - Tokyo Mode Gakuen College of Fashion and Design

2004

Tokyo, Japan


Genaral - YUTO HighSchool affiliated with. Hakodate University

1998

Hokkaido, Japan


Software

Excel, Word, Adobe Photoshop, Illustrator

Skills

Rust
Tauri v2
TypeScript / JavaScript
Python
SQL / SQLite
VBA
HTML / CSS
Django