Looking for a job

Kelvin Loh

@kelvinloh

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I build Python Flask applications that automate business workflows and payments.

Malaysia

Message

What I'm looking for

I'm looking to build Python and Flask applications that automate business workflows, integrate APIs and payments, and take products from requirements through deployment and maintenance.

I build Python and Flask web applications for business automation, including REST APIs, database-driven systems, payment workflows, and third-party integrations.

As an independent developer at How App & Web, I've developed Flask applications, integrated Stripe Payment and QuickBooks Online APIs, and managed requirements, testing, deployment, and ongoing software maintenance. I've also designed and maintained Python desktop applications.

My How E-Invoice Portal project manages electronic invoicing workflows and batch files using Flask, Flask-SQLAlchemy, PostgreSQL/SQLite, Flask-Login, OAuth, REST APIs, Excel automation, and background jobs. It is deployed on Render and supports payment callbacks and scheduled processing.

I also write technical articles and tutorials on Python, Flask, and automation at python-post.blogspot.com. I've built 5+ Python Flask automation applications and published 30+ Python and Flask tutorials.

Experience

Work history, roles, and key accomplishments

Current

Technical Blogger

Current

python-post.blogspot.com

Jan 2026 - Present (7 months)

Authored technical articles on Python, Flask, and automation, and built sample applications and tutorials to demonstrate practical development skills.

Python Flask Automation Tutorials

Current

Python Developer

Current

How App & Web

Jan 2025 - Present (1 year 7 months)

Developed Python and Flask web applications for business automation, including REST APIs and integrations with Stripe Payment and QuickBooks Online APIs. Managed client requirements, testing, and software maintenance.