Charlie Sim

Product Manager × Founder × Technical Doc Engineer

The Front Page

Podcast · Just Published

State Transitions — Understanding RPD 2

A sixteen-part developer podcast dissecting Ripple Payments Direct 2.0, from identity management and quotes to the payment state machine, error handling, and cross-border compliance.

Projects

Automation

GitHub-to-Slack Automation

A fully automated weekly update system that transforms markdown into formatted Slack posts. Runs every Monday at 8 a.m., regardless of vacation schedules. Python · GitHub Actions · Slack API.

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Tooling

Slack Traffic Bot

A keyword-aware Slack bot that gently redirects support questions and bug reports out of announcement channels and into the right rooms. Helpful without being annoying. React · Slack Bot · NLP.

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About

SimWorks Technology & AIpp World

An AI-first company, and a summer program for the next generation of builders.

I am the founder of SimWorks Technology, an AI-first company building the next generation of intelligent applications. Through SimWorks, I also run AIpp World, an annual summer internship that teaches the next generation of developers how to build applications using AI-assisted development.

The program introduces students to “vibe coding” — using large language models to generate code from natural language — while learning the full app lifecycle from idea to deployment. Our 2025 inaugural class shipped iOS applications from scratch to the Apple App Store, emphasizing hands-on learning, agile workflows, and real-world project management.

The Newsletter

Read me on Substack

Notes on technical writing, automation, and building tools that make work easier. No spam, no fluff — just practical knowledge.