Hi, my name is Leo Trieu I’m 33 and father to a 3-year-old boy.

I designed and coded the Code4Startup platform with Ruby on Rails in 3 days only but it took me almost 2 and half months to create just 5 hours of video for my very first two educational courses ever, Zero and Ninja. WHY? Because I am not a native English speaker and I had to practice and repeat hundreds of times. But I kept trying and never gave up.

I bootstrapped this startup with a dream of educating MILLIONS people from around the world. Code4Startup is not just about learning how to code, it's also about inspiring people to create something meaningful, something they are excited about.

So if I can start my journey, WHY CAN'T YOU???

2016 in Review - From Coder To Entrepreneur and the $300K/annual milestone

March 29, 2017 4 min read


2016 seems to be one of the biggest years of change I’ve ever had (business & personal side) so I just wanted to reflect key milestones of my journey over last year. [...]

If you want to start a side project, this is a Must-Read...

July 13, 2016 4 min read


In the previous post, I promised to show you how to transform your idea into an MVP and share growth hacking strategies that I used to gain traction in early stage. [...]

Yes, I personally replied 281 emails from you

July 02, 2016 4 min read


In the previous email, I shared with you my journey all the way. There were 281 responses and that really surprised me. Thanks guys for sharing! [...]

I made $150K over the last 12 months since I quit my job

June 30, 2016 4 min read


Note: This was the exact content of the email I sent out to C4S community on June 30, 2016. This is unusual email because I normally don’t say what I’m about to share [...]

[AMA] 2016 and I looked back my way in 2015

January 19, 2016 4 min read


Code4Startup (or C4S like we called it) was just a side project that I worked on while I was working full-time as a software engineer. I quit my job around September 2015 [...]

I Quit My Job Today to challenge Code4Startup in Silicon Valley

October 02, 2015 4 min read


I sat in the Gloria Jean’s coffee and reflected the passed road since I founded C4S. I started with sleepless nights, long hours of English practicing [...]

Real-time web development against multiple devices

July 21, 2015 4 min read


It’s already very obvious to many software developers that one of the most important aspects of development process is the time it takes to see target application [...]

How a Chinese student hacked my TaskNinja application

July 15, 2015 4 min read


This week, I wanted to share with you an interesting situation regarding security in Angular and Firebase that I experienced with my TaskNinja application. [...]

Learn to code, create a startup and f*cking rule this world. Really?

July 06, 2015 4 min read


Today, the dream has changed. Everyone with a cool idea can create something to start their own career and commence to work on their own project. [...]