When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth 🤔🔍💡

📜🔨🌟 Software Craftmanship's manifesto

👋 My name is Tien Do. I work as a Ruby on Rails software engineer 💻🛤️. Ruby is among my first programming languages 🍀💻, and I feel fortunate to have found it for its unique freedom and expressive syntax 🤗💬. Thanks to Matsumoto and all developers who crafted this fantastic language 🙏👨‍💻🌟.

Ruby on Rails builds upon Ruby, and my enjoyment of Ruby underscores my passion for Ruby on Rails 🤩.

As a software engineer, I embrace a 🔄 continuously evolving approach to learning and growth. I'm dedicated to 🤔 maintaining curiosity and openness towards new technologies and techniques, always seeking ways to improve my skills and knowledge. When tackling challenges or seeking advice, I prioritize solutions that benefit my team and organization 👥. I am 🎉 passionate about crafting code that is readable, scalable, and maintainable. Moreover, I understand that 🌊 change is constant in both software engineering and life, and I'm prepared to adapt and evolve to stay ahead 🏃‍♂️📈🔄.

• Quick learning, adapting to new technologies, teams, and organizations 🚀
• Proficient in Ruby and familiar with other programming languages such as Python, Go, Haskell, JavaScript... 💻
• Strong problem-solving and strategic thinking skills 🤔💡
• Experience with software architectures such as microservices, distributed system 🏗️
• Familiarity with cloud platforms such as AWS ☁️
• Strong debugging and troubleshooting skills 🔍🐞

🐱 My GitHub Data

📦 357.1 kB Used in GitHub's Storage

🏆 169 Contributions in the Year 2025

💼 Opted to Hire

📜 337 Public Repositories

🔑 18 Private Repositories

I'm an Early 🐤

🌞 Morning                1162 commits        ████░░░░░░░░░░░░░░░░░░░░░   17.86 % 
🌆 Daytime                2199 commits        ████████░░░░░░░░░░░░░░░░░   33.79 % 
🌃 Evening                2559 commits        ██████████░░░░░░░░░░░░░░░   39.33 % 
🌙 Night                  587 commits         ██░░░░░░░░░░░░░░░░░░░░░░░   09.02 % 

📅 I'm Most Productive on Tuesday

Monday                   687 commits         ███░░░░░░░░░░░░░░░░░░░░░░   10.56 % 
Tuesday                  1611 commits        ██████░░░░░░░░░░░░░░░░░░░   24.76 % 
Wednesday                881 commits         ███░░░░░░░░░░░░░░░░░░░░░░   13.54 % 
Thursday                 514 commits         ██░░░░░░░░░░░░░░░░░░░░░░░   07.90 % 
Friday                   846 commits         ███░░░░░░░░░░░░░░░░░░░░░░   13.00 % 
Saturday                 1148 commits        ████░░░░░░░░░░░░░░░░░░░░░   17.64 % 
Sunday                   820 commits         ███░░░░░░░░░░░░░░░░░░░░░░   12.60 % 

📊 This Week I Spent My Time On

💬 Programming Languages: 
Other                    1 hr 25 mins        ██████████████████░░░░░░░   70.59 % 
Ruby                     35 mins             ███████░░░░░░░░░░░░░░░░░░   29.41 % 

🔥 Editors: 
Firefox                  1 hr 25 mins        ██████████████████░░░░░░░   70.59 % 
Neovim                   35 mins             ███████░░░░░░░░░░░░░░░░░░   29.41 % 

I Mostly Code in Ruby

Ruby                     49 repos            ███████████░░░░░░░░░░░░░░   44.95 % 
Go                       21 repos            █████░░░░░░░░░░░░░░░░░░░░   19.27 % 
Python                   11 repos            ███░░░░░░░░░░░░░░░░░░░░░░   10.09 % 
Shell                    3 repos             █░░░░░░░░░░░░░░░░░░░░░░░░   02.75 % 
C                        3 repos             █░░░░░░░░░░░░░░░░░░░░░░░░   02.75 % 

Timeline

Last Updated on 09/10/2025 12:17:36 UTC

There is no large codebase in any language that has zero accidental complexity. There are awkward bugfixes. There are workarounds. There are mitigations. There are many many reasons why the useful code won't be pure and beautiful 💻🐞🤔

Changeability is the only design metric that matters; code that's easy to change is well-designed 🛠️🔄🎨

Like many human endeavors, design is part art, part engineering, and part guesswork and experimentation. Discipline, hard work, inspiration, and sound technique all play their parts 🎨🧑‍💻🔬🧪

Mak­ing even a sim­ple change to a mono­lith­ic code­base is pret­ty hard because you must under­stand the entire thing very well. Mak­ing changes to small­er, well-defined mod­ules is much easier 💡💻🤔

Do what you feel in your heart to be right – for you’ll be criticized anyway 💖🙏🗣️