Software Development
JavaScript
TypeScript
Python
React
Next.js
Node.js
Three.js
Kotlin
Web developer and data science enthusiast
I build things that actually work.
I’m Sayeem Sadik, also known as Leo Aristocrat. I build web projects, AI automations, and data-driven experiments that solve real problems instead of sitting around as polished demos.
About
Hey, I'm Leo — part developer, part problem creator, full-time learner.
I've been creating bugs since 2020 and debugging them since 2021. My interests sit at the intersection of web development, data science, artificial intelligence, mathematics, and systems thinking.
I enjoy building tools that solve real problems, automating repetitive work, and exploring ideas simply because they seem impossible at first. When I'm not coding, you'll probably find me studying statistics, experimenting with new technologies, or trying to shave a few seconds off a Rubik's Cube solve.
Skills
Data Science & AI
Data Analysis
Machine Learning
Artificial Intelligence
Pandas
NumPy
PyTorch
Statistics
Data Visualization
Tools & Infrastructure
Git
Docker
MongoDB
Linux
VS Code
GitHub
Mathematics & Problem Solving
Mathematics
Statistics
Analytical Thinking
Algorithmic Problem Solving
Beyond Code
Speedcubing
Self-Learning
Research
Technical Writing
Building Useful Tools
Currently exploring.
Artificial Intelligence
Machine Learning
Data Science
Modern Web Technologies
Systems Design
Projects
RegretTracker
A minimal decision reflection app for logging uncertain choices, setting check-in dates, and learning which worries were actually accurate over time.
ResourceRepublic
A curated directory of resources and tools, built to make useful references easier to collect, browse, and come back to.
SpendSense
A clean expense tracker for adding, editing, deleting, and filtering transactions while the balance updates live in dark or light mode.