Hi there, meet |

I build at the intersection of Machine Learning, Cloud Computing, App development, and Finance.

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About Me

Ray Simbiri Professional

Who is this handsome fella?

I'm a UChicago CS student specializing in ML. I design cross-platform products with Kotlin and Compose Multiplatform, expose typed APIs with Ktor on AWS, and keep data fast and reliable using MongoDB Atlas in the cloud and Room/SQLDelight locally.

I value continuous learning, clear communication, and building things that are easy to maintain. I use clean architecture and solid error handling to keep apps smooth and reliable across platforms.

I bring a thoughtful, and collaborative style — and yes, the occasional joke to keep momentum high.

NB: I ship in parallel — I’ve got a twin.

Contact Me

Skills & Certs

📱

Mobile Development

Kotlin, Compose Multiplatform, MVVM, Koin DI, Room & SQLDelight

☁️

Cloud & DevOps

AWS Elastic Beanstalk, Route 53 (DNS), ACM (TLS), GitHub Actions (CI/CD)

🤖

Machine Learning

TensorFlow, Scikit-learn, NumPy, Pandas

🗄️

Backend & Databases

Ktor, MongoDB Atlas, Firebase Firestore, PostgreSQL, SQLite (Room/SQLDelight)

🕷️

Web Development

React, HTML/CSS, JavaScript

🔧

Tools & Technologies

Git, Gradle, Android Studio, Postman

🎓

Certifications

Advanced Stock Trading, ML, DSA, KMP Masterclass, Full-Stack Compose & KMP, PostgreSQL, Ktor for Backend & Jetpack Compose, Foundations of Stock Trading

📈

Currently Exploring

AWS, Advanced Stock Trading

My Projects

My Alpaca terminal
Python · Scikit-learn · NumPy & Pandas

Alpaca Market Terminal

An end to end paper trading platform equipped with technical indicators, backtest, order and risk managers, and ML prediction features.

source code
MyQuiz Ktor Backend
AWS Beanstalk · MongoDB · Ktor

MyQuiz — Ktor Backend

REST API for quiz content with typed routes and JSON DTOs; handles CRUD of data for MyQuiz app.

source code
MyQuiz Compose App
Koin DI · Compose

MyQuiz — Compose App

Compose quiz client with clean MVVM architecture, offline Room db, and a clean results view.

source code
SampleNews Kotlin Multiplatform App
Kotlin Multiplatform · Compose Multiplatform

SampleNews — Global Investment News

A multiplatform news reader with shared business logic, SQLDelight database, and thin UI shells.

Thumbnail displays app running as a desktop window.

source code
Equityjamii Startup App
Android Views · Firebase Firestore

EquityJamii — Socio-Professional Platform

Android prototype for a socio-professional community: clean Views UI, deep-link notifications, and Firestore-backed data with a single-activity navigation flow.

source code

Contact Me

Let's Connect

I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision.

📧

Email

My Mail

📍

Location

Chicago, IL

LinkedIn

LinkedIn

My Profile

GitHub

GitHub

My GitHub