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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 โ€” and yes, the occasional joke to keep momentum high.

NB: I ship in parallel โ€” Iโ€™ve got a twin.

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Skills & Certs

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Mobile Development

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

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Cloud & DevOps

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

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Machine Learning

TensorFlow, Scikit-learn, NumPy, Pandas

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Backend & Databases

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

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Web Development

React, HTML/CSS, JavaScript

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Tools & Technologies

Git, Gradle, Android Studio, Postman

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Currently Exploring

AWS, Advanced Stock Trading

My Projects

MyQuiz Ktor Backend
AWS Beanstalk ยท MongoDB ยท Ktor

MyQuiz โ€” Ktor Backend

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

MyQuiz Compose App
Koin DI ยท Compose

MyQuiz โ€” Compose App

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

SampleNews Kotlin Multiplatform App
Kotlin Multiplatform ยท Compose Multiplatform

SampleNews โ€” 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.

Equityjamii Startup App
Android Views ยท Firebase Firestore

EquityJamii โ€” 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.

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Let's Connect

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

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Email

My Mail

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Location

Chicago, IL

LinkedIn

LinkedIn

My Profile

GitHub

GitHub

My GitHub