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Caleb Grimah

Caleb Grimah.

Senior software engineer.

Abuja, Nigeria · Working across platforms

I build complete products — from the interface in your hand to the services behind it. My work spans streaming, healthcare, and business software across mobile, web, and connected TV. I’m currently building Astera for creator campaigns and Omari for everyday business operations.

Explore my work Resume

Notable projects

Full portfolio

Products I’m building, and the platforms I’ve helped bring to life.

Astera

Astera brand workspace with campaign budgets, performance charts, and creator activity Astera creator app showing earnings, campaigns, and available briefs
Brand workspace and creator app design previews · sample data

A creator-marketing platform connecting brands and creators in Nigeria. Campaign briefs, content review, results tracking, and payments in one workspace.

React / React Native / TypeScript / Kotlin / Spring Boot

Project details: Astera

Omari

Original Omari customer app mockup showing the home screen, business discovery, and delivery updates Original Omari customer app mockup showing a business storefront, service listings, and appointment booking
Original customer app mockups · Home and business storefront · sample data

A platform for Nigerian businesses, bringing bookings, commerce, payments, delivery, and analytics together across customer, business, and rider experiences.

Kotlin Multiplatform / Compose Multiplatform / React / Spring Boot

Project details: Omari

ArcadeReality

ArcadeReality engineering studio website showing its service introduction and interactive code presentation Mobile view of the ArcadeReality engineering studio homepage
Desktop and mobile previews of the live ArcadeReality website

A website I built for ArcadeReality, a senior engineering studio. It brings together engineering services, product case studies, technical writing, and a project inquiry flow.

Responsive web / Case studies / Technical publishing / Project inquiries

Project details: ArcadeReality

More production work

Vesper Streaming Platform

At Endeavor Streaming, I build reusable product features across mobile, web, and connected TV, adapting navigation and performance to each screen and input model.

React Native / React / TypeScript

Healthcare at eHealth Africa

At eHealth Africa, I worked across patient applications, healthcare operations, and backend services — connecting appointments, medical records, payments, and care.

Mobile / Web / Backend services

Udongo · Offline-first Android

An offline-first Android application for agricultural extension agents. Local persistence and background synchronization keep core workflows available when the network isn’t.

Android / Local persistence / Sync

How I build.

Different screens. Unreliable networks. Devices with limited resources. I care about the details that make software useful beyond the development environment.

My work connects React Native, React, and native Android interfaces with Node.js and Spring Boot services. Alongside implementation, I contribute through code review, performance diagnosis, and technical mentoring.

More about my experience

Notes & ideas

Visit the journal

A quieter corner for thoughts, experiments, and things I’m learning.

Have something in mind?

For engineering conversations, collaborations, or a simple hello.

caleb.grimah@gmail.com caleb.grimah@arcadereality.org