Open to opportunities

Joseph Olumeyan

@josepholumeyan

Message

I build reliable Kotlin Android and Spring Boot products end to end.

Nigeria

Message

What I'm looking for

I'm looking to build end-to-end mobile and backend products where I can own features from database schema to UI state, deepen my work in Kotlin and Android, and solve reliability, concurrency, caching, and system-design challenges.

I've built Mowa, an AI career companion, end to end in Kotlin, pairing a Jetpack Compose Android client with a Spring Boot and PostgreSQL backend. I designed its seven-layer memory system, AI-provider failover, billing verification, rewarded-ad unlocks, and security controls to keep the experience fast, continuous, and reliable.

For Channel0, I built a continuous playback platform with an Android MVVM and Repository client and a Spring Boot/JPA backend. I reduced playback-state inconsistencies by about 80% during testing and cut API resolution latency by about 30% through DTO, query, and Hibernate tuning.

I'm comfortable owning features from database schema to UI state, with a focus on concurrency, caching, fault tolerance, and client-server reliability. Earlier, I supported clients and standardized documents at Chidex Computer Center while training a new team member.

Experience

Work history, roles, and key accomplishments

Technical Support Specialist

Chidex Computer Center

Sep 2023 - Dec 2023 (3 months)

Delivered client documents and provided digital support, resolving 90% of requests within 24 hours. Designed templates for schools and businesses, and trained a new team member.

Microsoft Office Document Design Troubleshooting