Open to opportunities

Joshua Musyoki

@joshuamusyoki

Message

I build secure Android and web financial products for millions of users.

Kenya

Message

What I'm looking for

I'm looking to build secure, high-performance mobile and web products, especially in FinTech and digital financial infrastructure, while collaborating with Agile cross-functional teams on user-centric experiences.

At Transsion Holdings, I engineer high-security Finance and USSD Repository applications for Tecno, Infinix, and Itel devices, maintaining 99.9% crash-free sessions for millions of active users. I translate complex financial flows into responsive Jetpack Compose interfaces and reduced onboarding drop-off by 15%.

I've also built Stawi, a personal finance and youth community app with investment and tax calculators, messaging, forums, and accessibility-focused controls. Across freelance Android, Flutter, and full-stack projects, I build clean, secure products using Kotlin, React, Spring Boot, REST APIs, and modern Android architecture.

Experience

Work history, roles, and key accomplishments

Current

Android Engineer

Current

Transsion Holdings

Nov 2024 - Present (1 year 10 months)

Engineered and optimized high-security Finance and USSD Repository system applications for Tecno, Infinix, and Itel devices, maintaining 99.9% crash-free sessions for millions of active users. Implemented secure local data persistence using Room and EncryptedSharedPreferences, integrated with real-time RESTful APIs and JSON data synchronization.

Kotlin Jetpack Compose ROOM EncryptedSharedPreferences REST APIs JSON UI UX Performance Optimization Security Unit Testing Integration Testing SOC

Education

Degrees, certifications, and relevant coursework

Chuka University

Bachelor of Science, Applied Computer Science

2019 - 2023

Pursued a Bachelor of Science in Applied Computer Science with a focus on systems analysis, advanced software engineering, and multi-tier project planning.