About
I build what people imagine.
I’m Joseph Mushi, a design engineer in Arusha, Tanzania. I design products in Figma and build them in React, Flutter and NestJS.
01 Why I build
Curiosity got me building. Good service keeps me at it.
When I see someone do their craft at their best, I want to do the same for the people I build for.
02 How I work
How I work
Listen first
Your idea, in your words, before any solution.
Show it early
Visuals you can react to before anything is built.
Build to last
Engineering you can maintain, explained plainly.
03 Experience
Experience and skills
Design Engineer · Mojaone Holding Limited
2026 – Present
Responsive, user-centred frontends and reusable React components for production fintech products, built with designers and backend teams (NestJS).
Product Designer · Mojaone Holding Limited
2024 – 2026
Led end-to-end design for fintech apps: research, user flows, prototypes, high-fidelity UI and a shared design system.
Software Developer, Field Trainee · National Bank of Commerce
2023
Built and debugged core-banking features in Laravel and React, alongside senior engineers in an Agile team.
Design
- UX research
- Prototyping and UI design
- Design systems
Engineering
- React, TypeScript, React Native, Flutter
- NestJS, Laravel, Java, Spring Boot, Python, FastAPI
- PostgreSQL, SQL, REST APIs
Tools
- Figma and Miro
- Git and GitHub
- Expo, TanStack, Claude
Let’s talk
Have an idea? Let’s bring it into focus.
Booking calls now · Pick a time that suits you