Joshua Sultan
I build software, then try to make it simpler.
Senior Mobile Engineer building beyond mobile.
For more than fourteen years I've built mobile software — native iOS and Android, React Native, and the SDKs and authentication systems underneath them. Mobile is still where most of my working hours go. Alongside it, I'm building and learning in product engineering and applied AI.
01 — Selected Work
A few things I've built
A few personal projects I've been building and exploring
- 01
Ship or Skip
An AI-assisted decision engine for product teams. It evaluates feature ideas, product changes, and strategic concepts through a structured framework, combining AI-generated reasoning with deterministic scoring to produce a Ship, Refine, or Skip verdict.
- 02
Pulse
A leadership platform helping churches understand and care for their people. Built around discipleship visibility, member records, dashboards, and follow-up, giving church leaders a clearer view of where people are and where care may be needed.
- 03
Compass
A leadership platform for preserving direction, continuity, and care across ministries and changing seasons. A shared place for plans, activities, updates, meetings, decisions, and follow-through—helping important ministry context remain available when leaders change.
02 — Engineering
Built on mobile. Growing beyond it.
I've spent more than a decade building mobile software across iOS, Android, React Native, and Flutter. My work has grown beyond application development into SDKs, authentication and security, architecture, CI/CD, reliability, and product thinking.
Today, mobile remains my professional foundation. Alongside it, I'm learning and experimenting with product engineering and applied AI through the things I build on my own.”
Mobile
- iOS
- Android
- React Native
- Flutter
SDKs & Security
- Mobile SDKs
- Authentication
- FIDO2
- Passkeys
- UMFA
Engineering
- Architecture
- CI/CD
- Reliability
- Modernization
Product
- Problem solving
- UX
- Product thinking
- End-to-end development
03 — Writing
The Simple Engineer
Notes on software engineering, simplicity, leadership, and product thinking.
Building Ship or Skip (opens in a new tab)
What creating an AI-assisted product validation tool taught me about building in the age of AI.
Simplicity Is Not a Shortcut (It’s a Responsibility) (opens in a new tab)
Why simple solutions age better than complex ones.
What 13 Years of Mobile Taught Me About Staying Relevant (opens in a new tab)
Lessons on adapting, learning, and growing through change.
04 — About
About & connect
I'm Joshua — a mobile engineer with more than fourteen years of experience building native iOS and Android apps, React Native products, and the SDKs and authentication systems that hold them together. Mobile is still where most of my working hours go. Alongside that, I write at The Simple Engineer and build small products of my own, learning through product engineering and applied AI firsthand. Still building. Still learning.