Mobile Software Architect · Technical Leader · Entrepreneur
14+ years engineering high-impact mobile products — from architecture to App Store. Trusted by startups, enterprises, and government institutions across three continents.
Business Identity
Official identity and contact details for business verification purposes.
About
Houssem Sdiri is a computer engineer with over 14 years of professional experience in mobile software development. He specializes in iOS architecture and has extensive knowledge in Android development, backend system design, REST API integration, and technical project management.
As the founder, CEO, and CTO of Arappdev LLC, Houssem leads end-to-end product development — from initial system design through deployment and maintenance. His company provides mobile development, backend engineering, and technical consulting services to clients ranging from early-stage startups to large institutions.
He has led development teams of 3 to 15 engineers and has personally delivered over 50 mobile applications, accumulating more than 3 million downloads. His work spans fintech, healthtech, edtech, and digital media, with a consistent focus on clean architecture, performance, and user experience.
Since 2023, Houssem also serves as Mobile Solution Architect and Lead iOS Developer at Treatably Ehf., an Icelandic healthcare startup, where he builds AI-powered medication management features under strict GDPR and HIPAA compliance requirements.
Services
End-to-end mobile and software engineering services for businesses that demand quality.
Native iOS development using Swift and Objective-C. From concept to App Store — including UI/UX implementation, Core Data, Core Bluetooth, and complex animations.
Android development with modern architecture patterns. Full lifecycle delivery including Google Play optimization and device compatibility testing.
Design and implementation of RESTful APIs, backend services, and database systems. Experience with C#, SQL Server, Firebase, and real-time WebSocket architectures.
End-to-end technical architecture for mobile-first products. Scalable patterns (MVC, MVVM, Clean Architecture), CI/CD pipelines, and infrastructure planning.
Integration of machine learning models, camera-based recognition, and intelligent automation into mobile applications. Practical AI for real product value.
Strategic technical direction for mobile products. Team mentoring, sprint planning, code reviews, and quality assurance across the full SDLC.
Building applications that target both iOS and Android efficiently, leveraging shared business logic while maintaining native performance and UX standards.
Experience
A track record of building, leading, and delivering.
Projects
Real-world products built and shipped.
An AI-powered medication management app for an Icelandic healthcare startup. Features include camera-based drug recognition, automated interaction checking, and a patient-facing health dashboard — built to GDPR and HIPAA compliance standards.
A high-performance mobile trading application with real-time market data via WebSocket connections. Designed for low-latency updates, supporting 25,000+ daily active users with reliable uptime and responsive charting.
A mobile digital library featuring OCR-based Arabic text search and integration with the National Library system. Enabled users to search, browse, and read digitized Arabic manuscripts and publications on mobile devices.
Tech Stack
Core competencies refined over 14+ years of hands-on engineering.
Credibility
Education, certifications, awards, and languages.
Contact
Available for consulting, contract work, and partnership opportunities.