Senior Mobile
Developer
I craft high-performance Android & iOS apps that users love, from startup MVPs to apps with 5M+ downloads. 6+ years of shipping to Play Store & App Store.
Total downloads across Play Store and App Store
Production apps shipped on both platforms
User ratings across published applications
Years building Android & iOS apps professionally
Passionate about building apps people love.
I'm Nadeem Aslam, a mobile developer with 6+ years of experience shipping Android and iOS apps. My work has reached millions of users across Play Store and App Store.
At Invotyx, I lead a team of 5 engineers building production apps in Kotlin, Swift, and Jetpack Compose. Our flagship VPN app crossed 5M+ downloads with a 4.5-star rating. I've also integrated monetization strategies that boosted revenue by 35%.
Outside of my full-time role, I take on freelance projects. If you need a reliable developer for your next mobile app, let's talk.
Selected projects
Where I've worked
Senior Mobile Developer
Invotyx · Islamabad, PakistanLed team of 5 engineers. Built 15+ Android & iOS apps with 5M+ combined downloads. Increased revenue 35%. Improved performance 30% and retention 20%.
Freelance Mobile Developer
Fiverr · Level 2 Seller69 five-star reviews from clients across US, UK, Canada, Netherlands, and Saudi Arabia. Built native and cross-platform apps for international clients with repeat business.
Mobile Developer
FHA Technology · Islamabad, PakistanDeveloped 3 mobile apps. Built location-based app with Google Maps, backup app with Drive API (10K+ users), and file-sharing app (4.5★). Mentored junior devs.
Mobile Developer
DevSoft · Sargodha, PakistanContributed to e-commerce app with Firebase real-time updates. Reduced crash rates by 15% through rigorous debugging.
BS Computer Science
University of SargodhaWhat clients say
“Working with Nadeem is always exceptional. He don't only fix the problem you have, he gives you awesome tips and solutions for future issues. I've worked with Nadeem since 2022. I recommend 100%.”
“Nadeem works very quickly, and does not back down from a challenge. I had some relatively unusual requests for my app, and he figured out how to get them all working. Will be asking for more of his help in the future.”
“Quick and to the point. Very well done. Communication is clear and delivery was fast. Very happy!”
“He handled the Flutter development with confidence and clarity. The app feels stable, responsive, and well put together from both a user and technical point of view.”
“It was a pleasure to work with Nadeem. He completed the iOS and Android apps in a short time. I recommend to work with this guy. I hope he will be my apps developer from now on.”
“Nadeem is also reliable in terms of communication, specifications with attention to details. Another successful collaboration.”
Frequently asked questions
What platforms do you develop for?+
I build native Android apps using Kotlin and Java with Jetpack Compose and MVVM architecture, native iOS apps using Swift and SwiftUI with Core Data and Combine, and cross-platform apps using Flutter and React Native for simultaneous Android and iOS deployment. I also work with Kotlin Multiplatform (KMM) for sharing business logic across platforms while keeping native UIs. My Android development typically follows Clean Architecture with repositories, use cases, and ViewModels, while my iOS projects use SwiftUI with the Observation framework. I choose the platform and framework based on the project's requirements — native for performance-critical apps like VPNs and streaming players, cross-platform for MVPs and content-driven apps where faster time-to-market matters most.
What types of apps have you built?+
I have built VPN and networking apps with a combined 8.9M+ downloads including Virtual 5G and VPN Express, streaming and IPTV players like Smart IPTV Xtream Player (50K+ downloads) with ExoPlayer integration, AI chatbot assistants like Orion AI (4.5 stars on App Store) with multi-model support for Gemini and Claude, healthcare communication platforms like Doctoc with secure messaging and scheduling, smart TV remote control apps with auto device discovery, news aggregator apps pulling from sources like Forbes, CNN, and BBC, and business tools like Invoice Maker with 50+ templates and PDF generation. In total I have shipped 25+ production apps across both Google Play Store and Apple App Store with 5M+ combined downloads and 30K+ user ratings.
Do you work with international clients?+
Yes, I work with clients worldwide and have completed projects for businesses and individuals in the United States, United Kingdom, Canada, Netherlands, Saudi Arabia, Luxembourg, and Dominican Republic. I am a Level 2 Seller on Fiverr with 69 five-star reviews and a perfect 5.0 rating. I communicate in English, maintain a 1-hour average response time during business hours, and use tools like Slack, Jira, and GitHub for project collaboration. My timezone is Pakistan Standard Time (UTC+5) and I typically overlap with both European and US East Coast business hours for real-time communication.
Can you handle the full app lifecycle?+
Absolutely. I handle every stage of mobile app development from initial ideation and architecture planning through UI/UX implementation, backend integration, testing, Play Store and App Store deployment, and post-launch maintenance and updates. I have published 25+ apps across both stores and understand the submission guidelines, review processes, and optimization strategies for each. For Android I manage signing, ProGuard configuration, and staged rollouts. For iOS I handle certificates, provisioning profiles, and App Store Connect submission. I also set up CI/CD pipelines, crash reporting with Firebase Crashlytics, and analytics tracking to monitor app performance after launch.
How can I hire you?+
You can hire me through several channels depending on your preference. For freelance projects, I am available on Fiverr at fiverr.com/nadeem585 where I have 69 five-star reviews as a Level 2 Seller. You can also contact me directly via email at link2nadeemaslam@gmail.com or through WhatsApp at +92 301 531 1113 for a faster initial conversation. I am available for both short-term projects like bug fixes and feature additions as well as long-term contracts for full app development. My typical engagement starts with a free consultation to understand your requirements, followed by a detailed proposal with timeline and cost breakdown.