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Hi, I’m Saad Muhammad Ayub, a Senior Mobile Software Engineer with over 10 years of experience creating polished and high-performance Android and iOS applications. I specialize in modern technologies like Jetpack Compose, Kotlin, SwiftUI, and Swift, and I enjoy building scalable architectures that stand the test of time. My background includes releasing apps on the Play Store and App Store, deploying cloud-based APIs, and even training machine learning models to enhance app functionality. I’m passionate about crafting seamless user experiences and mentoring teams to deliver high-quality software. Whether it’s building a new MVP, integrating secure payment systems, or diving into sentiment analysis using ML techniques, I take pride in driving projects from concept to launch with an agile and product-driven approach. When I’m not coding, I enjoy collaborating with others and learning about the latest tech advancements.…Hi, I’m Saad Muhammad Ayub, a Senior Mobile Software Engineer with over 10 years of experience creating polished and high-performance Android and iOS applications. I specialize in modern technologies like Jetpack Compose, Kotlin, SwiftUI, and Swift, and I enjoy building scalable architectures that stand the test of time. My background includes releasing apps on the Play Store and App Store, deploying cloud-based APIs, and even training machine learning models to enhance app functionality. I’m passionate about crafting seamless user experiences and mentoring teams to deliver high-quality software. Whether it’s building a new MVP, integrating secure payment systems, or diving into sentiment analysis using ML techniques, I take pride in driving projects from concept to launch with an agile and product-driven approach. When I’m not coding, I enjoy collaborating with others and learning about the latest tech advancements.

Saad Muhammad Ayub

App Developer, Developer, Programmer, +2

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Hi, I’m Saad Muhammad Ayub, a Senior Mobile Software Engineer with over 10 years of experience creating polished and high-performance Android and iOS applications. I specialize in modern technologies like Jetpack Compose, Kotlin, SwiftUI, and Swift, and I enjoy building scalable architectures that stand the test of time. My background includes releasing apps on the Play Store and App Store, deploying cloud-based APIs, and even training machine learning models to enhance app functionality. I’m passionate about crafting seamless user experiences and mentoring teams to deliver high-quality software. Whether it’s building a new MVP, integrating secure payment systems, or diving into sentiment analysis using ML techniques, I take pride in driving projects from concept to launch with an agile and product-driven approach. When I’m not coding, I enjoy collaborating with others and learning about the latest tech advancements.…Hi, I’m Saad Muhammad Ayub, a Senior Mobile Software Engineer with over 10 years of experience creating polished and high-performance Android and iOS applications. I specialize in modern technologies like Jetpack Compose, Kotlin, SwiftUI, and Swift, and I enjoy building scalable architectures that stand the test of time. My background includes releasing apps on the Play Store and App Store, deploying cloud-based APIs, and even training machine learning models to enhance app functionality. I’m passionate about crafting seamless user experiences and mentoring teams to deliver high-quality software. Whether it’s building a new MVP, integrating secure payment systems, or diving into sentiment analysis using ML techniques, I take pride in driving projects from concept to launch with an agile and product-driven approach. When I’m not coding, I enjoy collaborating with others and learning about the latest tech advancements.

Available to hire

Hi, I’m Saad Muhammad Ayub, a Senior Mobile Software Engineer with over 10 years of experience creating polished and high-performance Android and iOS applications. I specialize in modern technologies like Jetpack Compose, Kotlin, SwiftUI, and Swift, and I enjoy building scalable architectures that stand the test of time. My background includes releasing apps on the Play Store and App Store, deploying cloud-based APIs, and even training machine learning models to enhance app functionality.

I’m passionate about crafting seamless user experiences and mentoring teams to deliver high-quality software. Whether it’s building a new MVP, integrating secure payment systems, or diving into sentiment analysis using ML techniques, I take pride in driving projects from concept to launch with an agile and product-driven approach. When I’m not coding, I enjoy collaborating with others and learning about the latest tech advancements.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Lead Software Engineer at MasnJar Inc.

April 1, 2025 - June 11, 2024

Led development of a social media app for food lovers on Android and iOS platforms. Built MVPs for both Android using Jetpack Compose, MVVM, and Room, and iOS using SwiftUI and Core Data, incorporating key features such as post and image publishing, user reporting, sentiment analysis, and caching. Designed and deployed secure REST APIs with Node.js and MongoDB, including JWT authentication and HTTPS. Developed a machine learning pipeline in Java to filter toxic posts on the backend, achieving 97.82% accuracy. Implemented personal data redaction for analytics and deployed backend services on AWS EC2.

Senior Mobile Software Engineer at SurPlate LLC

November 1, 2023 - April 30, 2025

Built Android and iOS e-commerce marketplace apps from scratch using Jetpack Compose, MVVM, Apollo Kotlin for GraphQL, Stripe SDK, Firebase Cloud Messaging, UIKit, MapKit, and Realm. Implemented in-app messaging with WebSockets and snapshot testing with Paparazzi. Automated Play Store deployments using Bitbucket Pipelines and Fastlane. Led and mentored an offshore iOS team with daily code reviews and ensured timely delivery. The company shut down in April 2025 after limited market traction.

Senior Android Developer at Beyond Inc. (Overstock.com)

January 1, 2022 - November 1, 2023

Contributed to refactoring the Android codebase from Jetpack to Jetpack Compose, improving maintainability and performance. Delivered features increasing user engagement and traffic, resolved critical bugs, participated in scrum ceremonies, collaborated with designers and product managers, and documented API specifications to align mobile and backend development.

Mobile Software Engineer at TaxAct Inc.

June 1, 2020 - December 31, 2021

Refactored the Android app from legacy Java to Kotlin and modern Jetpack libraries, replaced RxJava with Kotlin Coroutines for better maintainability. Integrated Amazon Cognito for enhanced authentication and security. Delivered features contributing to increased user engagement and wrote unit tests with mocked backend responses.

Mobile App Developer at Public Sector Digest Inc.

July 1, 2016 - February 28, 2019

Developed the company’s first Android mobile app for public works management in Canadian municipalities, enabling efficient scheduling and workflow management with offline support for low connectivity environments.

Android Developer at Diitalk Communications Inc.

February 1, 2016 - May 31, 2016

Developed key app features and resolved critical bugs for a communications app providing instant messaging and calling to improve functionality and stability.

Android Developer (Freelance) at Freelance

May 1, 2013 - January 31, 2016

Built and maintained custom Android applications for small business clients in the HVAC and pizzeria sectors, focusing on delivering tailored solutions.

Lead Software Engineer at MasnJar Inc.

April 1, 2025 - June 29, 2024

Led the development of a social media app for food lovers on Android and iOS. Built the Android MVP using Jetpack Compose, MVVM, and related modern frameworks, and iOS MVP using SwiftUI and Core Data. Implemented features such as posts, image publishing, sentiment analysis, and a user rewards system. Developed and deployed a custom ML toxicity filter backend in Node.js with a Java-based ML pipeline achieving 97.82% accuracy for content moderation. Designed secure REST APIs with JWT and MongoDB. Deployed backend on AWS EC2. Also built cache mechanisms and implemented real-time reporting and moderation workflows.

Senior Mobile Software Engineer at SurPlate LLC

November 1, 2023 - April 30, 2025

Built the SurPlate e-commerce cottage food marketplace app on Android from scratch using Jetpack Compose and related technologies, integrating GraphQL with Apollo Kotlin, Stripe payments, Firebase notifications, and WebSockets messaging. Led iOS development using UIKit and Realm, integrated Stripe and Apple Push Notifications, and mentored an offshore iOS team performing code reviews and delivery. Automated Play Store deployments with Fastlane and Bitbucket Pipelines. SurPlate shut down in April 2025 after limited market traction.

Senior Android Developer at Beyond Inc. (Overstock.com)

January 1, 2022 - November 1, 2023

Contributed significantly to refactoring the Android codebase to Jetpack Compose, improving app maintainability and performance. Delivered feature-rich updates boosting user engagement, resolved critical bugs to ensure stability, and collaborated in Agile scrum teams to refine features and maintain design consistency. Documented API specifications to improve mobile-backend integration.

Mobile Software Engineer at TaxAct Inc.

June 1, 2020 - December 31, 2021

Refactored the Android app from Java to Kotlin with modern Jetpack libraries and Coroutines replacing RxJava for better code quality. Integrated Amazon Cognito for improved authentication and security. Delivered key features enhancing user engagement, mocked backend responses, and wrote unit tests to validate API integration.

Mobile App Developer at Public Sector Digest Inc.

July 1, 2016 - February 28, 2019

Developed Citywide Works Android app for Canadian municipal public works departments, including offline storage support to maintain functionality in low connectivity environments.

Android Developer at Diitalk Communications Inc.

February 1, 2016 - May 31, 2016

Developed key features and resolved critical bugs for an instant messaging and calling communications app to improve functionality and stability.

Android Developer (Freelance) at Freelance

May 1, 2013 - January 31, 2016

Built and maintained custom Android apps for small business clients, including HVAC and pizzeria sectors.