Sajawal Zubairi

IOS Engineer

Islāmābād, Pakistan2 yrs 11 mos experience
Highly Stable

Key Highlights

  • Led platform redesign improving app performance.
  • Delivered 7+ scalable Android apps.
  • Expert in Kotlin and Clean Architecture.
Stackforce AI infers this person is a Fintech expert with a strong focus on scalable Android applications.

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Skills

Core Skills

KotlinAndroid Performance OptimizationClean ArchitectureRest Apis

Other Skills

Continuous IntegrationContinuous Delivery (CI/CD)RedesigningModular architectureMVVMGitHub ActionsFastlaneFirebase Cloud MessagingTechnical DesignCoroutinesFlowWebSocketsPush NotificationsJavaRetrofit

About

Tech Stack: Kotlin · Jetpack Compose · Android SDK · MVVM/MVI · Clean Architecture · Coroutines/Flow · Modularization · CI/CD (GitHub Actions, Fastlane) · Flutter (Cross-platform) Senior Android Engineer with 6+ years of experience building and scaling consumer and FinTech applications used by 500K+ monthly active users. I focus on performance, scalability, and maintainability working across the full product lifecycle from early discovery to production and iteration. Recently, I led a platform-level redesign of a large FinTech app, improving startup time by 25% and reducing memory usage by 15%, directly impacting user experience and retention. My work goes beyond feature delivery: Designing modular, scalable architectures for long-term growth Improving app stability and crash-free sessions Building and owning CI/CD pipelines to accelerate delivery Collaborating closely with product and design to ship meaningful features I also bring experience in Flutter for cross-platform development, enabling faster prototyping and shared feature delivery where appropriate. I bring a product mindset balancing technical decisions with user impact, performance, and business goals. 📍 Islamabad 🎯 Open to opportunities in EU (Visa sponsorship required)

Experience

2 yrs 11 mos
Total Experience
2 yrs 11 mos
Average Tenure
2 yrs 11 mos
Current Experience

Teresol pvt. ltd.

2 roles

Senior Android Engineer (Platform)

Jul 2023Present · 2 yrs 11 mos

  • Led platform redesign using Kotlin + Android performance optimization → reduced app startup time by 25% and memory usage by 15%
  • Designed modular architecture (MVVM, Clean Architecture) → improved scalability and accelerated feature delivery across teams
  • Built shared platform modules and reusable components → reduced duplication and improved development consistency
  • Established CI/CD pipelines (GitHub Actions, Fastlane, Gradle) → increased release reliability and reduced manual effort
  • Improved app stability using structured concurrency + monitoring (Crashlytics, Datadog) → significantly increased crash-free sessions
  • Mentored engineers and guided architectural decisions → raised overall code quality and team productivity
Continuous IntegrationContinuous Delivery (CI/CD)RedesigningKotlinAndroid performance optimizationModular architecture+4

Senior Android Engineer

Jul 2023Present · 2 yrs 11 mos

Bls solutions

Senior Mobile Engineer (Flutter / Android)

Nov 2020Jun 2023 · 2 yrs 7 mos · On-site

  • Delivered 7+ Android apps using Kotlin + Clean Architecture → enabled scalable and maintainable product growth
  • Optimized async workflows (Coroutines, Flow) → improved crash-free sessions by ~40%
  • Implemented real-time features (WebSockets, push notifications) → enhanced user engagement and responsiveness
  • Reduced maintenance overhead using modular architecture → cut development effort by ~30%
  • Collaborated with cross-functional teams → faster delivery in agile product cycles
Firebase Cloud MessagingTechnical DesignKotlinClean ArchitectureCoroutinesFlow+2

Vantage-soft

Android Developer (Kotlin / Java)

Aug 2020Oct 2020 · 2 mos · On-site

  • Built Android features using Kotlin/Java + MVVM → improved code maintainability and structure
  • Integrated REST APIs (Retrofit) → enabled reliable backend communication
  • Optimized UI performance and load times → improved responsiveness and user experience
  • Refactored legacy code → enhanced code quality and reusability
KotlinJavaREST APIsRetrofitUI performance optimization

Education

Capital University of Science & Technology

Bachelor's degree — Computer Science

Jan 2016Jan 2020

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