Abdullah Zowad Khan

Senior Android Engineer - 8+ years - 10M-100M+ users

Focused on performance, stability, and modern Android architecture (Kotlin, Compose, Coroutines, Flow). Experience across mobile, backend, and embedded systems.

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Contact
Email
khanabdullahzowad@gmail.com
LinkedIn
linkedin.com/in/abdullah-zowad-khan
GitHub
github.com/AZKZero
Key Highlights
Portfolio
Muslim Pro
Contributed production features and stability improvements for a global 100M+ user app.
RYZE Bangladesh
Worked on customer-facing Android experiences for a large-scale digital service app.
MyBL
Delivered TelCo app features and maintained high crash-free performance at scale.
My Robi
Contributed to feature delivery and production quality for a major TelCo application.
My Airtel
Built and maintained Android features for a high-traffic telecom self-care app.
Admission Assistant
Android app built from scratch for admission preparation, serving 100K+ users.
Experience
Software Engineer - Bitsmedia
2026-Present, Singapore, Remote
- Increased ANR-free rate from 97% to 98% and crash-free rate from 98% to 99%
- Resolved critical production crashes within 24 hours
- Delivered re-engagement features for 100M+ users
- Implemented app-wide Edge-to-Edge UI support
Senior Software Engineer I to II - Brain Station 23
2023-2026, Dhaka
- Led a 4-developer squad delivering large-scale TelCo applications
- Delivered Widevine DRM integration (Toffee OTT)
- Led XML to Jetpack Compose migration in a large legacy codebase
- Contributed to reducing technical debt and aligning coding standards
- Built Android Studio plugin for repository generation and structure enforcement
- Developed Jira + Git automation reducing manual overhead (~20%)
- Mentored engineers in debugging and production issue resolution
- Sustained 98.5%+ crash-free rate across releases
Lead Software Developer - Red.Digital
2022-2023, Dhaka
- Led a 3-developer team for high-scale TelCo apps
- Resolved critical third-party SDK issues
- Maintained 98.5%+ crash-free rate
Android Developer - Technext
2021-2022, Dhaka
- Built features for a WireGuard-based VPN system (Android + backend)
- Worked with NestJS (API) and Flask (VPN orchestration)
- Designed multi-marker routing system on Google Maps
- Built spreadsheet-like editable UI for large datasets
Software Developer - Admission Assistant
2018-2021, Dhaka
- Built Android app from scratch (100K+ users)
- Owned architecture, development, and deployment
- Developed backend services using Node.js
- Worked in a fast-moving startup with evolving requirements
Junior Embedded Systems Engineer - Rumy Technologies
2017-2019, Chittagong
- Built Android apps for geolocation-based attendance systems
- Developed embedded solutions using ESP hardware
- Implemented C++ driver for SM25 sensor with NodeMCU
Skills