Abdullah Zowad Khan

Senior Android Engineer · 8+ years · Apps at 10M–100M+ users

Strong focus on performance, stability, and modern Android architecture (Kotlin, Compose, Coroutines/Flow), with additional experience across backend and embedded systems. Works with an agentic AI workflow backed by human review gates.

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Abdullah Zowad Khan
Contact
Email
khanabdullahzowad@gmail.com
LinkedIn
linkedin.com/in/abdullah-zowad-khan
GitHub
github.com/AZKZero
Stack Overflow
stackoverflow.com/users/8190327/abdullah-z-khan
Location
Dhaka, Bangladesh (remote)
Writing
All writing →
My Claude Code dashboard, in one line
November 2026 · Model, git state, context, cost and quota in one Powerlevel10k-style line
Ten months of Android, two of them with an agent
November 2026 · ≈4× PRs/month, −63% review comments, and the risk of knowledge stagnation
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 for rapid hotfixes
  • Delivered re-engagement features for a 100M+ user base, including a Quran login-nudge flow, iterating quickly on rule changes from QA and product
  • Migrated feature modules to Design System v2 in a codebase moving to Kotlin Multiplatform, shipped as stacked PRs with checks against Figma and the legacy screens in every theme; implemented app-wide Edge-to-Edge support
  • Proposed and prototyped QA tooling: a deeplink test harness with CI, and a pre-release Android/iOS parity check
  • Run an agentic AI workflow (Claude Code) end to end: ticket → investigation → implementation → emulator verification → PR → review, connected to Jira, Figma, Slack and GitHub
  • Built guardrails so speed doesn't cost accuracy: human approval for every outward action, a hook that blocks unlabelled AI-posted comments, and a reusable close-out checklist for branch, build and ticket rules
  • Keep persistent project memory of conventions, decisions and per-ticket logs, so context carries across sessions instead of being re-explained
  • Reviewed teammates' PRs with every finding checked against the code and the ticket before posting
Senior Software Engineer I to II - Brain Station 23
2023-2026, Dhaka
  • Led a 4-developer squad delivering features for large-scale TelCo apps, mentoring them in advanced debugging and production issue resolution
  • Delivered Widevine DRM integration for OTT services (Toffee)
  • Led migration from XML to Jetpack Compose in a large legacy codebase, ensuring stability and backward compatibility while reducing technical debt and aligning the team on modern Android standards
  • Built team tooling: a custom Android Studio plugin generating Repository layers and folder structure, and a Zsh script linking the Jira REST API with Git commit prefixes to auto-generate release documentation (~20% less manual overhead)
  • Resolved critical dependency and artifact issues (JCenter deprecation, Play Store requirements)
  • Used LLMs (ChatGPT) since 2023 for problem-solving and code drafts, reviewing and adapting every suggestion
Lead Software Developer - Red.Digital
2022-2023, Dhaka
  • Led a 3-developer team delivering features for high-scale TelCo apps
  • Diagnosed and resolved critical third-party SDK integration issues to stabilize production releases
  • Maintained crash-free rates above 98.5% through proactive monitoring and fixes
Android Developer - Technext
2021-2022, Dhaka
  • Developed features for a WireGuard-based VPN system, including Android client and backend services
  • Contributed to backend systems using NestJS (API layer) and Flask (VPN server orchestration)
  • Designed a multi-marker routing system on Google Maps with nested paths and editable UI representations
  • Built a custom spreadsheet-like editable grid for handling large, dynamic datasets
Software Developer - Admission Assistant
2018-2021, Dhaka
  • Built the Android application from scratch, scaling to 100K+ users
  • Owned end-to-end development: architecture, features, and production deployment
  • Developed backend services (Node.js) to support mobile features and APIs
  • Worked in a fast-moving startup with evolving product requirements and no pre-defined architecture
Junior Embedded Systems Engineer - Rumy Technologies
2017-2019, Chittagong
  • Developed Android applications for geolocation-based attendance systems
  • Implemented embedded components for biometric devices using ESP-based hardware
  • Built a C++ driver/plugin for SM25 sensor integration with NodeMCU systems
Skills
Education & Languages