M. A. Sayem

Mobile Team Lead

M2SYS Technology, Dhaka

• Leading integration efforts with platforms like Make.com, developing .NET connectors and APIs.
• Assisting with junior DevOps tasks to deliver critical backend features.
• Overseeing international team recruitment in Turkey, enhancing interview skills and cross-cultural understanding.

Team Lead - Android

M2SYS Technology, Dhaka

• Led the adoption of Google M3 design, migration to Jetpack Compose, and Dagger to Hilt.
• Implemented a modular architecture with CI/CD using Fastlane and GitLab pipelines.
• Managed international teams, requirement analysis, and planning for app development.
• Deepened understanding of the entire product backbone, improving app architecture and design.

Sr. Android Developer

M2SYS Technology, Dhaka

• Mentored junior developers, initiating a journey of leadership and team guidance.
• Introduced a business domain layer to the MVVM architecture to manage growing product complexity.
• Led the development of the CloudApper no-code platform using a modern tech stack (Kotlin, Coroutines, Dagger, Room).
• Evolved the CircleCare app with corporate wellness features and migrated legacy Java code to Kotlin.

Software Engineer - Android

M2SYS Technology, Dhaka

• Developed the "CircleCare" application from scratch using Java, Volley, and custom views.
• Implemented core features including health tracking modules and secure social circles using AES/RSA encryption.
• Created custom network managers and utilized RecyclerView for smooth, dynamic list layouts.

Programmer - Android

BJIT Limited, Dhaka

• Maintained and fixed bugs for SourceNext products like "Super Battery" and "Super Speed".
• Honed fundamental Android and debugging skills, contributing to a 60% reduction in reported issues.

System Integration & Team Growth

Focused on system integration, creating custom CloudApper apps in Make.com and exploring other automation platforms. Assisted with junior DevOps tasks and helped deliver critical backend features. Honed interviewing skills by recruiting for our international team in Turkey.

Backend & API Development

Shifted focus to the integration side of CloudApper, developing several connectors using C# and .NET. Wrote, optimized, and released backend APIs to support new functionalities.

UI/UX Modernization & Architectural Refinement

Led the adoption of Google's Material 3 design guidelines and migrated legacy XML layouts to Jetpack Compose. Upgraded dependency injection from Dagger to Hilt. Enhanced cross-team communication, especially with the backend team, to better architect the app and understand the entire product backbone.

Modular Architecture & Continuous Delivery

Architected and led the transition to a fully modularized app structure for the flagship product, significantly reducing build times. Focused on Continuous Delivery, using Fastlane and GitLab pipelines to release modules as independent libraries.

International Team Collaboration

Focused on requirement analysis, planning, and active development while working closely with an international team situated in Turkey, navigating cross-cultural communication and workflows.

Mentorship & Advanced Architecture

Began my journey into mentorship and leadership by guiding junior developers. Focused on clean architecture and code, introducing a business domain layer to our MVVM structure to handle growing product complexity. Implemented an OAuth 2.0 login system for CloudApper.

Building a No-Code Platform

Started work on the new "CloudApper" no-code platform. Established a strong architectural foundation using a modern tech stack: Kotlin, Coroutines, MVVM, Retrofit, Room, and Dagger for dependency injection.

Evolving CircleCare for Corporate Wellness

Continued development on CircleCare, shifting focus to corporate wellness. Developed modules for company-wide competitions, a rewards system, and an admin dashboard for monitoring employee wellness data. Continuously updated the project architecture and migrated significant portions of the codebase from Java to Kotlin.

Foundational App Development

Developed the "CircleCare" app from scratch. Utilized Volley for networking (later Glide for images), created custom views with overridden touch events, and built a custom network manager. Implemented health modules and a private social circle with AES/RSA encryption for security. Primarily worked in Java with AsyncTask for threading.

Entry into Android Development

Completed Android training at BJIT Ltd, finishing in the top 3. Worked on maintaining and debugging existing SourceNext products ("Super Battery", "Super Speed"), learning to fix issues effectively and reducing bug generation by nearly 60%.