Md Moontasirul Islam
Hi, I’m Md Moontasirul Islam, a Senior Android Engineer with 10+ years of hands-on experience delivering secure, scalable mobile solutions for fintech and consumer apps.
About
Hi, I’m Md Moontasirul Islam, a Senior Android Engineer with 10+ years of hands-on experience delivering secure, scalable mobile solutions for fintech and consumer apps. I specialize in Kotlin, modern Android architectures (MVVM, Jetpack Compose), mobile security, CI/CD automation, release engineering, and cross-functional technical leadership. I’m passionate about building high-performance apps, reducing technical debt, and mentoring mobile teams to ship reliable features quickly.
In my work, I collaborate closely with product, UX, and backend teams to design resilient APIs, optimize user experience, and drive data-driven improvements. I value clean code, proactive QA, and secure coding practices that protect users and business interests.
- 10 years' experience
- Joined December 2025
Industry experience
- Software & Internet
- Financial Services
- Professional Services
- Media & Entertainment
- Other
Work experience· 5 roles
Led Android development for multi-country app deployments using a unified Kotlin codebase, accelerating release cycles and reducing regional maintenance overhead. Architected and improved mobile infrastructure (modularization, scalable data layers, optimized build pipelines). Strengthened fintech-grade security by implementing Play Integrity API, root/jailbreak detection, anti-debugging, and secure coding practices — reducing vulnerability reports by 40%. Collaborated with backend teams to design high-performing REST APIs, improving request efficiency and reducing app/server communication failures. Reduced backlog bugs from 300+ to <100 by leading structured triaging, crash analytics reviews, and automated regression verification.
Led an international team to deliver secure and scalable global remittance and payments apps across multiple regions. Designed and built a cross-platform Kotlin/Flutter architecture, reducing development and maintenance costs by ~30%. Enforced secure coding standards and compliance frameworks, improving app reliability and reducing fintech audit issues. Implemented CI/CD pipelines and automated release workflows, shortening QA-to-release cycles by 50%. Partnered with backend teams to design REST APIs focused on performance, resiliency, and ease of integration for mobile clients. Boosted user engagement by collaborating with Product/UX to refine flows using analytics-driven insights.
Developed Android apps for smartphones and smartwatches using Kotlin, Java, MVVM/MVP, and RESTful APIs (Google Fit, Fitbit, Firebase). Built scalable core architecture and reusable components for cross-device and multi-platform compatibility. Improved performance through memory analysis, screen fragmentation support, and end-to-end optimization. Collaborated with UI/UX and QA teams to deliver user-friendly, high-quality apps across Android and iOS platforms. Recognized as Best Developer and Best Team Player for outstanding contributions.
Education
Certifications and awards
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