Hi there, I'm Mahfuz! 👋

I am a Full-Stack Developer with a deep-rooted foundation in mobile engineering and a specialized focus on building high-concurrency Java Spring Boot backend systems. My transition from mobile to the backend allows me to architect end-to-end solutions with a focus on clean architecture, performance, and seamless integration.

🚀 Professional Focus: Backend & Fintech Engineering Currently, I am engineering robust, scalable services at Technonext, focusing on financial ecosystems and event-driven architectures.

Wallet & Payment Systems: Engineered high-concurrency digital wallets managing real-time balances, trip settlements, and automated commission distributions.

MFS Gateway Architect: Integrated bKash, Nagad, and Upay using secure IPN webhooks and agreement-based tokenization for 100% transaction reliability.

Event-Driven Systems: Leveraging Apache Kafka to process real-time point transactions and reward distributions based on live event triggers.

Financial Engines: Developed complex revenue-split logic, multi-tier debt management systems, and OTP-verified disbursement flows.

Gamification & Loyalty: Built scalable Points-Based Tier Systems with dynamic admin-driven reward configurations.

🛠️ Tech Stack Backend & DevOps

Languages: Java, Kotlin

Frameworks: Spring Boot, Spring Security, JPA/Hibernate

Architecture: Microservices, Event-Driven (Kafka), RESTful APIs

Infrastructure: PostgreSQL, Docker, Maven, GitHub Actions (CI/CD)

Mobile Development

Android: Jetpack Compose, MVVM, Coroutines, Hilt, Room, Kotlin

Cross-Platform: Flutter, Dart, BLoC/Cubit, Dio, GetIt

✍️ Content & Community I’m a firm believer in open-source and knowledge sharing.

Open Source: I maintain several projects on GitHub.

Writing: I write technical deep-dives on Medium about backend architecture and mobile dev.

📫 Get in Touch Email: mirmahfuz10@gmail.com

LinkedIn: linkedin.com/in/mir-mahfuz

"Passionate about learning new technologies and building systems that make a direct impact."