https://mahsin-islam.github.io/blog Deep dives on Flutter, FastAPI, FinTech, AI/ML, and software engineering from a banking-sector engineer and published researcher. en-us https://mahsin-islam.github.io/blog/flutter-performance-optimization flutter-performance-optimization Mon, 15 Jun 2026 00:00:00 +0600 Flutter Most Flutter optimization guides recycle the same 3 tips. Here are the ones I use in production. https://mahsin-islam.github.io/blog/fastapi-backend-lessons fastapi-backend-lessons Wed, 20 May 2026 00:00:00 +0600 Backend Dependency injection, async database sessions, background tasks with Celery, and the mistakes I made structuring a real FastAPI project. https://mahsin-islam.github.io/blog/bangladesh-fintech-landscape-2026 bangladesh-fintech-landscape-2026 Fri, 10 Apr 2026 00:00:00 +0600 FinTech Working inside a bank's ICT division gives a different perspective on FinTech than reading TechCrunch.