03Mobile systems — high scale
High-scale mobile platform.
A high-scale Flutter product serving 400,000+ users, built for reliability across complex production workflows.
Role
Lead Flutter Developer
Period
2024 — present
Status
In production
03.1
Scale without disclosure
This is an intentionally anonymized production mobile platform serving 400,000+ users. The public case focuses on Isfan's engineering responsibility and outcomes rather than the client, organization, or product domain.
03.2
Observability
He implemented the analytics and observability layer so the team can work from real usage and crash data across a large active fleet instead of guessing.
03.3
Architecture that stays changeable
Feature-first clean architecture keeps product flows isolated, with BLoC/Cubit for state and Retrofit + Dio at the network boundary. New work can land without spreading risk across unrelated modules.
Fig.
The system, drawn
+
Stack
FlutterBLoC / CubitRetrofit + DioFirebaseSentry
Want the unabridged version — ask the agent or ask Isfan.