Cortance

Flutter Developer

Azim S

Information

Available hours \ week
<20 h/w
Seniority level
Senior
Years of experience
4.5 yrs.
Location
Kazakhstan
Timezone
(GMT+05:00) Tashkent

Languages

Russian
Fluent (C2)
Kazakh
Fluent (C2)
English
Fluent (C2)

About

Azim is a proficient Flutter Developer with 4.5 years of experience specializing in mobile application development. His expertise in Flutter and Dart, coupled with extensive knowledge of the Flutter BLoC and Provider architectures, enable him to build scalable and efficient applications. He has a strong foundation in unit testing and performance testing, ensuring high-quality outputs and user satisfaction. In addition to his core competencies, Azim has hands-on experience with various libraries and tools such as Firebase for database management and REST API integration. He is familiar with CI/CD processes using Bitbucket and Fastlane, enhancing productivity through automation. His work typically spans industries like fintech, telecommunications, and e-commerce, where he has addressed challenges related to scalability, payment integrations, and user analytics, etc. He holds a degree in Computer Science from Nazarbayev University.

Main technologies

Additional skills

Experience

Boss Revolution - International Calling & Top-Up App

Software Engineer (Mobile / Flutter)

About the Project

A large-scale consumer fintech & telecom mobile application with 5M+ users, providing international VoIP calling, messaging, mobile top-ups, and wallet-based payments. The app focuses on high reliability, analytics-driven growth, and monetization optimization.

  • Fintech
  • Telecommunications

Responsibilities

- Developed and optimized VoIP calling and messaging features - Implemented analytics event tracking (Amplitude, Firebase Analytics) - Designed and integrated a composite logging framework for unified event/error reporting - Redesigned funding & payment flows to reduce friction - Implemented A/B testing experiments for payment and funding flows - Integrated in-app Wallet as a new payment instrument - Debugged production issues using profiling and crash reporting tools

Skills & technologies

VIP Ticketing Apps for Borussia Dortmund & VfL Wolfsburg

Lead Flutter Developer

About the Project

Exclusive multi-platform ticketing applications for VIP football club members, delivering digital tickets, secure access, and offline-first functionality. Used by thousands of high-profile users with strict reliability and UX requirements.

  • Sports
  • Entertainment
  • Event Management

Responsibilities

- Led end-to-end development of multiple production apps - Designed architecture using Flutter 3, BLoC (hydrated), modular monorepo - Implemented offline-first experience using Hive & reactive observers - Applied Clean Architecture and SOLID principles - Built CI/CD pipelines with Fastlane & Bitbucket Pipelines - Managed and mentored a team of 4+ engineers - Established code quality gates, lint rules, and PR processes - Led Agile ceremonies (planning, reviews, retrospectives)

Skills & technologies

Domestic Manufacturers Marketplace Platform

Senior Flutter Developer

About the Project

A cross-platform marketplace application connecting local manufacturers and merchants, enabling product discovery, secure payments, and partner onboarding. Successfully onboarded 20+ business partners.

  • E-commerce
  • Fintech

Responsibilities

- Architected the app using Flutter, Dio, GetIt - Built a scalable, feature-first modular structure - Integrated Stripe SDK for secure, tokenized payments - Implemented robust API layer with interceptors & token refresh - Improved app performance by ~25% via caching & lazy loading - Automated App Store & Play Store releases using Fastlane - Participated in product and business decision-making

Skills & technologies

Education

Nazarbayev University

2019 - 2023
Computer Science