Summary
Overview
Work History
Education
Skills
Websites
References
Timeline
Generic

Amoah Alexander

Kumasi

Summary

Lead Mobile & Full-Stack Engineer with expertise in developing high-performance applications and backend solutions using Flutter and Dart. Strong background in integrating advanced features such as KYC verification and payment systems, effectively enhancing user experiences across multiple platforms.

Overview

3
3
years of professional experience

Work History

Senior Mobile Engineer

Phundit
Accra
08.2024 - Current
  • Scaled mobile app to 1.3K+ active users by developing core product features and backend infrastructure.
  • Built auto-deposit system with scheduling, OTP verification, lifecycle monitoring, and mobile money wallet integration.
  • Implemented Recurring Payment Plan (RPP) webhook infrastructure with idempotent processing and status management.
  • Integrated brokerage APIs for deposits, withdrawals, portfolio balance tracking, and investment management.
  • Developed reward redemption system enabling users to access airtime, data bundles, ECG/GWC payments, and TV subscriptions.
  • Built KYC verification pipeline including Ghana Card verification, document uploads, and status monitoring.
  • Full-stack development across the mobile application and serverless backend powering a production fintech platform integrated with brokerage and payment provider APIs.
  • Tech Stack: Flutter, Dart, TypeScript, Firebase Cloud Functions, Firestore, Firebase Auth, Firebase Storage, Firebase Messaging, BLoC/HydratedBloc, Freezed, RxDart, fpdart, Sentry, BigQuery, Vitest.

Lead Mobile Engineer

Bubbles
New York
11.2025 - 02.2026
  • Developed an entire customer app with clean architecture, repository pattern, and DI for authentication, orders, location, notifications, and profiles.
  • Developed customer mobile app and contributed to merchant tablet app for seamless two-app Flutter system.
  • Integrated Google Maps for real-time tracking, enhancing merchant search and address autocomplete functionalities.
  • Implemented push notifications with timezone-aware scheduling, improving user engagement through effective runtime permission handling.
  • Added multi-language support (English/French) and optimized performance with caching, pagination, and HydratedBloc state persistence.
  • Tech Stack: Flutter, Dart, BLoC/HydratedBloc, RxDart, DIO, FPDart, Google Maps, Firebase Cloud Messaging, REST APIs.

Junior Mobile Engineer

Accede
Accra
09.2024 - 11.2025
  • Executed Flutter mobile UI implementation, transforming design mockups into responsive, user-friendly interfaces.
  • Collaborated with senior engineers to enhance API modules for Customers, Shipments, and Notifications, improving data flow and user experience.
  • Defined and consumed API contracts between backend services and Flutter clients, ensuring reliable communication and integration.
  • Acquired practical experience in a Swagger-documented API environment, focusing on RESTful design best practices.

Frontend Mobile Engineer

Sibyl Systems
Akosombo
03.2023 - 07.2023
  • Contributed to development of three Flutter applications (customer mobile app, admin mobile app, desktop admin dashboard) to streamline internal operations and enhance user management.
  • Built UI screens for all three applications from Figma designs, ensuring responsive layouts across mobile and desktop form factors.
  • Implemented parts of the DCSA business logic and integrated frontend flows with backend services.
  • Created reusable Flutter widgets and ensured consistent UI components across product suite to improve user experience.

Education

Bachelor of Science - Information and Communication Technology

Akenten Appiah-Menka University Of Skills Training And Entrepreneurial Development
Kumasi,Ghana
01-2024

High school or equivalent -

Acherensua Senior High School
Acherensua,Ghana
01-2017

Skills

  • Flutter
  • Dart
  • Kotlin
  • JavaScript
  • TypeScript
  • Nextjs
  • Express
  • MongoDB
  • MySQL
  • PostgreSQL
  • GitHub
  • JIRA

References

  • Benedict AmpofoAdu, Co-founder of Sibyl Systems & Phundit, adubenedict10@gmail.com
  • Boris Thiam, Founder Of Bubbles Software Technologies, boristhiam@gmail.com
  • Felix Asamoah, Senior Cross-Platform Engineer

Timeline

Lead Mobile Engineer

Bubbles
11.2025 - 02.2026

Junior Mobile Engineer

Accede
09.2024 - 11.2025

Senior Mobile Engineer

Phundit
08.2024 - Current

Frontend Mobile Engineer

Sibyl Systems
03.2023 - 07.2023

Bachelor of Science - Information and Communication Technology

Akenten Appiah-Menka University Of Skills Training And Entrepreneurial Development

High school or equivalent -

Acherensua Senior High School
Amoah Alexander