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Davies Kwarteng

@davieskwarteng

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Senior mobile engineer at ABOUT YOU who built an automated device farm benchmarking app performance across 10+ devices.

Germany

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At ABOUT YOU, I designed and orchestrated an in-house device-farm platform that tests mobile app performance on every test release. It runs across 10+ concurrent physical devices and surfaces frame drops, memory use, and CPU use so regressions can be caught before rollout.

Across mobile and frontend products in fashion, renewable energy, EV charging, marketplaces, and payments, I’ve worked with Flutter, Dart, and web technologies. I also contribute to open-source packages and build AI products, including a local-first transcription and virality-scoring pipeline and a crypto-wallet risk-screening app.

Experience

Work history, roles, and key accomplishments

Senior Mobile Engineer

AboutYou GmbH

Aug 2025 - Sep 2026 (1 year 1 month)

Designed and orchestrated an in-house mobile device-farm testing platform, comparable to Firebase Test Lab, that automatically tests app performance on every test release before full rollout. Ran automated performance runs across 10+ concurrent physical devices, measuring frame drops, memory usage, and CPU usage per build.

Flutter Dart Mobile Performance Device Farm Automation Firebase Test Lab CI CD Performance Profiling

Senior Frontend Engineer → Team Lead

Qcells

Jul 2024 - Aug 2025 (1 year 1 month)

Led the architecture, development, and delivery of CRM and all company-wide frontend applications. Built and maintained applications for B2C energy retail consumers using Flutter and TypeScript/Next.js, and implemented a single sign-on solution across all applications using Microsoft Entra ID.

Flutter Dart TypeScript Next.js Microsoft Entra ID CI CD UI Libraries Accessibility App Store Management Mentorship

Snr. Flutter Engineer

Monta GmbH

Jul 2022 - Jul 2024 (2 years)

Actively wrote Dart and Flutter code, contributed to the UI library of widgets, and led teams on various feature developments as a feature champion. Collaborated with designers and PMs on feature requirements, translated UI/UX designs into code, and conducted QA testing.

Flutter Dart MVVM MVC Test Driven Development Unit Testing UI UX Code Review Lokalise Agile

Lead Mobile Engineer (Part-Time)

Build-Yours.De

Jul 2022 - Jun 2024 (1 year 11 months)

Spearheaded the development of the mobile application using Flutter and Dart, enabling seamless user interaction with DIY craft kits. Architected and implemented Bluetooth Low Energy (BLE) connectivity and integrated MQTT protocol for efficient data exchange.

Flutter Dart BLE MQTT MVVM Test Driven Development Unit Testing Knowledge Sharing

Snr Flutter Engineer Consultant

Oya

Oct 2021 - Jun 2022 (8 months)

Actively wrote Dart and Flutter code, took part in technical decisions, and collaborated with designers and PMs on feature requirements. Managed junior Flutter developers, monitored and resolved bugs, and managed release of new app versions to app stores.

Flutter Dart Technical Leadership Bug fixing App Release Management

Snr. Flutter Engineer

Plendify B2B MarketPlace

Jul 2021 - Jun 2022 (11 months)

Engineered and maintained major features of the B2B marketplace mobile application, translating UI/UX designs into code. Automated widget testing, utilized architectural design patterns, and mentored intern and junior engineers.

Flutter Dart MVC MVVM Test Driven Development Unit Testing Widget Testing Code Review Mentorship

Flutter Engineer

Cedipay Ghana Limited

Jan 2019 - Sep 2021 (2 years 8 months)

Developed secure payment solutions, integrated payment gateways, and ensured compliance with payment processing standards. Collaborated with designers, product managers, and engineers to define and implement new features, and led feature development projects from concept to completion.

Flutter Dart Payment Gateways Security Encryption Compliance UI UX Leadership

Frontend Engineer

Accolm Limited

Apr 2018 - Apr 2020 (2 years)

Implemented and maintained user interfaces using Angular and Vue.js for a Business Activity Monitoring (BAM) system for DHL. Created dynamic data visualizations, integrated RESTful APIs with Java Spring Boot, and managed MySQL databases.

Angular Vue.Js Spring Boot MySQL REST APIs Data Visualization Code Review Bug fixing

Education

Degrees, certifications, and relevant coursework

Kwame Nkrumah University of Science and Technology

Bachelor of Science, Aerospace Engineering

2014 - 2018

Pursued a Bachelor of Science in Aerospace Engineering, building a foundation in engineering principles before transitioning into software engineering.