Open to opportunities

Phena Mwema

@phenamwema

Message

Senior Android & Flutter developer focused on user-centered mobile solutions.

Kenya

Message

What I'm looking for

I seek mobile engineering roles where I can lead Flutter/Android development, mentor teams, build offline-first apps, and use analytics-driven insights to improve UX and product performance.

I am a Senior Android Developer specializing in Flutter and Firebase, with a strong foundation in Java and mobile architecture. I build user-centered apps that prioritize intuitive UI, performance, and reliability.

At Leja I led development of a Flutter-based app using Firebase Authentication, Firestore, Remote Config, Messaging, Crashlytics, Dynamic Links and Cloud Functions, and I created reusable components that improved efficiency by 50% across projects.

I integrated analytics platforms like Mixpanel, Segment and Firebase Analytics to increase user journey visibility and accelerate bug resolution, and I ran focus-group trainings that cut onboarding support calls by 40%.

I mentor junior developers, streamline bug-reporting and delivery workflows, and apply data-driven decision making to deliver scalable, offline-capable mobile solutions for low-connectivity environments.

Experience

Work history, roles, and key accomplishments

Current

Mobile App Developer

Current

DairyFlow

May 2025 - Present (8 months)

Built a cross-platform Flutter app for small-scale dairy farmers with offline-first sync, real-time Firestore integration, and interactive analytics to improve production tracking and sales visibility.

Flutter Firebase Firestore Hive Provider Offline First UI UX Charts

Current

Senior Android Developer

Current

Leja

Jul 2021 - Present (4 years 6 months)

Developed a Flutter-based mobile app using Firebase suite to improve UX and instrumentation; created reusable components that improved development efficiency by 50% and increased user journey visibility by 90% via analytics integrations.

Flutter Firebase Dart Mixpanel Analytics UI UX Mentoring

Android Developer

Leja

Nov 2019 - Jun 2021 (1 year 7 months)

Integrated RESTful APIs and supported production Android apps, resolving bugs and delivering feature enhancements within agile workflows to improve app stability and scalability.

Java Android SDK RESTful APIs Agile Code Review Scalability Gitlab

Android Developer

TopUp

Oct 2019 - Oct 2019 (0 months)

Designed and developed an offline-first Android app to automate USSD-based Safaricom bundle purchases using the Hover SDK, optimized for low-connectivity and low-resource devices.

Java Android SDK Hover SDK Offline First USSD Automation Performance Optimization XML

Android Developer

AgriFarm

Dec 2018 - Jun 2019 (6 months)

Built an end-to-end Android app for farmers with Firebase backend and Google Maps integration to manage livestock records, enable geolocated listings, and support offline usage for rural users.

Java Firebase Firestore Google Maps Places API MVVM

Software Developer (Attachment)

KEMRI CGHR

Aug 2018 - Nov 2018 (3 months)

Developed and maintained mobile and desktop data-collection tools using ODK and Visual Basic, improving field data capture reliability and deployment of research project software updates.

OpenDataKit Visual Basic C++Data Collection Debugging Deployment