Senior Mobile & Full-Stack Kotlin Architect

Michael Mekonnen

Transforming complex ideas into secure, high-performance applications.

With 7+ years across Android, Kotlin Multiplatform, full-stack Kotlin (Ktor + HTMX), DevOps on AWS & Google Cloud, and crypto-backed systems — building ecosystems that prioritize usability, scalability, and innovation.

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Projects that ship at scale

Architecture-led systems — from VROOM/ORS multi-vehicle routing and offline-first KMP logistics to high-frequency Compose clients and cross-platform products.

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About

With 7+ years of expertise, I am a Senior Mobile & Full-Stack Kotlin Architect transforming complex ideas into secure, high-performance applications — spanning Android, Kotlin Multiplatform, Ktor + HTMX web apps, cloud DevOps, and crypto-backed systems.

What sets me apart: 30+ top-rated projects with a 100% success rate as a Lead Technical Architect; resilient apps serving 1M+ active users; Clean Architecture, MVVM/MVI, Jetpack Compose, and offline-first sync — with end-to-end ownership from system design to CI/CD and cloud operations on AWS and Google Cloud.

I merge technical rigor with business strategy across mobile, full-stack Kotlin websites, fintech, logistics, and crypto — whether launching a lean MVP or scaling an enterprise platform.

Where the work happened

Senior Mobile Engineer — Kasi (kasi.money)

2024 – January 2025 · Remote · South Africa

Fintech platform for underserved communities: encryption and secure API integrations, KYC with Smile Identity, analytics/attribution, and migration to modern Compose, Hilt, and Retrofit stacks — including support for non–Play Store device distribution.

CTO & Senior Android Engineer — Jemla, Inc

2021 – 2025 · Addis Ababa

Led technical strategy and delivery for a B2B e-commerce and logistics platform. Owned mobile, backend, and cloud architecture across AWS, Firebase, and DigitalOcean — including full DevOps ownership for a suite of production apps covering ordering, delivery, registration, and inventory.

Senior Mobile Engineer — Freelance (Upwork)

2021 – Present · Remote

Delivered 30+ production projects with a 100% job success rate across mobile, full-stack Kotlin (Ktor + HTMX) websites and web apps, fintech, logistics, crypto, and enterprise tools — including KMP apps, secure KYC flows, GraphQL APIs, and cloud infrastructure on AWS and Google Cloud.

Senior Android Engineer — Creative Strategy Digital (Insight.hq)

2023 – 2024 · Ireland · Remote

Migrated legacy Android apps to modern architecture, built KMP shared logic, and improved offline sync, analytics, and performance.

Senior Android Engineer — Diploid Tech LLC

2022 – 2023 · US · Remote

Built Android applications serving 1M+ users with BLE, real-time updates, Apollo GraphQL, and location services. Through an agency engagement, led Jetpack Compose UI modernization for Fanatics and GEICO — complex Compose screens, polished animations, and production-ready UI updates at scale.

Android Engineer / Technical Lead — M.A.D Technologies

2019 – 2023 · Addis Ababa

Led mobile delivery across e-commerce, logistics, and media streaming. Migrated legacy codebases and implemented advanced media encryption and secure downloads.

How I build

Android & KMP

Kotlin, Jetpack Compose, Compose Multiplatform, Android SDK, Coroutines, Flow.

Full-Stack Kotlin

Ktor backends, HTMX-driven websites and web apps, server-rendered Kotlin stacks, REST/GraphQL APIs.

Architecture

Clean Architecture, MVVM, MVI, modular multi-app ecosystems, CI/CD pipelines.

DevOps & Cloud

Full infrastructure management on AWS and Google Cloud, DigitalOcean, Docker, Firebase, release pipelines.

Fintech & Crypto

Secure payments, KYC, encryption, crypto project backends, Apollo GraphQL, compliance-minded design.

Media & Hardware

ExoPlayer / Media3, CameraX, BLE, Google Maps, Mapbox, MapKit, offline-first Room/SQLDelight.