HELLO, WORLD!

I'm Youness Lagmah.
Mobile & Backend Engineer.

Building fast, reliable mobile apps and scalable backend systems. Specialized in Kotlin, Jetpack Compose, Kotlin Multiplatform (KMP), and robust APIs, with a strong focus on clean architecture and performance.

Explore Featured Projects Let's Build Download CV

github.com/nesyou01 • LinkedIn • Casablanca, Morocco

youness@engine-core:~

$ cat elements.json

"stack": ["Android", "KMP", "iOS"],

"total_downloads": "10M+",

"delivered_products": "40+",

"education": "1337 Coding School (42)",

"status": "ONLINE_READY_TO_DEPLOY"

✓ Daemon active. Ready for new challenges.

EXPERIENCE

6+ Years

Multiplatform & Backend

SHIPPED

40+ Apps

Google Play & Custom

ABOUT

Engineering depth across every layer of the stack.

📱

Mobile Development

Native Android development with Jetpack Compose, shared business logic using Kotlin Multiplatform (KMP) across Android, iOS, and Desktop.

ComposeKMPiOSKotlin

⚡

Backend & APIs

Backend development with Laravel, building scalable REST APIs, database systems, authentication, and reliable services, with additional experience in Firebase, Node.js, and other backend technologies.

LaravelKtorMySQLRedis

🔩

Low-Level

Trained at 1337 Coding School (42 Network), with hands-on experience in C/C++, low-level programming, memory management, data structures, and algorithmic problem-solving.

C/C++FFmpegPOSIX

🚀

DevOps

Build and maintain reliable CI/CD pipelines, automated releases, Docker-based deployments, and scalable hosting to ensure consistent and predictable delivery.

DockerGitHub CILinuxFirebase

PROJECTS

Featured Work

Production apps used by millions of users, built with a strong focus on performance, reliability, scalability, and clean architecture.

LIVE ON GOOGLE PLAY

JPEG Image Compressor & Resizer

Engineered a high-performance image processing, format conversion, and compression app on Google Play. Built with memory-safe background Coroutines, handling bulk high-resolution image processing without OOM crashes on low-end hardware.

Active Installs

1M+

Rating

4.5 ⭐

Crash Rate

<0.1%

Jetpack ComposeCoroutinesMediaStoreFFmpegAdmob

View on Play Store

ANDROID

TTBoost: Get Likes & Followers

A TikTok follower exchange app built with Jetpack Compose. The backend initially used Firebase but was later migrated to Laravel for better database control, more flexible queries, and improved performance. Technologies used include Jetpack Compose, Hilt, SQLDelight, Material 3, Ktor Client, and Laravel.

LaravelRedisFirebaseAndroid

View on Play Store

ANDROID

Video Resizer & Compressor

A powerful Android video editor and compressor built with Jetpack Compose. Uses FFmpeg and Android Media3 for efficient video processing, compression, trimming, and format conversion, with a focus on speed, quality, and a smooth user experience.

AndroidMedia3FFmpeg

View on Play Store

ANDROID, iOS

DONE Super App & Courier Logistics

A complete food and grocery delivery ecosystem designed to streamline the entire delivery process—from customer orders and store operations to driver dispatch and real-time tracking. The platform connects customers, stores, and drivers through live order updates, GPS tracking, WebSockets, and efficient delivery dispatching.

AndroidiOSKMPGoogle MapsMapBox

View on Play Store

ANDROID

World VPN

A full-featured Android VPN app designed to provide users with secure, private, and reliable internet access. Built with OpenVPN and a modern Jetpack Compose UI, with features focused on easy connection management and a smooth user experience. Includes a complete backend and AdMob-powered monetization.

OpenVPNAndroidAdMobNetworking

View on Play Store

STACK & COMPETENCIES

High-performance software across the full stack

📱 Mobile

Jetpack Compose

Kotlin / KMP

Swift

Android SDK

Coroutines/Flow

Hilt / Koin

⚙️ Backend

Laravel / PHP

Ktor

WebSockets

Node.js

REST API Design

GraphQL

🗄️ Data & Systems

MySQL

SQLDelight

Redis

Firebase

C / C++

POSIX Threads

🛠️ DevOps

Docker

GitHub Actions

Linux / Bash

FFmpeg

Fastlane

Nginx / Apache

CAREER TRACK

Experience & Education

2025

Senior Mobile Engineer

·DONE CORP

I played a key role in building and improving a complete food and grocery delivery ecosystem, contributing to the customer app, partner app for real-time store order management, and driver app for delivery operations and tracking.

Full-time · Rabat, MA

2024

Entrepreneur

·UM6P Explorer Program

Spent three months in the program, gaining practical guidance from experienced mentors on business development, product strategy, and turning ideas into viable projects.

Remote · Ben Guerir, MA

2024

Problem-Solving & Low-Level Programming

·1337 Coding School (42 Network)

Studied problem-solving, low-level programming, and C/C++ at 1337 Coding School, developing strong technical skills through hands-on projects and challenging programming problems.

Education · Khouribga, MA

2021

Freelance Mobile & Full-Stack Engineer

·Self-Employed

Delivered 40+ custom mobile and full-stack projects for clients across the US, Europe, and Asia, consistently earning 5.0-star feedback for clean architecture, reliable delivery, and clear communication.

Remote · Worldwide

2020

Web & Backend Foundations

·Self-Taught

Started my development journey by building full-stack web applications, gaining strong experience in relational databases, REST APIs, authentication, and scalable backend architecture.

Self-study

OPEN SOURCE

Open Source & Tooling

View all repositories

📹

KEditor

A Kotlin Multiplatform video editing library powered by FFmpeg and Media3, enabling efficient, hardware-accelerated video processing across Android and iOS.

Kotlin

C/C++

🏗️⭐ 53 stars

LazyStaggeredGrid

A Jetpack Compose library for creating flexible and responsive staggered grid layouts. *(Deprecated)*

Kotlin

🔧

Minishell

A 42 School team project focused on building a Unix-like shell in C, implementing core features such as pipes, redirections, environment variables, process management, and built-in commands.

ENDORSEMENTS

Client Feedback

Consistent 5-star delivery and proactive communication across global engineering teams.

★★★★★

"Seller was proactive with the work, all tasks completed on time. He communicates very well and is adaptive to changes. He is a genius and good coder as well."

Benjgyasi

Verified Client via Fiverr

★★★★★

"The seller has completed the project successfully. He gives good support to fix the issue and bug revision. We are very satisfied with the work, thank you."

Appsuiteco

Enterprise Client via Fiverr

★★★★★

"My dream app came to life, thanks to him being patient with me and developing my dream app within the estimated time. I recommend him to anyone."

Mangkipz

Startup Founder

★★★★★

"Very thankful to Youness who helped me complete my project before the deadline. Very good communication skills. I found a long-lasting relationship."

Rayanbayattra

Mobile Product Lead

Youness Lagmah

Mobile & Backend Engineer

Every great idea starts with a conversation.

Whether you’re launching a mobile app or need expert guidance on Kotlin Multiplatform architecture, I can help turn your ideas into reliable, scalable products.

✉️

uneslagmah@gmail.com

💼

linkedin.com/in/uneslagmah

🐙

GitHub

github.com/nesyou01