El-hadj H.

Compétences

• Kotlin5/5
• Java5/5
• WebSocket4/5
• gRPC3/5
• MongoDB4/5
• Redis4/5
• GCP5/5
• Terraform3/5
• Docker4/5
• Jetpack Compose5/5
• Git4/5
• Agile3/5
• Android5/5
• REST API3/5
• Firebase3/5
• Go4/5
• Python4/5

Expériences

1. Software Engineer

   Feb 2024 — Present

   • Architected and built XChat, Yassir's real-time messaging platform serving rides, food-delivery, and other verticals—Go REST API (Fiber) + Elixir/Phoenix WebSocket layer handling 100K+ concurrent connections per node. • Designed an event-driven pipeline (GCP Pub/Sub, Broadway) with async workers for message persistence, FCM push notifications, and cache warming; implemented CDC via MongoDB Change • Streams to auto-manage service rooms across ride/order lifecycles. • Applied hexagonal architecture (ports & adapters) across Go and Elixir codebases; integrated Firestore, Redis, LiveKit (WebRTC voice/video), and Terraform/Terragrunt IaC across multi-environment GCP infrastructure. • Contributed to native Android development in Java/Kotlin, leveraging Jetpack Compose, Dagger Hilt, and modern architecture patterns for the Yassir super-app.

   • WebSocket
   • Redis
   • Terraform
   • Java
   • Kotlin
   • Jetpack Compose
   • REST API
   • MongoDB
   • Android
   • GCP

2. Senior Android Developer

   2023 — Feb 2024

   • Led Android development using Java/Kotlin with Jetpack, ensuring seamless API integration, security, and performance across the application. • Collaborated within cross-functional teams, translating business needs into high-quality, production-ready features.

   • Java
   • Kotlin
   • Jetpack Compose
   • Android

3. Android Developer

   Sep 2023 — Present

   Built the Android app for ultrasound-based clinical assessment (20+ scan types) using Jetpack Compose, SqlDelight, Retrofit, and Dagger Hilt; integrated an ML model for real-time image segmentation.

   • Jetpack Compose
   • Android
   • WebSocket

4. Teaching Assistant

   Sep 2019 — Jun 2023

   Taught Classical Mechanics, Electricity, Vibration & Mechanical Waves, and Optics.