Hi, I'm Faycal Rafa

Fullstack Engineer

6+ Years Experience

Fullstack Engineer with 6+ years shipping high-scale distributed systems and native mobile apps (former Senior Software Engineer and Technical Lead across fintech, automotive SaaS, and consumer platforms). Focused on building robust backend microservices, resilient mobile apps, and high-performance web products.

Explore BookReader Flagship Let's Talk on WhatsApp

Teams I've Built & Collaborated With

Companies, Startups & Platforms

From national fintech mega-apps and stock brokerages to automotive SaaS and scaling e-commerce platforms.

SABIL

Tap any orbiting company to bring it to center

Explore Detailed Career Journey & Milestones

Featured Project 01 / 05 Scroll down ↓ to snap

Flagship App • Free to Use Android Native

BookReader Pro

On-Device AI Neural Audio & Offline Novel Reader

A private, 100% free offline reader pairing on-device neural TTS with uninterrupted background audio playback and zero cloud dependency.

Role: Solo Creator & Lead Android Engineer. Built Kotlin M3 UI, C++ neural model runtime, and Media3 background service.
Impact: Shipped Kokoro 82M & Piper on-device TTS with zero telemetry, surviving aggressive OS battery killers.

Kotlin Jetpack Compose AndroidX Media3 Kokoro TTS Piper C++ Scoped Storage

Flagship Showcase Download APK (v3.4.0) GitHub Repo

BookReader Pro Android App Screenshot

Featured Project 02 / 05 Scroll down ↓ to snap

Multi-Tenant Platform Shopify for Algeria

StoresDZ

Full-Stack Multi-Tenant E-Commerce Platform

Think Shopify, but open and built for Algeria — powering localized custom storefronts, sales funnels, and cash-on-delivery tracking.

Role: Fullstack Engineer. Connected merchant storefronts to commerce microservices, built reusable themes.
Impact: Delivered multi-tenant architecture supporting 7 distinct industry themes and high-velocity order management.

TypeScript React Go Rust Redis Docker

Read More app.storesdz.com

StoresDZ Multi-Tenant E-Commerce Platform Screenshot

Featured Project 03 / 05 Scroll down ↓ to snap

Autonomous Agent • Open Source Gemma 4 + Floating Companion

TextMorph

System-Wide Autonomous Device Agent & Floating AI Companion

A privacy-first Android assistant featuring an autonomous device agent that executes multi-step OS tasks via Code-as-Action, living floating companion overlays over any app, offline wake-word studio, and on-device Gemma 4 GPU inference.

Role: Solo Creator & Lead Android Engineer. Built multi-engine on-device LLM inference, Ktor CIO localhost server, and non-intrusive AccessibilityService.
Impact: Shipped zero-copy memory-mapped model loading directly from Downloads/ and system-wide in-place text transformations.

Kotlin Jetpack Compose Multi-Engine LLM LiteRT-LM llama.cpp OpenAI API AccessibilityService Ktor

View Showcase Releases & APK GitHub Repo

TextMorph System-Wide Floating AI Agent & Companion

Featured Project 04 / 05 Scroll down ↓ to snap

Fintech & Payments Consumer Mega-App

SABIL Mega-App

Multi-Channel Mobile Banking, QR Payments & Financial Microservices

National financial ecosystem powering instant QR merchant payments, utility bill settlements, and high-frequency digital wallets.

Role: Senior Software Engineer. Architected high-throughput NestJS microservices and PostgreSQL partitioning.
Impact: Engineered resilient workflows with sub-45ms P99 latencies, zero reconciliation loss, and multi-channel settlement.

NestJS TypeScript PostgreSQL Docker Redis Microservices

Read More sabil.dz App

SABIL Mega-App Mobile Application Interface

Featured Project 05 / 05 Scroll down ↓ to snap to Contact

Financial Platform & Brokerage COSOB Accredited

InvestMarket

Outil de gestion de portefeuille et d'analyse de performance boursière

Plateforme financière institutionnelle développée chez Finnetude pour la négociation de titres, la valorisation de portefeuilles en temps réel et l'analyse de performance.

Role: Technical Lead. Co-architected orderbook routing, streaming market feeds, and PostgreSQL models.
Impact: Passerelles WebSockets temps réel, conformité COSOB, Transactional Outbox, et -65 % requêtes base.

NestJS TypeScript WebSockets PostgreSQL Redis Docker

Read More investmarket-dz.com

InvestMarket Stock Trading & Portfolio Management Interface

Open to Opportunities

Get in Touch & Opportunities

Available for Fullstack Engineer, Senior Software Engineer, and Technical Lead positions worldwide. Whether you have an immediate full-time opening, high-impact contract, or greenfield build, reach out directly across any of the channels below.

WhatsApp (+213 540 98 02 38) rafafaycal@gmail.com +213 540 98 02 38 LinkedIn Profile Download CV

GitHub Activity & Contributions

@faycalrafa

1,252 contributions in the past year across open-source & commercial repos

Find me on GitHub @faycalrafa

NovDecJanFebMarAprMayJunJulAugSepOct

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Continuous open-source commits, code reviews & production deployments

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