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Hi, I'm Bilel Salem

Building enterprise-scale applications that power education, commerce, and legal systems globally with Islamic compliance at their core.

Next.js · React · Django · NestJS · Node.js · PostgreSQL · TypeScript · React Native

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Real Production Projects

Not mockups. Not templates. Real applications serving real users.

Wisecool

Tunisia's #1 Educational Platform — 12 Microservices Architecture

The Problem

Tunisian students across all levels — from elementary to university preparatory classes (IPEIEM, EPT, ENIT, Sup'Com) — needed an enterprise-grade digital learning platform. Requirements included: programming course support with live code editors, real-time collaboration, Arabic RTL support, Tunisian curriculum paths, mobile-first design, offline capabilities, video conferencing, enterprise messaging, comprehensive SEO for student acquisition, and production-level security with zero vulnerabilities.

My Solution

Architected Beit Al Hikma (بيت الحكمة), a 12-microservice ecosystem: wisecool-app (Next.js 16 with 8 Monaco code editors), wisecool-api (Django 5.2 with 40+ apps), wisecool-messaging (Django Channels + WebSocket), wisecool-mobile (React Native), wisecool-desktop (Electron), wisecool-instructor, wisecool-admin, wisecool-library, wisecool-internship, wisecool-editions-api, wisecool-landing (10K+ SEO keywords), wisecool-status. Covers the full Tunisian educational path from elementary through preparatory classes, medical school, and university.

Technologies I Used

Next.js 16React 19Django 5.2Django ChannelsPostgreSQLRedisReact NativeElectronTypeScriptMonaco EditorLiveKitWebSocket

Results & Impact

8.1K+

Active Users

Monthly active learners

Microservices

Independent scalable services

4.9/5

Rating

Across 2,800+ student reviews

Code Editors

Monaco-based programming environments

10,000+

SEO Keywords

Complete educational market coverage

12K+

Followers

Across all social platforms

Technical Challenges I Solved

•Implemented 8 Monaco-based code editors: Python/JS practice editor, SQL query builder with syntax highlighting, terminal emulator, interactive playground, competitive programming arena, experiment lab, Jupyter-style notebooks, all with real-time execution and auto-completion

•Built enterprise WebSocket messaging: Django Channels with Redis pub/sub, auto-reconnection with exponential backoff, offline queue, typing indicators, presence tracking, read receipts, reactions, attachments, voice messages, polls, Q&A, scheduled messages, content moderation

•Achieved 10,000+ SEO keywords: Covered 115 educational paths, 500+ variations (AR/FR/EN), year-specific (2024-2026), misspelling handling, results/corrections/dates pages, comparison keywords - all indexed by Google

•Production security with zero vulnerabilities: JWT auth (15min expiration), RBAC, rate limiting (5 login/15min, 100 API/min), SQL+XSS prevention, CORS restrictions, CSP headers, HTTPS-only, no secrets in frontend

What I Built

•Architected complete 12-microservice ecosystem from scratch - designed service boundaries, REST/WebSocket/Redis pub-sub communication, 40+ Django app data models, deployment strategy

•Implemented 8 specialized Monaco code editors - custom language support, syntax highlighting, auto-completion, execution engines, SQL builders, terminal emulation, competitive arenas, Jupyter notebooks

•Developed enterprise messaging system - Django Channels WebSocket infrastructure, Redis channel layer, auto-reconnection, 25+ features (typing, presence, reactions, attachments, polls, Q&A, scheduling, moderation)

Architecture I Designed

-12 Microservices: wisecool-app (Next.js 16), wisecool-api (Django 5.2 + 40 apps), wisecool-messaging (Django Channels), wisecool-mobile (React Native), wisecool-desktop (Electron), wisecool-instructor, wisecool-admin, wisecool-library, wisecool-internship, wisecool-editions-api, wisecool-landing, wisecool-status

-Frontend: Next.js 16 App Router, React 19 Server Components, TypeScript 5, Tailwind CSS 4, Framer Motion, TanStack Query v5, Redux Toolkit, next-intl (i18n), Monaco Editor, React Hook Form + Zod

-Backend: Django 5.2 REST Framework, Django Channels (WebSocket), PostgreSQL 16, Redis (cache + pub/sub), Daphne ASGI, JWT auth, Celery async tasks, comprehensive DB indexes

-8 Code Editors: Monaco core with PracticeCodeEditor (Python/JS), PracticeSQLEditor, ArenaEditor (competitive), LabEditor, NotebookEditor (Jupyter), PlaygroundEditor, SQLPlaygroundEditor, TerminalEditor

-Messaging: Django Channels WebSocket consumers, Redis channel layer, JWT WS middleware, auto-reconnection, message queue, typing/presence/reactions, files/voice/polls/Q&A, content moderation

-Real-time: LiveKit video/audio, WebSocket messaging, Server-Sent Events, React Query optimistic updates, IndexedDB offline storage, background draft sync

-Security: Zero vulnerabilities, JWT (15min/7d), RBAC, rate limiting (5/15min login, 100/min API), SQL+XSS sanitization, CORS, HTTPS-only, CSP headers, encrypted at rest

microservices

8.1K+

users

4.9/5

rating

10K+

keywords

Each project represents months of work, solving real problems for real businesses.

Let's Build Your Next Project

Let's Work Together

Ready to build something amazing? I'm available for premium projects.

Email

contact@bilelsalem.me

Location

Tunisia

What I Build

•Full Stack Web Applications

•Mobile Apps (iOS & Android)

•Microservices Architecture

•Islamic-Compliant Solutions

•E2E Encryption & Security