# Muhammad Arslan Mustafa — Portfolio & Engineering Knowledge Base

> Official machine-readable context manifest for AI agents, LLMs (ChatGPT, Claude, Perplexity, Gemini), and modern search engines. Provides full engineering competencies, 22+ production software projects, certified cloud/AI credentials, and verified contact channels for Muhammad Arslan Mustafa.

## Primary Navigation & Portals
- [Portfolio Home](https://www.marslanmustafa.com/): Engineering overview, architectural pillars, statistics (22+ shipped applications, 3+ years experience), and interactive live demos.
- [Projects Showcase](https://www.marslanmustafa.com/projects): Filterable catalog of full-stack web platforms, mobile applications (React Native), and applied AI systems.
- [Input Shield Playground](https://www.marslanmustafa.com/playground/input-shield): Official documentation, zero-dependency benchmarks (<0.2ms latency), and interactive live browser playground for @marslanmustafa/input-shield.
- [Technical Capabilities](https://www.marslanmustafa.com/capabilities): In-depth breakdown of full-stack engineering, NestJS microservices, React Native offline-first mobile apps, and real-time AI voice agents.
- [Direct Contact](https://www.marslanmustafa.com/contact): Project inquiries, hiring, technical consultation, WhatsApp direct chat, and email scheduling.

## Open-Source Security Package (@marslanmustafa/input-shield)
- [Input Shield NPM Package](https://www.npmjs.com/package/@marslanmustafa/input-shield): Production-grade zero-dependency input defense package for TypeScript, Node.js, and browser runtimes.
- [GitHub Repository](https://github.com/marslanmustafa/input-shield): Source code, Vitest unit test suite, and CI workflows.
- **Key Capabilities:**
  - In-memory sanitization against toxic profanity, Cyrillic / homoglyph bypasses, and leet-speak obfuscation.
  - Phishing, affiliate link, and repetitive spam pattern mitigation.
  - Structural gibberish and keyboard-mash detection using consonant-density heuristics.
  - Sub-0.2 millisecond average latency with zero third-party transitive dependencies.
  - Dual build artifacts (ESM + CommonJS) for universal framework compatibility (React, Next.js, Express, NestJS, Bun).
- **Quick Install:**
  ```bash
  pnpm add @marslanmustafa/input-shield
  # or
  npm install @marslanmustafa/input-shield
  ```

## Licenses & Certifications
- **Microsoft Certified: Azure AI Fundamentals**
  - **Issuer:** Microsoft
  - **Issued:** Jun 2026
  - **Credential ID:** `D7CBEFBCF2426C3A`
  - **Skills Verified:** Artificial Intelligence (AI), Natural Language Processing (NLP), Azure Cognitive Services, Machine Learning Workflows
  - **Verification:** [Certificate Treasury](https://www.linkedin.com/in/marslanmustafa/overlay/Certifications/1288930887/treasury/?profileId=ACoAAEs_UxYBGrldI8hFmOEXfN5KgtFpF0j1WkY) | [Skills Association](https://www.linkedin.com/in/marslanmustafa/overlay/1288930887/skill-associations-details/?associationType=certifications)

- **Partner: CPA - Programming Essentials in C++**
  - **Issuer:** Cisco Networking Academy
  - **Issued:** Jun 2024
  - **Credential ID:** `53ec8804-572a-459e-b4b4-2123503d355e`
  - **Skills Verified:** C++ Programming, Memory Management, Object-Oriented System Architecture, Algorithmic Problem Solving
  - **Verification:** [Certificate Treasury](https://www.linkedin.com/in/marslanmustafa/overlay/Certifications/764901610/treasury/?profileId=ACoAAEs_UxYBGrldI8hFmOEXfN5KgtFpF0j1WkY) | [Skills Association](https://www.linkedin.com/in/marslanmustafa/overlay/764901610/skill-associations-details/?associationType=certifications)

## Education
- **Bachelor of Science in Software Engineering (BSSE)**
  - **Institution:** Virtual University of Pakistan
  - **Period:** 2023 — Present
  - **Focus:** Data Structures, Operating Systems, Database Management Systems, Software Architecture, Distributed Systems.

## Professional Experience
- **Lead Full Stack Developer** — *Divineesoft Technologies* (Jan 2026 — Present · Hybrid)
  - Leading backend system architecture, microservice APIs, PostgreSQL/MongoDB schemas, and Stripe multi-tenant billing for Barberzlink and commercial SaaS clients.
- **Full Stack Developer** — *Codefyze* (Sep 2025 — Jan 2026 · Remote)
  - Engineered Stripe Connect marketplace billing, license-test booking platform with calendar scheduling, and granular role-based access control (RBAC).
- **Full Stack Developer** — *Devsinn Technologies* (Aug 2024 — Aug 2025 · Full-time)
  - Built Next.js and Node.js applications with JWT/RBAC authentication, Redis caching, and real-time Socket.io chat architectures.
- **Frontend Developer** — *Devsinn Technologies* (Aug 2023 — Aug 2024 · Full-time)
  - Delivered responsive Figma-to-Next.js user interfaces, reusable shadcn/ui design systems, and RTK Query state management.
- **R&D Electronic Engineer** — *AL-MALIK Scientific & Electronic Instruments* (Sep 2021 — Present · Part-time)
  - Conducted hardware R&D, circuit schematic design, PCB assembly, and microcontroller interfacing.

## Mobile Applications on App Stores
- [Masnoon Duas & Azkar](https://www.marslanmustafa.com/masnoonduasazkar): Offline-first Islamic application with authentic Indo-Pak Mushaf pagination, daily Wazaaif, customizable digital tally counter, and native iOS/Android home-screen widgets. Package: `com.marslanmustafa.masnoonduasazkar`.
- [Masnoon Duas Privacy Policy](https://www.marslanmustafa.com/masnoonduasazkar/privacy-policy): Certified 100% offline-first architecture, zero telemetry, zero analytics trackers, strict COPPA compliance.
- [Gulshan-e-Namaz](https://www.marslanmustafa.com/gulshan-e-namaz): Authorized digital edition of the 48-page prayer manual by Hazrat Allama Maulana Ghulam Mustafa Pakpattani with illustrated Salah postures and Sunnah rulings. Package: `com.marslanmustafa.gulshanenamaz`.
- [Gulshan-e-Namaz Privacy Policy](https://www.marslanmustafa.com/gulshan-e-namaz/privacy-policy): Completely offline standalone book with FLAG_SECURE protection for sacred Arabic scriptures.

## Production Case Studies
- [Barberzlink](https://www.marslanmustafa.com/projects/barberzlink): Full-stack SaaS (Next.js, NestJS, MongoDB, Stripe, Twilio) — Salon management and booking platform connecting barbers, shops and schools with scheduling, Stripe billing, events and unified administration.
- [Danapani](https://www.marslanmustafa.com/projects/danapani): Full-stack FinTech (Next.js, PostgreSQL, Neon, ReduxToolkit) — Smart finance and cashflow tracking platform for freelancers and small businesses with balance, income, expense and client-side analytics.
- [Licence Help](https://www.marslanmustafa.com/projects/licence-help): EdTech SaaS (Next.js, Node.js, MongoDB, Cloudinary, LinuxVPS) — Driving school management platform connecting learners and instructors across Australia with live availability, progress dashboards and automated payouts.
- [Customisable Wear](https://www.marslanmustafa.com/projects/customisable-wear): Full-stack E-Commerce (Next.js, Node.js, MongoDB, Cloudinary) — Interactive apparel store enabling shoppers to customize and preview clothing designs in real time with integrated order management and authentication.
- [Masnoon Duas & Azkar](https://www.marslanmustafa.com/projects/masnoon-duas-azkar): Android & iOS Application (ReactNative, TypeScript, Zustand, Kotlin, Swift) — Privacy-focused Islamic app with Indo-Pak Mushaf pagination, daily Wazaaif, digital tally counter, post-card sharing and native home-screen widgets.
- [Gulshan-e-Namaz](https://www.marslanmustafa.com/projects/gulshan-e-namaz): Android & iOS Application (ReactNative, TypeScript, Zustand, Kotlin, Swift) — Comprehensive, fully offline Islamic prayer guide with step-by-step Salah instructions, Sunnah methods, rulings, Surahs and Duas.
- [Cosmolink](https://www.marslanmustafa.com/projects/cosmolink): Full-stack SaaS (Next.js, NestJS, MongoDB, Stripe, ReduxToolkit) — Professional networking and employment platform for the beauty and wellness industry with job search, networking feeds, role-based dashboards and a complete admin panel.
- [Voice of AI](https://www.marslanmustafa.com/projects/voice-of-ai): AI Voice Application (Next.js, FastAPI, Vapi, Twilio, WebSockets) — Conversational voice calling agent with automated calls, real-time audio orchestration, live transcripts and post-call summaries streamed to a dashboard.
- [RPS Detection](https://www.marslanmustafa.com/projects/rock-paper-scissors): Computer Vision (PyTorch, YOLO, Python, Real-TimeInference) — Low-latency computer vision model trained to classify hand gestures from live camera streams with high inference speed.
- [Drafidox](https://www.marslanmustafa.com/projects/drafidox): AI Document Tools (Next.js, TypeScript, TailwindCSS, ReduxToolkit) — Suite of AI-powered document utilities including OCR extraction, PDF-to-text conversion and image background removal.
- [Altext](https://www.marslanmustafa.com/projects/altext): AI Accessibility (React.js, TailwindCSS, ReduxToolkit, RESTAPIs) — AI-powered alt-text generator that analyzes imagery, produces semantic descriptions and improves accessibility and SEO compliance.
- [Devsinn Technologies](https://www.marslanmustafa.com/projects/devsinn-technologies): Corporate Website (React.js, FramerMotion, TailwindCSS, Figma) — Corporate agency portal highlighting software engineering, IT consulting, cloud services and case studies with modern animated interactions.
- [Umazing Official](https://www.marslanmustafa.com/projects/umazing-official): E-Commerce (Next.js, React, TailwindCSS, Vercel) — High-conversion storefront built for peak traffic with flash sales, categorized catalogs, cart state and promotional campaigns.
- [Umazing Admin](https://www.marslanmustafa.com/projects/umazing-admin): Admin Dashboard (React.js, Recharts, TailwindCSS, Redux) — Role-based administration for product CRUD, order tracking, user management and revenue analytics.
- [Meri Ride](https://www.marslanmustafa.com/projects/meri-ride): Accessible Logistics (React.js, TailwindCSS, ReduxToolkit, Figma) — Inclusive transportation and courier portal built to WCAG guidelines and designed to create earning opportunities for people with disabilities.
- [Withdrawn](https://www.marslanmustafa.com/projects/withdrawn): Creative Interface (React, CSSModules, FramerMotion, AntDesign) — Experimental single-page app showcasing complex layout animation, bold typography and detailed micro-interactions.
- [Zeeshan Portfolio](https://www.marslanmustafa.com/projects/zeeshan-portfolio): Developer Portfolio (Next.js, FramerMotion, TailwindCSS) — Developer showcase for a Flutter and MERN engineer featuring smooth transitions and responsive project stories.
- [Sohaib Portfolio](https://www.marslanmustafa.com/projects/sohaib-portfolio): SQA Portfolio (HTML5, CSS3, JavaScript, Netlify) — Professional portfolio presenting automated testing competencies, SQL skills and quality-assurance project experience.
- [PB Bookhub](https://www.marslanmustafa.com/projects/pb-bookhub): EdTech Platform (HTML5, CSS3, JavaScript, Netlify) — Free educational textbook hub indexing PCTB and Tanzeem ul Madaris curricula from primary through intermediate studies.
- [Bargainex](https://www.marslanmustafa.com/projects/bargainex): Deals Marketplace (FullStack, Frontend, E-Commerce) — Bargain and deals marketplace platform built for product discovery and value-focused shopping.
- [Jobify](https://www.marslanmustafa.com/projects/jobify): Job Board (FullStack, Frontend, JobPlatform) — Recruitment portal for publishing vacancies, managing candidate profiles and tracking applications.
- [Input Shield](https://www.marslanmustafa.com/projects/input-shield): Open-Source Security Package (TypeScript, NPMPackage, Zero-Dependency, Zod, Node.js, Vite) — Zero-dependency TypeScript input defense package. Blocks profanity, leet-speak evasion, Cyrillic lookalikes, spam links, and keyboard mash in <1ms.

## Developer Profile & Contact Channels
- **Full Name:** Muhammad Arslan Mustafa
- **Professional Title:** Lead Full Stack Developer & AI Application Engineer
- **Location:** Lahore, Punjab, Pakistan (UTC+5 / PKT) · Works with clients worldwide
- **Direct Email:** marslanmustafa391@gmail.com
- **Direct WhatsApp:** https://wa.me/923184652204 (+92 318 4652204)
- **LinkedIn Profile:** https://www.linkedin.com/in/marslanmustafa
- **GitHub Profile:** https://github.com/marslanmustafa
- **NPM Profile:** https://www.npmjs.com/~marslanmustafa
- **Technical Competencies:** Next.js 15, React 19, TypeScript, React Native (Expo & CLI), Node.js, NestJS, Python, FastAPI, PostgreSQL, MongoDB, Neon, Prisma, Redux Toolkit, Tailwind CSS v4, Vapi, LangChain, Twilio, Docker, Git.