Who is Shahzaib and what is his technical background?

Shahzaib is a Full-Stack & AI Engineer with 4+ years of hands-on production experience architecting SaaS platforms, autonomous multi-agent workflows, and scalable backends. He holds an MS in Artificial Intelligence (MSAI) and specializes in Next.js, FastAPI, Node.js, and custom Model Context Protocol (MCP) integrations.

What services does Shahzaib offer for startups and enterprises?

Shahzaib offers Full-Stack SaaS Development (Next.js, FastAPI, PostgreSQL, Stripe), Autonomous AI Agents & Swarms (LangGraph, CrewAI), Custom MCP Servers & n8n Workflows, GoHighLevel (GHL) Voice AI Receptionists, Private Local AI Infrastructure (Nous Hermes 3, Ollama, vLLM), Domain LLM Fine-Tuning (LoRA/QLoRA), and Technical SEO/AEO/GEO Audits.

Can Shahzaib deploy Hermes AI or private LLMs on local hardware?

Yes. Shahzaib designs air-gapped on-premises local AI infrastructure running Nous Hermes 3, Llama 3, and DeepSeek via Ollama, vLLM PagedAttention, and Docker Compose with OpenAI-compatible API reverse proxies to eliminate cloud data leaks and GPU API costs.

How does Shahzaib optimize websites for SEO, AEO, and GEO?

Shahzaib optimizes platforms across three search layers: Traditional SEO (95-100 Core Web Vitals on Lighthouse, clean SSR/SSG rendering), Answer Engine Optimization (AEO via rich Schema.org JSON-LD microdata for Google featured snippets and voice search), and Generative Engine Optimization (GEO via structured entities and llms.txt knowledge bases for ChatGPT Search and Perplexity citations).

Back to all projectsFull-Stack SaaS

Stack Digital Card•Full-Stack Developer•2024

Stack Digital Card — Dynamic NFC & Digital Identity SaaS

Modern NFC and digital profile management SaaS allowing professionals and enterprises to exchange contacts, showcase portfolios, and capture leads.

Visit Live Platform Discuss Similar Architecture

15,000+

Profiles Created

Serving individual creators and corporate enterprise sales teams

99.98%

Platform Uptime

High-availability deployment ensuring instant QR and NFC profile loading

Lead Capture Rate

Direct CRM contact integration boosts in-person networking conversion

Stack Digital Card — Dynamic NFC & Digital Identity SaaS

Overview

Project Architecture & Objectives

Key Capabilities Delivered

Built dynamic card builder with live previews, custom color palettes, and draggable profile blocks

Engineered backend REST APIs with Express.js and MongoDB for real-time contact synchronization

Integrated Stripe billing for monthly/annual subscriptions and physical custom NFC card orders

Created instant vCard (.vcf) download generation compatible across iOS and Android address books

Deep Dive

Engineering Challenges & Solutions

Critical architectural hurdles solved to deliver performance, security, and scale.

Instant Mobile Profile Load Speeds

The Challenge:

Profiles shared via NFC or QR code in poor cellular conditions must load instantaneously to avoid lost networking opportunities.

Architectural Solution:

Implemented edge caching with Next.js ISR and aggressively optimized media assets through Cloudinary with WebP compression.

Tangible Result: Reduced average mobile load time to under 400ms globally.

Interface Showcase

Visual Systems & User Experience

Stack Digital Card — Dynamic NFC & Digital Identity SaaS screenshot 1

Stack Digital Card — Dynamic NFC & Digital Identity SaaS screenshot 2

Stack Digital Card — Dynamic NFC & Digital Identity SaaS screenshot 3

Technologies & Infrastructure

Next.jsReact.jsNode.jsExpress.jsMongoDBMongooseStripeCloudinaryTailwind CSS

Previous Case StudyDomain LLM Fine-Tuning & Curated Data Preparation Pipeline

Next Case StudyRecoverPay — WhatsApp Lead Recovery & Conversational CRM SaaS

Start Building

Have a Complex AI or Full-Stack System in Mind?

Whether you need custom MCP servers, RAG pipelines, autonomous n8n workflows, or scalable SaaS backends, let's build it right the first time.

Book an Architecture Call