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I’m a Software Engineer, Instructional Designer, and IT Instructor with over 10 years of software development experience and 7 years in teaching and curriculum design. I specialize in building robust, scalable software solutions while also designing and delivering engaging, real-world training programs that bridge theory and practice. As a developer, I’ve built enterprise-grade applications using Java, J2EE, Spring, React, PHP, and Python. My hands-on experience ensures every project I take on is technically sound, performance-driven, and aligned with modern development standards. As an educator, I’ve taught software development, AI integration, and full-stack (MERN) development at institutions such as CircuitStream, triOS College, and Georgian@ILAC. I design full curriculum packages, video-based lessons, and corporate upskilling programs that simplify complex topics and make learning actionable. My approach is rooted in mindful education—using storytelling, reflection, and project-based learning to make concepts stick. What I can help you with: - Software Development (Full Stack, AI Integration, API Design, Automation) - Curriculum & Course Design (academic, corporate, or e-learning) - Technical Content Creation (slides, videos, documentation, and labs) - Training & Instruction (Python, Java, React, SQL, Cloud, DevOps) - Assessment Design (quizzes, projects, and evaluation frameworks) If you’re looking for a professional who combines deep technical expertise with a passion for clear, effective teaching, I’d love to collaborate with you to build high-quality software and impactful learning experiences.

******************************************** Portfolio: https:// rosnik.dev ******************************************** Full-stack developer with 4+ years of experience building end-to-end web platforms, event-driven microservices, and software for the built environment (BIM/LCA). Developer of a production BIM–LCA platform for the National Research Council Canada, with deep expertise across the modern JavaScript/TypeScript ecosystem (React, Next.js, Node.js, Nx) alongside Python/Java back-ends and containerized DevOps. Actively ship AI-powered, real-time, and mobile SaaS products end to end — from data model and API to deployed UI.

I’m a Principal Full Stack Engineer and Software Architect with 15+ years of experience of designing and building scalable SaaS, Fintech, Healthcare, and E-Commerce projects, and now evolving those platforms with AI-driven capabilities. I design architectures where LLMs, embeddings, and data pipelines work alongside robust APIs, enabling automation, insight generation, and conversational interfaces inside enterprise products. I’ve worked across the full company spectrum: • Startups that needed rapid MVPs, lean architectures, and fast iteration • Scaleups where performance, stability, and automation become critical • Enterprises with complex compliance, multi-team collaboration, and long-term architectural planning My Teck Stacks & Specializations: • Frontend: React, Next.js, TypeScript, Tailwind, Material UI • Backend: Node.js (Express, Nest.js), Python (FastAPI, Django), Java, C#, REST, GraphQL, WebSockets • AI & Data: LLMs, RAG pipelines, embeddings, vector DBs, LangChain, LlamaIndex, ETL/ELT • Cloud & DevOps: AWS, Azure, GCP, Docker, Kubernetes, Terraform, CI/CD (GitHub Actions, Azure DevOps) • Databases: PostgreSQL, MySQL, MongoDB, Redis, DynamoDB • E-Commerce / CMS: Shopify, WooCommerce, WordPress (custom plugins, headless setups) I specialize in system and database architecture, designing platforms that handle complex business logic, high traffic, and real-time data at scale. I build distributed ecosystems using domain-driven design, microservices, and event-driven patterns, supported by resilient messaging workflows, serverless compute, and horizontally scalable APIs. From orchestrated services to autonomous event pipelines, and from optimized relational models in PostgreSQL/MySQL to high-throughput document and cache layers in MongoDB and Redis, I ensure every layer of the system is tuned for performance, reliability, and seamless growth. On the product side, I’ve built and optimized Shopify, WooCommerce, and custom WordPress solutions - integrating payments, automating operations, and improving conversions through smart architecture and automation. Clients value me for translating complex requirements into intuitive, high-performance applications while leading projects with transparency and efficiency. Every engagement is about long-term reliability. I ensure that what we build today continues to support tomorrow’s growth.

I help startups build and scale SaaS products, backend systems, and AI-powered applications. I specialize in Laravel development, API integrations, automation systems, and subscription-based SaaS products. I’ve built systems including: SaaS platforms with billing and subscriptions AI-powered applications using LLM APIs Chrome extensions and workflow automation tools Real-time backend systems and APIs Payment systems and Stripe integrations Tech stack: Laravel, PHP, MySQL, Redis, Docker, Stripe, OpenAI API, Claude API, JavaScript I focus on building reliable backend systems, clean architecture, and fast delivery. If you need a developer to build or improve your backend system, I can help.

Full Stack AI SaaS Engineer | Building Cloud-Native, AI-Driven SaaS Platforms | Java/Spring Boot, LLMs, AWS & GCP, React, Next.js, Flutter I’m Shahzad, a Certified Java Architect with 10 + years of experience building scalable, high-performance SaaS applications, now focused on integrating AI and automation into modern cloud products. I’ve engineered AI-powered SaaS platforms that combine conversational intelligence, LLM pipelines, and serverless cloud infrastructure. My passion is turning complex workflows into simple, intelligent, user-friendly applications that scale globally. ------------------------------------------------ What I Build: AI-Driven SaaS Products: Multi-tenant cloud apps powered by LLMs (GPT, Claude), RAG, and custom ML APIs Conversational & Voice AI Agents: Twilio + n8n + GPT workflows for 24/7 automation (healthcare, enterprise) Data Intelligence Apps: predictive analytics, anomaly detection, recommendations, and real-time dashboards Cloud-Native Architectures: Java/Spring Boot microservices, REST/GraphQL APIs, and event-driven backends ------------------------------------------------ Core Stack: Backend & Cloud: Java (8 → 25), Spring Boot 3, AWS (Lambda, S3, RDS), GCP (BigQuery, Vertex AI), Docker, Kubernetes AI/ML: Vertex AI, OpenAI API, BigQuery ML, Python (NumPy, Pandas, Scikit-learn), RAG, LLM Integration Frontend: React, Next.js, TypeScript, Tailwind, Flutter (for cross-platform mobile apps) Integrations: Twilio, Stripe, Shopify, BigCommerce, REST/SOAP APIs, Kafka, RabbitMQ ------------------------------------------------ DevOps & Data: CI/CD pipelines with GitHub Actions & Jenkins Cloud monitoring & observability (CloudWatch, GCP Logging) SQL (PostgreSQL, MySQL) & NoSQL (MongoDB, Redis) ---------------------------------------------------- Certifications: Oracle Certified Java Programmer (2022) AWS Certified Developer – Associate (2023) Amazon Machine Learning Specialty (2023) Spring Boot 3 & Spring 6 Architect (2020) SAS Programming Essentials (2023) ------------------------------------------------ Let’s Build Something Smart: Whether you’re launching an AI-powered SaaS platform, a voice or chat agent, or a data-driven product, I can help you design and deliver a system that’s intelligent, scalable, and future-ready.

I build AI Agent and Automation that run like a full-time teammate, connecting your everyday tools, powering them with AI into clean, repeatable workflows that run 24/7. Backed by 10+ years of software development, my systems are built the way real software is built: properly architected, documented, and scalable. 250+ workflows deployed, saved B2B teams 20+ hrs weekly and scaled operations from zero to $843K+ in annual revenue. ✅ WHAT I BUILD FOR YOU: AI AGENTS & WORKFLOWS: → n8n AI Agent | Make.coml AI Agent | Claude AI + OpenAI integration → AI Chatbots for WhatsApp, Telegram, Instagram, Email & Web → AI Voice Agents (Twilio, Ultravox, Vapi, ElevenLabs) → Custom AI automation with LangChain, RAG, and live vector stores GOHIGHLEVEL (GHL): → Full CRM pipeline automation & setup → GHL AI chatbot, appointment booking, lead qualification → GHL Workflow + Make.coml / n8n / Zapier integration CRM & DATABASES SYSTEMS: → CRM Advanced Dashboards, Automations & Workflow Optimization → HubSpot, Salesforce, Airtable, Monday.coml → Zoho, Pipedrive, Close.coml → Airtable, Google Sheet and SmartSuite base architecture MAKE.COMI (INTEGROMAT): → Multi-step scenario design, debugging & optimization → Make.coml + GoHighLevel integration → Make.coml + Airtable / Google Sheets / HubSpot N8N AUTOMATION: → Cloud & self-hosted n8n setup + custom workflow design → n8n AI Agent with Claude AI / OpenAI → n8n + webhook + REST API integrations → Zapier → n8n migrations (rescue broken workflows) CUSTOM APP DEVELOPMENT: → Custom App Development — full-stack & backend → Python, JavaScript/TypeScript, Node.js, Golang → API Integration — REST APIs, webhooks, OAuth → Custom integrations across 20+ platforms (Stripe, Twilio, Slack & more). → Build SaaS apps with Next.js, React, Supabase - authentication, billing, AI features baked in. Deployed and ready to scale. ============================ 🏆 RESULTS DELIVERED: • Legal Tech: Built AI platform for 28,000+ claimants → report cost cut from £1,000+ to pennies • Real Estate: AI lead engagement + CRM automation → scaled to $843K+ annual revenue • Enterprise: process automation → $3.6M+ in operating cost savings • Content Ops: 30+ skill-pack Claude pipeline → 2 weeks down to under 1 hour • Finance: automated accounts receivable reconciliation → eliminated 25+ hours/week of manual work and accelerated collection times. • Built AI Lead Generation & Appointment Automation system for Home Care Agency ============================ 🔧 TOOLS & TECHNOLOGY: AI & Automation: Claude API, Claude Code, MCP (Model Context Protocol), n8n, AI Agents Programming: Python, TypeScript, Next.js, React Databases & Backend: SQL, Supabase, API Integration DevOps: Docker, Vercel CRM & Marketing: GoHighLevel, Pipedrive, Salesforce, HubSpot, Zoho Content & Data: Web Scraping (Apify), Remotion, HeyGen, ElevenLabs Make.coml | n8n | Zapier | GoHighLevel | Claude AI | OpenAI | Gemini | Airtable | Google Sheets | Notion | Twilio | WhatsApp API | Webhooks | REST API | ElevenLabs | Groq | LangChain | Airtable | HubSpot | Salesforce | Google Sheets | Stripe | Webhooks | REST API | Python | Quickbook Online | Xero | Monday.coml 📩 Shoot me a message or invitation and I'll send back a personalized Loom breaking down how I'd approach your specific project. No templates, no copy-paste proposals.