Ali Abbas Shah

I’m a Principal Software Engineer & Full-Stack Architect with 15+ years of experience designing, building, and scaling high-performance web applications, enterprise platforms, and custom SaaS products. I’ve led engineering teams and delivered reliable software across healthcare, finance, e-commerce, and digital agency ecosystems. My expertise spans Next.js, React, TypeScript, Laravel, Node.js/NestJS, Python/Django/FastAPI, and cloud-native architectures on AWS, Docker, and Kubernetes. I specialize in scalable microservices, high-concurrency systems, database optimization, secure payment integrations, and AI-assisted engineering workflows using tools such as Claude and Cursor. I also specialize in GoHighLevel (GHL) custom development, helping marketing agencies and SaaS founders overcome platform limitations through custom client portals, SSO integrations, GHL Marketplace apps using API v2, and backend API bridges that reduce dependency on costly Zapier/Make automations. ━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 WHAT I BUILD ━━━━━━━━━━━━━━━━━━━━━━━━━━ • Custom SaaS & Web Platforms — End-to-end applications with Next.js, React, Node.js, Python, and Laravel. • GHL Portals & Marketplace Apps — Branded client dashboards, SSO, custom widgets, and API integrations. • High-Concurrency Cloud Systems — AWS architectures using Lambda, ECS, EKS, RDS, and S3. • Database & ETL Solutions — PostgreSQL/MySQL optimization, indexing, query tuning, and reliable data pipelines. • Microservices & API Architecture — Secure, scalable services designed for performance and maintainability. ━━━━━━━━━━━━━━━━━━━━━━━━━━ 📩 LET’S BUILD ━━━━━━━━━━━━━━━━━━━━━━━━━━ Whether you need a Principal Engineer, Technical Lead, Full-Stack Architect, or an experienced developer to build and scale your SaaS or CRM ecosystem, I can help turn complex requirements into reliable, production-ready software.