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Mabduallah User

@mabduallahuser

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Senior full-stack engineer building AI-powered automation and high-performance web apps.

Pakistan

Message

What I'm looking for

I’m looking for remote work building AI-assisted, webhook-driven products—where I can own end-to-end architecture, ship high-performance React/Node systems, and automate workflows with LLMs, n8n/Zapier, and reliable CI/CD.

I’m a Senior Full-Stack Engineer and AI Workflow Architect with 7+ years delivering end-to-end web applications and AI-powered automation pipelines.

I specialize in Node.js, NestJS, React.js, and TypeScript, integrating LLM workflows (OpenAI GPT-4) with automation engines like n8n and Zapier. I build webhook-driven, event-driven systems that eliminate manual processes and accelerate delivery.

I’ve shipped SaaS platforms, CRM backends, and real-time systems serving up to 50,000 monthly active users, consistently targeting sub-300ms performance. I’ve also implemented CI/CD automation (GitHub Actions) to reduce release errors and maintain zero-downtime deployment practices.

From freelance engagements to in-house roles, I’ve focused on measurable outcomes—reducing task completion time by 45%, cutting content-ops workload by 30%, improving support resolution by 40%, and boosting team velocity through coaching. I’m available for remote engagements worldwide.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Engineer (Freelance)

Current

Self Employed

Jun 2022 - Present (4 years)

Architected and shipped 10+ end-to-end SaaS and CRM products reaching up to 50,000 monthly active users with sub-300ms latency. Built n8n/Zapier workflow automation and GPT-4 integrations, reducing task completion time by 45%, trimming content-ops workload by 30%, and improving release reliability with GitHub Actions CI/CD.

Next.js NestJS N8n Zapier GPT 4 AWS

Senior Software Engineer

Technupur

Jul 2017 - Jun 2022 (4 years 11 months)

Spearheaded full-stack development of 5+ client applications, delivering React frontends with Node.js/Express APIs for 10,000+ monthly active users and sub-300ms API round-trips. Migrated PHP modules to Node.js microservices and optimized AWS CloudFront delivery to cut payload/page-load time by 25%, while automations eliminated 8+ hours/week of manual reconciliation across clients.

React Node Microservices Cloudfront MongoDB CI CD

Junior Software Engineer

Technupur

Aug 2015 - Jul 2017 (1 year 11 months)

Built and maintained PHP and Node.js backend modules for 3+ client websites, delivering all projects on schedule and within scope with repeat engagements. Developed API endpoints to improve request throughput by 20% and supported load testing/debugging that accelerated release cycles by an average of 1.5 days per sprint.