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Ahmad Bin Zahid

@ahmadbinzahid

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Full Stack Engineer with 5+ years building scalable React–Node–Next apps and LLM-powered experiences.

Pakistan

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What I'm looking for

I’m looking for a Senior Full Stack role where I can own end-to-end features, build scalable React/Node/Nest systems, and integrate LLM-driven capabilities. I want a team that values performance, clean architecture, and continuous improvement.

I’m a Full Stack Engineer with 5+ years of experience building end-to-end applications and production-ready systems using React, Node.js, Next.js, NestJS, and Python. I focus on designing scalable architectures, optimizing performance, and shipping clean, maintainable codebases.

As a Senior Full Stack Engineer at CacheLogic, I architect and maintain a multi-tenant SaaS platform serving 3,000+ tenants with secure tenant isolation across the stack. I lead end-to-end feature development—from discovery to production—partnering with product stakeholders to deliver user-centric solutions aligned with business objectives.

I also integrate AI-powered capabilities and Large Language Models (LLMs), using advanced prompt engineering to enhance automation, personalization, and intelligent workflows. To support reliability at scale, I design and automate database migration and maintenance scripts across Node.js and Python services, improving data integrity and deployment reliability.

Previously, at Career Network and Acclivous Byte, I re-architected backend infrastructure (including migrating from Firebase to a scalable Node.js stack), built advanced MongoDB aggregation and search indexing, and established frontend foundations with Next.js and Material UI. I’ve also mentored junior developers, run deep code reviews, and strengthened quality through automated testing (unit, integration, and E2E) and CI/CD best practices.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

CacheLogic

Jan 2024 - Present (2 years 6 months)

Architect and maintain a multi-tenant SaaS platform with secure tenant isolation and end-to-end feature delivery from discovery to production. Integrate AI/LLM-driven capabilities using prompt engineering and improve performance, reliability, and deployment outcomes through backend and frontend optimizations.

React Next.js NestJS Python Tenant Isolation LLM Prompt Engineering Performance Optimization Architecture AI Application Development RAG Database Migration Secure Architecture Technical Troubleshooting

Current

Full Stack Engineer

Current

Career Network

Jan 2023 - Present (3 years 6 months)

Re-architect backend infrastructure by migrating from Firebase to a scalable Node.js (Express.js) application with MongoDB, then transitioning to NestJS for improved type safety, modularity, and maintainability. Build frontend architecture with Next.js and Material UI (MUI) aligned to Figma design systems and optimize MongoDB queries for search and data retrieval.

Firebase Node MongoDB NestJS MongoDB Aggregation Pipelines Next.js Material UI Frontend Architecture Indexing Responsive UI

Full Stack Engineer

Acclivous Byte

Jan 2021 - Jan 2023 (2 years)

Deliver enterprise-grade full-stack onsite applications across architecture design, development, deployment, and post-launch optimization. Implement scalable backend APIs and modular frontend architectures using TypeScript and Python, improve engineering quality via mentoring and code reviews, and ensure reliability with automated testing and CI/CD practices.