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Full Stack Software Engineer with 4+ years of experience building SaaS platforms, web applications, and business software—handling everything from architecture and database design to deployment. I’ve shipped production systems including e-commerce, CRM/HRM, SMS marketing, bulk email campaigns, and multi-tenant field service platforms.…

Duryab Khan

Full Stack Developer, Web Developer, Front-End Developer, +5

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Full Stack Software Engineer with 4+ years of experience building SaaS platforms, web applications, and business software—handling everything from architecture and database design to deployment. I’ve shipped production systems including e-commerce, CRM/HRM, SMS marketing, bulk email campaigns, and multi-tenant field service platforms.…

Available to hire

Full Stack Software Engineer with 4+ years of experience building SaaS platforms, web applications, and business software—handling everything from architecture and database design to deployment. I’ve shipped production systems including e-commerce, CRM/HRM, SMS marketing, bulk email campaigns, and multi-tenant field service platforms.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Remote Software Engineer (Part-time) at Viral Tech (Norway-based startup)

December 1, 2025 - Present

Developed an AI chatbot platform in collaboration with an AI engineer: integrated a FastAPI backend into a Next.js app, built a full control dashboard, and implemented an embeddable chatbot widget. Built the company website and custom CMS using Next.js and Node.js. Managed VPS setup and deployments using Coolify.

Senior Software Engineer (Team Lead) at Zevitech Karachi, Pakistan

June 1, 2025 - Present

Led development across multiple client and internal products as a team lead. Built an e-commerce platform (HelixPep) with CMS, payments, and an admin dashboard. Developed a multi-page corporate website with dynamic content management. Created internal CRM and HRM systems for lead and employee operations. Built a bulk email campaign system using queue-based delivery and campaign management. Developed an AI calling bot using VAPI and Twilio with call handling and payment integration.

Senior Software Developer at Zevitech

June 1, 2025 - Present

Built an AI-powered bulk messaging system with Telnyx integration, applying sentiment analysis to qualify leads and auto-route high-value prospects for follow-ups.

Full Stack Developer at SavTech Digital (Remote)

January 1, 2025 - May 31, 2025

Built a CRM for lead management and sales tracking. Contributed to an AI-powered sales system for local marketplaces with Mapbox integration. Designed database schemas for high-volume operations.

Full Stack Developer at SavTech Digital

December 1, 2024 - Present

Built an AI-powered bulk messaging system with Telnyx integration and a robust CRM for office operations; implemented sentiment analysis for lead qualification and auto-routing high-value prospects for follow-ups. Designed and deployed a UI for a location-based analytics project, integrating Mapbox with proprietary sales data to deliver real-time, location-based performance insights across Karachi.

Full Stack Developer at SavTech Digital

December 1, 2024 - Present

Built and deployed a custom CRM system to optimize client and workflow management; engineered a robust CRM and streamlined workflows; developed an intuitive HRM platform and UI for the Growmetric project by integrating Mapbox with proprietary sales data to deliver real-time, location-based insights across Karachi.

Independent Contractor - Messaging App at Anonymous Chatting Application

September 1, 2024 - Present

Developed a real-time AI-powered anonymous chat platform using the MERN stack with Redis caching for performance and WebSockets for bi-directional communication. Ensured scalability and a responsive user experience.

Independent Contractor at MessageMoment

September 1, 2024 - Present

Developed a real-time anonymous chat application using the MERN stack; integrated Redis caching for optimized performance and WebSockets for instant bi-directional communication; ensured scalability and responsiveness for high-traffic scenarios.

Academic Project - University Final Year Project at Iqra University

August 1, 2024 - Present

AI-powered text processing project focusing on paraphrase detection/checking system. Built using NLP and deep learning to enhance readability while preserving meaning. Developed a React.js frontend and a Node.js backend with Python NLP libraries.

Frontend Developer - Remote Intern at Tech Solutions (Grow Intern)

October 1, 2022 - Present

Promoted web and mobile app solutions, focusing on the MERN stack, Next.js, and React Native. Engaged with potential clients to understand their needs, contributing to sales growth and delivering robust front-end implementations.

Frontend Developer Intern at Grow In Tech Solutions

October 1, 2022 - Present

Remote internship focusing on MERN stack web and mobile app development; engaged with potential clients to understand needs and contributed to consistent growth in project delivery and user experience.

Web Developer (Self-employed) at Freelance

September 1, 2021 - December 1, 2024

Built MessageMoment, a secure real-time chat application using WebSockets with privacy-focused features. Developed a multi-vendor e-commerce marketplace. Delivered multiple client websites while completing BSCS solo and in team collaborations.