Muhammad Zahid
Full Stack Engineer  ·  Ruby on Rails  ·  DevOps  ·  5+ Years
+92 3XX-XXXXXXX zahidensari116@gmail.com github.com/Ansarissab linkedin.com/in/zahidensari Lahore, Pakistan
Professional Summary

Full Stack Engineer with 5+ years of experience delivering production-ready web applications for clients across FinTech, eCommerce, fleet management, and SaaS. Specializes as a Ruby on Rails Developer and DevOps Engineer — with a proven record of cutting operational costs, streamlining revenue flows, and shipping reliable systems at scale. Owns projects end-to-end: from architecture and API design to cloud deployment and client handoff.

Technical Skills
Languages Ruby, JavaScript, TypeScript, C#, Python Frontend Hotwire, Turbo, Stimulus, React, Angular, Tailwind CSS Backend Ruby on Rails, Next.js, GraphQL, RESTful APIs, Sidekiq Databases PostgreSQL, MySQL, MongoDB, Redis, Firebase, Supabase Cloud AWS (S3, EC2), Azure, Heroku, DigitalOcean, Hetzner DevOps Kamal, Docker, Kubernetes, Helm, Terraform, Jenkins, GitHub Actions Testing RSpec, MiniTest, FactoryBot Integrations Stripe, Google OAuth, Slack, BingAI, Twilio, SendGrid
Professional Experience
Independent Consultant Apr 2022 – Present
Upwork — Contract Engagements
  • Reduced administrative overhead by 60% for a 50+ vehicle fleet by architecting an automated booking system and Stripe-integrated payment gateway using Ruby on Rails — eliminating 15+ hours of manual scheduling per week and enabling online revenue collection for the first time.
  • Developed Kleptofinder, a reverse image search platform enabling artists to detect unauthorized use of their creative work online — cutting detection time from days to seconds using BingAI and deployed on Azure with automated CI/CD pipelines.
  • Implemented product listing, order management, and Stripe payment features for Craftfoxes, an eCommerce platform serving 5,000+ active sellers; led a Ruby on Rails version upgrade that improved security and cut technical debt — delivered with zero downtime (AWS, RSpec).
Software Engineer Sep 2020 – Apr 2022
Devsinc
  • Architected an automated payout and financial reporting system for Commission Smarter, a FinTech platform, using Ruby on Rails and Sidekiq — achieving 99.9% transaction accuracy, eliminating 20+ hours of weekly manual reconciliation, and reducing infrastructure costs by 15% (PostgreSQL, AWS).
  • Reduced average query latency by 35% and server-side errors by 20% across 3 production apps by implementing Redis-based ActiveRecord query caching for GraphQL APIs — improving performance for 1,000+ monthly active users (PostgreSQL).
  • Spearheaded Docker deployments to AWS EC2 with automated CI/CD pipelines, cutting release cycle time and ensuring consistent, zero-error production rollouts across all client projects.
Co-Founder & Technical Lead Mar 2019 – Jul 2020
Takhleeq — Tech Startup (UCP)
  • Led MVP development from ideation to launch as Co-Founder, acquiring 200+ early adopters and maintaining 99.9% uptime by architecting a scalable AWS infrastructure using EC2, S3, and RDS — owning all technical decisions from stack selection to production deployment.
Notable Side Projects
Secure Text Sync
github.com/Ansarissab/secure-text-sync

Solved cross-device text transfer by designing a serverless, QR code-based sync tool — no login, no install, instant pairing. Fully static, hosted free on GitHub.

Stack: HTML, CSS, JavaScript, Firebase
Privacy-First Image to PDF
github.com/Ansarissab/free-secure-image-to-pdf-generator

Produced a browser-only image-to-PDF converter that processes all files locally on the client device — no upload, no server, no data exposure.

Stack: JavaScript, HTML, CSS
Education & Certifications
Bachelor of Science in Computer Science Graduated 2020
University of Central Punjab (UCP), Lahore