Umar Mahmood Shaikh

Umar Mahmood Shaikh

.NET Developer

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  • Timeline

  • About me

    Backend Engineer at Etisalat - elGrocer, AI Hackathon Gold Medalist 🥇

  • Education

    • National University of Computer and Emerging Sciences

      2018 - 2022
      Bachelor's degree Computer Science

      Activities and Societies: Silent Steps.

    • University of Cambridge

      2014 - 2016
      Olevels Sciences
    • Punjab Group Of Colleges

      2016 - 2018
      Fsc Pre-Engineering
  • Experience

    • Aim Solutions

      Aug 2021 - Sept 2021
      .NET Developer

      Contributed to .Net Core and AngularJS web application development.Collaborated on RESTful API design and implementation.Built responsive UIs and implemented user authentication.Adept at Github, Postman, Jmeter for development and debugging.Strong collaboration and teamwork skills.

    • Tutor with Preply

      Aug 2021 - Sept 2021
      Tutor
    • Upwork

      Dec 2021 - Jul 2022
      Full-stack Developer

      Developed robust backend systems using Ruby on Rails, RSpec, and Grape APIs, GraphQL. Implemented efficient CRUD operations and leveraged PostgreSQL for reliable data storage. Contributed to the development of Health application, Basic Calculator APIs by using GraphQl and Grape APIs development in Ruby on Rails

    • ElGrocer by Smiles - Online Grocery Delivery

      Jul 2022 - now
      Backend Engineer

      Backend Developer- Single Store: Developed highly scalable APIs with Redis, slashing database calls by 30% and achieving sub-200ms response times through optimized queries and rigorous RSpec testing.- Eat Easy Integration: Integrated a third-party delivery app using asynchronous communication (background jobs, Kafka, webhooks), optimizing CRUD APIs by 20%.- Address Centralization: Led a team to build a scalable API for a high-traffic project, minimizing database load by 15% through Redis caching and optimized Postgres calls.- Azure Migration: Successfully migrated a complex Ruby on Rails monolith application to Azure, leveraging cloud services for efficient scaling and CI/CD. Implemented CI/CD pipelines (e.g., GitHub Workflows) for automated testing and deployment.- Plytix PIM Integration: Designed and implemented a microservices architecture for product information management, handling complex data migrations and integrations.- AI-based Delivery Slot Optimization: Developed an AI-powered solution to optimize delivery slot availability, winning a hackathon competition. Leveraged a custom-trained model on ChatGPT to analyze historical data and predict peak delivery times, considering weather conditions, events, and user instructions.- Rails 5 to 7 Upgrade: Successfully upgraded a complex Ruby on Rails monolith application from Rails 5 to Rails 7, overcoming numerous compatibility issues and ensuring smooth functionality. This challenging migration involved meticulous planning, extensive testing, and a deep understanding of Rails internals.Conclusion:Proficient in Ruby on Rails, microservices, data migration, performance optimization, cloud technologies, machine learning, and AI. Passionate about building scalable, efficient, and innovative backend systems. Show less

  • Licenses & Certifications

  • Honors & Awards

    • Awarded to Umar Mahmood Shaikh
      AI Hackathon Gold Medalist elGrocer by Smiles Aug 2024 Utilizing AI to predict peak delivery slots based on orders history and various other metrics, assign additional fees to these slots automatically.