Ahmed Keewan

- Developed Genesis, a powerful database population engine that dynamically generates data for hundreds of tables, thousands of columns, and over 10 million records with an average speed of 200k records/minute. - My code validates and syncs ~500k records every 5 minutes in less than ~300ms. - Improved database hygiene by ~40% through implementing key missing constraints to hundreds of columns across 2 availability zones. - Led the technical design and implementation of an internal data auditing and provisioning service that processes millions of records each month, generating over $50K in MRR. - Optimized performance across multiple services, reducing latency by up to 10x. - Enhanced code quality by integrating advanced tools into the existing CI pipeline. - Led efforts to reduce backup dump sizes by 20x.

- Led the technical design and Implementation of ZenHR's Permission Matrix and ZenATS's RBAC. - Rewrote the reports service in ZenATS from scratch providing up to 10x performance enhancements and utilizing a builder pattern to behave like GraphQL with an average latency of < 150ms. - Handled the backend work needed to integrate ZenATS with Zoom providing a first of its kind experience for our clients and allowing them to schedule and conduct their Zoom meetings within ZenATS. - Got an exceeding the expectations evaluation for 3 cycles in a row. - Set the architecture for and built the backend of ZenATS's AI Job-Candidates Matching. - Initiated and built ZenHR's in-house Translation Management System. - Built the open-source gem acts_as_trackable which simplifies the process of tracking who created/updated your DB records by simply adding one line to your ActiveRecord models.

- Implemented a backend + fronted(flutter) error log tracking system for Bayt's JS and Recruiter Apps. - Refactored the IAP area of the JS App, using BLOC as an architectural pattern and Singleton as a design pattern. - Implemented a full In App Survey system on both the backend + the mobile side. - Upgraded the dynamic links on Bayt JS App. - Upgraded the Deep Links/Universal Links configs for the JS app using state of the art approaches which resulted in increasing the job applications and screen displays by over 100% on the JS App. - Isolated the DEV and Production environments by using Flutter Flavors for our CI pipeline, and 2 Firebase projects. - Implemented a service to track App Uninstalls for the JS App. - Isolated the DEV and Production environments for the ANS + FCM services of the JS App. - Helped refactor Bayt.com JS dashboard which serves over 500k users monthly. - Worked with my seniors on refactoring and revamping Bayt's JS Job Alerts for both ends. - Worked with my seniors on refactoring and revamping Bayt's JS notifications for both ends. - Implemented an Integration testing boilerplate for our QA engineers to help them automate the tests of the JS App.

- Worked on revamping Bayt's Recruiter App. - Implemented a full SDK upgrade for Bayt's JS App using Flutter. - Implemented Apple Social Login service on Bayt's JS App. - Upgraded the IAP using Google Billing Services V3 for the JS App. - Refactored the state management architecture of the JS App using Flutter BLOC. - Developed and maintained all the REST APIs that were needed to support the JS App upon owning the project.

Rank: 1/37