
Fullstack Developer
Khalifa stands out for his microservices, event-driven architectures, and domain-driven design expertise. Known for his leadership and innovative problem-solving, he has worked in logistics, fintech, analytics, management tools, e-learning, and eCommerce.
At Swftbox, Khalifa led a team to upgrade the platform, reducing order creation time from 6 minutes to 2 seconds per 100 orders, boosting revenue by 4%, and enhancing efficiency.





Instrumental in spearheading the bootstrapping process for Version 2, laying the foundation for the next-gen platform;
Transformed the code review culture, fostering a collaborative and quality-driven development environment;
Pioneered a seamless pipeline for publishing multiple npm packages, streamlining development and distribution processes;
Played a key role in architecting the frontend, crafting innovative and scalable solutions to meet evolving user needs;
Skillfully identified and optimized flaky tests in critical backend services, bolstering system stability and performance.


Engineered a cutting-edge platform upgrade, leading a team of 7 developers to deliver Version 2, setting new scalability, reliability, and observability standards;
Revolutionized order creation, reducing time from 6 minutes per 100 orders to just 2 seconds, resulting in a 4% revenue increase;
Transformed the orders querying system, significantly enhancing operational speed and customer service efficiency.


Spearheaded the development of a cutting-edge notification system powered by dynamic report generation, revolutionizing information delivery;
Unearthed and resolved a subtle issue in the component library, significantly enhancing frontend testing;
Revitalized frontend testing by transitioning from Cypress to React-Testing-Library, reducing CI testing time per merge request by 10 minutes, greatly boosting daily productivity.


Analyzed clients' requirements to ensure applications met their specific needs and expectations;
Led backend development efforts, ensuring robust and efficient backend systems;
Interviewed new candidates to recruit and build a skilled development team, contributing to overall project success;
Mentored frontend engineers, providing guidance and support to enhance their skills and ensure cohesive project development;
Architected solutions, designing comprehensive and scalable system architectures;
Led a small team through the entire development lifecycle, from initial design to final deployment, ensuring timely and efficient project delivery;
Developed an Instagram-like Android application using Android Native, focusing on features such as photo sharing, user authentication, and social interactions;
Built the backend infrastructure for the application using Java, ensuring seamless integration with the frontend;
Implemented key features and functionalities, ensuring a smooth user experience and robust application performance;
Designed and built an IoT device for running advertisements, enhancing the application's capabilities;
Developed platforms from A to Z, including mobile, desktop, and web applications, ensuring comprehensive solutions for various client needs;
Conducted thorough testing and debugging to identify and resolve issues, improving the application's stability and reliability.

Analyzed clients' requirements to ensure the applications met their specific needs and expectations;
Led a small team through the entire development lifecycle, from initial design to final deployment, ensuring timely and efficient delivery of projects;
Conducted interviews to recruit and build a skilled development team, contributing to the overall project success;
Developed an Instagram-like Android application using Android Native, focusing on features such as photo sharing, user authentication, and social interactions;
Built the backend infrastructure for the application using Java, ensuring seamless integration with the frontend and optimal performance;
Implemented key features and functionalities, ensuring a smooth user experience and robust application performance;
Designed and built an IoT device for running advertisements, enhancing the application's capabilities and providing additional value to clients;
Developed platforms from A to Z, including mobile, desktop, and web applications, ensuring comprehensive solutions for various client needs;
Conducted thorough testing and debugging to identify and resolve issues, improving the application's stability and reliability.

Analyzed client requirements to ensure the application met their needs and expectations;
Led a small team through the entire development lifecycle, from initial design to final deployment, ensuring timely and efficient delivery of the application;
Conducted interviews to recruit and build a skilled development team, contributing to the overall project success;
Developed an Instagram-like Android application using Android Native, focusing on features such as photo sharing, user authentication, and social interactions;
Built the backend infrastructure for the application using Java, ensuring seamless integration with the frontend and optimal performance;
Implemented key features and functionalities, ensuring a smooth user experience and robust application performance;
Designed and built an IoT device for running advertisements, enhancing the application's capabilities and providing additional value to clients;
Conducted thorough testing and debugging to identify and resolve issues, improving the application's stability and reliability.

Developed an Instagram-like Android application using Android Native;
Built the backend for the application using Java;
lmplemented key features such as photo sharing, user authentication, and social interactions;
Ensured seamless integration between the frontend and backend systems;
Conducted thorough testing and debugging to enhance app performance and user experience.
All Fullstack Developers who have applied to Proxify are scored from 0 to 300 on engineering excellence, one of the five parameters we evaluate. This score reflects engineering excellence only, based on interviews, take-home assignments, live coding sessions, and/or on-the-job performance reviews. The curve shows how all evaluated Fullstack Developers are distributed across that range, where our acceptance threshold for this parameter sits, and where Khalifa stands.
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