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Mostafa Sakr

@mostafasakr

Senior Frontend Engineer at PaySky building a multi-tenant e-commerce marketplace with tenant-specific themes and permissions.

Egypt

Message

At PaySky, I'm building a multi-tenant e-commerce marketplace with tenant-specific themes, workflows, feature flags, and access controls. I also contribute to a monorepo with shared UI libraries and reusable business logic.

At E2E County (Travware), I developed tourism applications with real-time updates and led a social media integration connecting Meta platforms and LinkedIn. I also refactored the Dart (SaaS) frontend architecture to reduce redundant backend requests.

At Geek Labs, I led a frontend team and built modules for MachineGenius, including AI content generation, automated video production, and HR recruitment. I also built StreetSuite interfaces for following trading strategies, receiving alerts, and managing subscriptions.

Experience

Work history, roles, and key accomplishments

Current

Senior Frontend Engineer

Current

PaySky

Feb 2026 - Present (8 months)

Frontend engineer on a large-scale, multi-tenant e-commerce marketplace platform. Built customizable tenant experiences, implemented tenant-specific workflows and permissions, and contributed to a monorepo consolidating company projects.

React Next.js TypeScript Monorepo Feature Flags Permissions Access Control Unit Testing Code Review Clean Architecture

Senior Frontend Developer

E2ECounty (Travware)

May 2025 - Feb 2026 (9 months)

Developed tourism applications with real-time updates using Server-Sent Events. Led a social media integration project connecting Meta and LinkedIn, and optimized a SaaS platform by refactoring frontend architecture and using Next.js middleware.

Server Sent Events Next.js Jest React Testing Library Social Media Integration API Integration Technical Documentation

Senior Frontend Developer and Team Lead

GeekLabs

Mar 2024 - May 2025 (1 year 2 months)

Led a team of frontend developers, setting standards for architecture, code reviews, and delivery. Built modules for AI content generation, automated video production, and HR recruitment, and interfaces for a stock alerts platform.

Team Leadership Architecture Code Review AI Content Generation Video Production HR Recruitment Stock Alerts

Frontend Developer

SmartVision

Oct 2021 - Oct 2022 (1 year)

Designed and built responsive web applications with React.js, Next.js, Tailwind CSS, and RESTful APIs. Improved performance and responsiveness across projects.

React Next.js Tailwind REST APIs Performance Optimization

Frontend Developer

Valintika

Sep 2020 - Sep 2021 (1 year)

Built responsive, cross-browser interfaces with HTML, CSS, JavaScript, and jQuery. Used AJAX for dynamic content and integrated backend APIs in collaboration with backend teams.

HTML CSS JavaScript jQuery AJAX API Integration