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Hossam AliHA

Hossam Ali

Senior Frontend Engineer

€200/day
Berlin, DE
3-7 years

Average response time: 1 hour

About Hossam

High-Impact Frontend Engineer with a proven track record of architecting scalable web applications, optimizing user experiences, and leading high-performing development initiatives. Specializing in React, TypeScript, and Micro-Frontends, I excel at transforming complex UI/UX challenges into clean, performant code that drives business metrics.

Whether it is spearheading data-driven A/B testing flows that boost conversion rates, managing seamless migrations, or delivering complex interactive map and data visualization tools, I focus on engineering solutions that scale. A collaborative leader and self-starter, I bridge the gap between technical execution and business goals, ensuring every digital product is robust, thoroughly tested (Jest/Cypress), and built for optimal user engagement.
  • English

    Native or bilingual

  • Arabic

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Delivery Hero
    Frontend Engineer II
    TECH
    June 2021 - Today (5 years)
    Berlin, Germany
    • • Led major projects in the AdTech team, improving user onboarding through enhanced flows and data-driven A/B testing, resulting in increased engagement and conversion rates.
    • • Crafted an interactive map experience with polygon overlaps, calculating percentages and square meters. Elevated the user interface with a heatmap and intuitive filters for swift problem area identification.
    • • Developed multi-variant A/B test plans and manage the implementation.
    • • Self-starter approach to work, with an eagerness to consistently meet, and exceed objectives, and take on more responsibility.
    • • Led migration projects such as migrating from Enzyme to React Testing Library, and Google Maps to Leaflet and CSS migration.
    • • Led a project to achieve 100% unit test coverage, starting from an initial baseline of 64%.
    • • Providing mentorship and facilitating smooth onboarding for newcomers into our codebase.
    • • Working with React, TypeScript, and MicroFrontend.
    • • Working with testing: Jest, Enzyme, React-testing-library, Cypress.
    React.js Typescript HTML/CSS JavaScript
  • Rubikal
    Senior Frontend Engineer
    November 2019 - May 2021 (1 year and 6 months)
    Alexandria, Alexandria Governorate, Egypt
    • • I have been working on uCoach, their coaching SaaS used by multiple US universities to provide a coaching platform for their students.
    • • Implemented new features, optimized existing ones, and rapidly fixed bugs from controller level to UI.
    • • Migrated the existing code from Reflux to Redux-saga.
    • • Migrated the existing code from the React Class Component to the React Function Component.
    • • worked remotely at InsideTrack (US) as part of the Rubikal team. I have worked with their team on the SaaS which helps educational institutions manage and coach students.
    • • Worked remotely at Roadtrip Nation (US) as part of the Rubikal team.
  • Bosta
    Senior Frontend Engineer
    May 2019 - November 2020 (1 year and 6 months)
    • • Led a team of Frontend engineers developing a tracking user interface for our business clients to inquire, view, and interact with their shipments.
    • • Redesigned and dramatically simplified an overly-complex user interface, while preserving all functionality.
    • • Mentored the Frontend interns.
    • • Interviewed the applied engineers for the Frontend engineer position.
    • • Provided code development estimations and coordinated development tasks.
    • • Performed code reviews.

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Education

  • Bachelor of Science in Computer Engineering
    Arab Academy for Science & Technology
    2016
    Bachelor of Science in Computer Engineering
  • Hybris Commerce 6.2 Developer
    SAP
    2018
    Hybris Commerce 6.2 Developer

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