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Harpreet KumarHK

Harpreet Kumar

Senior Mobile / Web Application Developer

500 €/Tag
Berlin, DE
8-15 Jahre

Durchschnittliche Reaktionszeit: 1h

Über Harpreet

I am a React Native Developer with 5+ years of experience building high-performance cross-platform mobile applications for iOS and Android. I specialize in React Native, TypeScript, JavaScript, and Next.js, delivering scalable, production-ready apps with clean UI and optimized performance.

I have built and deployed multiple apps to the App Store and Google Play, working on projects such as CRM platforms, medical apps, delivery apps, and automation tools. My expertise includes REST API integration, state management (Redux, Zustand, React Query), CI/CD pipelines, and performance optimization.

I focus on writing clean, maintainable code and delivering reliable mobile solutions that scale. I can help clients with mobile app development, app architecture, API integration, performance improvements, and publishing apps to stores.
  • Englisch

    Muttersprachlich oder zweisprachig

  • Deutsch

    Grundkenntnisse

  • Hindi

    Verhandlungssicher

  • Punjabi

    Verhandlungssicher

Nur remote
Führt Projekte hauptsächlich remote aus

Projekt- und Berufserfahrung

  • List & Sell Gmbh
    Senior Mobile / Web Application Developer
    SOFTWARE-HERSTELLER
    Oktober 2021 - Heute (4 Jahre und 8 Monate)
    Berlin, Germany
    Architected and shipped 8+ cross-platform mobile apps (React Native, TypeScript) across healthcare, logistics, and CRM verticals, serving thousands ofactive users on iOS and Android. Owned full development lifecycle from Figma mockups to App Store/Play Store deployment, including UI implementation, RESTAPI integration, auth flows, automated testing (Jest, Detox), and CI/CD pipelines via GitHub Actions. Managed release cycles for 8+ apps on App Store and Google Play, maintaining 99%+ crash-free rates and coordinating OTA updates via CodePush/Expo Updates. Collaborated in 2-weekAgile sprints with cross-functional teams (PM, design, backend), translating business requirements into technical specs and shippable features. Mentored 2–3junior developers through structured code reviews, pair programming, and React Native best-practice workshops, improving team velocity and code quality.
    React Native React.js Next.js Tailwind css Mobile application
  • UIZ GmbH,
    Mobile App Developer
    April 2021 - September 2021 (5 Monate)
    Berlin, Germany
    Delivered 2 restaurant apps (Mirch Masala, India Palace) end-to-end using React Native, featuring menu browsing, real-time order tracking, and push notification alerts. Built custom navigation flows and order management workflows, reducing user drop-off during checkout. Managed build configuration and deployment pipeline, delivering production-ready APKs and IPAs to clients.
  • Sebiz,
    iOS Developer
    Mai 2017 - Mai 2018 (1 Jahr)
    Sahibzada Ajit Singh Nagar, Punjab, India
    DevelopednativeiOSapplicationsusingSwiftandXcode,implementinguserauthentication,customUI components,andApplePushNotificationService(APNs). IntegratedRESTfulAPIswithbackendservices,ensuringdataconsistencyandofflinecachingsupport.

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Ausbildung und Abschlüsse

  • MASTER'S
    ARDENUNIVERSITY,BERLIN,GERMANY
    2020
    MASTER'S
  • B.TECH
    PUNJABTECHNICALUNIVERSITY,INDIA
    2018
    B.TECH

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