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Oreliau KoumedzroOK

Oreliau Koumedzro

Front-end/mobile developer

€800/day
Rennes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Oreliau

English version bellow

Bonjour, je m’appelle Oréliau.
Je suis passionné par la transformation des idées en réalité grâce à un code efficace et un design soigné.
Si vous souhaitez donner vie à votre vision et en faire une expérience digitale fluide, discutons-en !

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Hi there, I’m Oréliau.
I’m passionate about transforming ideas into reality with efficient code and delightful design.
If you need to turn your vision into a seamless digital experience, let’s connect!

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Rennes (up to 50km), Rennes (up to 50km), Nantes (up to 50km)

Experience

  • Gens de Confiance
    Senior Software Engineer
    SOCIAL NETWORKS
    April 2025 - July 2025 (3 months)
    Nantes, France
    • Managed production app releases for 500,000+ monthly active users, maintaining >99% uptime and smooth deployments across platforms
    • Implemented a global CDN, cutting average response time by ~30% and improving app load performance for international users
    • Delivered core mobile features for the Vacation business unit, increasing daily active usage by ~15% and supporting seasonal revenue growth
    ReactNative Fastlane redux Datadog Sentry
  • PayBack
    Software Engineer
    HUMAN RESOURCES
    October 2024 - December 2024 (2 months)
    Paris, France
    • Optimized app performance, reducing interaction response time from 1–2 seconds to ~200–300ms, significantly improving user experience
    • Researched and defined a unified UI design system for web and mobile, ensuring consistent brand identity and faster development cycles
    • Implemented backend event-driven features, enabling real-time updates and improving system scalability
    React Native Next.js Node.js Temporal GraphQL
  • Jellysmack
    Senior Software Engineer
    SOCIAL NETWORKS
    March 2022 - February 2025 (2 years and 11 months)
    Paris, France
    • Built internal web apps (login system and dashboards) to manage loan offers for creators, streamlining operations and reducing manual workload by ~25%
    • Developed creator-facing web apps with authentication and digital contract signing, accelerating partnership onboarding by ~40%
    • Designed and delivered a mobile app with a modern UI/UX that enabled users to seamlessly repost social media content across platforms, boosting cross-platform reach
    React Native Next.js Terraform Datadog Fastlane

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