JIAN-JIA CIOU

Senior Frontend Engineer

New Taipei City, New Taipei City, Taiwan

About

I'm a front-end engineer from Taiwan. I am passionate about developing beautiful and easy-to-use applications.

Experience

  • Senior Frontend Engineer at IKG
    Jul 2025 - Present · 1 yr

    - Restructured the frontend project architecture and standardized build and CI/CD pipelines using pnpm, Turborepo, and Vite, improving maintainability and build reliability. - Defined performance budgets for FPS, INP, and power consumption across high-end and low-end devices, using baseline benchmarking and CPU throttling to prevent performance regression and ensure consistent user experience. - Identified runtime performance bottlenecks using browser performance profiling and reduced Interaction to Next Paint (INP) from ~1000ms to under 200ms under Chrome Performance CPU throttling (20× slowdown) by minimizing React re-renders and optimizing high-cost algorithms. - Customized automated GitHub pull request review workflows to control review triggers and reduce unnecessary reviews, lowering review-related operational costs. - Integrated Storybook into the Turborepo monorepo and evolved it into a shared UI playground, enabling designers to experiment with component parameters independently.

  • Frontend Engineer at 晶密股份有限公司
    Jun 2023 - Mar 2025 · 1 yr 10 mos

    Worked on developing the official website and a CMS for a language learning app, providing teachers with tools to edit course videos, lesson content, and level progression maps.

  • Senior Frontend Engineer at iStaging Corp. 愛實境_台灣
    Jul 2022 - Apr 2023 · 10 mos

    Maintained, refactored, and expanded features of the VR Maker/VR Viewer—including customized functions for brand clients like Yung Ching Realty, Louis Vuitton, YSL, Bulgari, and TAG Heuer—while optimizing image resources and loading methods to reduce load times.

  • Frontend Engineer at TravelSkope
    Nov 2020 - Apr 2022 · 1 yr 6 mos

    Developed multiple front-end and admin systems for Tigerair Taiwan, including an in-flight POS (built with Flutter), a membership platform with SSO integration, an e-commerce site for in-flight preorders, and a booking system—covering features like content management, shopping, and flight services.

  • Frontend Engineer at Newtype Games Limited
    Sep 2019 - Oct 2020 · 1 yr 2 mos

    Developed the ATFX exchange app with integrated KYC features such as OCR, facial recognition, and transfer functions. Built the front-end of a gaming platform for user registration, game downloads, and top-ups, with Matomo integration for analytics. Also developed the CMS using Strapi, enabling the marketing team to manage and update the game content efficiently.