Yonathan Evan Christy

Yonathan Evan Christy

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Fullstack Engineer who focus on the best User Experiences and Growth
Jakarta, Indonesia
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Résumé

Jobs verified_user 0% verified
  • UPWORK FREELANCER
    Freelance Tech Consultant
    UPWORK FREELANCER
    Jan 2023 - Current (3 years 6 months)
    As a Freelance Tech Consultant, I have successfully built WPoptic using Typescript, FastAPI, PostgreSQL, and NGINX, scaling the platform to over 500 users within just one month. I significantly improved load times from 3 seconds to 1.5 seconds and doubled user retention by migrating over 500 pages of WordPress to Nuxt.js and Storybook. Additionally, I shipped a Rust smart contract that reduced presale development costs by 80% (from $10K to $2K) and delivered optimized Webflow sites, accelerating client MVP launches. My experience in AI product development has enabled me to create faster MVPs, and I have gained foundational knowledge in Flutter, which I can leverage for future projects. Furthermore, I am prepared to adapt to Scala as needed,
  • Expensify
    Open Source Contributor
    Expensify
    Jan 2023 - Sep 2024 (1 year 9 months)
    • Built help page search feature, boosting user retention by 15%. • Eliminated 50+ code duplications by implementing a custom ESLint rule to detect redundant withOnyx usage. • Resolved key UI bugs in all platform UI (Mobile - Desktop) error messages, save button, and offline rendering using React Native + Expo.
  • G
    Founder and Tech Consultant
    GIC Tech
    Sep 2020 - Dec 2022 (2 years 4 months)
    As the Founder and Tech Consultant, I successfully launched multiple NFT projects, achieving a remarkable 50% reduction in development costs (from $5K to $2K) by leveraging technologies such as React, Candy Machine, and @solana/web3.js. I delivered the Verdant Vtopia staking platform just three days after the NFT launch, significantly ahead of the planned two-week schedule, which resulted in an 80% decrease in development costs (from $8K to $1.6K). Additionally, I provided strategic advice to indie NFT teams on low-cost launch strategies, enabling them to save 50% compared to market rates. Furthermore, I utilized my experience with Nuxt to migrate a WordPress site to Storyblok, enhancing the frontend capabilities and ensuring a more efficie
  • N
    Fullstack Engineer
    Neliti
    Dec 2019 - Aug 2020 (9 months)
    • Built a custom web builder (WordPress-like), doubling MAU and time spent on site. • Cut deployment errors from 3% to 1% using BrowserStack for visual regression testing and daily QA reporting.
  • D
    UI/UX & Product Engineer
    Deeptech
    Jun 2019 - Oct 2019 (5 months)
    • Designed and shipped partner sites end-to-end using Figma + React, helping surpass 2x user target and drive 50% revenue growth. • Led product ideation and UI design for B2B clients, improving delivery speed and stakeholder satisfaction.
Education verified_user 0% verified
  • I
    Digital Design
    International Design School Jakarta
    Aug 2016 - Oct 2020 (4 years 3 months)
Projects (professional or personal) verified_user 0% verified
  • S
    Solana Copy Trade Bot & ReloadSOL
    May 2024 - Current (2 years 2 months)
    • Built a personal auto-trading bot on Solana using solana/web3.js and the Telegram API, enhancing trading efficiency and user engagement. • Launched ReloadSOL, a recovery and swap tool, successfully growing the user base to 1.2k within just over a month. Additionally, I applied AI product development skills by creating a simple machine learning algorithm to identify potential tokens for purchase, which contributed to informed trading decisions and further attracted users to the platform.