Experienced Frontend Developer with over 8 years of delivering high-performance, user-focused web applications. Proficient in modern frameworks like React.js, Angular, and UI libraries such as TailwindCSS and Bootstrap, I specialize in creating responsive, accessible, and scalable interfaces. Proven track record of improving user satisfaction by 20%, optimizing load times, and collaborating with cross-functional teams to align development with business objectives. Strong advocate for clean code, performance tuning, and pixel-perfect design implementation.

Kimoto Hisao

PRO

Experienced Frontend Developer with over 8 years of delivering high-performance, user-focused web applications. Proficient in modern frameworks like React.js, Angular, and UI libraries such as TailwindCSS and Bootstrap, I specialize in creating responsive, accessible, and scalable interfaces. Proven track record of improving user satisfaction by 20%, optimizing load times, and collaborating with cross-functional teams to align development with business objectives. Strong advocate for clean code, performance tuning, and pixel-perfect design implementation.

Available to hire

Experienced Frontend Developer with over 8 years of delivering high-performance, user-focused web applications.
Proficient in modern frameworks like React.js, Angular, and UI libraries such as TailwindCSS and Bootstrap, I specialize in creating responsive, accessible, and scalable interfaces.
Proven track record of improving user satisfaction by 20%, optimizing load
times, and collaborating with cross-functional teams to align development with business objectives.
Strong advocate for clean code, performance tuning, and pixel-perfect design implementation.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Expert
Expert
Intermediate
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Language

English
Fluent

Work Experience

Senior Frontend Developer at Denmark Air
January 1, 2025 - Present
Remote development of MQTT-based communication protocols for IoT-enabled air purification devices; built features for a dashboard using React and Tailwind CSS; optimized performance, reduced data transmission errors; collaborated with a team of engineers; implemented automated tests and ensured accessible/mobile-friendly designs.
Senior Frontend Developer at US SoundMint
March 20, 2022 - Present
Developed performant web interfaces with React.js, Next.js, and Tailwind CSS; integrated frontend components with Node.js APIs; improved SSR and load times; led frontend testing with Jest and API tests with Postman; delivered accessible and mobile-friendly designs; collaborated with UI/UX teams.
Mid Frontend Developer at Japan Adventure
September 1, 2021 - Present
Onsite contributed to booking platform frontend using Vue.js and React; supported over 7 million users monthly; integrated RESTful APIs with complex UI states and booking logic; improved delivery speed and collaborated with backend and QA teams across time zones.
Junior Web Developer at Japan (Self-Employed)
December 1, 2016 - Present
Freelance: Created responsive websites and admin panels using HTML, CSS, JavaScript, and PHP; integrated APIs and designed simple CMS tools to support small business operations; optimized site speed and mobile usability; maintained long-term client relationships with reliable delivery and ongoing support.

Education

Bachelor of Computer Science at Nagoya University
September 1, 2011 - September 1, 2015

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Media & Entertainment, Professional Services, Other, Gaming
    paper BravoJeweller

    Shopify-Project

    At Bravo Jewelers, we’re more than just a jewelry store – we’re a living testament to the artistry passed down through generations. Meet our founders, brothers Edward and Eugene Notovich, who proudly carry the torch as the third generation of jewelers in their family lineage.

    Our journey begins with a rich history of watchmakers and goldsmiths, with a father and even an uncle who shared the same passion. Crafting exquisite jewelry isn’t just a business for us; it’s a family tradition deeply woven into our DNA.

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    AI-Driven Sustainability & Carbon Footprint Optimization
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    paper Zaros

    Zaros is a Perpetuals DEX powered by Boosted (Re)Staking Vaults. Whether you’re a seasoned trader or new to the world of cryptocurrencies, Zaros is here to maximize your trading potential and enhance your yields on Arbitrum (and soon on Monad).

    Zaros connects Liquid Re(Staking) Tokens (LSTs & LRTs) with Perpetual Futures, offering opportunities to amplify your yield through our innovative ZLP Vaults. With the ability to trade with leverage of up to 100x, our platform empowers you to take control of your investments like never before.

    https://www.twine.net/signin

    paper Soundmint

    Optimized vault and position management logic, improving user deposit/withdraw throughput by ~ 30% and lowering gas usage on execution by ~ 25%.
    Coordinated with the backend team to develop reliable price feeds and accurate APR calculations, syncing with off-chain analytics for 3,000+ user positions.
    Audited and hardened logic that safeguarded ~ $2M+ in TVL, identifying and fixing 6 critical/major vulnerabilities including unsafe external calls and manipulation risk.
    Devised a secure slippage tolerance mechanism that mitigated loss scenarios during volatile market moves.
    Authored fuzz tests for liquidation, fee calculation, and user margin logic, increasing test coverage to 95%+ and surfacing 8 logic flaws

    paper AT Realty

    Full SaaS ecosystem for real estate (web, mobile app, CRM, Google Add-on). Built with ReactJS + Laravel. 25,000 users/month, $500K+ subscription revenue/month. Features: marketing campaigns, property management, deal processing, multi-listing on 30+ platforms. Integrations: Stripe, PayPal, 30+ external APIs.

    https://www.twine.net/signin