Kimoto Hisao

Available to hire

Experienced Frontend Developer with over 8 years of delivering high-performance, user-focused web applications.

About

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.

  • Joined September 2025

Languages

  • EnglishFluent

Industry experience

  • Software & Internet
  • Financial Services
  • Media & Entertainment
  • Professional Services
  • Other
  • Gaming

More experts in Keila, Estonia

Projects · 6

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.

https://www.twine.net/signin

BravoJeweller
  • Web Developer

AI-Driven Sustainability & Carbon Footprint Optimization
for Industrial Applications Real-Time Tracking, Predictive Control, & Automation

Are2Pure
  • Front-End Developer

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

Zaros
  • Blockchain Developer

Educational platform in Germany (VueJS + Laravel) with document metrics recognition and internal bonus currency. 28,000 users, €100K/month revenue. Complete educational functionality with Stripe & PayPal integration.

https://www.twine.net/signin

Bestellung
  • Back-End Developer
  • Front-End Developer

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

Soundmint
  • Blockchain Developer
  • Full Stack Developer

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

AT Realty
  • Web Developer

Work experience· 4 roles

Senior Frontend Developer · Denmark AirJan 2025 – Present · 1 yr 11 mos

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 · US SoundMintMar 2022 – Present · 4 yrs 9 mos

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 · Japan AdventureSep 2021 – Present · 5 yrs 3 mos

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 · Japan (Self-Employed)Dec 2016 – Present · 10 yrs

Education

Bachelor of Computer Science · Nagoya University2011 – 2015

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