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Front-end focused software engineer with 4 years of professional experience specializing in React, Next.js, and TypeScript. Experienced in modern component architecture, UI/UX optimization, and migrating applications to scalable Next.js frameworks. Strong background cleaning up legacy codebases, resolving responsive design issues, and delivering polished, high-performance web applications. Also builds GenAI-powered chat/agent workflows (RAG, vector search) and connects front-end apps with backend APIs.…Front-end focused software engineer with 4 years of professional experience specializing in React, Next.js, and TypeScript. Experienced in modern component architecture, UI/UX optimization, and migrating applications to scalable Next.js frameworks. Strong background cleaning up legacy codebases, resolving responsive design issues, and delivering polished, high-performance web applications. Also builds GenAI-powered chat/agent workflows (RAG, vector search) and connects front-end apps with backend APIs.

Mai Shimizu

Front-End Developer, Web Developer, Full Stack Developer, +3

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Front-end focused software engineer with 4 years of professional experience specializing in React, Next.js, and TypeScript. Experienced in modern component architecture, UI/UX optimization, and migrating applications to scalable Next.js frameworks. Strong background cleaning up legacy codebases, resolving responsive design issues, and delivering polished, high-performance web applications. Also builds GenAI-powered chat/agent workflows (RAG, vector search) and connects front-end apps with backend APIs.…Front-end focused software engineer with 4 years of professional experience specializing in React, Next.js, and TypeScript. Experienced in modern component architecture, UI/UX optimization, and migrating applications to scalable Next.js frameworks. Strong background cleaning up legacy codebases, resolving responsive design issues, and delivering polished, high-performance web applications. Also builds GenAI-powered chat/agent workflows (RAG, vector search) and connects front-end apps with backend APIs.

Available to hire

Front-end focused software engineer with 4 years of professional experience specializing in React, Next.js, and TypeScript. Experienced in modern component architecture, UI/UX optimization, and migrating applications to scalable Next.js frameworks.

Strong background cleaning up legacy codebases, resolving responsive design issues, and delivering polished, high-performance web applications. Also builds GenAI-powered chat/agent workflows (RAG, vector search) and connects front-end apps with backend APIs.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Japanese

Fluent

Work Experience

Front-end Engineer & UI/UX Lead at Aisin Corporation

August 1, 2025 - April 30, 2026

Led UI/UX design and front-end implementation of a mission-critical internal talent management and e-learning platform for 4,000–6,000 active employees using React, Next.js, and TypeScript. Owned the platform rendering strategy, driving a hybrid SSR/SSG architecture to improve initial page load speed and reduce client-to-backend round trips. Bridged HR executives and engineering teams by gathering requirements, defining functional specifications, and translating ambiguous business problems into a coherent product and technical roadmap. Designed an enterprise-grade component library and full design system in Figma, establishing front-end UI standards across the engineering team. Coordinated delivery timelines and priorities across HR stakeholders and developers, taking on project-management responsibilities alongside hands-on front-end engineering.

Senior Frontend/Web Engineer at AISIN Corporation, Japan

August 1, 2025 - April 1, 2026

Led the frontend architecture and implementation of a mission-critical internal talent management and e-learning platform, scaling to 4,000–6,000 active employees. Leveraged Next.js, TypeScript, and Node.js to deliver a robust, scalable solution. Owned technical decision-making for the platform’s rendering strategy, driving a hybrid SSR + CSR architecture to maximize initial page-load speed and minimize client-to-backend round trips. Defined comprehensive technical and functional requirements by partnering with HR executives and engineering stakeholders, translating ambiguous business problems into robust technical strategies. Designed enterprise-grade component libraries in Figma and established frontend UI in one month.

Front-end Engineer (AI & Web Platform) at Woven by Toyota

August 1, 2022 - July 31, 2025

Engineered and scaled a high-performance React/Next.js portal for internal stakeholders and global innovators, focusing on UI performance optimization, clean architecture, and rigorous peer code reviews. Architected and deployed a production-grade GenAI chatbot using LangChain and Qdrant vector databases, implementing RAG workflows for accurate context-aware internal knowledge discovery. Built and maintained backend-for-frontend services with Node.js/Express to bridge front-end applications with internal APIs and the AI pipeline. Collaborated daily in 100% English within a fast-paced multinational Agile/Scrum team, participating in code reviews and helping define front-end coding standards.

Frontend Engineer (AI & Web Platform) at Woven by Toyota, Japan

August 1, 2022 - July 1, 2025

Engineered and scaled a high-performance React/Next.js portal for internal stakeholders and global innovators, focusing heavily on UI performance optimization and core web vitals. Architected and deployed a production-grade GenAI chatbot using LangChain and Qdrant vector database, implementing robust RAG-based search workflows that transformed internal document discovery. Drove iterative performance enhancements and web resilience practices based on data-driven observability and user feedback, ensuring an instant-loading user experience across diverse devices, reducing internal document discovery time by approximately 30%. Collaborated daily in English with a fast-paced, multinational Agile/Scrum team, actively participating in code reviews and defining frontend coding standards.

Administration Assistant at Aisin Corporation

April 1, 2019 - July 31, 2022

Automated complex data-reporting workflows using Excel VBA, eliminating 50% of manual processing time and improving data reliability. Facilitated data-driven, cross-functional cost-reduction initiatives by bridging engineering data with commercial procurement metrics.