YUMA Kitamura

Application Developer & Engineering Manager

I'm a passionate application developer and engineering manager based in Japan, specializing in frontend development with React, Flutter, and DevOps.

ReactFlutterTypeScriptJavaScriptScalaJava
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YUMA Kitamura

About Me

Hello! I'm YUMA Kitamura, an application developer and engineering manager with over 8 years of experience in building modern web applications. I'm passionate about creating clean, efficient, and user-friendly interfaces.

Currently, I work as an Engineering Manager at wevnal inc., where I lead a team of talented developers in creating innovative solutions for our clients. I specialize in frontend development with React, Vue, and TypeScript, but I'm always eager to learn new technologies and frameworks.

When I'm not coding, I enjoy contributing to open-source projects, writing technical articles, and sharing my knowledge with the developer community. I also enthusiastically lead in organizing technical conferences (FlutterKaigi, Frontend Conference in Kansai region and etc).

Osaka, Japan
Available for freelance work
Engineering Manager at nekohack inc.

Skills & Technologies

Frontend

HTMLCSSJavaScriptTypeScriptReactVueSvelteObjective-CSwiftJavaKotlinDartFlutter

Backend

Node.jsExpressJavaScalaFirebaseSupabaseGraphQLREST APIMongoDBPostgreSQLAWSGCPNetlifyVercelCloudflare

Tools & Others

OpenAI (ChatGPT)Anthoropic (Claude)Google (Gemini)GitGitHubGitLabDockerCI/CDJestVitestTesting LibraryViteWebpackFigmaMiroAgileScrum

Work Experience

Application Developer

wevnal inc.2023 - Present

Leading a team of developers, establishing best practices, and ensuring code quality. Responsible for technical decision-making, mentoring junior developers, and collaborating with stakeholders to deliver high-quality web applications.

Team LeadershipScenario DevelopmentTechnical ArchitectureCode Reviews

Full-stack Developer

vcube inc.2021 - 2023

Developed and maintained complex web applications using AWS, React, and TypeScript. Collaborated with designers and backend developers to implement new features and improve existing ones. Participated in code reviews and mentored junior developers.

AWSReactTypeScriptFrontend Architecture

Full-stack Developer

smaregi inc.2019 - 2021

Developed and maintained complex web applications using AWS, Vue (React), and TypeScript. Collaborated with designers and backend developers to implement new features and improve existing ones. Participated in code reviews and mentored junior developers.

AWSVueReactTypeScriptAPI Architecture

Full-stack Developer

ponos inc.2016 - 2019

Built responsive website and web application for game title “battlecats” to develop admin screens and in-app browser, using HTML, CSS, JavaScript, and Vue. Worked with designers to implement pixel-perfect designs and ensure cross-browser compatibility. Ensure compatibility.

HTML/CSSJavaScriptVueJava/ScalaPHPResponsive Design

Featured Projects

Tracc

Tracc

Manage all your sponsorships on a single platform.

Tracc dramatically streamlines sponsor management for conference organizing teams. It frees you from complex administrative tasks, allowing you to focus on what truly matters.

FlutterDartFirebaseCloudflareReact (partially)Remix (partially)
Brand Website
Rocket Form

Rocket Form

Bot management tool

Rocket Form is a tool that streamlines bot management. It simplifies complex tasks, enabling you to focus on what truly matters.

Node.jsCloudflare
Commitment Board

Commitment Board

Commitment board website for some conferences.

A visual dashboard to align staff roles and weekly commitments.

Node.jsCloudflare
IMGO (Image Go)

IMGO (Image Go)

Image management and optimization tool.

A visual dashboard to manage and optimize images efficiently.

Node.jsCloudflareRustCloud Run
Multi Post Dash

Multi Post Dash

Posting dashboard for some SNS.

A dashboard to post on multiple social networking services.

Node.jsCloudflare
nekohack Portal

nekohack Portal

Company website for nekohack inc.

A modern, responsive website built with Next.js and Tailwind CSS. Features include a blog, team profiles, and a hub for social networking services.

Next.jsReactTailwind CSSv0

Latest Articles

Tech Blog

「フロントエンドカンファレンス関西 2025」開催報告

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Tech Blog

「フロントエンドカンファレンス関西 2025」 当日ボランティアスタッフ募集のご案内

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Tech Blog

「フロントエンドカンファレンス関西2025」のチケットを9月16日(火)に販売開始します

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