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Registration: 01.05.2025

Nakamura Sakura

Specialization: Full Stack Web Developer
— Senior Full Stack Developer with over 10 years of experience in game development and the online gambling industry, specializing in scalable platforms, real-time data processing, and secure in-game transactions. — With expertise in full-stack development and backend architecture, he delivers high-impact solutions in fast-paced settings, continuously optimizing processes from concept to deployment. — Skilled inNode.js, Next.js, Vue.js, Nuxt.js, Node.js, Nest.js, and AWS, I consistently elevates user engagement and operational efficiency while aligning technical solutions with business goals.
— Senior Full Stack Developer with over 10 years of experience in game development and the online gambling industry, specializing in scalable platforms, real-time data processing, and secure in-game transactions. — With expertise in full-stack development and backend architecture, he delivers high-impact solutions in fast-paced settings, continuously optimizing processes from concept to deployment. — Skilled inNode.js, Next.js, Vue.js, Nuxt.js, Node.js, Nest.js, and AWS, I consistently elevates user engagement and operational efficiency while aligning technical solutions with business goals.

Portfolio

Openpixee

● Utilized JavaScript and TypeScript to develop a scalable CLI tool for NoCode services, adhering to best practices for efficiency across various development environments for B2B clients. ● Developed the CLI tool using Babel to analyze JavaScript/TypeScript code for vulnerabilities, achieving 99.5% coverage through rigorous debugging and comprehensive code review processes. ● Delivered 28 pages of detailed documentation on Notion, Google Workspace, and Miro, presenting it to customers for effective onboarding and knowledge sharing. ● Identified security issues and inefficiencies, recommending and implementing alternatives to enhance code quality and performance.

Kenzen

● Kenzen provide this Privacy Policy so that all users of our Services understand how we collect, use, and share the information collected through our Services and what information we share with other third-parties and partners with whom we conduct business (“Partners”). ● Kenzen provides the Services on behalf of itself and usually at the request of your employer. ● You should consult any privacy notices or guidelines provided by your employer to understand how your employer uses and discloses information collected through Kenzen’s Services. ● Kenzen is not responsible for how your employer collects and processes Personal Data.

Coolmathgames Hangma

● Developed an interactive, educational multiplayer game with a focus on game animations using Pixi.js for an enhanced user experience, helping children improve their English vocabulary through a gamified interface. ● Designed a robust and scalable infrastructure to support 10K+ concurrent players, optimizing performance and security using Nginx, AWS CloudFormation, and CI/CD pipelines. ● Integrated RESTful APIs and refactored the front-end using TypeScript to improve maintainability and reduce development time. ● Collaborated with designers and animators to ensure smooth transitions and engaging gameplay across mobile, tablet, and desktop platforms.

Skills

React.js
Next.js
Vue.js
Nuxt.js
Node.js
Nest.js
Laravel
Java Spring
JavaScript
TypeScript
CSS
HTML

Work experience

Full Stack Developer
since 09.2020 - Till the present day |Coolmath
RESTful APIs, Git, GitHub, AWS, Nginx, Pixi.js, React, Node.js
● Developed interactive, educational multiplayer games like Hangman and Rock-Paper-Scissors, using Node and React to create engaging learning experiences for students. ● Integrated Colyseus WebSocket for real-time communication, ensuring seamless gameplay and engagement for thousands of concurrent users. ● Leveraged Pixi.js to create visually engaging animations, enhancing both playability and educational retention. ● Deployed AWS and Nginx to support high traffic for online learning tools, achieving 99.9% uptime during peak usage by educators and students. ● Implemented RESTful APIs, optimizing response times by 30%, enhancing user interactions with learning games. ● Optimized game infrastructure with caching and load-balancing, enabling rapid scaling to accommodate large online classrooms and student groups. ● Built reusable UI components to accelerate development of future educational games and digital learning tools. ● Used Git and GitHub for efficient version control, enhancing collaboration across development and educational content teams. ● Coordinated with design and education departments to maintain consistent UI/UX aligned with educational standards. ● Led user feedback sessions, refining game mechanics based on insights to better serve the learning objectives of students.
Backend Developer
10.2018 - 09.2020 |Pixee
Node.js, Java, JavaScript, React
● Developed a Node-based CLI tool to detect vulnerabilities in Java and JavaScript, enhancing security across client codebases. ● Implemented Babel Traverse and Parser for code analysis, providing actionable insights to developers. ● Integrated Mocha and Chai for rigorous unit testing, achieving 98% test coverage. ● Optimized performance by reducing code redundancy, improving analysis speed by 20%. ● Packaged the tool as a CLI, enabling user-friendly access and integration across systems. ● Documented the CLI’s functionality, creating onboarding resources to expedite team training. ● Partnered with cross-functional teams to integrate security tools into workflows.
Backend Developer
01.2017 - 09.2018 |Newnew
Node.js, Java, JavaScript, React, AWS, TypeORM
● Built robust backend infrastructure for an auction app, integrating Stripe for secure payment processing. ● Migrated streaming workflows from ffmpeg to AWS Elemental MediaConvert, optimizing both video quality and processing speed. ● Leveraged AWS ECS for automated autoscaling based on traffic, maintaining stability during peak usage periods. ● Utilized TypeORM for efficient database operations, streamlining data management and query response times. ● Automated deployment processes to production, reducing downtime during essential updates. ● Enhanced backend system monitoring with AWS CloudWatch, ensuring real-time performance reliability. ● Collaborated with frontend development teams to ensure seamless integration across the app interface. ● Designed a strategic caching system to reduce database load, improving retrieval speeds and overall performance. ● Conducted comprehensive security audits, identifying and addressing vulnerabilities to enhance data protection.

Educational background

Computer Engineering (Bachelor’s Degree)
2011 - 2014
Graduate School of Engineering Science
Computer Science (Masters Degree)
2007 - 2011
Osaka University

Languages

JapaneseNativeEnglishUpper Intermediate