Oyama Ssekien
SUMMARY
Highly skilled and motivated web developer with over 7 years of experience. Strong background in web development
using modern JavaScript libraries such as React.js, Next.js, Node.js, and TypeScript, with a passion for creating
intuitive user interfaces. Proficient in AWS services, Web3 and CI/CD tools for deploying and managing web
applications in the cloud. Eager to learn and work with the latest technologies.
EXPERIENCE
ADDRESS
Aichi Prefecture, Nagoya City
PHONE
-
EMAIL-
SKILLS
● React.js
● Angular.js
● Vue.js
● Next.js
● Sass
● HTML5
● CSS3
● Bootstrap
● Chakra UI
● Ant design UI
● Tailwind CSS
● TypeScript
● JavaScript
● Node.js
● Express.js
● Fastify.js
● Nest.js
● GraphQL
● MongoDB
● MySQL
● Redux
● JQuery
● GitHub
● Figma Design
● Hosting
JULY 2021 - PRESENT
SENIOR FRONTEND ENGINEER, SEISHIN NETWORKS INC. – FUKUOKA
• Orchestrated the development of a visually captivating digital platform for
Final Chapter, focusing on the seamless presentation of comics, immersive
genre-based navigation, and an intuitive interface for readers and creators.
• Delivered high-performance and user-friendly interfaces using Typescript and
various frameworks that displayed real-time data and insights for electric
utilities and clients, resulting in a 40% increase in user satisfaction and
retention.
• Worked in an Agile environment using Scrum methodology and tools such as
Jira and Git.
• Skilled at identifying SaaS opportunities and delivering cloud-based
solutions that enhance operational efficiency and user experience.
• integrating blockchain protocols, designing toke nomics, and utilizing
decentralized networks.
• writing and deploying smart contracts using Solidity and Web3.js.
MARCH 2019 - MAY 2021
SENIOR FRONTEND ENGINEER, KUROTECH SOLUTIONS – OSAKA
• Developed web applications and APIs that serve over 10,000 customers and
process over 100,000 orders per month.
• Implemented a delivery tracking system utilizing advanced geolocation
technologies and methodologies, finding exact position sand reducing the time
of finding the nearest shop to customers by 20%.
• Built responsive websites for 10+ clients using semantic HTML5, JavaScript,
Typescript, React.js, and CSS.
• Collaborated with back-end developers to use GraphQL instead of RESTful
APIs, resulting in a 25% reduction in server response time.
• Building decentralized applications (dApps) using Ethereum, Solidity, and
smart contracts.
OCTOBER 2017 - DECEMBER 2019
FRONTEND WEB DEVELOPER, TSUKIYO SYSTEMS LTD. – SAITAMA
• Developed website with React.js, HTML5, CSS, JavaScript etc, resulting in a
25% reduction in page load speeds and conversion rates by utilizing modern web
technologies.
• Developed code that deals with large data sets by rendering components on UI
and optimizing calls to minimize HTTP requests by 80%.
• Collaborated with 10+ senior team members to upgrade the websites for
customers to catch up with changing industry standards
FEBRUARY 2017 - SEPTEMBER 2017
FRONTEND DEVELOPER INTERN
• Worked through the software development life cycle gathering user
requirements and building the code for the tool.
• Collaborated with in-house designers to redesign websites using HTML, CSS,
JavaScript, and jQuery making them responsive for mobile devices and
increasing customer engagement.
EDUCATION
August 2015 - August 2017 University of Tsukuba
Bachelor of Science in Software Engineering
