Front-end Engineer Job at preferable.ai, 東京都

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  • preferable.ai
  • 東京都

Job Description

This is a remote position.

Job title: Front-end Engineer Location: Fully Remote

Terms: Permanent, Working Hours: Full-time from 10:00 AM to 7:00 PM.

Required Skills: ❖ 3+ years of experience in front-end development using React and TypeScript

❖ Deep expertise in state management, rendering performance, and API design.

About us: Company develops and offers "Re:Earth," a next-generation open-source Web GIS

(Geographic Information System) platform equipped with high scalability and an intuitive

user interface. As the first Web GIS to feature a browser-operated plugin system, Re:Earth

is also publicly available as open-source software. Company aim to create significant value

in collaboration with our contributors and share our developments broadly, showcasing our

work at global conferences such as FOSS4G.

About the role:

【Responsibilities】

❖ Lead the architectural design and reconstruction of a front-end OSS library

❖ Redesign interfaces with attention to integration with existing systems

❖ Visualize and break down technical debt, and drive incremental refactoring

❖ Establish QA processes such as regression testing to enable early bug detection

❖ Develop reusable modules with a focus on performance and scalability

❖ Organize and redefine 3D/2D rendering features

❖ Maintain and improve technical documentation

❖ Contribute to the OSS community, including managing PRs and issues

【Tech Stack】

❖ Languages: TypeScript, JavaScript, Go, Rust

❖ Libraries / Frameworks: React, Cesium

❖ Testing: Vitest, Playwright, WebGL, WebAssembly

❖ Others: GitHub, Notion, Slack, Figma, various AI tools

Welcome Skills: ❖ Experience contributing to or maintaining open-source software (OSS)

❖ Rendering experience using WebGL, WebGPU, or Three.js

❖ Experience with Rust and WebAssembly for low-level, performance-oriented

development

❖ Designing interfaces between multiple engines and maintaining related documentation

❖ Experience with OSS activities and sharing technical knowledge with others

❖ Involvement in projects focused on managing and resolving technical debt

What we’re

looking for

❖ Someone who can go beyond simple replacement and understand the reasoning behind

the current architecture, while also envisioning its future form

❖ Someone who feels a sense of responsibility and fulfillment in redesigning core

technologies

❖ Someone who grows alongside the team and helps build a sustainable foundation, both

in terms of code and shared knowledge

Salary/rate: ❖ Annual Salary: 7,200,000 JPY to 9,000,000 JPY.


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