Software Engineer - Front-End - Japan (Remote)

Qompyl is an early-stage fintech startup building a mobile-first, hands-on, visual, and gamified strategy builder that empowers traders to create and refine trading strategies with ease. Our goal is to make advanced financial tools simple, intuitive, and accessible — closing the gap between complex market data and real decision-making.

We are a global, async-first, part-time team that values autonomy, clarity, collaboration, and thoughtful communication.

Learn more at qompyl.com

We are looking for a Software Engineer – Front-End based in Japan to contribute to the development of a mobile-first trading platform.

This role focuses on building intuitive, high-quality user interfaces and collaborating with a global team to deliver a reliable and scalable product.

• Develop and maintain front-end applications using React and TypeScript

• Build responsive, mobile-first interfaces for web and mobile platforms

• Integrate front-end components with REST APIs and WebSocket services

• Collaborate with backend engineers working with FastAPI-based systems

• Implement state management solutions (Redux, Zustand, or similar)

• Create data visualizations using tools such as D3.js or Chart.js

• Ensure performance optimization for real-time data and large datasets

• Translate Figma designs into functional UI components

• Write and maintain front-end tests (Jest, React Testing Library)

• Maintain clean and well-documented code using Git

• Experience with React and TypeScript

• Strong knowledge of HTML, CSS, and responsive design

• Experience working with APIs and real-time data

• Familiarity with modern front-end development practices

• Experience with version control (Git / GitHub)

• Ability to work independently in a remote, distributed team

• Professional working proficiency in English

• Experience with React Native

• Understanding of mobile performance optimization

• Familiarity with app deployment standards (App Store / Google Play)

• Experience with UI tools such as Figma

• Interest in building interactive or data-driven interfaces

This is a part-time, equity-only role, suitable as a side engagement alongside a primary job or consulting work.

The position will transition to compensated status after the MVP launch and once funding or sustainable revenue is secured.

If you're excited about joining an early-stage mission-driven startup and helping build a next-generation trading platform, we’d love to hear from you.