Our client is an ambitious deep-tech startup building a novel, natively agentic graph-neuro-symbolic AI system with general capabilities. Unlike most companies in the AI space, they are not building on top of existing ML architectures - the team conducts original research into alternative and often overlooked approaches to artificial intelligence, with a genuine commitment to AI safety and alignment.
Key Responsibilities:
Design, develop, and maintain high-quality, scalable, and performant user interfaces using Vue.js
Translate complex user workflows and product requirements into intuitive, accessible UI with a considered approach to visual design and UX
Collaborate closely with backend engineers, product managers, and designers to deliver responsive and coherent user experiences
Build reusable UI components and improve frontend best practices, coding standards, and architectural guidelines
Contribute to full-stack development efforts involving Rust and Python services where appropriate
Optimize application performance, accessibility, and cross-browser compatibility
Participate in technical design discussions, code reviews, and mentoring of junior engineers
Take ownership of features from concept through production deployment and ongoing maintenance
Requirements:
5+ years of professional frontend development experience, with proven expertise in Vue.js or comparable component-based JavaScript/TypeScript frameworks
Solid command of HTML5, CSS3, responsive design, and frontend architecture principles
Experience integrating RESTful APIs and working alongside backend systems; exposure to Rust and/or Python is a plus
Hands-on experience with CI/CD pipelines (e.g. GitHub Actions) and containerized development environments
Ability to design and improve user workflows supported by web-based tools
Familiarity with UI design principles
Experience mentoring engineers or leading frontend initiatives is highly desirable
Nice to Have:
Experience with hardware-accelerated frontend technologies such as WebGL
Familiarity with Rust and Python backend ecosystems
Experience with frontend performance optimization and accessibility standards
Experience with cloud infrastructure and DevOps practices
Understanding of secure web application development principles
Open-source contributions or involvement in technical communities
Employment Conditions:
Salary: 14-17M JPY per year + stock options
Schedule: Flexible outside of scheduled team meetings - results-oriented, no micromanagement
Paid time off: Up to 25 days per year + Japanese national holidays + year-end/New Year holidays
Social security: Full Japanese social security coverage (health insurance, pension, employment insurance)
Parental leave: Maternity and childcare leave available
Relocation: Visa sponsorship provided
Commute: Monthly commute expenses covered
Language support: Compensation for English and Japanese language training
Medical: Additional medical cost compensation + yearly health checkup