Senior Frontend Engineer

Noeon Research Minato-ku, Tokyo June 10 2026
  • 💴 ¥14M ~ ¥17M annually
  • 🏡
    Partially remote
  • 🌏
    Apply from abroad
    Relocate to Japan
  • 💬
    No Japanese required
    Business English
  • 🧪
    Senior level
    5+ years experience required
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About Noeon Research

Noeon Research Minato-ku, Tokyo

Noeon Research is an ambitious deep-tech startup working on a novel natively agentic graph-neuro-symbolic system with general capabilities. We are an international 30-people team with headquarters in Tokyo, Japan.

Key benefits

  • Competitive salary
  • Flexible schedule
  • High autonomy

About the position

We are looking for an aspiring professional to join our RnD team.

Responsibilities

  • Design, develop, and maintain high-quality, scalable, and performant user interfaces using Vue.js.

  • Translate user workflows and product requirements into intuitive, accessible UI — with a strong sense for visual design and UX.

  • Collaborate closely with backend engineers, product managers, and designers to deliver intuitive and responsive 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.

  • Work effectively in a fast-paced, collaborative, and international engineering environment.

Requirements

Experience

  • 5+ years of professional software engineering experience with a strong focus on frontend development.
  • Proven experience building modern web applications in frameworks such as using Vue.js.
  • Experience collaborating with cross-functional teams in agile development environments.
  • Familiarity with backend systems and APIs, ideally with exposure to Rust and/or Python.
  • Experience shipping production-grade applications with strong attention to usability, maintainability, and performance.
  • Experience working with CI/CD pipelines and containerized development environments.

Technical Skills

  • Strong proficiency in developing with modern component-based JavaScript/TypeScript libraries such as Vue.js
  • Solid understanding of HTML5, CSS3, responsive design, and frontend architecture.
  • Experience integrating RESTful APIs and backend services.
  • Hands-on experience with GitHub Actions or similar CI/CD platforms.
  • Strong understanding of software engineering best practices, testing methodologies, and code quality standards.
  • Familiarity with Git and collaborative development workflows.
  • Ability to design, understand, and improve user workflow supported by web-based tools.
  • Familiarity with UI design principles.

Educational Background

Degrees in Software Engineering, Computer Science, Mathematics, or a related technical discipline.

Soft Skills

  • Proactive mindset to stay updated with the latest advancements in AI.
  • Fluent in conversational and written business English (C1+).
  • Ability to work collaboratively in cross-functional teams.
  • Experience working using Agile framework.

Personal Qualities

  • Individual responsibility. You respect key deadlines and pass on the results of your work to your teammates in an appropriate condition.
  • Lifelong learning. You recognize areas for growth and proactively learn new skills for your current and prospective areas of responsibility.
  • Vision & planning. You can plan your work several weeks ahead and can juggle multiple projects at once. You know when to postpone a task.
  • Thoroughness. You cover every important aspect of your task leaving out no crucial detail.
  • Proactiveness and initiative. You offer help if you have spare capacity. You take initiative and pitch your own projects to others.
  • Critical thinking. You question every judgement, claim or number and can engage in a healthy debate with your teammates.
  • Dynamic, out-of-the-box mindset. You can challenge existing ways, abandon well-trodden paths and embrace the new.

Nice to haves

While not specifically required, tell us if you have any of the following.

  • Prior experience mentoring engineers or leading frontend initiatives is highly desirable.
  • Experience with hardware accelerated frontend technologies such as WebGL.
  • Familiarity with Rust and Python backend ecosystems.
  • Knowledge of modern web UI frameworks and component libraries.
  • 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.
  • Work experience in startups.

Compensation

¥14,000,000 ~ ¥17,000,000 annually.

Hiring Process

  1. 1

    Initial Screening Interview (45 minutes)

    With either CHRO or Talent Specialist.

  2. 2

    Test Assignment

    This mandatory assignment takes up to 8 hours to complete, within 7 days from the start, and is unpaid.

  3. 3

    Technical Interview with our Lead Frontend Developer and Tech Lead (1 hour)

    To discuss the test assignment, and check Hard Skills proficiency.

  4. 4

    Final interview with our Chief System Architect (1.5 hours)

    To check Hard Skills, competency, general awareness and interest in the AI industry.

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