Engineering · Full-time · Roppongi Hills Mori Tower, Minato-ku, Tokyo. Full-time on-site at our Roppongi office. Working hours are fully flexible, but some meetings require attendance, such as the daily 7:30 a.m. team meeting. Partial remote work can be discussed for childcare or family-care needs.
Senior Frontend Engineer
Elevate the everyday experience of the tools maritime pros rely on — from design through implementation.
- TypeScript
- React
- Next.js
- TailwindCSS
What you'll do
- Frontend development for Noahlogy products (Noah, etc.) with React / Next.js
- Building data-visualization features (Chart.js, etc.)
- Improving UI/UX and running usability testing
- Building and maintaining the component library (Storybook)
- Writing tests (Jest, Playwright)
- Performance optimization and accessibility
Must-haves
- Professional experience with TypeScript, React, Next.js (3+ years preferred)
- Modern frontend experience (component design, state management, etc.)
- Understanding and hands-on experience with UI/UX design
- Experience with test-driven development (TDD)
- Team development with Git / GitHub
- Communication skills and teamwork
- A track record of going further than most people would, and the ability to explain the circumstances and your own decisions concretely (any field)
- Experience seeing something through in an unreasonable situation, or breaking through after being turned down repeatedly
- Experience building trust single-handedly with a first-time client or a senior counterpart on site
- Experience owning one client or project end to end as the person responsible
- Concrete examples of building tools or automation to spare yourself repetitive work, of fixing slowness or defects you could not leave alone, and of producing work you are proud to show others
Nice to have
- Experience with data-viz libraries (Chart.js, D3.js, etc.)
- Component development with Storybook
- E2E testing (Playwright, Cypress, etc.)
- Understanding of accessibility (WCAG)
- Performance optimization experience
- Experience building design systems
Our strengths
- Industry focus — all-in on shipbuilding, compounding deep domain knowledge
- AI-agent native — built for real-world adoption, not PoC theater
- Speed & flexibility — a startup's agility and execution
- Social impact — solving skill succession × shorter build times
Who we're looking for
- Well-versed in modern frontend tech, building with a focus on user experience
- Passionate about visualizing a complex domain like maritime clearly
- Values collaboration with strong communication skills
- Proactive about adopting new tech and tools, with a drive to keep learning
- Ready to bring creative, flexible thinking to a young team (avg. age 22)
- Someone who has an episode in their life that most people would not go through. Any field.
- Someone who has seen things through in unreasonable situations, or broken through after being turned down repeatedly
- Someone who cannot leave repetitive chores, slowness, or work they are not proud of alone (the three virtues of a programmer)
Terms & employment
Full-time (3-month probation). Full flextime / remote OK. Location: Roppongi Hills Mori Tower, Minato-ku, Tokyo. Full-time on-site at our Roppongi office. Working hours are fully flexible, but some meetings require attendance, such as the daily 7:30 a.m. team meeting. Partial remote work can be discussed for childcare or family-care needs. (relocating near Ōmori in 2027). Stock options available.
Why this role
Shape the foundations of an early-stage product from the design up — and redraw the experience of a massive industry across the design/engineering line.
Let's just talk first.
We start with a casual chat, not a formal screening. Reach out if this role interests you.
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