Senior Frontend Engineer

All open roles Engineering Senior Frontend Engineer Tokyo Full-time Hybrid About The Role Senior frontend engineer who will own core product surfaces of Jinba's workflow automation platform. You'll build the interfaces where enterprise users create, visualize, and manage complex automations through natural language. This role is for someone who thrives on hard UI problems: real-time collaboration, canvas-based editors, and making AI feel predictable and trustworthy. Responsibilities Build and own major product surfaces: workflow editor, execution monitoring, integration configurationArchitect frontend systems that scale with product complexity and team growthImplement complex interactions: drag-and-drop, canvas manipulation, real-time updatesCollaborate with design to ship polished, production-ready interfacesImprove developer experience: component patterns, testing strategies, build performanceMentor engineers and establish frontend best practices as the team grows Requirements Technical Skills 5+ years of frontend engineering experienceExpert-level React and TypeScriptDeep understanding of state management patterns and when to apply themExperience with complex UI: canvas editors, rich text, drag-and-drop, or similarStrong CSS fundamentals; comfortable with Tailwind and modern styling approaches Systems Thinking Ability to architect frontend codebases that remain maintainable as they growExperience with performance optimization: bundle size, rendering, perceived latencyUnderstanding of accessibility standards and how to implement them practicallyFamiliarity with testing strategies for complex interactive UIs Product Sense Experience building developer tools, no-code platforms, or workflow productsAbility to make technical decisions that improve user experience, not just code qualityComfort working directly with customers to understand pain points Strong Signals Frontend or full-stack roles at companies like Figma, Linear, Notion, Retool, Vercel, or similarExperience building canvas-based or node-graph editorsContributed to or maintained open-source component librariesBackground at early-stage startups where you owned entire product surfacesExperience with real-time collaboration features (CRDTs, operational transforms, or WebSocket-heavy UIs) Mindset Ownership-oriented: you want to own outcomes, not just ship ticketsQuality bar: you care about polish, edge cases, and the details users noticeEarly-stage ready: comfortable with ambiguity and rapid iteration About Jinba We help large enterprises build automated workflows using plain English. Unlike traditional no-code tools that bolt a chat agent onto their interface, Jinba is built as a native vibe coding platform from the ground up. YC W26. International team across SF and Tokyo. Growing fast with major enterprise contracts. Location Tokyo Team Engineering Employment Full-time Work style Hybrid Compensation ¥10M – ¥15M, Offers Equity Apply You are applying for Senior Frontend Engineer Website Full name * Email * Resume / CV * PDF, DOC or DOCX, up to 10 MB LinkedIn Portfolio or GitHub Anything you'd like us to know By submitting, you agree to our Privacy Policy. We use what you send to consider your application. Something went wrong. Please try again in a moment. Application received Thanks for applying. We read every application and will be in touch by email.