Jinba

We're looking for a Chief of Staff to serve as a force multiplier for the CEO. This is a part-time contract role (at least 20 hours per week, with flexibility on scheduling) designed for someone who can move fluidly between strategy and execution. This isn't a "shadow the executive" role. You'll own real problems, make real decisions, and have direct impact on how the company scales. The position has a clear path to full-time conversion, with a mutual evaluation at the 3-month mark. The ideal candidate has the horsepower of a top-tier consultant, the scrappiness of an early startup employee, and the judgment to know when to ask questions versus when to just figure it out. Responsibilities Drive strategic planning: Own the quarterly planning process, track KPIs, and keep the company aligned on what matters. Fix what's broken: Identify bottlenecks in how we work, communicate, and ship. Implement solutions without waiting to be told. Lead cross-functional projects: Take ownership of high-priority initiatives that don't fit neatly into existing teams, whether that's analyzing a new market, coordinating a product launch, or preparing for a fundraise. Maximize the CEO's time: Manage priorities, prepare materials for board meetings and investor conversations, and handle external engagements. Support hiring and culture: Help recruit key roles and maintain a strong, unified culture across our SF and Tokyo teams. Build the information edge: Conduct research on competitors, market trends, and potential partnerships to inform decisions at the top. Responsibilities Experience 2+ years in a high-performance environment: top-tier management consulting, investment banking, or Chief of Staff at a high-growth startup. Track record of managing complex projects with multiple stakeholders and delivering under pressure. Exceptional communication skills. You can take messy information and turn it into a clear, concise narrative. Strong analytical and financial modeling skills. Native/Bilingual proficiency in English. Bonus Prior experience as a founder or early employee at a venture-backed startup. Mindset Ownership: You treat this like your company. You don't wait for permission to solve problems. Adaptability: You're comfortable with ambiguity and can pivot between strategic, financial, and operational challenges without losing momentum. Discretion: You'll have access to sensitive information. You operate with integrity and keep confidences.

Design engineer who owns the full visual and interactive experience of Jinba's platform. You'll build our design system from the ground up, create motion that makes complex workflows feel intuitive, and ship production code alongside the engineering team. This is a founding design role for someone who wants to shape how enterprise users interact with AI-native software. Responsibilities Design and build Jinba's design system: components, tokens, patterns, and documentation Own UI/UX for core product surfaces, from concept through implementation Create motion design that guides users through workflow creation and execution Write clean, maintainable frontend code (we use shadcn/ui and modern React patterns) Collaborate directly with engineering to ship features, not just hand off specs Establish design processes and standards as the first dedicated design hire Requirements Design Skills Strong product design sense with portfolio showing end-to-end ownership Experience building or significantly contributing to a design system Motion design ability: you understand timing, easing, and how animation communicates state Technical Ability Proficient in React/TypeScript; you ship your own designs Familiar with component libraries like shadcn/ui, Radix, or similar Understanding of design tokens, CSS architecture, and scalable frontend patterns Product Context Experience with developer tools, no-code platforms, or workflow/automation products Comfort designing complex interfaces: canvas editors, drag-and-drop builders, multi-step flows Ability to simplify dense functionality without dumbing it down Strong Signals Design engineer or founding designer roles at early-stage startups Experience at companies like Figma, Linear, Notion, Retool, Vercel, or similar dev/productivity tools Built a design system from scratch at a growing company Background combining design and engineering Mindset Generalist: you'd rather own the whole surface than perfect one component forever Opinionated but collaborative: you have strong taste and can articulate why Early-stage ready: you're excited by ambiguity and building foundations others will use

Full-stack engineer who understands vibe coding tools and how recent AI frameworks work. You'll build both frontend and backend for our enterprise workflow automation platform. Responsibilities Architect and build both frontend and backend systems powering our vibe coding platform Define technical strategy: system design, data modeling, service boundaries, and infrastructure choices Integrate AI models and build reliable natural language to action pipelines Collaborate directly with customers to translate enterprise needs into product solutions Evolve infrastructure for reliability, observability, and performance at enterprise scale Ship fast while building sustainable, maintainable systems Requirements Experience 5+ years building products quickly TypeScript (backend and frontend), React Deep understanding of system design, database architecture, and scaling distributed systems Modern deployment and infrastructure (Vercel, Cloudflare Workers). Infrastructure as code (Terraform). CI/CD pipelines (GitHub Actions) Experience with AI frameworks (Vercel AI SDK, Mastra) and patterns (agentic loops, tool calling, streaming, MCP) Bonus Understanding of tools like OpenCode and how they work Shipped AI/LLM products to production. LLM observability and production debugging (Langfuse, Datadog). Experience at early-stage startups Major contributions to OSS projects Mindset Founder mentality: hard work, independence, ownership Ready to work in person in San Francisco