Chief of Staff Job at Jinba.io, San Francisco, CA

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  • Jinba.io
  • San Francisco, CA

Job Description

Chief of Staff

Location: San Francisco

Employment Type: Part-time (Contract)

Location Type: Hybrid

Compensation: based on experience

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.

We're a YC W26 company, working with some of Japan's largest financial institutions and global enterprises.

About the Role

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.

What You'll Do

  • 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.

Requirements

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.

Logistics

  • 20+ hours/week, with flexibility on when those hours happen
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Job Tags

Full time, Contract work, Part time, Bank staff

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