Chief of Staff (AI Startup)

Hoshii; Zürich; Hybrid; CHF 120,000 - 180,000; Full time

Benefits offered by this job

Equity

Close seat to founder

Full ownership

Career growth

AI tools access

Job summary

Hoshii is building an AI-powered inbox for B2B back-office teams in Zurich. We are seeking a hands-on talent and operations leader to structure recruiting, employer brand, and cross-functional projects across CS, Sales, and Marketing.

You will own hiring pipelines, run events, and set up new functions as the company scales. You will work closely with Jiir, our Co-Founder and CEO, to build scalable processes, manage budget and vendor relationships, and keep payroll and invoicing workflows

Qualifications

• Experience building recruiting pipelines from sourcing to offer.
• Ability to run hiring events and strengthen employer brand.
• Operational mindset with cross-functional collaboration.
• Comfort with budget, invoicing and payroll basics.
• Fluency in German and English is required.

Responsibilities

• Build and run a pipeline of candidates for every position.
• Organize hiring events and strengthen the employer brand in Zurich and beyond.
• Lead cross-functional projects across CS, Sales, and Marketing.
• Set up new functions as the company grows and hand them over.
• Prepare board updates, KPI reporting, and data room edits.

Skills

Talent pipeline

Hiring events

Employer branding

Cross-functional

Operations

Payroll basics

Budget & finance

Tools

HRIS/ATS

Spreadsheets

ERP familiarity

Job description

What We Do

We're building an AI-powered inbox for B2B back-office teams. Millions of B2B teams are drowning in emails: typing up orders, updating the ERP system, chasing up enquiries and invoices. It's 2026, and they're still copying data back and forth between Outlook and ERP/CRM systems just like in 1999. Hoshii takes this work off their hands and enables whole teams to start their day more productively.

Our Blind Spot

We are growing fast. Every new customer, every new hire and every new market adds complexity, and today most of it still runs through one desk.

That is where you come in. You walk closely with Jiir, our Co-Founder and CEO, and set the organisation up for the next phase. Your first mandate is talent: everything else we want to build depends on the people we hire in the next twelve months.

The rest of the role is deliberately broad. One week you run a hiring pipeline, the next you fix an operational process or stand up a function that does not exist yet. If you have founded something before, this will feel familiar.

What You Will Own

• Talent. Build and run a pipeline of candidates for every position we open, from sourcing to offer
• Hiring events and employer brand. Get Hoshii in front of the best people in Zurich and beyond
• Projects across the company. You will be able to jump across CS, Sales, and Marketing
• Functions we don't have yet. Set them up, run them yourself, hand them over
• Board and investor work: monthly updates, KPI reporting, board deck preparation, data room
• Financial overview: budget, burn, runway, invoicing, and collections. You keep the numbers current and flag it when something moves
• Operations and admin: contracts, vendors, invoicing, payroll input, tooling

Your Profile

We are looking for a team player with a growth mindset, an entrepreneurial spirit, and genuine comfort with getting their hands dirty.

• +3 years at an early-stage startup without established process or similar. A founder background is the best possible preparation
• You have hired yourself: sourced, interviewed, closed. Not briefed an agency
• Hands-on. You do the work, you don't delegate or advise it
• Extremely organised. Nothing is dropped, nothing has to be asked twice
• You switch between three functions in a day without losing quality
• Fluent in German and English. Our users and our paperwork are in German, we run internally in English

This Position Will Not Be a Fit If

• You need clear instructions on how and whatl>
• You want to advise rather than execute
• You don't like admin, scheduling or spreadsheets
• You don't thrive in ambiguity
• You expect a 9-5 at a startup

Nice to Have

• You have founded a company before
• Recruiting or talent experience, in-house or agency
• Sales or marketing operations experience
• Exposure to Swiss payroll, finance or legal admin

What We Offer

• The closest seat to the founder, with full visibility into every part of the company
• Full ownership. Nobody hands you a structure, you build it
• A role that compounds into a functional lead
• Equity in what you're building
• We get you any AI tools you need to be 3x more productive