Chief of Staff / Founders Associate (Sales Focus) - (m/f/d)

Berlin | Hybrid | Fluent German & English required

Berlin | Hybrid | Fluent German & English required

About Cozero

Cozero is an enterprise carbon management platform helping manufacturers, logistics companies, and retailers turn scattered emissions data into business decisions: carbon accounting, reduction planning, and audit-ready ESG reporting in one place.

We are evolving fast. Our next chapter moves beyond carbon accounting into financial decision-making, connecting emissions data directly to cost and investment decisions, with the CFO as a key stakeholder.

60+ enterprise customers. Series A funded. Growing.

About the Role

You work directly for Helen, our CEO. Your mission is simple: increase our CEO's commercial capacity.

Helen closes our largest enterprise deals herself. What she lacks is time: preparation, follow-through, coordination between meetings. That is your job. You sit inside live deals, you prepare the materials that win them, and you make sure nothing agreed in a meeting dies afterwards.

This is not a generalist 'bit of everything' role. Around 70% of your time is commercial execution alongside Helen. The rest is a small number of defined special projects she delegates to you, each with an owner, a deadline and a definition of done.

It suits someone 2 to 4 years into their career who wants to learn enterprise sales and company building from the inside, at founder speed.

What You’ll Do

• Prepare strategic enterprise deal meetings: account research, stakeholder maps, decision materials, pricing scenarios.
• Own follow-through on live deals: next steps, internal coordination, CRM hygiene on Helen's opportunities.
• Draft board-ready and customer-ready documents in English and German.
• Run defined special projects end to end, for example a partnership pilot or a market analysis, and report back with a recommendation.
• Coordinate across Sales, Customer Success and the climate team so commercial commitments actually get executed.

Must-Haves

• 2 - 4 years of professional experience in a demanding environment, such as a startup, banking, consulting, or a fast commercial role.
• Experience supporting or driving commercial or revenue-relevant initiatives, directly or indirectly.
• Structured written communication. Your one-pagers get read.
• Comfort with ambiguity paired with an instinct to create structure, never wait for it.
• Fluent German and English (C1+). Customer-facing work happens in German.
• You are Berlin-based or willing to relocate.

What Success Looks Like

• Within 3 months, Helen's deal preparation runs through you and meetings start sharper.
• Deals Helen touches move faster because follow-through no longer depends on her calendar.
• You have shipped your first special project with a clear recommendation.
• After 12 to 18 months you have earned a path into a commercial or operational leadership role.

Why Join Cozero

• Founder proximity: you work with Helen daily, on the real thing, from day one.
• Real impact: your work directly supports measurable decarbonisation at enterprise scale.
• Fast development: flat structure, short feedback loops, real responsibility.

Where You'll Work

This is a hybrid role based in Berlin.

Our commercial team typically works from the Berlin office 2-4 days per week.

Compensation & Benefits

€55,000 - €75,000 gross annual salary per year, depending on experience.

You’ll also receive:

• 27 vacation days + 1 day life event leave + national holidays (Depends on location)
• €500 annual learning and development budget
• VSOP (Virtual Stock Options) - share in Cozero's success
• Regular team events every year

We’re committed to building diverse teams and creating an inclusive workplace. We welcome applications from all qualified candidates regardless of ethnic origin, gender, religion or belief, age, or sexual identity. Our recruitment process is fair, objective, and based solely on the skills and qualifications required for this role.