Growth Manager – Founder’s Office

About hansetherm

hansetherm is a Hamburg-based clean energy startup focused on accelerating the energy transition. The company makes the switch to heat pumps easier and more accessible, offering end-to-end heating solutions as a full-service provider.

To drive growth, demand, and brand strength in a focused way, the team is looking for a highly analytical marketing professional who will work closely with one of the founders and take operational ownership of the growth function.

Role overview

In this role, you will act as a founder’s right hand and take responsibility for growth across marketing and sales. The position is designed for someone who can connect data, execution, and decision-making to improve funnel performance and drive measurable outcomes.

Key responsibilities

• Partner closely with one of the founders and lead hansetherm’s growth efforts with a strong focus on marketing and sales.
• Turn insights from sales data, funnel metrics, and market observations into practical growth actions and execute them.
• Focus on results rather than just deliverables, with ownership of conversion signals, lead quality, and micro-conversions across the sales funnel.
• Build reporting structures that make marketing and sales performance clear, actionable, and decision-ready.
• Use AI and automation tools such as Make and Claude to speed up marketing and sales workflows.
• Serve as a direct interface between the founder, sales, BI, external partners, and creative contributors.

What they are looking for

• 2 to 5 years of experience in growth, marketing, or sales within a fast-scaling startup.
• A strongly analytical mindset with the ability to interpret data, draw conclusions, and combine that with an understanding of customer psychology.
• Confident Excel skills, with SQL or basic BI knowledge considered a plus.
• Experience in performance marketing, especially Google and Meta, and a solid grasp of funnel thinking.
• Willingness to learn automation tools like Make and Claude, or prior experience using them.
• Motivation to learn quickly through close collaboration with a founder.
• Ability to prioritize strongly and contribute well beyond standard working hours during high-intensity phases.
• Resilience, flexibility, and a willingness to take responsibility outside traditional office times when needed.
• An entrepreneurial mindset, structured way of working, and a high standard for quality.
• Proactive thinking, a habit of spotting gaps early, and a desire to improve things rather than simply create new ones.
• Fluency in both German and English.
• Preference for working on-site in the Hamburg office and a clear comfort with in-office collaboration.

Not a fit if you...

• Need highly detailed instructions and avoid taking responsibility.
• Only want strategic work and do not enjoy hands-on execution.
• Create content without owning its impact.
• Treat creative work and data as completely separate disciplines.
• Do not enjoy direct interaction with sales teams, customers, partners, and other stakeholders.
• Struggle in dynamic environments.
• Prefer to work remotely.
• Avoid practical, operational work.
• Are looking for a classic 9-to-5 role.

What you will get

• A key position in a fast-growing company with a genuine mission tied to the energy transition and heat pumps.
• Direct influence on the company’s growth strategy.
• Close collaboration with leadership and all core teams.
• Flat structures, short decision paths, and plenty of room to shape the role.
• Individual development through training and upskilling opportunities.
• Team events, team lunches, and attractive employee benefits through the company’s benefits platform.

Additional information

This role is for someone who wants more than just a career path — it is also an opportunity to have a real-world impact. The company is looking for a person who wants to help shape the future, work in a hands-on environment, and contribute to the broader energy transition.

About the company

hansetherm is a Hamburg company in the renewable energy sector. With the mission to make heating simple and independent, the team develops reliable solutions and actively helps drive the energy transition. As a full-service provider, the company covers the move to heat pump systems in a holistic way.

If you want to help build a sustainable energy future and make a meaningful contribution, this could be the right place for you.