Internal Sales Representative (m/f/x)
Open job offer from H2 Core Systems in Heide


Our goal is to use our experience in combination with renewable energies and new technologies to stand up for a “green and sustainable future”.

We are committed to using our experience and expertise in renewable energies and new technologies to help ensure that the future really is "green and sustainable".
H2 Core Systems is a spin-off of a specialist company for fluid system technologies and has extensive expertise in the application of gases in industrial plants. The customer is at the heart of everything we do, and our team of experts works hand-in-hand to forge long-term relationships.

Since it’s founding in 2020, H2 Core Systems has successfully installed over 200 systems in 40 countries worldwide. We produce and install modular, scalable plug & play electrolysis systems for use worldwide – combining them with the latest storage and fuel cell technologies to create centralized energy supply systems.

We are looking for you to strengthen our team at the Heide location as soon as possible!

Internal Sales Representative (m/f/x)

We are looking for you to join our team as an Internal Sales Representative (m/f/x) at our location in Heide at the earliest possible date!


  • Commercial order processing and preparation of quotations, invoices and post-calculations for our global customers
  • Support with quotation follow-up, optionally in direct customer contact
  • Support with strategic target customer acquisition
  • Communication with customers and close cooperation with interdisciplinary teams as well as interface management with various departments (production, purchasing, logistics)
  • Independent review of inquiries and offers for factual and legal accuracy, in particular of customer-specific ancillary conditions
  • Development and establishment of a largely digitalized process structure in the area of sales as well as creation and maintenance of customer master data in the ERP system
  • Continuous participation in improvement processes for internal order processing and customer service in cooperation with the colleagues in charge
  • Preparation of key figures for controlling


  • Ideally, you have successfully completed a commercial apprenticeship, a university degree, or a comparable qualification
  • Ideally, you have already gained professional experience in sales, internal sales, and/or order management (preferably in the technical field)
  • Process know-how (such as pre- and after-sales services) is desirable
  • Experience with customs and export formalities is advantageous
  • You are proficient in dealing with MS Office and ideally have already gained initial experience with ERP systems
  • You have strong communication skills in dealing with internal and external stakeholders – Due to our internationality, good German and English skills are required (but don’t worry, we offer training opportunities)
  • You are proactive and willing to continuously develop yourself further
  • You count the ability to work in a team, a sense of responsibility, structure, diligence, and assertiveness among your strengths


  • A clear vision: impressive career opportunities and secure jobs.
  • High-growth industry: drive hydrogen technologies and innovations forward with us.
  • Learning opportunities: our training courses and diverse development opportunities will make you an expert.
  • A good working environment: free coffee and organic fruits as an energy booster.
  • Global team: We have an international team, working from several continents.
  • Flexible job models to support your work-life balance: working in the office, the option of mobile working and flexitime.
  • Competitive remuneration: With bonuses and 30 days’ vacation per year.
  • Benefit Card: After your probationary period, you can look forward to our monthly sustainable shopping and transportation Benefit Cards.
  • Let’s build a green future together: Let’s make green hydrogen available to everyone, everywhere.

What comes next:

Apply now and quickly simply via our form.

We check your application and we will contact you immediately.

In a personal conversation we exchange our ideas.

We are one team – let’s shape the future together!

H2 Core Systems

H2 Core Systems develops, manufactures and maintains modularly configurable electrolysis systems that are expandable and scalable at any time. The perfect solutions in combination with photovoltaic or wind power systems for a decentralized, self-sufficient and green energy supply that can be used worldwide.

Our goal is to use our experience in combination with renewable energies and new technologies to stand up for a “green and sustainable future”. We want to inspire the social change in a resource-saving, intelligent and goal-oriented action. Together with our partners, we are “first movers” and are determined to do great things! That’s why we are looking for highly motivated people who share their expertise and skills and want to expand them in a dynamic team in an uprising market.

Become part of the “hydro generation” and join our enthusiastic team to stand up for a green and sustainable future!

Your place of work: Heide

Heide is a mid-sized town in Schleswig-Holstein and the administrative center of the Dithmarschen district. For years, the Dithmarschen district has played an increasingly important role in the energy transition and particularly in the field of green hydrogen with various projects on the west coast of Schleswig-Holstein. We actively support this forward-looking course.

Address and contact person

H2 Core Systems
Rüsdorfer Str. 8
25746 Heide

Your contact person

Nicole Reiche will be happy to answer your questions about your work with us.

Nicole Reiche

Phone: +49 172 19 09 405

Send us your application!

If you think you would be a good fit, please contact us.

You can also upload your application documents (short cover letter with your salary expectations, CV, and important references) via the form.

We are looking forward to your application.

In our diverse and open work environment, we value the uniqueness of each individual. We encourage you to become part of our team and enrich diversity together. Your unique perspectives are warmly welcomed here.

Nicole Reiche

Or by post:
H2 Core Systems GmbH
Internal Sales Representative (m/f/x)
Attn. Nicole Reiche
Rüsdorfer Str. 8
25746 Heide

    Application Form