Office Manager (m/w/d)

Job Description

At sonnen, we're driven by a clear goal: creating a future powered by clean, affordable energy for everyone. That's why we make our customers independent - not only from fossil fuels, but also from rising electricity costs.

The key to this independence is our intelligent, all-in-one energy system. It combines solar panels, battery storage, energy tariffs, and wallboxes - all developed and manufactured in Germany.

As the first and only provider in Germany, we also connect thousands of home batteries into one shared network: the sonnenVPP, our industry-leading virtual power plant.

In short: every day, we're working to shape the energy future. And we'd be thrilled to have you join us!

What you will do to drive the energy transition

• Act as the central point of contact for internal employees, external customers, and business partners
• Manage and continuously improve office management and administrative processes
• Create, issue, and manage outgoing invoices
• Monitor incoming and outgoing payments, including accounts receivable management and dunning processes
• Be responsible for all SAP postings relevant to monthly, quarterly, and annual financial statements
• Ensure the timely and accurate submission of balance sheet and P&L figures to the sonnen Group Accounting team
• Work closely with internal and external stakeholders to ensure financial accuracy and compliance
• Ensure compliance with applicable legal and commercial requirements in the UK context, including tax matters, customs regulations, and related topics

What you will need on that journey

• Proven professional experience in a similar role, ideally in office management, finance, or commercial administration
• Experience with common accounting software, ideally SAP or a comparable system
• Very good MS Office skills, especially Excel
• Strong commercial understanding and attention to detail
• Business-fluent written and spoken English; German skills are an advantage
• Structured, reliable, and service-oriented working style

What you can expect at sonnen

• An atmosphere of openness, tolerance and mutual respect, where innovation is expected and encouraged
• 30-32 days annual vacation with increasing team membership
• Leasing of company (e-)bikes with up to 40% discount
• Flexible working hours and option working mobile
• Use of sports memberships (EGYM Wellpass, only €29.75/month) and discounts for other services and products
• Employee discount on our electricity tariff
• Regular team and company events
• We love dogs! You too? Feel free to bring your fellow friend to our offices

You feel we are a match? Apply now and help us to shape the energy transition together. We look forward to welcoming you to #teamsonnen!