Junior Customer Support Specialist

At sun.store, we’re building the B2B marketplace for Europe’s solar industry.

Installers, distributors and traders use sun.store to buy and sell solar panels, inverters and batteries - with logistics and financing built into the platform.

When something goes wrong, customers come to us.

A payment hasn’t cleared. A seller stopped replying. A shipment needs to be rerouted. Someone needs to know whether a product will arrive before their installation next week.

That’s where you come in.

About the role:

This isn’t a call centre job. There’s no dialler, no script and no target for how many calls you can get through before lunch.

You’ll own customer cases from the first message until the problem is actually solved - across phone, email, chat and WhatsApp.

And because we’re building a support operation for the future, you won’t just solve the same problems over and over again. You’ll help us automate them.

What you’ll do:

• Own customer cases end to end. Investigate what happened, find the right information or person, and stay with the case until it’s solved.
• Work with our AI support agent. Review its conversations, spot where it gets things wrong and help teach it how to handle new types of cases.
• Make support better. Improve response templates, our knowledge base and the way we explain things to customers.
• Spot recurring problems. You’ll often see platform issues first. Flag them and help the product team understand what’s happening.
• Learn how the solar market works. There’s a lot to discover, and you’ll learn it along the way.

What we are looking for:

• Professional-level German and/or French - at least one of these languages is required.
• An additional European language is a strong plus - Dutch, Italian, Romanian, Portuguese, Bulgarian, Croatian, Greek, Czech, Slovak, Slovenian, Lithuanian or another European language.
• Very good English - it’s our internal working language.
• Clear, human writing and the ability to explain complicated things simply.
• Curiosity and a problem-solving mindset.
• Patience, ownership and good judgement when things get messy.
• Willingness to use AI tools as part of your everyday work.

What you’ll get

• Competitive salary. A compensation package that reflects the role and your experience.
• Paid time off & paid sick leave. Time off when you need it.
• Hybrid work model. 3 days a week in our Warsaw city-centre office, with flexibility around the rest.
• Workations & company offsites. Opportunities to work from elsewhere and spend time together as a team.
• Private medical care. Access to private healthcare through Lux Med.
• Structured onboarding. You’ll work directly with a senior specialist during your first four months, with clear milestones and support along the way.
• Real ownership. You’ll help shape our customer support operation and the development of our AI agent.
• A close connection to product. Customer support is often the first place where product problems become visible.

If you like solving problems, taking ownershipand making things better - you’llfit right in. We’dlove to meet you!