Founding Designer (m/w/d)

The German property management industry is one of the oldest and least digitalised service sectors in the country: file folders, fax machines, no transparency for owners, weeks-long response times, and a chronic shortage of skilled workers.
Most players respond in one of two ways: they sell software to incumbents without experiencing the operational reality, or they buy up existing management firms and bolt software onto paper-based processes. reltix has actively chosen a third path. Inside a single technical infrastructure, we unite operational management and the knowledge that comes from actually offering the service with the digitalisation of data from the properties we manage.
That gives us an operating system for property management: the system teams run on, the source of truth for every property, and the platform workflows and partners plug into.
The result is an AI-enabled service business where requests aren't passed along, they're answered directly. Whether through the manager's software interface, the voice agent on the phone, or the owner's chatbot, because the full context of the property is available everywhere and the system can act on it.
Within the wider real estate industry the property manager acts as a platform between the owner and every single service around the property. From banking, electricity, heating, and internet all the way to major renovation projects, this ecosystem spans every adjacent part of the real estate sector. This unique position allows us to not just provide this infrastructure internally but instead to open it up, so reltix becomes the context layer and the operating system of the entire real estate industry.
Founded in 2025, we've gone from zero to 4,000+ customers and a team of over 30+ people in little more than a year. With funding secured and a third office in Frankfurt planned, we are looking to expand our tech team to help us scale this vision.

reltix isn't one product, it's a portfolio of products that have to feel like one. The internal software our managers run the business on, the customer platform for owners and tenants, the property accounting system, the platforms our service providers will plug into, the voice agent on the phone, the agents across all of these: they all sit on the same operating system and they all need the same DNA.
As Founding Designer, you own that DNA. You define how every actor in the real estate value chain (managers, owners, tenants, tradespeople, asset managers, accountants) experiences reltix. And you do it at the moment when the foundations of each of these surfaces are being laid, not retrofitted years later. The decisions you make in your first six months will still be shaping the product when it's running an entire industry.
The hardest logics in property management, annual statements, reconciliations, owner approvals, contractor coordination, have to feel like a simple interaction. That translation from complexity to clarity is your job, across every surface we build.
You also own one of the most interesting design problems in the company: the intersection of human and AI collaboration. Our managers don't work next to AI, they work with it. The voice agent picks up the call; the manager steps in for the call that needs judgment. The chatbot answers the owner's question; the system executes the action. Designing those handovers, when AI acts alone, when it surfaces something to a human, how trust gets built and verified, is where reltix wins or loses. You set the patterns the rest of the industry will eventually copy.
What you'll do

• Own end-to-end product design across the full reltix surface area: the internal manager software, the owner/tenant customer platform, the accounting system, the service-provider platforms, and the conversational surfaces (voice agent, chatbot).
• Define how humans and AI agents work together inside our product: the handovers, the confidence signals, the moments of override, the way context flows between a chatbot, a manager, and an autonomous action.
• Build and own our design system from zero so every surface stays coherent as the team and the product surface area multiply.
• Take dense, data-heavy workflows (annual statements, reconciliations, approval flows) and reduce them to interactions that feel obvious in hindsight.
• Sit close to real operations. Talk to our managers, owners, and service partners, watch them work, and turn what you see into product decisions.
• Partner directly with the founders and engineers; ship, learn, and iterate in short loops.
• Lay the foundation for the next designers, researchers, and brand hires who will join behind you.