Senior Product Designer (m/f/d)

OPTIMUSE is a Vienna-based AI startup revolutionizing the real estate and construction industry. We bring insights to the world's largest asset class that it never had before - both for new developments and existing portfolios. Our AI Hans delivers instant, deep engineering insight into costs, risks and optimization potential, grounded in building physics, simulation and engineering. Backed by international... 1 Senior Product Designer (m/f/d) Job description * Own end-to-end product design across features - flows, interactions, UI, and prototypes. * Maintain and evolve the OPTIMUSE design system, ensuring visual and experiential consistency across the product. * Contribute to product vision at the macro level, shaping the design language of OPTIMUSE as we scale. * Actively shape user research - collaborating on study design, feeding into validation loops, and translating findings into design decisions. * Collaborate closely with product, engineering, and customer success to bridge user needs and product execution. * Use AI tools actively as a productivity multiplier - for research synthesis, rapid ideation, prototyping, and iteration. Your missionWe're looking for a Senior Product Designer to join our team and take full ownership of design at OPTIMUSE. In this role, you'll work across the entire product - from shaping individual features to defining our design system and product vision. You'll actively shape how we learn from users, partnering closely with product to turn insights into well-crafted interfaces. As the sole designer on a scaling team, you'll be at the center of fast decision and iteration cycles. Your profile * 3+ years of professional experience in digital product design, specifically in software or SaaS products. * You've worked across more than one digital product and bring cross-context perspective to design decisions - you know what good looks like because you've seen it in different shapes. * Hands-on experience owning a design system or contributing significantly to one. * Confident shaping research direction - you don't just consume findings, you help design the questions. * AI-native workflow: you actively use AI tools as part of your day-to-day design process and can speak to how they've changed the way you work. * Comfortable with ambiguity and shifting priorities - you've worked in a startup or scale-up and know what that means in practice. * Proficiency in our core toolset: Figma, Storybook, and AI-assisted workflows (Claude, Cowork/Code or equivalent). * Experience with unmoderated usability testing tools (e.g. Maze, Lyssna) - we're building this practice and looking for someone who can help establish it. * Working proficiency in English required. German is nice to have. Why us? * Be the design owner at a company that has found its market and is now scaling - your work shapes a product that real asset managers and building professionals rely on. * Work with a talented, international team (~25 people, 10 nationalities) that values craft, collaboration, and moving fast. * Modern office in Vienna's 2nd district. We work on site, with home office days possible upon request. * Flexible working hours outside of core times - and plenty of ways to recharge, from table tennis to team events and company celebrations. * The collectively agreed minimum monthly gross salary for this role is €3,843 based on full-time employment. We offer a clear willingness to pay above - commensurate with your qualifications, experience, and performance. Plus lunch vouchers of €5 per day. Bewerbung: Diese Stelle wird mittels Vorauswahl durch das AMS Startup Fachzentrum Wien besetzt. Bitte übermitteln Sie Ihre Bewerbungsunterlagen an: z.Hd. Hr. Krainz mit dem Betreff: 17174233USA Das Mindestentgelt für die Stelle als Senior Product Designer (m/f/d) beträgt 3.843,00 EUR brutto pro Monat auf Basis Vollzeitbeschäftigung. Bereitschaft zur Überzahlung.