Merantix Capital is hiring: Freelance UI/UX Designer (f/m/d) (Stealth AI Energy

Overview

Freelance UI/UX Designer (f/m/d) for a stealth AI energy venture. Shape the user experience of Europe’s first AI-native energy supplier by designing from a blank canvas and collaborating with founders, engineers, and early customers.

Energy markets are complex and rely on outdated systems. Zeus Energy is creating an AI-native full-stack energy platform to help businesses buy, manage, and optimize their energy with intelligence, speed, and transparency. We are backed by Merantix, Europe’s leading AI venture studio.

Joining Zeus at this early stage means defining how businesses will experience the next generation of energy supply.

Your role

• Lead the design of our MVP, from user research and wireframes to high-fidelity interfaces.
• Build intuitive, modern user journeys for SMEs managing energy for the first time with enterprise-grade tools.
• Collaborate directly with founders, engineers, and early customers to rapidly test, refine, and implement designs.
• Establish our design system and visual identity in close alignment with product and brand.
• Translate complex data and workflows into clear, actionable, and delightful user experiences.

Your profile

• 3+ years of experience in UI/UX design for digital products (B2B SaaS or fintech/energy a strong plus).
• Proven ability to turn complexity into simplicity.
• Strong skills in Figma (or similar tools), prototyping, and user testing.
• Comfortable engaging directly with customers and incorporating feedback.
• Pragmatic, iterative, and motivated by designing solutions that truly matter.
• Fluent in English (our team language); German a plus.

What We Offer

• Impact: Shape the product experience at a decisive early stage.
• Visibility: Direct interactions with design partner customers.
• Creative freedom: A greenfield design challenge with no legacy constraints.
• Growth: Work at the intersection of AI, energy, and B2B product design.
• Flexibility: Freelance or interim setup; hybrid with presence in Berlin preferred, but open to remote for the right candidate.

About Us

We are an equal-opportunity employer and value diversity. We consider all applications equally regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, or gender identity. We strongly encourage individuals from groups traditionally underrepresented in tech to apply.