Senior Design Engineer

GermanyRemoteFull-timesenior

EngineeringDesign Engineer

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Quick Summary

Requirements Summary

At least 5 years of experience building user interfaces in design engineering, front-end development, or a design-focused engineering role. Deep knowledge of React and TypeScript,

Technical Tools

EngineeringDesign Engineer

We are looking for a hands-on Design Engineer who bridges the gap between product design and front-end development. You will turn ideas and designs into polished, production-ready interfaces across a platform used by energy retailers and developers, customer-facing connection flows, and the company website. Working closely with designers, engineers, and product managers, you will help shape the tools and experiences supporting the transition to a smarter, more flexible energy system. You will have significant ownership in a small, senior team where your work moves directly into production. The role also offers an opportunity to influence design systems, front-end practices, and the practical use of AI in creative and engineering workflows.

Build, develop, and ship production-ready user interfaces across the core platform, customer-facing connection experience, and website, working directly in the codebase.
Contribute significantly to the design system in collaboration with front-end engineers, developing and maintaining components, design tokens, and documentation.
Keep the design system aligned across Figma, code, AI-assisted tools, and other workflows.
Create interactive prototypes in code to explore concepts, test ideas with customers and colleagues, and validate directions before full implementation.
Improve the quality of user experiences by refining interactions, motion, accessibility, performance, and interface details.
Collaborate with engineering teams to improve front-end development, review, and release processes, ensuring design intent is consistently reflected in production.
Work with engineers on API design and improvements, helping make developer-facing interfaces clear, intuitive, and easy to integrate.
Develop tools and prototypes that strengthen collaboration between design and engineering.
Help shape the team's use of AI for prototyping, exploration, development, and workflow improvement, while recognizing its limitations.
Take ownership of projects from early concepts through implementation and release, contributing to a high standard of design and engineering craft.

Requirements

~1 min read

At least 5 years of experience building user interfaces in design engineering, front-end development, or a design-focused engineering role.
Deep knowledge of React and TypeScript, alongside strong foundations in HTML, CSS, and web accessibility.
Solid understanding of APIs, including the ability to interpret documentation, work with real data, understand developer needs, and contribute to API design decisions.
A portfolio demonstrating both design work and implemented, production-quality interfaces.
Recent practical experience using AI in design and engineering workflows, with a clear understanding of where AI adds value and where it falls short.
Experience contributing to a design system that is actively used by product or engineering teams.
Ability to work independently, taking an initial idea or loosely defined problem through to a shipped feature without requiring a detailed specification.
Strong collaboration and communication skills, with the ability to explain design decisions to engineers and technical constraints to designers.
Excellent written communication skills, particularly important in a remote-first working environment.
Strong attention to detail and a passion for refining the finer aspects of interface quality, including transitions, spacing, and edge cases.
Interest in the energy transition and motivation to contribute to technology that supports electrification and more flexible energy use.