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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Design Engineer - **Company:** Jobgether - **Location:** Spain (Remote available) - **Contract:** Permanent contract - **Skills:** HTML, Web Accessibility, Adobe InDesign, Application Programming Interfaces (APIs), Artificial Intelligence, Cascading Style Sheets (CSS), TypeScript, ReactJS, Figma, Front End Software Development, Api Design - **Published:** November 3, 2026 - **Apply:** https://www.jobleads.com/es/job/senior-design-engineer--spain--ee152bb8cfcd161240b639288c0d9e0af ## About the Role * 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. ## Description This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Design Engineer based in Spain. 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. Accountabilities * 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: * 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. Benefits: * Competitive compensation package. * Attractive employee stock option program. * Opportunity to contribute to an early-stage climate technology company with global ambitions. * Mission-driven, collaborative, and supportive working environment. * Access to advanced AI tools and dedicated resources to strengthen AI skills and fluency. * Dedicated time for AI learning, an internal skills library, and a budget for relevant tooling. * Remote-first working arrangements across Europe. * Option to work from an office in Oslo or access a co-working pass when needed. * Three team off-sites per year in engaging locations. * Flexible, people-first working culture. * Home-office setup stipend. We appreciate your interest and wish you the best!