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Staff Product Design Engineer — Data

Data Engineer Full-time Freelance Spain

Job details

Not specified Salary
Spain Eligibility
Staff Experience
Full-time Employment

About this role

Role overview Shape digital products from early problem framing through polished design and, where useful, working code. You’ll work across consumer and business tools, using user feedback and data to guide decisions and make experiences clear, fast, and useful.

Responsibilities - Partner with users and product managers to identify meaningful problems, assess trade-offs, and decide what to build. - Validate design ideas with SQL, dashboards, and product metrics. - Design and prototype interfaces across discovery, AI-assisted experiences, reporting, and decision-support tools. - Turn designs into coded prototypes or production features when that best serves the project, collaborating with engineers through development and release. - Use AI tools to explore concepts and speed up prototyping, while reviewing their output carefully.

Requirements - At least eight years of product design experience, with substantial front-end development knowledge. - Strong product judgment: connect user needs and business goals, and explain design trade-offs. - A portfolio demonstrating design quality, product thinking, and relevant work built in code. - Proficiency with HTML, CSS, responsive layouts, design systems, JavaScript or TypeScript, and a modern framework such as React. - Familiarity with Git, pull requests, development and production environments, plus SQL, dashboards, and metrics. - Careful use of AI: verify generated work, protect sensitive information, and understand code before shipping it.

Nice to have - Experience designing data-heavy products or building with large language models. - Personal projects that show what you like to build.

Benefits and work setup Flexible scheduling, a bonus, stock options, health insurance from the first day, language lessons, a fitness membership, and allowances for meals and transport are listed. The role also includes a discount on events and experiences and the option to access part of salary early.

Skills detected in the listing

TypeScriptJavaScriptReactSQL
Detected Oct 30, 2026
Last verified Nov 12, 2026

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