the company, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The the company Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of search and the intelligence of AI to enable everyone to accelerate the results that matter. By taking advantage of all structured and unstructured data — securing and protecting private information more effectively — the company's complete, cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI.
In this role, you will provide technical leadership for the Integral UX engineering team, the group responsible for the company UI (EUI) - the company's design system and React component library - and the shared patterns, tokens, and tooling that give the company products a consistent, accessible, and high-quality experience.
As Tech Lead, you will set technical direction for how the design system scales across dozens of consuming teams, mentor and grow the engineers around you, and act as the senior-most technical voice connecting design intent to component architecture. We are looking for a Principal Software Engineer with deep expertise in React, TypeScript, and component library architecture, who has built or led design systems at scale, and who combines strong technical judgment with the leadership skills to align a team, a roadmap, and a community of internal consumers around a shared direction.
Act as tech lead for the Integral UX engineering team - setting technical standards, reviewing designs, unblocking engineers on difficult problems, and ensuring the team's work ladders up to a coherent long-term architecture.
Raise the bar on accessibility, performance, and cross-browser correctness for shared UI building blocks used throughout the company's products.




Mentor and grow engineers on the team through code review, design critique, and pairing, and help develop the next generation of senior and staff-level engineers.
Represent the Global UX team in cross-functional planning with product, design, and engineering leadership, and make the case for investment in design system health and developer experience.
Use profiling, telemetry, and feedback from consuming teams to identify where the design system is creating friction, and lead the initiatives that fix it.
Explore how AI can improve the design-to-code workflow - for example, component generation from design specs, automated accessibility checks, or AI-assisted migration tooling - while holding the team accountable for the quality and correctness of shipped components.
Deep, hands-on expertise building and operating React and TypeScript component libraries or design systems in production, at a scale with many internal or external consumers.
A strong track record of technical leadership - setting architecture, raising quality standards across a team, and making decisions that other engineers align behind without needing formal authority.
Experience designing composable, flexible component APIs, including patterns like compound components, render props, headless components, and theming/token systems.
Strong instincts for accessibility (WCAG, semantic HTML, keyboard and screen-reader behavior) and a track record of building that rigor into a team's default practices.
Curiosity about how AI can improve design system workflows, paired with the judgment to hold a high bar for correctness and quality in whatever ships.
Whether you're looking to launch a new career or grow an existing one, the company is the type of company where you can balance great work with great life. It doesn't matter if you're just out of college or your children are; Health coverage for you and your family in many locations
Increase your impact - We match up to $**** (or local currency equi
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📌 Principal Software Engineer - Global Ux - Application - Platform (Madrid)
🏢 Elastic
📍 Madrid