Lead Frontend Engineer

INFINNI

. Define and enforce frontend standards for production-ready work produced by Design .

Posted 11/11/2026full-timeRemote • SpainSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in frontend development with a strong focus on AI integration, design systems, and production-quality standards. Proficient in React, TypeScript, and advanced AI coding tools, with a commitment to teaching and collaboration across design and engineering teams.

Highest-signal resume keywords

AI Agent Design And Workflow BuildingExpert React And TypeScriptStrong Tailwind CSS And Shadcn/UIComponent Library And Design System MaintenanceFluent Written And Spoken English

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Frontend DevelopmentAI Coding ToolsUnit TestingComponent TestingEnd-To-End TestingVisual Regression TestingAccessibility KnowledgeInternationalisationFrontend Performance OptimizationGit Fluency

Soft Skills

CollaborationTeachingCode Review

Tools & Technologies

Claude CodeTailwind CSSStorybookPlaywrightI18nextGitHub ActionsElectron

Industry Keywords

Design SystemsDTCG TokensToken PipelinesSaaSCRMCreator EconomyWCAGWAI-ARIAAPCAUnicode CLDR

Tech Stack

Tools & technologies

ElectronReactTypeScript

About the role

Key responsibilities & impact

Define and enforce frontend standards for production-ready work produced by Design
Improve the path from Design output to engineering-ready production code
Design and build AI agents, workflows, and tools for Design Next
Review designers’ code and uphold production-quality standards
Collaborate with the design-system team on components and tokens
Feed product-discovered design-system gaps back into the shared system
Teach designers to ship code effectively with AI through self-explanatory rules, examples, and reviews
Shape an AI-native process connecting Design, Product, and Engineering from idea to production

Requirements

What you’ll need

7+ years in frontend, including 2+ years as a tech lead
Hands-on experience designing and building AI agents and workflows, including tool use, prompts, evaluation, guardrails, CI integration, and code review integration
Advanced daily use of AI coding tools such as Claude Code, including skills, hooks, subagents, and MCP
Expert React and TypeScript in strict mode
Strong Tailwind CSS and shadcn/ui, including token theming and component extension without forking
Experience building or maintaining component libraries or design systems, including DTCG tokens, token pipelines, theming, component APIs, and Storybook or similar documentation
Unit, component, end-to-end, and visual regression testing; Playwright or similar
Practical accessibility knowledge including semantics, keyboard navigation, screen readers, and contrast
Internationalisation at scale using i18next or similar, including plurals and locale formatting
Frontend performance experience involving rendering, bundle size, and profiling
Tooling experience with custom ESLint rules, dependency rules, pnpm monorepos, and GitHub Actions
Git fluency and code review experience
Fluent written and spoken English
Electron or desktop app experience, WCAG/WAI-ARIA/APCA/Unicode CLDR/Intl APIs, internal developer tools/CLIs/code generation, SaaS/CRM/creator-economy experience, and Chinese or Spanish are nice to have

Benefits

Comp & perks

Relocation package, with the Beckham Law tax rate if moving to Spain for the first time (confirmation pending)
Flexible hours
Yearly company offsite
Competitive salary