🇫🇷 Paris, France · 17h ago
Founding Frontend Product Engineer — International SEO | Station F | Equity-Based Until Funding
CrissCross
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ROLE DESCRIPTIONCrisscross is looking for a founding frontend product engineer to take ownership of the frontend architecture for an AI-powered global B2B discovery platform.This is a product-engineering role with a major technical SEO component. Crisscross will ultimately publish tens of thousands of category × market discovery pages across multiple countries and languages, so we are particularly interested in engineers with experience building SEO-driven marketplaces, directories, e-commerce platforms or other large-scale international web products in React and Next.js.This is not a role where completed Figma files are simply handed to an engineer. You will work directly with the founder, backend engineers, UX and visual design to help determine how the product works and then build that experience in production.ABOUT CRISSCROSSCrisscross is building an AI-powered global discovery platform for B2B services. Companies spend trillions each year hiring agencies, consultants and technology providers, yet finding the right vendor remains fragmented across Google searches, directories, referrals and manual research.Crisscross helps buyers discover, evaluate, compare and contact the providers best suited to their needs using structured vendor intelligence, AI-assisted discovery and transparent market rankings.Although Crisscross serves business buyers, the experience should not feel like conventional B2B software. We want a beautiful, intuitive and minimalist product with the simplicity and accessibility of a strong consumer platform.Crisscross is being built from Station F in Paris by a founding team with experience across Silicon Valley advertising, AI, data and ad-tech, including Amazon Ads, Meta, Yahoo, VideoAmp and Media.Monks.WHAT YOU WILL BUILDYou will help shape:Search and AI-assisted vendor discoveryCategory × market landing pagesRanked vendor lists and vendor profilesSearch, filters, comparison and shortlistingMatch scores, evidence and confidence signalsQuick & Easy RFIResponsive desktop and mobile experiencesLarge-scale SEO/GEO publishing across markets and languagesWHAT YOU WILL OWNFrontend architecture in React, Next.js and TypeScriptReusable components and design-system implementationHigh-fidelity translation of visual designs into productionNavigation, interaction behavior and product-flow improvementsAPI integration with search, AI, ranking and vendor-data systemsResponsive behavior, accessibility and frontend performanceLoading, empty, error and incomplete-data statesTechnical SEO architecture and implementationInternational and multilingual frontend architectureOngoing frontend development after the MVPQUALIFICATIONSWe are looking for someone with strong experience in:React, Next.js and TypeScriptBuilding polished, production-quality web applicationsTechnical SEO and SEO-conscious frontend architectureServer-rendered and crawlable Next.js applicationsReusable frontend and component architecturePerformance optimization and Core Web VitalsAPI integration and modern frontend developmentTranslating Figma designs into high-quality production interfacesAccessibility and responsive designWorking directly with product, design and backend engineersTaking substantial ownership rather than simply implementing ticketsExperience with the following is especially relevant:International or multilingual SEOMulti-country websites or applicationsProgrammatic SEO or large-scale templated publishingMarketplace, directory, search or recommendation productsE-commerce or large catalog platformshreflang, canonicals, localized URLs and sitemap architectureStructured data / Schema.orgSSR, SSG, caching and incremental regeneration strategiesAI-assisted interfacesZero-to-one startup developmentPrior experience building SEO-driven products across multiple countries or languages is highly desirable. However, we are equally interested in strong frontend engineers with deep technical SEO fundamentals who can apply those skills to an international platform.LOCATION AND COMPENSATIONParis-based candidates are strongly preferred because the team is building from Station F and values regular in-person collaboration.Crisscross is currently pre-funding. Initial participation is equity-based while we complete the MVP and raise our first financing round, with the role intended to transition into paid long-term employment following financing.Sourced from LinkedIn. Relocantly aggregates public job postings; apply on the original site.