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HE4 - Front-end Developer React / React Router / Typescript at Rockcruit. Additional Info: A tiempo completo in Argentina Remote Limited - Nivel medio. . We are seeking an experienced . Frontend Developer with strong React, React Router, and TypeScript. skills to build and continuously improve a headless ecommerce storefront running on Cloudflare Workers and backed by our own commerce platform. This is primarily a frontend position (roughly 80% frontend, 20% backend). Most of your time will go into the React storefront: product and collection pages, search, cart, checkout, and customer accounts. The storefront talks to our Python/Django backend over a typed JSON API, and you'll make small, well-scoped backend changes when a frontend feature needs them, such as adding a field to an API response or a new endpoint, with support from the backend team. . You'll work in an established, well-tested codebase and collaborate with technical and nontechnical stakeholders to build polished ecommerce experiences, troubleshoot issues, evaluate feature feasibility, and recommend practical solutions.. . Responsibilities. . ● Build and improve a server-rendered React storefront using React Router (framework mode) and TypeScript. . ● Build responsive, accessible interfaces with HTML, CSS, and Tailwind CSS. . ● Consume our REST/JSON API (types generated from its OpenAPI schema) for products, variants, collections, search, cart, checkout, orders, and accounts. . ● Build and maintain the checkout experience with Stripe Elements. . ● Build pages and content components with the Storyblok headless CMS. . ● Translate business requirements and rough mockups into intuitive, functional ecommerce experiences. . ● Evaluate proposed features for technical feasibility and recommend alternatives when API or platform limitations exist. . ● Troubleshoot issues across the storefront, the API, browser behavior, and third-party integrations. . ● Make light backend changes in Python/Django (API fields, small endpoints, tests) when a frontend feature needs them. . ● Implement and troubleshoot analytics and marketing integrations (GA4, Klaviyo). . ● Support ecommerce SEO requirements including redirects, canonical tags, structured data, breadcrumbs, metadata, and indexability. . ● Improve frontend performance (Core Web Vitals), usability, and maintainability. . ● Write unit tests (Vitest, Testing Library) and end-to-end tests (Playwright) as part of a test-first workflow. . ● Communicate technical constraints, tradeoffs, and recommendations clearly to technical and nontechnical team members. . Requirements. . ● 3+ years of professional experience with React, TypeScript, JavaScript, HTML, and CSS. . ● Hands-on experience with React Router 7 / Remix or a similar server-rendering React framework (e.g. Next.js). . ● Experience building or maintaining ecommerce storefronts (product pages, faceted search, cart, checkout). . ● Experience consuming REST/JSON APIs and integrating third-party services. . ● Working knowledge of a backend language and framework, preferably Python/Django, enough to read the code and make small changes. . ● Experience writing automated tests for frontend code. . ● Strong debugging and troubleshooting skills, including browser dev tools and network inspection. . ● Proficiency with Git and pull-request-based workflows. . ● Ability to work within and improve an existing codebase. . Frontend / Product. . ● Strong UI/UX judgment. . ● Ability to translate business requirements or rough mockups into functional interfaces. . ● Understanding of responsive and accessible frontend development. . ● Ability to identify technical or usability limitations before implementation. . ● Ability to recommend practical alternatives when a requested approach is not technically appropriate. . Communication. . ● Excellent English communication skills. . ● Able to clearly explain technical constraints and tradeoffs to both technical and nontechnical stakeholders. . ● Comfortable working independently and taking ownership of assigned work. . Nice to Have. . Candidates will receive additional consideration for experience with:. . ● Cloudflare Workers or another edge runtime. . ● Tailwind CSS. . ● Storyblok or another headless CMS. . ● Stripe (Payment Element, Payment Intents). . ● Django, Django Ninja/FastAPI, or PostgreSQL. . ● Elasticsearch-backed search UX (facets, autocomplete, recommendations). . ● Ecommerce analytics and event tracking, including GA4. . ● Klaviyo or similar marketing integrations in a headless environment. . ● Ecommerce SEO and replatforming/site migrations. . ● Playwright, OpenAPI-generated types, and CI/CD workflows. . ● AI coding assistants as part of daily development