Senior Front End EngineerLocation:Brazil (Remote)About Sphise TechnologiesSphise Technologies is a global outsourcing and talent solutions company, partnering with high-growth businesses to build strong, high-impact teams across finance, technology, and operations. For one of our clients, a mid-sized company operating at scale, we are currently looking to hire aSenior Front End Engineer.Role OverviewWe are seeking a Senior Front End Engineer to lead custom front-end development for a Sitecore DXP / OrderCloud implementation. This role will be the first dedicated front-end engineer on the project and is expected to operate with a high degree of autonomy, technical ownership, and architectural judgment. This is not a theme-tweaking role. You will design, build, and evolve a modern headless front end integrated with Sitecore DXP and OrderCloud APIs.Key Responsibilities• Design and implement a custom headless front end for Sitecore DXP / OrderCloud using modern JavaScript frameworks. • Build production-grade applications using Next.js, with deployment targets such as Vercel or Netlify. • Integrate front-end applications with: -OrderCloud APIs -Sitecore DXP APIs -Authentication, catalog, search, pricing, and checkout services • Translate UX/UI designs into scalable, accessible, and performant front-end implementations. • Establish front-end architecture patterns, conventions, and best practices suitable for a growing team. • Collaborate closely with UX, product, and backend teams to ensure clean API contracts and realistic implementation. • Optimize performance, SEO, and Core Web Vitals for commerce use cases. • Participate in technical decision-making around tooling, frameworks, and deployment strategy. • Own front-end code quality, testing approach, and release readiness.Required Qualifications• 5+ years of professional front-end development experience. • Strong hands-on experience with Next.js and React in production environments. • Experience building headless or composable front ends for CMS or commerce platforms. • Solid understanding of modern front-end architecture: -SSR, SSG, ISR -Client vs server components -State management patterns• Strong proficiency in JavaScript/TypeScript, HTML, and CSS. • Experience integrating REST and/or GraphQL APIs. • Familiarity with modern deployment platforms such as Vercel or Netlify. • Familiarity with design systems and component-driven development. • Comfortable working as an initial solo contributor while setting foundations for future scale.Preferred Experience• Proactive use of AI-assisted code generation tools (e.g., Cursor + Claude) to: -Accelerate development, refactoring, and prototyping. -Design and implement automated tests (unit, integration, and E2E) for modern front-end applications. -Leverage Figma MCP to translate Figma designs directly into production- ready component code, reducing design-to-implementation cycle time. • Hands-on experience with headless CMS/commerce platforms. • Experience working on B2B or complex eCommerce applications. • Ability to read, understand, and modify code in adjacent front-end frameworks such as AngularJS or similar React-like ecosystems.Benefits Competitive salary to recognize and reward your achievements. Flexible work environment. Opportunities for professional and personal growth.