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Senior Frontend Engineer at Hire Hangar. Remote Location: Mexico - Mexico City. Join Hire Hangar and work with fast-growing global companies while building a long-term, remote career.. Job Title. Senior Frontend Engineer (AI Products & Analytics UI). Location. Remote. Time Zone. US Time Zones (EST–PST). Role Overview. We are seeking a Senior Frontend Engineer to build AI-powered product interfaces and analytics-driven user experiences. This role is ideal for someone who enjoys building highly interactive frontend applications using modern React architecture and AI integrations.. Key Responsibilities. Build and maintain frontend applications using React 19 and Next.js App Router. Develop dashboards and data-heavy interfaces. Translate designs into responsive production-ready UI. Build complex forms and scalable frontend components. Integrate AI-powered workflows and LLM functionality. Work with Supabase and real-time frontend data flows. Optimize frontend performance and usability. Collaborate with product, design, and engineering teams remotely. Required Qualifications. Strong production experience with React 19 and Next.js App Router. Expert-level TypeScript strict mode experience (non-negotiable). Strong Tailwind CSS implementation skills. Experience building dashboards, analytics tools, or data-heavy applications. Experience with Server Components and frontend state management. Production experience integrating LLM APIs into applications. Practical prompt engineering experience. Experience with OpenAI APIs or AI SDKs. Familiarity with AI-assisted development tools such as Cursor, Copilot, or Claude Code. Experience working with Supabase or similar BaaS platforms. Ability to work with PostgreSQL schemas and relational data structures. Experience implementing polling and real-time data-fetching patterns. Strong written and verbal English communication skills. Must have prior remote work experience, be fluent with remote collaboration tools and platforms (such as Slack, Zoom, Google Workspace, Jira, Linear, or similar), and have ideally worked with US or UK-based companies. Applications without this experience will not be considered.. Preferred Qualifications. Experience working on AI-native products. Familiarity with modern charting and visualization libraries. Experience contributing to design systems and scalable UI architecture. Tools & Technology. React 19. Next.js App Router. TypeScript. Tailwind CSS. Supabase. PostgreSQL. OpenAI API / AI SDKs. Cursor, Copilot, Claude Code. Google Workspace. Slack, Zoom, and other remote collaboration tools. Please NOTE. It is crucial that you complete the application form in full. As part of the application process, you will be required to record a video. If your application is successful, you will receive an email confirming next steps—the video is the first step of the interview process. If you do not record a video, we will not be able to consider you for ANY open roles..  . We connect top talent with vetted employers, competitive pay, and real growth opportunities.