Senior Frontend Engineer

Join Hire Hangar and work with fast-growing global companies while building a long-term career. Job Title: Senior Frontend Engineer 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 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 - 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.