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. Compensation: $1.5K – $4K per month • Multiple Ranges