Senior Frontend Developer

<div><p>This range is provided by Harnham. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.</p><br /><h3>Base pay range</h3><br /><p>$140,000.00/yr – $160,000.00/yr</p><br /><p>Direct message the job poster from Harnham</p><br /><h3>Recruitment Consultant | Data &amp; Software Engineering at Harnham</h3><br /><p><strong>Senior Frontend React Developer – AI Interface</strong></p><br /><p><strong>Location:</strong> Hybrid (U.S.)</p><br /><p><strong>Compensation:</strong> $140,000 – $160,000 base + equity</p><br /><h3>About the Company</h3><br /><p>A rapidly growing AI and cloud technology company is building intelligent, emotionally aware user interfaces that power next-generation human–AI interaction.</p><br /><p>The company’s mission is to make artificial intelligence feel intuitive, transparent, and human-centered through thoughtful design and cutting‑edge real‑time technology.</p><br /><p>As part of its expansion, the engineering team is hiring a frontend leader to help shape how users experience and connect with AI through elegant, responsive, and real‑time web applications.</p><br /><h3>The Role</h3><br /><p>The Senior Frontend React Developer (AI Interface) will take ownership of building the web experience that defines how users engage with the company’s AI platform.</p><br /><p>You’ll architect and develop a fast, seamless, and beautiful interface that transforms complex real‑time data streams from AI models into a natural, conversational experience.</p><br /><p>This role blends technical excellence with design sensitivity — perfect for a frontend engineer who cares deeply about both performance and user emotion in digital interactions.</p><br /><h3>Key Responsibilities</h3><br /><ul><br /><li><strong>Architect &amp; Develop the Frontend:</strong> Lead the development of a modern <strong>React-based application</strong>, making architectural decisions to ensure scalability and maintainability.</li><br /><li><strong>Build Real-Time AI Experiences:</strong> Implement a live conversational interface integrating with backend services via <strong>WebSockets</strong> for streaming audio, transcriptions, and AI responses.</li><br /><li><strong>Manage Complex State:</strong> Leverage modern <strong>React Hooks</strong> and state management solutions to handle authentication, conversation history, and live AI session states.</li><br /><li><strong>Collaborate on UI/UX:</strong> Work closely with designers and product managers to translate wireframes and prototypes into pixel‑perfect, responsive, and emotionally intelligent interfaces.</li><br /><li><strong>Write High-Quality Code:</strong> Deliver clean, maintainable, and well‑documented code following modern testing and review practices.</li><br /></ul><br /><h3>About You</h3><br /><ul><br /><li>5+ years of professional frontend development experience with a strong focus on React.</li><br /><li>Strong understanding of React architecture and modern state management patterns.</li><br /><li>Proficient in RESTful API integration and asynchronous data handling.</li><br /><li>Familiarity with Microsoft Azure and cloud deployment workflows.</li><br /><li>Portfolio demonstrating ability to build clean, beautiful, and intuitive user interfaces.</li><br /><li>Genuine interest in AI, conversational interfaces, and human‑computer interaction.</li><br /><li>Bachelor’s degree in Computer Science or a related field, or equivalent hands‑on experience.</li><br /></ul><br /><h3>Bonus Points</h3><br /><ul><br /><li>Experience with TypeScript.</li><br /><li>Knowledge of frontend testing tools such as Jest or React Testing Library.</li><br /><li>Familiarity with UI animation libraries (e.g., Framer Motion).</li><br /><li>Exposure to avatar or animation‑based UI systems.</li><br /><li>Experience deploying apps to Azure Static Web Apps.</li><br /></ul><br /><h3>Why Join</h3><br /><ul><br /><li>Competitive compensation: $140K–160K base + equity</li><br /><li>Hybrid work flexibility across the U.S.</li><br /><li>Health, dental, and vision coverage</li><br /><li>Opportunity to shape the future of human–AI interaction through design and engineering</li><br /><li>A collaborative, product‑driven team building technology with emotional intelligence at its core</li><br /></ul><br /><h3>Seniority level</h3><br /><p>Mid‑Senior level</p><br /><h3>Employment type</h3><br /><p>Full‑time</p><br /><h3>Job function</h3><br /><p>Engineering and Information Technology</p><br /><h3>Industries</h3><br /><p>Software Development</p><br /><p>Referrals increase your chances of interviewing at Harnham by 2x</p></div><br />#J-18808-Ljbffr