Senior Frontend Developer

This range is provided by Harnham. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$140,000.00/yr – $160,000.00/yr

Direct message the job poster from Harnham

Recruitment Consultant | Data & Software Engineering at Harnham

Senior Frontend React Developer – AI Interface

Location: Hybrid (U.S.)

Compensation: $140,000 – $160,000 base + equity

About the Company

A rapidly growing AI and cloud technology company is building intelligent, emotionally aware user interfaces that power next-generation human–AI interaction.

The company’s mission is to make artificial intelligence feel intuitive, transparent, and human-centered through thoughtful design and cutting‑edge real‑time technology.

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.

The Role

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.

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.

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.

Key Responsibilities

• Architect & Develop the Frontend: Lead the development of a modern React-based application , making architectural decisions to ensure scalability and maintainability.
• Build Real-Time AI Experiences: Implement a live conversational interface integrating with backend services via WebSockets for streaming audio, transcriptions, and AI responses.
• Manage Complex State: Leverage modern React Hooks and state management solutions to handle authentication, conversation history, and live AI session states.
• Collaborate on UI/UX: Work closely with designers and product managers to translate wireframes and prototypes into pixel‑perfect, responsive, and emotionally intelligent interfaces.
• Write High-Quality Code: Deliver clean, maintainable, and well‑documented code following modern testing and review practices.

About You

• 5+ years of professional frontend development experience with a strong focus on React.
• Strong understanding of React architecture and modern state management patterns.
• Proficient in RESTful API integration and asynchronous data handling.
• Familiarity with Microsoft Azure and cloud deployment workflows.
• Portfolio demonstrating ability to build clean, beautiful, and intuitive user interfaces.
• Genuine interest in AI, conversational interfaces, and human‑computer interaction.
• Bachelor’s degree in Computer Science or a related field, or equivalent hands‑on experience.

Bonus Points

• Experience with TypeScript.
• Knowledge of frontend testing tools such as Jest or React Testing Library.
• Familiarity with UI animation libraries (e.g., Framer Motion).
• Exposure to avatar or animation‑based UI systems.
• Experience deploying apps to Azure Static Web Apps.

Why Join

• Competitive compensation: $140K–160K base + equity
• Hybrid work flexibility across the U.S.
• Health, dental, and vision coverage
• Opportunity to shape the future of human–AI interaction through design and engineering
• A collaborative, product‑driven team building technology with emotional intelligence at its core

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Software Development

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