Senior Frontend Engineer – React/Next.js + AI (Remote)

About the role

We are looking for a Senior Frontend Engineer to own and evolve the user experience of a streaming chat product that is expanding into analytics dashboards. The role combines deep frontend craftsmanship with AI fluency, ensuring that AI‑driven features are accurate and reliable.

Key responsibilities

• Build and maintain frontend experiences for a streaming chat application and its new analytics views.
• Develop reusable components and hooks within an established design system.
• Validate AI‑driven experiences against evaluation sets rather than manual inspection.
• Extend Python backend services when frontend functionality requires it.
• Proactively surface UI/UX issues before they impact users.

Required profile

• 5+ years of experience with React and Next.js using TypeScript.
• 2+ years building AI/ML‑driven applications, including LLM integrations.
• Experience with LLM evaluation tools such as LangSmith, LLM‑as‑judge, offline evals, or golden datasets.
• 2+ years of Python development experience.
• Hands‑on experience with AWS.
• Strong attention to UI detail, pixel‑perfect implementation, and design‑spec fidelity.
• Advanced proficiency in English.

Required skills

• React
• Next.js
• TypeScript
• Python
• AWS
• LLM evaluation (LangSmith, LLM‑as‑judge, offline evals, golden datasets)
• Design‑system implementation (e.g., Odyssey, Material, Carbon)
• D3, Recharts, Visx (charting libraries)
• WebSockets and LangGraph API (streaming chat)

What we offer

• 100% remote work from anywhere.
• Competitive compensation in USD or local currency.
• Hardware and software setup for home office.
• Flexible hours and self‑managed schedule.
• Paid parental leave, vacations, and national holidays.
• Multicultural environment with mentorship and promotion opportunities.