Pebl - Senior Frontend Software Engineer, AI UX

• This is not primarily a backend AI infrastructure, RAG platform, internal automation, or AI-assisted developer tooling role; the core need is someone who can help drive the user-facing AI experience. • This role will require in-office collaboration Monday-Wednesday in our Palo Alto, CA office. • How You’ll Make an Impact • Design and build full-stack features for our conversational AI assistant, with particular depth and ownership on the frontend/UX side. • Bring product taste and a strong point of view on what makes an AI-driven experience great — push for a better UX rather than shipping “good enough.” • Push the boundaries of what conversational and generative AI interfaces can feel like — prototype and propose new interaction patterns as the underlying models and agent capabilities evolve. • Help shape the future of how people interact with software at Pebl — you’ll be working at the edge of what’s possible in conversational and agentic UX, not maintaining what’s already been figured out. • Build and maintain both frontend and backend components (TypeScript/React on the frontend; comfortable enough on the backend to design clean contracts and APIs that support agentic workflows). • Lead by example in clean, maintainable code across the stack; mentor junior team members and foster a culture of constant learning and improvement. • Contribute to technical discussions, design reviews, and code reviews to maintain high engineering standards. • Troubleshoot issues end-to-end (frontend and backend) in production, including AI-specific failure modes (e.g., bad model output, latency, dropped tool calls). • 8+ years of professional software engineering experience, full-stack, with demonstrated strength and a clear preference for frontend/UX work. • 1+ years of hands-on experience building LLM-powered or agentic products — not just calling an API, but designing how an agent reasons, uses tools, and hands control back to the user. • Experience building interfaces for AI-powered or agentic products — conversational UIs, copilots, assistants — including exposure to generative/dynamic UI techniques where the interface adapts to model behavior. • Solid understanding of LLM design patterns, prompt engineering, and observability/instrumentation for agentic systems. • Strong command of modern frontend (React/TypeScript) paired with a solid understanding of how frontends integrate with backend services, APIs, and real-time/streaming data. • A track record of helping build products beyond standard CRUD apps and dashboards — something with real craft, polish, or a distinctive user experience. • Comfort working across the full stack when needed (backend, infra) — this isn’t a pure frontend role. • A lean mindset — focus on delivering customer value by minimizing waste, optimizing workflows, fostering continuous improvement, and prioritizing quick iteration with quick feedback cycles. • Excitement for working in a space that’s evolving rapidly, where the best patterns for AI-driven UX are still being discovered — and a desire to help discover them. • Our Commitment to You • At Pebl, we’re committed to supporting our team with comprehensive rewards and benefits designed to meet diverse needs across roles and locations. Our core offerings include: • Flexible Time Off – Take the time you need to recharge. • Parental Leave – Support for growing families. • Health and Dental Insurance – Where applicable, to cover you and your loved ones. • Retirement Savings + Employee Incentive Plan – Plan for the future while sharing our success. • Please visit our career page for more information.