Senior AI Product Engineer II — Hybrid, Equity, Real-Time AI

Harnham; San Francisco (CA); Hybrid; USD 192,000 - 249,000; Full time

Job summary

Harnham in San Francisco is seeking a Senior AI Product Engineer II to design and deliver AI-powered product experiences in a fast-growing SaaS environment. You will transform LLM capabilities, retrieval systems, and agent-based workflows into intuitive, production-ready customer features, collaborating with product, design, and AI specialists.

The role combines strong full-stack engineering with hands-on AI application development, focusing on scalable, user-centric solutions that automate

Qualifications

• 7+ years of professional software engineering experience delivering production-grade applications.
• 2+ years of experience building AI-enabled product features.

Responsibilities

• Design, build, and maintain AI-powered product features across the full stack using modern frontend and backend technologies.
• Develop responsive user interfaces that support real-time and streaming AI interactions.
• Integrate AI services, orchestration layers, retrieval systems, and agent workflows into customer-facing experiences.
• Collaborate with AI and machine learning teams to define APIs, output formats, and user interaction patterns.
• Translate sophisticated AI capabilities into practical, intuitive workflows for end users.
• Identify and improve areas where model outputs create usability challenges or inconsistent experiences.
• Build feedback mechanisms that capture user sentiment and output-quality signals to support continuous improvement.
• Implement observability and analytics for AI features, including performance, engagement, completion rates, and user adoption metrics.
• Create reusable components, state-management patterns, and frontend frameworks that accelerate future AI feature development.
• Develop and maintain automated testing strategies across frontend, backend, and AI-enabled workflows.
• Participate in architecture discussions, design reviews, and technical mentorship activities.

Skills

React

TypeScript

Python

Node.js

AI platforms

Prompt engineering

RAG

WebSockets

SSE

Job description

Harnham in San Francisco is seeking a Senior AI Product Engineer II to design and deliver AI-powered product experiences in a fast-growing SaaS environment. You will transform LLM capabilities, retrieval systems, and agent-based workflows into intuitive, production-ready customer features, collaborating with product, design, and AI specialists.

The role combines strong full-stack engineering with hands-on AI application development, focusing on scalable, user-centric solutions that automate