Senior Product Designer (Artificial Intelligence)

About this role

• You will be part of a talented team of designers with a shared mission to make data easily accessible for all users
• We’re looking for a Senior Product Designer / Design Engineer who sits at the intersection of interaction design and AI engineering: someone who uses AI to ship faster, builds the skills and evals that make AI more effective, and invents new interaction paradigms for how people work alongside intelligent systems
• This isn’t a traditional design role. Yes you’ll be using Figma, but also writing code with AI, training it, evaluating it, and questioning every assumption about what a “UI” can be when the interface itself reasons
• Please note this is a 4 day on-site role in our San Francisco office
• Start with AI, stay with AI. Use LLMs to clarify scope, draft specs, surface edge cases, and align your team before committing to a direction, use AI coding tools to build and iterate on the solution itself, and merge code to prod when fits
• Prototype in code. Build working interfaces with Cursor and Claude Code, guiding structure, behavior, interaction, motion and UX quality while AI handles implementation. Partner directly with engineering to decide what moves into the product and what stays as a validated spike
• Bring it to production. Fix small interaction and refinement issues directly on prod code
• Design new AI interaction paradigms for conversational interfaces. Invent and validate novel patterns for how users converse with, direct, and trust AI systems - especially in data contexts where precision and confidence matter
• Write evals, skills, and help on tools. Build the scaffolding that makes AI reliable: evaluation frameworks, reusable skills, and tooling that helps Sigma’s AI features behave predictably and improve over time
• Shape model behavior. Iterate on evals and training to improve AI performance on design output. In other words: teach AI how to be a great designer
• Set the craft bar. Define what great AI-native UX looks like at Sigm...