Senior Product Designer, AI

Overview Sigma is transforming how businesses allow customers to build apps, agents and dashboards on top of governed enterprise data. We are growing the design team and seeking designers who are excited to solve challenging problems and deliver impactful capabilities across our stack. You will join a team of designers with a shared mission to make data easily accessible for all users. This isn’t a traditional design role. 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. What You’ll Do Start with AI, stay with AI. Use LLMs to clarify scope, draft specs, surface edge cases, align your team before committing to a direction, use AI coding tools to build and iterate on the solution, and merge code to production when fit. 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 production 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 Sigma: patterns and principles the broader team builds on. What We’re Looking For 4+ years in interaction design or design engineering, with recent hands-on AI tooling experience — not just prompting, but building. Demonstrated use of AI coding assistants to ship real products (and side projects). You can describe what you built, how AI accelerated it, and where you had to steer it. Experience writing evals, agents, prompt libraries, or skills for AI systems. You understand why evaluation is the hardest part of AI product development. Strong interaction design fundamentals: you know when to reach for a new pattern and when to extend a familiar one, and you can defend that choice to anyone. Opinions about AI UX: trust signals, error recovery, progressive disclosure of reasoning, and real examples of how you’ve addressed these. Exceptional ability to communicate design decisions to PMs, engineers, ML researchers, and executives. A portfolio that includes AI-powered or AI-adjacent product work. Portfolio Requirements Transformed intricate interaction problems into elegant flows; bonus if includes conversational interfaces. Designs that have been successfully released, demonstrating system-wide thinking and AI-first approaches. Documentation of your process and progressive evolution of designs, including the business problem, constraints, iterations, and final product. Demonstrated alignment of designs with company objectives while meeting user needs. The base salary range for this position is $210,000 - $250,000 annually. Compensation may vary outside this range based on qualifications, skills, competencies and experience. This role is eligible for a variable pay, stock options, and a comprehensive benefits package. Benefits Equity Generous health benefits Flexible time off policy Paid bonding time for new parents Traditional and Roth 401k Commuter and FSA benefits Lunch program Dog-friendly office Sigma is an equal opportunity employer. We are committed to building a smart and strong team regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender, gender identity or expression, veteran status, or any other protected status. We look forward to learning how your experience can enable all of us to grow. Note: We have an in-office work environment in all our offices in SF, NYC, London and Sydney. Our Privacy Practices: When you submit a job application on this site, Sigma processes your personal data for evaluating your candidacy for employment and as otherwise needed throughout the recruitment and hiring process. Please review Sigma’s Candidate Privacy Notice for more details. Your personal data may be transferred to countries other than the one in which it was provided (including the USA, the UK, Canada, Australia). Sigma’s use of AI: This hiring process utilizes artificial intelligence tools to assist in candidate screening and assessment. Our AI tools are designed to complement, not replace, human decision-making. #J-18808-Ljbffr