Senior Product Designer

Stealth Startup; San Francisco (CA); On-site; USD 180,000 - 230,000; Full time

Benefits offered by this job

100% coverage for medical, dental, and

DoorDash credits

Wellness reimbursement

Phone bill reimbursement

Job summary

Stealth Startup in Redwood City, CA, is seeking a Product Designer to own end-to-end product design across core user workflows. You’ll work directly with founders, engineers, and customers to shape features from first principles, not just polish UI after decisions are made.

This high-ownership role offers influence over product direction, UX quality, and design standards, with strong collaboration across a small team building real-time AI voice agents used by fast‑growing companies.

Qualifications

• 5+ years of experience as a Product Designer on shipped products.
• Strong user-centered design background (HCI, design, or equivalent).
• Excellent product taste with a strong sense of usability, hierarchy, and visual clarity.
• Detail-oriented with a passion for polish and consistency.

Responsibilities

• Own the product experience end-to-end from concepts to shipped features used in real-time scenarios.
• Shape how users interact with AI voice agents to create clear, intuitive experiences.
• Collaborate with engineers and founders to define, refine, and ship features with preserved design intent.
• Be the voice of the user by interviewing customers and translating feedback into design solutions.

Skills

Product design

User-centered design

Visual design

Design systems

Job description

Our vision for 2026 is to build a modern CX platform where entire contact centers are powered by AI. Instead of basic automation that needs constant human tuning, we’re creating intelligent AI "workers" that can act as frontline agents, QA analysts, and managers - continuously executing, monitoring, and improving customer interactions.

We’re growing quickly and looking for ambitious builders who want to tackle hard technical problems, move fast, and have real impact at one of the fastest-growing voice AI startups.

Let’s build the future together.

ABOUT THE ROLE

Let’s build a beautiful product.

The company is building infrastructure and tools that power real-time AI voice agents used by fast-growing companies. Design quality matters here- every interaction happens in real time, under pressure, with real users.

As a Product Designer, you’ll own end-to-end product design across core user workflows. You’ll work directly with founders, engineers, and customers to shape features from first principles- not just polish UI after decisions are made.

This is a high-ownership role with real influence over product direction, UX quality, and design standards.

KEY RESPONSIBILITIES

• Own the product experience end-to-end - from early concepts and PRDs to polished, shipped features used by real customers in high-stakes, real-time scenarios.
• Shape how users interact with AI voice agents, turning complex, technical workflows into clear, intuitive, and human experiences.
• Work side-by-side with engineers and founders to define, refine, and ship features, ensuring design intent and quality are preserved all the way to production.
• Be the voice of the user - conduct customer interviews, gather feedback, and translate real user pain points into thoughtful design solutions.
• Proactively raise the UX bar by identifying friction, inconsistencies, and opportunities across the product, and driving improvements from idea to launch.
• Build and evolve company's design system, setting standards for consistency, scalability, and craftsmanship as the product and team grow.
• Hold a high bar for craft and quality, sweating the details and refusing to compromise on clarity, usability, or polish.
• Influence product direction through design, contributing strong opinions, clear rationale, and taste-driven decisions that shape what we build next.

YOU MIGHT THRIVE IF

• Have 5+ years of experience as a Product Designer working on shipped products.
• Have a strong user-centered design background (HCI, design, or equivalent experience).
• Have excellent product taste and a strong sense of usability, hierarchy, and visual clarity.
• Are detail-oriented and care deeply about polish and consistency.
• Enjoy working closely with engineers, PMs, and founders to shape product direction.
• Are comfortable operating in a fast-moving startup environment with ambiguity.
• Enjoy owning problems end-to-end rather than working within a narrow design scope.
• Care deeply about building products that are easy to use and delightful.

JOB DETAILS

• Cash: $180k - $230k
• Equity: Equity Provided
• Location: Redwood City, CA, US
• US Visas: The company is open to sponsoring work authorization for qualified candidates, including H1B/H-1B, TN, L-1, E-3, F-1 (OPT/CPT), and O-1 visas.

OTHER BENEFITS

• 100% coverage for medical, dental, and vision insurance
• $70/day DoorDash credit for unlimited breakfast, lunch, dinner, and snacks
• $200/month wellness reimbursement (gym, fitness classes, etc.)
• $75/month phone bill reimbursement

COMPENSATION PHILOSOPHY

• Best Offer Upfront: Choose from three cash-equity balance options; no negotiation needed.
• Top 1% Talent: Above-market pay (top 5 percentile) to attract exceptional builders.
• High Ownership: Small teams, >$1M revenue/employee, and significant equity.
• Performance-Based: Offers tied to interview performance, not experience or past salaries.