Senior Product Designer

Retell AI is using the first principles to reimagine the call center with cutting edge voice AI.

Since launching 18 months ago, thousands of companies now utilize Retell’s AI voice agents to handle sales, support, and logistics calls that once required large teams of human agents. Backed by Y Combinator, Alt Capital, and other leading investors, we have scaled to $36M ARR with a team of 20 people, up from $5M at the start of 2025.

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.

• We’re a top 50 AI app in a16z list: https://tinyurl.com/5853dt2x

• #4 on Brex's Fast-Growing Software Vendors of 2025: https://www.brex.com/journal/brex-benchmark-december-2025

• We're also one of the top ranking startups on: https://leanaileaderboard.com/

Let's build a beautiful product for Retell.

Retell 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 at Retell, 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.

• 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 Retell’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.

• 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.

• Cash: $180k - $230k

• Equity: Equity Provided

• Location: Redwood City, CA, US

• US Visas: Retell AI 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.

• 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.)

• $300/month commuter reimbursement (gas, Caltrain, etc.)

• $75/month phone bill reimbursement

• $50/month internet reimbursement

• 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.

1. Design First Round (30 min): Portfolio walkthrough and design decision discussion

2. Design Second Round (45 min): Live UX question or a brief design exercise (you can choose whichever works best for you). This will focus on UX thinking and UI execution

3. Onsite (3 hours): this will include a live Design Exercise (Figma), focused on UX problem-solving and execution, as well as a review of your understanding of the user.