design
Posted Feb 10Agent Experience Designer, Voice (Multilingual)
at Sierra
San Francisco, United StatesOn-site
Responsibilities
- - Design and apply effective and repeatable evaluations: Create and maintain structured methods for assessing voice performance and interaction quality, helping teams make informed tradeoffs and catch issues early.
Requirements
- ABOUT US At Sierra, we’re creating a platform to help businesses build better, more human customer experiences with AI.
- Previously, he was co-CEO of Salesforce (which had acquired the company he founded, Quip) and CTO of Facebook.
- Earlier, he started and led Google’s AR/VR effort, Project Starline, and Google Lens.
- Before that, Clay led the product and design teams for Google Workspace.
- WHAT YOU’LL DO You’ll help shape and scale high-quality voice experiences across a global portfolio of AI agents.
- WHAT YOU’LL BRING - 5+ years in a role that blends product craft with applied systems thinking (e.g., voice/AI
- experience design, conversation design, applied linguistics, UX for AI, product engineering with strong user
- experience focus, localization program leadership with quality ownership). - Strong ability to operate across many languages and priorities—you bring structure to ambiguity and can ship reliably while quality stays high. -
- Experience creating repeatable evaluation frameworks (rubrics, test suites, scorecards, QA gates) and using them to drive decisions. - Excellent communication: you can turn messy signals into clear guidance for engineering, product, and customer stakeholders. - Comfort living close to the work: deep knowledge of the product, understanding our customers and our customers’ customers, always listening, digging into edge cases, constantly improving the system as well as the product. EVEN BETTER… -
- Experience with speech synthesis and conversational agents. - Expertise with global language families. - Familiarity with provider and voice evaluation. - Linguistics, sound editing, and/or musical background. -
- We build trust in AI by making it more accessible, safe, and useful.
- BE YOU, WITH US We're working to bring the transformative power of AI to every organization in the world.
Benefits
- benefits to reflect our values and offer the following to full-time employees: - Flexible (unlimited) paid time off - Medical, dental, and vision
- benefits for you and your family - Life insurance and disability
- benefits - Retirement plan dependent on country of employment - Parental leave - Fertility and family building
- benefits through Carrot - Lunch, as well as delicious snacks and coffee to keep you energized - Discretionary benefit stipend giving people the ability to spend where it matters most - Free alphorn lessons These
- benefits are further detailed in Sierra's policies, may vary by region, and are subject to change at any time, consistent with the terms of any applicable compensation or benefits plans.
- Eligible full-time employees can participate in Sierra's equity plans subject to the terms of the applicable plans and policies.
Contact
- Our co-founders are Bret Taylor https://www.linkedin.com/in/brettaylor/ and Clay Bavor https://www.linkedin.com/in/claybavor/.
Additional details
- We are primarily an in-person company based in San Francisco, with growing offices in Atlanta, New York, London, Paris, Madrid, Munich, Singapore, Japan, and Sydney.
- We are guided by a set of values that are at the core of our actions and define our culture: Trust, Customer Obsession, Craftsmanship, Intensity, and Family.
- These values are the foundation of our work, and we are committed to upholding them in everything we do.
- Bret was also one of Google's earliest product managers and co-creator of Google Maps.
- Working closely with cross-functional teams and customer stakeholders, you’ll combine systems thinking, design judgment, and operational rigor to improve voice quality, accelerate multilingual readiness, and create more human experiences.
- - Improve breadth and depth of voice quality: Evaluate, compare, and iterate on voices across multiple providers, languages, and use cases, ensuring experiences meet a high bar for clarity, naturalness, and appropriateness while continuously improving product and systems.
- - Support faster multilingual readiness and launches: Partner with product, engineering, and deployment teams to research solutions, evaluate options, identify risks, and guide voice-related decisions that enable timely, high-confidence launches across regions.
- - Partner cross-functionally to resolve voice and interaction issues: Collaborate with engineering, product, and support teams to investigate quality gaps, diagnose root causes, and drive improvements through clear recommendations and follow-through.
- - Participate in customer-facing voice design work: Contribute to voice selection and design discussions with customers, helping them understand options, tradeoffs, and best practices while ensuring outcomes align with their goals.
- - Enable teams to scale voice design effectively: Design and develop guidance, examples, lightweight frameworks, and product enhancements, that empower product managers and engineers to make strong voice and interaction decisions independently.