Agent Experience Designer, Voice (Multilingual)

Sierra
San Francisco
Workplace: OnsiteFull timeUSD 190,000 - 290,000 annuallyFunction: Design (Product/UX/UI/Visual)Experience: 5+ yearsSkills: ["Communication","Collaboration","Problem-solving","Ownership","Empathy"]

Role focuses on shaping and scaling high-quality multilingual voice experiences for AI agents. You will evaluate voices across providers and languages, drive multilingual readiness, design repeatable evaluation methods, and collaborate with engineering, product, and customer teams to improve voice interactions and personas across a global portfolio.

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FursaFursa
Sierra
Sierra
5 months ago

Agent Experience Designer, Voice (Multilingual)

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Source: Company careers pageValidated by: Fursa AI
Last checked: 4 hours agoStatus: Live

Job Summary

Role focuses on shaping and scaling high-quality multilingual voice experiences for AI agents. You will evaluate voices across providers and languages, drive multilingual readiness, design repeatable evaluation methods, and collaborate with engineering, product, and customer teams to improve voice interactions and personas across a global portfolio.
Location: San Francisco
Workplace: Onsite
Employment Type: Full time
Job Function: Design (Product/UX/UI/Visual)

Key Responsibilities

  • •Help shape and scale high-quality voice experiences across a global portfolio of AI agents by collaborating with cross-functional teams and customers to improve voice quality and multilingual readiness.
  • •Evaluate, compare, and iterate on voices across providers, languages, and use cases to ensure clarity, naturalness, and appropriateness while improving products and systems.
  • •Design and apply structured methods for assessing voice performance and interaction quality to guide trade-offs and catch issues early.
  • •Collaborate with engineering, product, and support teams to diagnose quality gaps and drive improvements through clear recommendations and follow-through.
  • •Participate in customer-facing voice design work to help clients understand options, trade-offs, and best practices while aligning outcomes with their goals.

Pay and Benefits

Salary: USD 190,000 - 290,000 annually
Equity and Bonus:Equity
Perks:Paid LeaveMedical BenefitsDentalVision401kParental LeaveMeal Allowance

Key Requirements

  • •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.
Experience:5+ yearsAIVoiceMultilingualCustomer experienceUX for AI
Skills:CommunicationCollaborationProblem-solvingOwnershipEmpathy
Tech Stack:Speech synthesisConversational agents

Company Brief

Sierra
Develops advanced AI agents and tools focused on building autonomous, generalist machine learning systems to assist developers and enterprises in automating complex workflows, decision-making, and application-level tasks.
Industry: AI & Machine Learning
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