Sierra - Agent Experience Designer, Voice (Multilingual)
Requirements
• 3+ years experience in experience or conversation design in a hands-on product craft role. • Strong regional and multilingual instincts; high taste and high rigor for language, including: English (UK/International), French, German, Spanish, Italian, Portuguese, Arabic, Dutch and Nordic languages. • Ability to handle multiple customer contexts simultaneously while staying organized. • Confidence working directly with customer stakeholders in co-creation settings. • Experience with speech synthesis and conversational agents. • Deep expertise with EMEA language families. • Familiarity with provider and voice evaluation. • Linguistics, sound editing, and/or musical background. • Experience enabling other teams via playbooks, training, and internal tooling. • Trust: We build trust with our customers with our accountability, empathy, quality, and responsiveness. We build trust in AI by making it more accessible, safe, and useful. We build trust with each other by showing up for each other professionally and personally, creating an environment that enables all of us to do our best work. • Customer Obsession: We deeply understand our customers’ business goals and relentlessly focus on driving outcomes, not just technical milestones. Everyone at the company knows and spends time with our customers. When our customer is having an issue, we drop everything and fix it. • Craftsmanship: We get the details right, from the words on the page to the system architecture. We have good taste. When we notice something isn’t right, we take the time to fix it. We are proud of the products we produce. We continuously self-reflect to continuously self-improve. • Intensity: We know we don’t have the luxury of patience. We play to win. We care about our product being the best, and when it isn’t, we fix it. When we fail, we talk about it openly and without blame so we succeed the next time. • Family: We know that balance and intensity are compatible, and we model it in our actions and processes. We are the best technology company for parents. We support and respect each other and celebrate each other’s personal and professional achievements.
Responsibilities
• Develop new voices — Design and implement natural-sounding production-ready voices for European locales and key customers, from first concept through launch. Own the end-to-end experience of how a voice sounds—and make deliberate, tasteful choices about accent, pacing, personality, and prosody. • Build and tune voices in the tooling — Tune voices directly using Sierra's platform tooling, including running command-line prompts and submitting pull requests. You're comfortable operating in this environment and iterating quickly. • Direct and record voice talent — Source, direct, and record voice actors. Cut, clean, and prepare audio files for use in the voice pipeline, ensuring recordings meet the quality bar for synthesis. • Partner with customers on requirements — Work directly with Sierra's customers to understand both their hard requirements (locale coverage, latency, telephony constraints, compliance) and soft requirements (brand personality, tone, warmth, register). Translate fuzzy brand language into concrete, buildable voice specifications. • Make voice quality measurable — Help define how we judge whether a voice is good: naturalness, brand fit, intelligibility, and consistency across a conversation. Build feedback loops with customers and contractors that improve voices over time. • Manage a network of language contractors — Employ and manage contractors with native language skills who can partner with you to tune voices in their languages, review nuances a non-speaker would miss, and assess quality improvements over time. Build repeatable processes for evaluating voice quality across locales. • Inform the platform roadmap — Act as the platform team's sharpest internal customer. Collate customer feedback and help scope the tools, levers, and workflows that will let the voice platform team build, launch, and manage voices at scale, and enable voice design to become increasingly self-serve over time.
Benefits
• We want our 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. • BE YOU, WITH US
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