At Sierra, we’re creating a platform to help businesses build better, more human customer experiences with AI. We are primarily an in-person company based in San Francisco, with growing offices in Atlanta, New York, London, Paris, Madrid, Munich, Singapore, Tokyo, 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.
Our co-founders are Bret Taylor and Clay Bavor. Bret currently serves as Board Chair of OpenAI. Previously, he was co-CEO of Salesforce (which had acquired the company he founded, Quip) and CTO of Facebook. Bret was also one of Google's earliest product managers and co-creator of Google Maps. Before founding Sierra, Clay spent 18 years at Google, where he most recently led Google Labs. 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.
Sierraでは、企業がAIを活用してより優れた、より人間らしいカスタマーエクスペリエンスを構築できるようにするためのプラットフォームを開発しています。当社はサンフランシスコを拠点とする、対面でのコラボレーションを重視した企業であり、アトランタ、ニューヨーク、ロンドン、パリ、マドリード、ミュンヘン、シンガポール、東京、シドニーにオフィスを展開し、拡大を続けています。
私たちは、行動の核となり、当社の文化を定義する一連の価値観を指針としています。それらの価値観とは、Trust、Customer Obsession、Craftsmanship、Intensity、Familyです。これらが私たちの仕事の基盤であり、あらゆる活動においてこれらを維持・実践することに全力を注いでいます。
SierraはBret TaylorとClay Bavorによって共同創業されました。Bretは、現在OpenAI取締役会の会長です。前職はSalesforceの共同CEOで(彼が創業したQuipをSalesforceが買収)、FacebookでCTOも務めています。またGoogleの最初期のプロダクトマネージャであり、Google Mapを共同開発しました。Clayは、Sierraを創業する前はGoogleに18年在籍し、最後はGoogle Labsの責任者を務めました。それ以前は、GoogleのAR/VR関連事業(Project Starline、Google Lensなど)やGoogle Workspaceのプロダクト&デザインチームのリーダーも歴任しています。
本番レベルのAIエージェントの設計と提供:高いパフォーマンス、信頼性、直感的な使い易さを備えたAIエージェントを構築・リリースします。これらのAIエージェントは、Sierraの成長に直結する収益をもたらす、中核的かつミッションクリティカルなものとなります。これらはプロトタイプではなく、金融、ヘルスケア、コマースなどの業界の本番環境で稼働する、強力で拡張性の高いシステムです。
エージェント開発ライフサイクル(ADLC)の推進:初期のパイロット作成からデプロイ、そして継続的な反復的改善に至るまで、完全なオーナーシップと裁量権を持ちます。本番環境におけるAIエージェントの構築、チューニング、改善を担当し、その過程でADLCのベストプラクティスの標準を定義していきます。
大企業や最先端スタートアップとのパートナーシップ:世界有数の大企業のリーダーと直接連携し、その企業が直面する重要なビジネス課題を理解したうえで、大規模に展開できるAIエージェントを構築し、業務のあり方を変革します。また、日本の最先端スタートアップとも連携し、事業全体にAIエージェントを組み込むことで、イノベーションと効率化を推進します。
プラットフォームの未来の構築:顧客との直接的な取り組みが、Sierraの中核プラットフォームの進化を方向づけます。満たされていないニーズを見つけ、新しいツールや機能のプロトタイプを作成し、リサーチ、プロダクト、プラットフォームの各チームと協働しながら、AIエージェント開発とSierraのプロダクトの未来を形づくっていきます。
当社のエンジニアチームが最近取り組んだプロジェクトとして以下のようなものがあります。
大手通信会社およびメディア企業向けに、サブスクリプション解約抑止の対応において有人オペレーターを一貫して上回るパフォーマンスを発揮するAIエージェントを設計・構築
故障機器のトラブルシューティングや、パーソナライズされた商品推奨など、複雑な顧客対応を行えるAIエージェントの開発・改善
業界固有のユースケースに合わせた、汎用化可能なAIエージェントフレームワークの作成(金融サービスに関する当社ブログの事例はこちら)
新しいエージェントアーキテクチャ、セルフサービス機能、生成型エージェント開発など、新規プロダクト施策における顧客企業との共同開発の推進
最新の音声モデルを検証し、大企業顧客の環境に大規模導入する方法を検討
本番環境のAI/LLMの構築およびデプロイの経験
優れた技術的問題解決能力(特に急激に変化する、かつ曖昧な環境において)
自ら主体的にモノづくりに取り組み、手を動かして試行錯誤できる人。困難を克服し成果物を完成させるためのクリエイティブなやり方を見つけ出せる人
お客様と直接やり取りしながら、ニーズを理解し、具体的な課題解決に取り組めること
高い日本語コミュニケーション能力。技術系および非技術系の相手に対して、明確、率直、かつ説得力のあるコミュニケーションが取れること
エンドツーエンドの本番システムの構築および拡張の経験
自身による創業または創業期エンジニアの経験。職人技、オーナーシップ、スピードのバランスを取ることの意味を理解している
今日のAIエージェントを支えるツールを習熟している(評価フレームワーク、エージェントツール、RAGパイプライン、プロンプトエンジニアリングなど)
React、TypeScript、Goの経験
お客様とのやり取り、または社外ステークホルダーがいる技術プロジェクトを主導した経験
高い英語コミュニケーション能力
Design and deliver production-grade AI agents: You'll build and ship highly performant, reliable, and intuitive AI agents that are central, mission-critical and drive revenue directly to Sierra's growth. These aren't prototypes—they are powerful, scalable systems running in production environments across industries like finance, healthcare, and commerce.
Drive the Agent Development Life Cycle (ADLC): You'll have complete ownership and autonomy from initial pilot through deployment and continuous iteration. You'll be responsible for building, tuning, and evolving AI agents in production environments, defining the standard for ADLC best practices along the way.
Partner with large enterprises and cutting-edge startups: You’ll work directly with leaders at some of the world’s largest enterprises to understand their most pressing business challenges, and build AI agents that transform how they operate at scale. You'll also partner with the most cutting-edge startups in London, embedding AI agents across their entire business stack to drive innovation and efficiency.
Build the future of the platform: Your direct work with customers will guide the evolution of Sierra's core platform. You'll surface unmet needs, prototype new tools and features, and collaborate with research, product, and platform to shape the future of AI agent development and Sierra's product.
Experience building and scaling end-to-end production systems
Strong technical problem-solving skills, especially in fast-changing, ambiguous environments
A builder and tinkerer’s mindset with high agency - you find creative ways to overcome obstacles and ship
Comfort working directly with customers to understand their needs and solve real-world problems
Excellent communication skills - clear, direct, and persuasive across technical and non-technical audiences
Experience building or deploying AI/LLM systems in production
Have been a founder or founding engineer - you know what it means to balance craft, ownership, and speed
Familiarity with tools that power today's AI agents: eval frameworks, agent tooling, RAG pipelines, and prompt engineering
Prior experience with React, TypeScript, and/or Go
Previous roles where you interfaced with customers or led technical projects with external stakeholders
These are some examples of projects that engineers on our team have worked on recently:
Design and build AI agents for large telecommunications and media companies that consistently outperform human agents in managing subscription churn
Develop and refine AI agents capable of navigating complex customer interactions, like troubleshooting a broken device and personalizing product recommendations
Create generalizable AI agent frameworks tailored for industry-specific use cases. See some examples in our financial services blog!
Facilitate design partnerships for new product initiatives, such as new agent architectures, self-service capabilities, and generative agent development
Experiment with the latest voice models and figure out how to integrate them at scale to enterprise-grade customers
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.
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.
We're working to bring the transformative power of AI to every organization in the world. To do so, it is important to us that the diversity of our employees represents the diversity of our customers. We believe that our work and culture are better when we encourage, support, and respect different skills and experiences represented within our team. We encourage you to apply even if your experience doesn't precisely match the job description. We strive to evaluate all applicants consistently without regard to race, color, religion, gender, national origin, age, disability, veteran status, pregnancy, gender expression or identity, sexual orientation, citizenship, or any other legally protected class.
AI agents for enterprise customer experience, founded by Bret Taylor.
View company profileEstimated based on role seniority, stage (Series C) & industry benchmarks.
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