Siena AI Tech Stack

AI customer service agents for e-commerce brands

Technology, Information and Internet New York, NY 11–50 employees Founded 2023 Privately Held

Siena AI builds conversational AI agents for commerce customer support, operating at scale with Claude and a modern cloud stack (Node.js, React, Next.js, PostgreSQL, AWS). The hiring composition—engineering-heavy with substantial support and product teams, but decelerating velocity—combined with pain points around scaling deployments, conversion rates, and hiring efficiency, suggests the company is in post-launch operations mode, optimizing deployment quality and support operations rather than pure product expansion.

Tech Stack 30 technologies

Core StackCursor Node.js React TypeScript Express AWS PostgreSQL Redis GitHub Actions Next.js Terraform Python Ashby Lever Greenhouse AWS Lambda JavaScript Claude AWS CodePipeline AWS CDK Codex ChatGPT AWS Fargate AWS SQS Honeycomb REST API Midjourney Perplexity Gemini LinkedIn

AdoptingNext.js Terraform Cursor Python AWS CDK Claude

What Siena AI Is Building

◆Challenges

Automation and conversion rates
Scalable systems handling millions of customer conversations
Blocking progress
Scaling hiring without headcount
Bottlenecks in hiring funnel
Scaling engineering team
Support cost efficiency
Scaling ai agent deployments
Broken hiring funnel
Improving automation rates

▲Active Projects

Ai agent deployment for strategic accounts
Platform shaping based on deployment learnings
Cloud infrastructure maintenance
Evals and measurement frameworks
New agent capabilities across platforms
Design evaluation systems for continuous improvement
Technical roadmap
Evaluation framework development
Evaluation system design
Design recruiting infrastructure

Hiring Activity

Decelerating110 roles · 20 in 30d

Department

Engineering

Support

Product

Sales

Marketing

Ops

Seniority

Senior

Manager

Mid

Lead

Director

Junior

Notable leadership hires: Head of Engineering, Engineering Head

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About Siena AI

Siena AI develops AI-powered customer service agents designed for e-commerce brands. The platform automates customer interactions, processes transactions, and extracts insights from conversations at scale. Founded in 2023 and based in New York, the company operates as a lean, distributed team across 13 countries, with engineering and support as the dominant functions. Their tech backbone is modern and cloud-native: Node.js and React on the frontend, Next.js and Express on backend, PostgreSQL and Redis for state, and AWS infrastructure (Lambda, Fargate, SQS) for orchestration. They rely on Claude for LLM capabilities and are actively adopting Cursor and Terraform for internal developer velocity.

HeadquartersNew York, NY

Company Size11–50 employees

Founded2023

Hiring MarketsPoland, United States, Romania, Canada, Portugal, Brazil, United Kingdom, Ireland

Frequently Asked Questions

What AI model does Siena AI use?

Siena uses Claude as its primary LLM, alongside ChatGPT and Gemini. The stack also includes Codex for code generation and Perplexity for information retrieval in agent workflows.

What infrastructure does Siena AI run on?

Siena uses AWS as its core cloud provider, with serverless compute (Lambda, Fargate), queuing (SQS), CI/CD (CodePipeline, GitHub Actions), and infrastructure-as-code (CDK, Terraform). PostgreSQL and Redis handle state.