Siena AI

Product Engineer

Siena AI

full-time

Posted on:

Location: New York • 🇺🇸 United States

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Job Level

Mid-LevelSenior

Tech Stack

JavaScriptNode.jsReactTypeScript

About the role

  • Build new agent capabilities end-to-end and make them work seamlessly across platforms
  • Translate messy customer workflows into elegant product features and deployment opportunities
  • Design and ship evaluation and QA systems that improve agent performance over time
  • Expand integrations ecosystem by shipping new platforms and enterprise connections
  • Own platform automation and onboarding to help customers go live in days, not weeks
  • Work across multiple initiatives at once, balancing speed with thoughtful trade-offs
  • Partner with product, design, and leadership to shape what gets built—and what doesn’t

Requirements

  • 3+ years of software engineering experience building technical B2B products, ideally in CX, e-commerce, or AI automation
  • AI-native mindset — regularly use tools like Claude, Cursor, v0, or ChatGPT to build and ship faster
  • Full-stack fluency: React, TypeScript, Node.js, APIs, integrations, data modeling
  • Comfort working directly with clients and solving complex, real-world problems
  • Curiosity and a builder’s DNA — ability to figure things out beyond following specs
  • Strong product judgement and ability to push back and choose the right bets