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Join to apply for the Senior Fullstack Engineer role at Siena AI.

Meet Siena. Siena is the first intelligence layer for customer experience. We're creating an operating system of AI agents that learn, remember, and act across every customer touchpoint—from support conversations to shopping experiences to voice and social media interactions. Siena doesn’t just automate support; it powers shopping agents, builds persistent customer memory, generates actionable business insights, and creates empathetic interactions that feel human. We’re transforming how businesses understand and connect with their customers, turning every interaction into intelligence that makes the next one better.

The team is a small, distributed group that punches way above its weight. Every person here has outsized impact because we've built leverage into everything we do, making us faster and, frankly, more fun to work with. If you're excited about building something that doesn’t exist yet, keep reading. We're building agents that don’t just respond to customers—they remember them, learn from every interaction,



and connect experiences across channels.

About The Role
As a Full Stack Engineer at Siena, you’ll own projects end-to-end, developing and optimizing features within our AI-powered customer support automation platform. You’ll work closely with product and engineering teams, shaping our roadmap while building reliable, high-performance systems. This role is for engineers who love solving real-world problems, thrive in fast-moving environments, and take pride in shipping great products.

What You’ll Do
- Design, build, and maintain scalable features across the full stack (frontend, backend, and infrastructure).
- Collaborate closely with Product to break down scope and deliver in iterative, high-impact releases.
- Work on an AI-first product, integrating cutting‑edge LLM capabilities into enterprise customer support workflows.
- Solve complex engineering challenges, from optimizing API per

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📌 Senior Fullstack Engineer (Olivos)
🏢 Siena AI
📍 Olivos