Fullstack Software Engineer (Tortuguitas)

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 We're a small, distributed team that punches way above our weight. Every person here has outsized impact because we've built leverage into everything we do. This philosophy makes 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, shaping our roadmap while building reliable, high‑performance systems. Your code will power millions of monthly customer interactions across integral brands, where reliability and speed directly impact business outcomes. If you love solving real‑world problems, thrive in fast‑paced environments, and take pride in shipping great products, this role is for you.

What You’ll Do
- Design, build, and maintain scalable features across the full stack (frontend, backend, and infra).
- Collaborate with Product to break down scope into iterative, high‑impact releases.
- Integrate cutting‑edge LLM capabilities into real enterprise workflows.
- Work on an AI‑first product, integrating LLM capabilitie Postúlate en Kit Empleo: kitempleo.com.ar/empleo/q32lx