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.
Requirements
- 3+ years building in Node.js, React, TypeScript, and Express.
- Strong with PostgreSQL, Redis, and cloud environments (AWS: Fargate, Lambda, EC2, SQS).
- Familiar with CI/CD (CodePipeline, GitHub Actions, or similar).
- Experience with microservices and scalable systems.
- Next.js, Python, or event-driven architectures.
- Infra-as-code (Terraform, CDK).
- Experience integrating with LLMs in production.
Responsibilities
- 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 cutting-edge LLM capabilities into enterprise customer support workflows.
- Solve complex engineering challenges, from optimizing API performance to refining microservices architecture.
- Maintain and improve our cloud infrastructure (AWS) with a DevOps mindset.
- Exercise high agency and ownership—taking initiative, making decisions, and driving ideas to production.
Other
- Product-driven—you care about the impact of what you ship, not just the code.
- AI-first—you live in Cursor, Claude Code and are comfortable orchestrating coding agents.
- Naturally curious and proactive; you don’t wait for instructions, you create momentum.
- Meaningful impact. Your work directly shapes our product and company.
- The thrill of building something new. Join us at a stage where your contributions matter most.
