Senior Software Engineer, Composer AI Product
Core
Building the foundation for Klaviyo customers to plan, create, edit, and iterate on marketing strategy through an in-app, AI-powered conversational experience and an ecosystem of LLM-powered agents.
Role type
Senior IC software engineer (AI/LLM platform)
Builds
Native chat surface, agent orchestrator, and agentic UI framework for Klaviyo's Autonomous Marketing platform.
Domain
Ecommerce marketing technology and conversational AI
Deliverable
production ML models | product features
Required skills
End-to-end software development, scalable customer-facing systems, technical leadership, mentoring, code review, testing and deployment cycles, AI-native product development, LLM experimentation, agentic workflows
Preferred skills
Python, React, conversational AI systems, workflow engines, agentic platforms, retrieval systems, embeddings, eval frameworks, LLM orchestration, cloud-native solutions (AWS), machine learning systems, multi-tenant SaaS platforms, observability and AI quality tooling
Technologies
LLMs, AWS, Python, React
Responsibilities
Develop multiple solution paths and evaluate architectural trade-offs, act as a technical leader and mentor, deploy well-designed and thoroughly tested solutions, contribute to foundational platform decisions, improve the intelligence and reliability of agent experiences
Seniority
Senior, hands-on IC with mentorship responsibilities