Klaviyo
Senior Software Engineer, Applied AI (Customer Agent)
$148K–$222K
Boston, MA +1 · Senior · Full-time · Posted Jun 24, 2026
- Location
- Boston, MA
Boston, Massachusetts, United States - Experience
- 7+ years in a software engineering role.
About the job
Build and scale Klaviyo’s AI-native Customer Agent platform and customer-facing experiences across channels, while contributing technical leadership and mentoring.
What you'll do
- Design, build, and scale intelligent workflows, conversational experiences, integrations, retrieval systems, and multi-channel engagement.
- Lead technical decisions and projects, weighing product and architectural trade-offs and mentoring teammates.
- Deploy tested, reliable, scalable systems that improve agent intelligence and customer outcomes.
What they ask for
- 7+ years of experience in a software engineering role.
- Strong experience developing end-to-end software solutions or extensive experience across both front-end and back-end technologies.
- Experience building scalable, customer-facing systems in fast-moving product environments.
- Experience leading projects and being accountable for technical and business outcomes.
Nice to have
- Skills with Python and related technologies; skills with React and related technologies.
- Experience with conversational AI, agentic platforms, retrieval systems, embeddings, eval frameworks, LLM orchestration, or cloud-native solutions, ideally with AWS.
Pay
$148,000 — $222,000 USD base salary
Tools
Python, React, AWS
AI focus
Develop an AI-native conversational platform and configurable customer agents; work on agentic workflows, retrieval systems, and improving agent intelligence and reliability. Practical experimentation with LLMs, AI tooling, or agentic workflows is requested.
Model-written summary · the original posting is authoritative