Klaviyo
Sr. Lead Engineer, Applied AI (Customer Agent)
$216K–$324K
Boston, MA +1 · Senior · Full-time · Posted Jul 29, 2026
- Location
- Boston, MA
Boston, Massachusetts, United States
About the job
Set direction and build Klaviyo’s production conversational AI agent platform that helps brands serve their customers at scale.
What you'll do
- Own technical and product direction for Customer Agent, from architecture through production.
- Personally solve core agent platform challenges, including orchestration, evaluation, guardrails, memory and context, and failure handling.
- Ship and review code, establish reusable frameworks, mentor through design reviews, and shape the roadmap with cross-functional partners.
What they ask for
- Have architected, built, scaled, and supported a production agentic system end to end, including real orchestration, evaluations, guardrails, and non-deterministic failure handling.
- Have secured production agents against misuse and abuse and maintained their reliability as usage grows.
- Have set technical and product direction for a product area and championed work shipped and adopted by other teams.
- Remain hands-on in coding, architecture reviews, and production debugging; communicate trade-offs clearly across technical and executive audiences.
Nice to have
- Experience running a multi-tenant agent platform at production scale.
- Experience with 0-to-1 products, production evaluation systems, AI observability, or human-in-the-loop workflows for LLM-powered products.
Pay
$216,000 — $324,000 USD (base salary)
AI focus
Build and operate a production agentic customer-support system, including orchestration, evaluation, guardrails, memory and context, security, reliability, and failure handling.
Model-written summary · the original posting is authoritative