Lead People Systems Engineer
Core
Lead People Technology Engineer building AI-first systems to transform employee lifecycle operations (hiring, onboarding, performance) at Klaviyo.
Role type
Senior IC machine-learning engineer (people systems)
Builds
AI-powered workflows, copilots, and agents for People Operations
Domain
SaaS / People Technology / AI
Deliverable
production ML models
Required skills
Python, SQL, LLM system design, LangChain, LangGraph, enterprise SaaS integration, scalable system architecture
Preferred skills
HRIS/ATS experience, workflow automation platforms, high-growth SaaS environment experience
Technologies
OpenAI, Claude, Gemini, Workday, Greenhouse, Sana
Responsibilities
Design and build AI-powered workflows and agents for the employee lifecycle; Architect systems integrating with SaaS HR/ATS platforms; Establish best practices for prompt engineering, LLM orchestration, and AI observability; Define success metrics for AI-driven efficiency gains; Enable People teams to use AI tools via reusable frameworks and training; Partner with Security and Legal on responsible AI governance.
Seniority
Senior, hands-on IC