Senior Software Engineer- Marketing Agent

Klaviyo(1 month ago)

RemoteFull TimeSenior$152,000 - $228,000Engineering

About this role

A Senior Software Engineer on Klaviyo’s Marketing Agent team will design and build backend AI-powered systems that autonomously create and execute marketing strategies for customers. The role focuses on delivering robust, maintainable, high-quality systems with low-latency outputs and involves close collaboration with product, AI engineering, and infrastructure teams. This position offers significant growth opportunities and expects the engineer to mentor junior team members and influence engineering practices.

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Required Skills

Python
FastAPI
Django
MySQL
Postgres
AWS
AI
LLMs
System Design
Backend Development

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About Klaviyo

klaviyo.com

Klaviyo is a B2C CRM and marketing automation platform that unifies AI-powered email and SMS to help ecommerce brands drive growth and retention. It uses customer data, advanced segmentation, and automation flows to deliver personalized, omnichannel experiences across email, SMS, WhatsApp, and more — including AI-driven capabilities via K:AI Agents. Klaviyo emphasizes measurable results with analytics, testing, and integrations with major ecommerce platforms to boost revenue and lifetime value. Companies use it to build targeted lifecycle campaigns, personalized messaging, and data-driven retention strategies at scale.