Lead Software Engineer - Sending Platform

Klaviyo(18 days ago)

HybridFull TimeSenior$188,000 - $282,000Engineering

About this role

A Lead Software Engineer on Klaviyo’s UCM team is a hands-on technical leader responsible for guiding the team that builds the company’s core messaging platform. The role centers on shaping technical strategy for high-throughput, microservices-based distributed systems that operate at global scale. It focuses on driving platform scalability, reliability, and AI-enabled improvements across Klaviyo’s message delivery stack.

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Required Skills

Python
Go
Microservices
Distributed Systems
System Design
AWS
Terraform
Redis
MySQL
Redshift

+2 more

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.