Senior Software Engineer, Asynchronous Processing

Klaviyo(2 days ago)

HybridFull TimeSenior$148,000 - $222,000Engineering

About this role

Klaviyo is looking for a Senior Platform Engineer to design, build, and operate a high-scale, event-driven backbone that powers their products. The role involves architecting resilient, scalable systems for asynchronous workloads, primarily utilizing technologies like Golang, Python, Kafka, Pulsar, and AWS. The engineer will collaborate with teams to create reliable, self-service infrastructure that handles massive data volumes efficiently.

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Required Skills

Python
Golang
Kafka
Pulsar
AWS
Kubernetes
Terraform
FastAPI
Protobuf
SQS

Qualifications

BA or BS Degree in Computer Science, related field, or equivalent experience

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.

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