Senior Lead Backend Engineer - AI-Native Orchestration

Klaviyo; Boston (MA); On-site; USD 150,000 - 230,000; Full time

Job summary

Klaviyo in Boston is seeking a Sr. Lead Software Engineer to architect and scale the Core Orchestration platform, supporting high-traffic, low-latency services with extreme reliability.

You will drive AI-driven workflows, adopt AI-native practices, and partner with PMs, data science, design, and executives to shape long-term platform roadmaps.

This role requires 8+ years in distributed systems and a proven track record leading backend teams.

Qualifications

• 8+ years of professional software engineering experience focused on distributed systems.
• Experience shipping production LLM workflows or agentic frameworks.
• Strong knowledge of event-driven architectures and microservices.

Responsibilities

• Architect and scale Klaviyo’s Core Orchestration platform for high traffic and low latency.
• Drive the technical vision for AI-driven agentic workflows and automated decisions.
• Lead adoption of AI-native practices to boost productivity and delivery speed.
• Mentor teams and uphold high engineering standards through design reviews.

Skills

Backend leadership

AI & agentic systems

Distributed systems

Python & tooling

Cloud infra

Quality & evals

Cross-functional leadership

Tools

FastAPI

Django

Kafka

Celery

SQS

Redis

AWS

Kubernetes

Job description

Klaviyo in Boston is seeking a Sr. Lead Software Engineer to architect and scale the Core Orchestration platform, supporting high-traffic, low-latency services with extreme reliability.

You will drive AI-driven workflows, adopt AI-native practices, and partner with PMs, data science, design, and executives to shape long-term platform roadmaps.

This role requires 8+ years in distributed systems and a proven track record leading backend teams.