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Lead Engineer, Applied AI (Customer Agent)

KlaviyoBoston, MAEngineering
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Salary
$176K — $264K USD
Job type
Full-time
Experience
Lead
Posted
8 Oct 2026
Status
Open · checked 7d ago

About this role

Lead Engineer, Applied AI (Customer Agent) is a full-time, in-office position located in Boston, Massachusetts, within the Klaviyo engineering team. This role suits an experienced hands-on technical leader who wants to build zero-to-one conversational AI systems and shape product direction.

Role Overview

The Lead Engineer, Applied AI (Customer Agent) position is based in Boston, MA, and operates on an in-office model. The person in this role sets the technical and product direction for a core area of the Customer Agent conversational AI system. This position combines the speed and ownership of a startup environment with the scale of an established technology company.

Key Responsibilities

Set the technical and product direction for a core area of the Customer Agent from architecture through production.
Tackle complex technical challenges involving orchestration, evaluation, guardrails, memory, context, and failure handling for non-deterministic systems.
Write and ship code, review designs, and make critical technical decisions.
Define engineering patterns and mentor team members through design reviews.
Partner with product, design, data science, and go-to-market leaders.
Evaluate and integrate emerging AI technologies into production.

Requirements

Built, scaled, and supported production agentic systems including orchestration, evaluations, guardrails, and non-deterministic failure handling.
Experience managing operational reliability and security for agents in production as usage scales.
Proven history of owning technical and product direction for a significant functional area.
Hands-on experience writing code, reviewing architecture decisions, and debugging production issues.
Experience communicating complex technical trade-offs across engineering and product audiences.

Nice to Have

Experience working on a multi-tenant agent platform at production scale.
Experience building zero-to-one products or working in startup environments.
Track record with production evaluation systems, AI observability, or human-in-the-loop workflows for LLM-powered products.

Skills and Tools

Conversational AI systems
Large Language Models (LLMs)
Production evaluation frameworks
Agent orchestration and guardrails

Salary and Benefits

Base salary range of $176,000 to $264,000 USD, determined by factors such as skills, relevant experience, education, training, and work location.
Total compensation package may include annual cash bonus plans, equity, sign-on payments, and health, welfare, and wellbeing benefits.

About the Company

Klaviyo builds AI systems that power how brands run their businesses and make first-party data accessible and actionable. The company emphasizes a workplace that values unique backgrounds, experiences, and perspectives while supporting employees with comprehensive benefits.

How to Apply

Candidates should apply directly on the official Klaviyo careers page.

Skills and tech stack

LLMsConversational AILLM

Questions candidates ask

Where is the Lead Engineer, Applied AI (Customer Agent) position located?

The position is based in Boston, MA, and is an in-office role requiring up to 10% travel.

What is the salary range for this role?

The base salary range for US locations is $176,000 to $264,000 USD.

What team does this role belong to?

This role belongs to the Customer Agent team within Klaviyo's engineering organization.

Is this a management role or a hands-on role?

This is a hands-on technical role where you will write code, review architecture decisions, and debug production issues yourself while mentoring through design reviews rather than direct management.

How should I submit my application?

You should apply on the official Klaviyo careers page.

Ready to apply?

The application is on the official Klaviyo careers page.

Apply on company site