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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

This role suits an experienced engineer with a background in building and scaling production-ready agentic systems who wants to lead technical and product direction in Boston. The Lead Engineer, Applied AI (Customer Agent) position at Klaviyo is an in-office role located in Boston, Massachusetts, focusing on conversational AI infrastructure.

Role Overview

Klaviyo is hiring a Lead Engineer, Applied AI (Customer Agent) to join its team in Boston, MA. This in-office position involves building and scaling conversational AI systems that allow brands to serve customers at scale. The role requires setting technical and product direction for a core area of the Customer Agent product from architecture to production while remaining hands-on with difficult technical challenges.

Key Responsibilities

Determine technical and product direction for a core area of Customer Agent, spanning from architecture to production.
Tackle complex technical problems including orchestration, evaluation, guardrails, memory, context, and failure handling for non-deterministic systems.
Write and ship code, review system designs, and make critical engineering decisions.
Establish patterns for other engineers to adopt and mentor team members through design reviews.
Collaborate with product, design, data science, and go-to-market leaders to shape product development.
Assess emerging AI technologies and integrate viable solutions into production environments.

Requirements

Built, scaled, and supported production agentic systems involving real orchestration, evaluations, guardrails, and non-deterministic failure handling.
Experience managing operational realities of running agents in production, securing them against misuse, and maintaining reliability.
Proven history of owning technical and product direction for a significant area and shipping designs used by other engineers.
Hands-on experience writing code, reviewing architecture decisions, and debugging production issues.
Clear communication skills for conveying technical trade-offs across engineering and product audiences.

Nice to Have

Background working on a multi-tenant agent platform at production scale.
Experience building 0-to-1 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

AI Orchestration
Evaluation Frameworks
Guardrails and Security
Memory and Context Management
Non-Deterministic Failure Handling
LLM-Powered Products

Salary and Benefits

The base pay range for U.S. locations is $176,000 to $264,000 USD, determined by factors such as job-related skills, experience, education, and location. Total compensation may include an annual cash bonus plan, variable compensation, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits.

About the Company

Klaviyo builds AI systems that power how ecommerce brands run their businesses by making first-party data accessible and actionable. The company emphasizes a collaborative workplace that values unique backgrounds and perspectives.

How to Apply

Interested candidates should apply directly on the official Klaviyo careers page.

Skills and tech stack

Questions candidates ask

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

The position is based in Boston, MA and is an in-office role.

What is the salary range for this position?

The base pay range for U.S. locations is $176,000 to $264,000 USD.

Is travel required for this job?

The role may require up to 10% travel for onboarding, client or partner work, team meetings, and industry events, which is coordinated in advance.

What kind of systems will the engineer work on?

The engineer will work on conversational AI systems and agentic products that let brands serve their customers at scale.

Does the position involve direct management responsibilities?

The role mentors through design reviews rather than direct management.

Ready to apply?

The application is on the official Klaviyo careers page.

Apply on company site