Lead Engineer, Applied AI (Customer Agent)

About Klaviyo Klaviyo (NYSE: KVYO) is the autonomous B2C CRM. Powered by its built-in data platform and AI, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster. Klaviyo (CLAY-vee-oh) helps over 193,000 brands like Mattel, Glossier, Daily Harvest, and Liquid Death deliver 1:1 experiences at scale, improve efficiency, and drive revenue.

Klaviyo

Klaviyo is the autonomous CRM for B2C brands, built to turn what you know about your customers into real growth.

K

klaviyo.com

1,001-5,000 employees

Marketing Services

Boston, Massachusetts

2012

Public Company

179k LinkedIn followers

Raised $1.3B

• Set the technical and product direction for a core area of Customer Agent,
• from architecture through production, and contribute to the direction of the
• platform overall.
• Take on the hardest technical problems in your area: orchestration,
• evaluation, guardrails, memory & context, failure handling for
• non-deterministic systems.
• Write and ship code, review designs, and make the hard calls in your area
• when there’s no obvious right answer.
• Define patterns that other engineers adopt, and mentor through design reviews
• rather than direct management.
• Partner with product, design, data science, and go-to-market leaders to shape
• what gets built, not just how it’s built.
• Evaluate emerging AI technologies and bring the ones worth betting on into
• production.

Required

• You've built, scaled, and supported production agentic systems, not just
• prototyped them: real orchestration, evals, guardrails, and non-deterministic
• failure handling. You've owned your part of one through launch, incidents,
• and the operational reality after the demo.
• You've learned the hard lessons that only come from running agents in
• production: securing them against misuse and abuse, and the operational scar
• tissue of keeping a non-deterministic system reliable as usage grows.
• You've owned technical and product direction for a significant area before,
• not just your own component, and you can point to something you designed and
• championed that shipped and that other engineers built on.
• You're hands-on: writing code, reviewing your own and others’ architecture
• decisions, and debugging production issues yourself, not delegating the
• hardest problems away.
• Your patterns and designs are reused by other engineers, and you've unblocked
• many others’ projects, not just your own.
• You communicate complex technical trade-offs clearly across engineering and
• product audiences, and you can turn an undefined problem into a plan others
• rally behind.

Preferred

• Experience working on a multi-tenant agent platform at production scale,
• where external customers configure their own agent behavior on shared
• infrastructure.
• Experience building 0-to-1 products or working in startup environments.
• A track record with production evaluation systems, AI observability, or
• human-in-the-loop workflows for LLM-powered products.
• It is unlawful in Massachusetts to require or administer a lie detector test as
• a condition of employment or continued employment. An employer who violates this
• law shall be subject to criminal penalties and civil liability.
• Our salary range reflects the cost of labor across various U.S. geographic
• markets. The range displayed below reflects the minimum and maximum target
• salaries for the position across all our US locations. The base salary offered
• for this position is determined by several factors, including the applicant’s
• job-related skills, relevant experience, education or training, and work
• location.

• participation in the company’s annual cash bonus plan, variable compensation
• (OTE) for sales and customer success roles, equity, sign-on payments, and a
• comprehensive range of health, welfare, and wellbeing benefits based on
• eligibility.
• Your recruiter can provide more details about the specific salary/OTE range for
• your preferred location during the hiring process.
• Base Pay Range For US Locations
• $176,000—$264,000 USD
• This role may require up to 10% travel for purposes such as new hire onboarding,
• client or partner work if applicable, team meetings, and industry events. Travel
• is coordinated in advance.
• We’re Klaviyo (pronounced clay-vee-oh). We empower creators to own their destiny
• by making first-party data accessible and actionable like never before. We see
• limitless potential for the technology we’re developing to nurture personalized
• experiences in ecommerce and beyond. To reach our goals, we need our own crew of
• remarkable creators—ambitious and collaborative teammates who stay focused on
• our north star: delighting our customers. If you’re ready to do the best work of
• your career, where you’ll be welcomed as your whole self from day one and
• supported with generous benefits, we hope you’ll join us.
• AI fluency at Klaviyo includes responsible use of AI (including privacy,
• security, bias awareness, and human-in-the-loop). We provide accommodations as
• needed.
• By participating in Klaviyo’s interview process, you acknowledge that you have
• read, understood, and will adhere to our Guidelines for using AI in the Klaviyo
• interview Process [https://www.klaviyo.com/careers/ai-guidance]. For more
• Klaviyo is committed to a policy of equal opportunity and non-discrimination. We
• do not discriminate on the basis of race, ethnicity, citizenship, national
• origin, color, religion or religious creed, age, sex (including pregnancy),
• IMPORTANT NOTICE: Our company takes the security and privacy of job applicants
• very seriously. We will never ask for payment, bank details, or personal
• financial information as part of the application process. All our legitimate job
• postings can be found on our official career site. Please be cautious of job
• offers that come from non-company email addresses (@klaviyo.com), instant
• messaging platforms, or unsolicited calls.
• By clicking "Submit Application" you consent to Klaviyo processing your Personal