klaviyo
Software Engineer II - Growth
At a Glance
- Location
- Boston, Massachusetts, United States
- Posted
- 2026-07-21T14:17:22-04:00
Key Requirements
Domain Knowledge
- Engineering
Requirements
Have a background in full stack software engineering with experience building and improving products with an emphasis on user-facing features, along with the APIs and infrastructure to support them.
Passionate about growing and improving a product on a daily basis using a data driven mindset.
Experienced with A/B Testing products with metric based goals to improve user experience and customer acquisition and success (nice to have)
Demonstrated ability and success in using AI-driven software delivery practices and methods and/or a willingness and excitement to learn.
Thrives in an entrepreneurial type environment that is fast paced, customer focused, and strategic.
Responsibilities
In this role, you will implement user-experience improvements across the Klaviyo product, especially in areas that affect new customers.
You will design and implement A/B tests to validate ideas, and interpret the results of these tests to inform iterative improvements to the product.
You will collaborate with marketing, data-science, sales, and engineering teams to discover areas for improvement, as well as engaging with customers directly to learn more about how we can better serve their needs.
You will help us improve our experimentation and development processes, and mentor other engineers on the team.
You will clearly define the goal, constraints, and context for AI agents, while remaining responsible for the correctness of the implementation, with a focus on security, performance, and maintainability.
About the Company
Klaviyo is a world-leading marketing automation platform dedicated to accelerating revenue and customer connection for online businesses using the channels they own like email, web and mobile. Enabling brands to leverage these owned marketing channels, Klaviyo makes it easy to store, access, analyze and use transactional and behavioral data to power highly-targeted customer and prospect communications. The company’s hybrid customer-data and marketing-platform model allows companies to grow by fostering direct, high-fidelity relationships with customers, without giving up their valuable data to Facebook or Amazon. In 2020, Klaviyo reached coveted unicorn status with a robust Series C of $200m at $4.15B valuation. Innovative companies like Unilever, Custom Ink, and Huckberry sell more with Klaviyo. Learn more at
www.klaviyo.com
.