Klaviyo (NYSE: KVYO) is the only CRM built for B2C brands. Powered by its built-in data platform and AI insights, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster.
Surabhi Gupta, CTO, shares the details of Klaviyo, and what it’s like to work there.
What is Klaviyo?
Klaviyo is a unified marketing automation, analytics, and customer service platform designed for business-to-consumer brands. It integrates these distinct marketing tools into a single platform driven by an underlying data infrastructure to help companies understand their customer base and scale operations. The business services over 170,000 customers, which spans from small local shops to major enterprise brands like Mattel and Glossier. The central mission of the company is to empower brands to deliver the most relevant message to the correct consumer at the optimal time across every communication channel.
How Klaviyo Optimizes First-Party Data and AI
Klaviyo leverages its integrated data platform to capture consumer behaviors, such as when a buyer leaves an item in a digital shopping cart, enabling marketers to automatically deploy personalized re-engagement campaigns. The platform implements artificial intelligence to enhance email content creation, identify the perfect moments for customer outreach, and predict predictive purchasing trends. For example, the software can determine the probability of a consumer buying a specific secondary item within sixty or ninety days of their first purchase, allowing businesses to turn predictive data insights into immediate marketing actions.
Engineering Scale and Product Innovation at Klaviyo
Technical teams at Klaviyo operate at the intersection of high-volume data infrastructure and user-facing product design. The platform manages massive scale requirements, particularly during peak retail periods like Black Friday and Cyber Monday, where the infrastructure has successfully processed and sent over 420 million messages within a single hour. Engineering groups situated in Boston and the Bay Area focus on expanding these high-scale capabilities, rolling out new omnichannel communication tools, and embedding advanced artificial intelligence features directly into the core software architecture.
The Organizational Culture Within Klaviyo
Even as a publicly traded entity, Klaviyo operates with the mindset, speed, and agility of an early-stage startup. Technical professionals experience the advantages of working on foundational, new product lines while benefiting from an established distribution network of thousands of active clients who can test and adopt new features instantly. The internal culture emphasizes high agency, an ongoing growth mindset, and a deep integration of data science into product development, ensuring that artificial intelligence serves as a core product foundation rather than a simple marketing afterthought.
Why Professionals Choose to Build at Klaviyo
Klaviyo attracts talent by offering environments where individuals are encouraged to innovate and create new systems rather than simply maintaining legacy operations. The company provides a technical landscape centered around continuous learning and complex problem-solving during a major industry shift toward intelligence-driven software.


