Lead Software Engineer - Sending Platform
Klaviyo
About this role
A Lead Software Engineer on Klaviyo’s UCM team is a hands-on technical leader responsible for guiding the team that builds the company’s core messaging platform. The role centers on shaping technical strategy for high-throughput, microservices-based distributed systems that operate at global scale. It focuses on driving platform scalability, reliability, and AI-enabled improvements across Klaviyo’s message delivery stack.
Skills
About Klaviyo
klaviyo.comKlaviyo is a B2C CRM and marketing automation platform that unifies AI-powered email and SMS to help ecommerce brands drive growth and retention. It uses customer data, advanced segmentation, and automation flows to deliver personalized, omnichannel experiences across email, SMS, WhatsApp, and more — including AI-driven capabilities via K:AI Agents. Klaviyo emphasizes measurable results with analytics, testing, and integrations with major ecommerce platforms to boost revenue and lifetime value. Companies use it to build targeted lifecycle campaigns, personalized messaging, and data-driven retention strategies at scale.
Recent company news
MarketBeatVictory Capital Management Inc. Has $12.02 Million Holdings in Klaviyo, Inc. $KVYO
8 hours ago
Digital Commerce 360Klaviyo and Shopify announce deeper product integration
1 day ago
Finviz - Stock ScreenerKlaviyo (KVYO) Announces $500M Share Buyback Program
4 days ago
Destination CRMKlaviyo and Shopify Deepen Integration
3 days ago
Investing.com NigeriaKlaviyo Co-CEO Bialecki sells $3.7m in Series A common stock
2 days ago
About Klaviyo
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Leadership Team
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
Unlock Company Insights
View leadership team, funding history,
and employee contacts for Klaviyo.
Salary
$188k – $282k
per year
More jobs at Klaviyo
Similar Jobs
Engineering Manager Polaris Platform
Rubrik
Staff Back-end Engineer I (Gateway Services)
Coupang
Director of Engineering, Infrastructure & Platform
Alchemy
Senior Platform Software Engineer I
Braze
Principal, Performance and Capacity Engineer (Infrastructure & Platform)
Workday
Sr. Staff Platform Engineer
Synthesis Health