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Senior Software Engineer, Internationalisation Platform at Klaviyo - ApplyBlast

Senior Software Engineer, Internationalisation Platform

Klaviyo

9 months ago

3.3 on Glassdoor

London, United Kingdom

Hybrid

Full Time

Senior

1 applicant

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About this role

Senior Software Engineer on Klaviyo’s Internationalisation Platform team focused on building and improving infrastructure and services that enable localization, translation pipelines, and multi-currency features used across the company. The role supports expanding Smart Translations and delivering LLM-driven translation workflows, while working within a highly technical, cross-functional environment that impacts frontend and backend systems.

Skills

About Klaviyo

klaviyo.com

Headquarters

Boston, Massachusetts, United States

Company Size

1001-5000 employees

Founded

2012

View Profile

Klaviyo 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.