Klaviyo & Retention Marketing Manager

About the company 21phi is a boutique Shopify & Hydrogen agency focused on premium ecommerce brands. They design, build, and optimize high-performance Shopify experiences for fast-growing DTC companies combining design, development, analytics, CRO, and long-term growth. The team values ownership, quality, and strong client relationships. About the role: The Klaviyo & Retention Marketing Manager will own the retention marketing function for a North American ecommerce client. Responsibilities include owning the client's Klaviyo account, planning and executing email campaigns, optimizing and building automated flows, creating customer segmentation strategies, running A/B tests and proposing new hypotheses, analyzing campaign performance and revenue attribution, coordinating with designers on email assets, working with developers on implementation when needed, communicating directly with the client, and continuously improving retention performance. Requirements: Strong hands-on experience with Klaviyo; solid understanding of Shopify and DTC ecommerce; experience with campaigns, flows, segmentation, and customer lifecycle marketing; strong analytical mindset; fluent English and Russian; ability to work independently and take ownership. Nice to have: Experience with North American ecommerce brands; familiarity with Amplitude, GA4, Shopify Analytics, Triple Whale, or similar analytics tools. What they offer: Remote-first team; long-term collaboration; direct communication with an established North American DTC brand; opportunity to build and own the retention marketing direction inside the agency; high level of autonomy and ownership; competitive compensation; opportunity to grow into a Head of Retention role as the agency expands. Compensation: Starting from USD 3,000/month depending on experience and value brought. How to apply: Send application to admin@21phi.com including CV or LinkedIn profile, a short introduction, examples of ecommerce brands worked with, description of role and results achieved, and expected monthly compensation.