Klaviyo & Retention Marketing Manager

About the company

21phi is a boutique Shopify & Hydrogen agency focused on premium ecommerce brands.

We design, build, and optimize high-performance Shopify experiences for fast-growing DTC companies. Our work combines design, development, analytics, CRO, and long-term growth. We're a small senior team that values ownership, quality, and strong client relationships over agency bureaucracy.

We're currently expanding our retention marketing capabilities and looking for someone who wants to become a core part of the team.

About the role

We're looking for a Klaviyo & Retention Marketing Manager to own the retention marketing function for one of our North American ecommerce clients.

This is not just an email production role.

You'll be responsible for improving customer retention, increasing revenue through email marketing, working directly with the client, and collaborating with our designers and developers to launch high-quality campaigns.

What you'll do

• Own the client's Klaviyo account.
• Plan and execute email campaigns.
• Optimize and build automated flows.
• Create customer segmentation strategies.
• Run A/B tests and propose new hypotheses.
• Analyze campaign performance and revenue attribution.
• Coordinate with designers on email assets.
• Work with developers on implementation when needed.
• Communicate directly with the client.
• Continuously improve 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 we 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 your experience and the value you bring.

How to apply

Send your application to admin@21phi.com and include:

• Your CV or LinkedIn profile.
• A short introduction about yourself.
• Examples of ecommerce brands you've worked with.
• A brief description of your role and the results you achieved.
• Your expected monthly compensation.