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CSM For Klaviyo

Remote

Full-time

Client Success

This role is for you if you have carried client accounts before and liked it. You will be the strategic anchor for your accounts, coordinating Klaviyo Managers, copywriters and designers so campaigns and flows go out on time, on brand and on target. This is not a check-in and report role. Mach33 is a performance-driven retention marketing agency where creativity meets accountability. We run Klaviyo email, SMS and subscriptions for ecommerce brands.

Client management

  • Own client communication that is timely, professional and proactive across all accounts

  • Handle client questions, reporting requests and performance updates with clarity and confidence

  • Build strong client relationships that reduce churn and increase trust in the agency

Campaign and flow execution

  • Plan and maintain structured campaign calendars across multiple client accounts

  • Delegate tasks to copywriters and designers and track execution through to delivery

  • Review email and SMS campaigns before scheduling, including copy, design, segmentation and logic

  • Build, audit and refine Klaviyo flow structures and strategies

  • QA flow copy and setup inside Klaviyo to ensure technical accuracy

Performance and reporting

  • Monitor campaign and flow performance: open rates, click rates, revenue and deliverability

  • Identify performance gaps and surface actionable recommendations to the team and the client

  • Make sure all deliverables meet quality standards and are submitted on time, every time

What we are looking for

  • 2+ years in email marketing, account management or project management, agency background strongly preferred

  • 2+ years of hands-on Klaviyo experience across flows, campaigns, segmentation and reporting

  • Proven ability to manage multiple client accounts at once without dropping the ball

  • A strong eye for copy, design alignment and campaign logic, so you catch errors before they go live

  • Comfortable reading and communicating email performance data to non-technical clients

How you work

  • Client-first: you treat every account like it is your most important one

  • You take ownership. If something slips, you catch it, own it and fix it

  • A clear, confident communicator in writing, on calls and across internal teams

  • Organized and structured, using systems to stay on top of complexity

  • Proactive rather than reactive, anticipating problems before they reach the client

  • Strong delegation skills: you know how to brief, follow up and hold the team accountable

Why Mach33

You will not be micromanaged or stuck in a bureaucratic loop. You will have real ownership over your accounts, work with a sharp team that cares about results, and contribute directly to client growth. If you take pride in execution and want to be measured on outcomes rather than output, this is the right place.

How to apply

We would love to hear from you. Apply through the form and tell us about the accounts you have run.

Apply for this role

Applications go straight to our HR team. We read every one.