Senior Klaviyo Technical Specialist

We're an Australian growth marketing agency running CRM programmes for 10+ ecommerce and DTC brands. We're hiring one senior Klaviyo technical specialist to own the build side of that entire portfolio. This is not a "I've set up a welcome series" role. You will be the person we go to when a flow is misfiring, an integration has broken, a new account needs transitioning in, or nobody can work out why revenue attribution looks wrong. You should know Klaviyo deeply enough to have opinions about it. You sit behind the scenes. Client calls are not required, though you're welcome in them if you want to be. Our strategists handle the client relationship and the strategy narrative. We have design team that does copy and design. Your job is to make it work technically, and to tell us when what we've asked for is the wrong build. Long term, full time, and we want to move quickly. What you'll do - Build and QA flows and campaigns across many accounts at once, to deadline - Own account transitions and migrations: new accounts in, old accounts out, without losing consent data, suppression history or send integrity - Set up new accounts from scratch, including integrations, tracking, sending domains and deliverability foundations - Troubleshoot integrations between Klaviyo and Shopify, SMS, subscriptions, reviews platforms and custom data sources - Build segments, custom metrics, profile properties and conditional logic that hold up under real-world data - Keep on top of Klaviyo releases and tell us what's worth adopting - Flag technical risk before it reaches the client Must-haves - 5+ years working in Klaviyo, hands on, daily - Agency or multi-account background: you've juggled many brands at once under fast turnarounds, not one in-house account - Shopify knowledge, including how Klaviyo actually syncs with it, and where that sync breaks - Genuine command of the details: flow filters versus trigger filters, smart sending and skip logic, deduplication across overlapping flows, dynamic segment logic, catalogue and back-in-stock behaviour, attribution windows and conversion settings - Deliverability fundamentals: SPF, DKIM, DMARC, dedicated versus shared sending, domain warming, sunset and engagement-based suppression - Account migration and transition experience, with a method you can describe - Experience with at least one other CRM or ESP beyond Klaviyo - Strong written English - Reliable overlap with our team and a clear communication rhythm - Klaviyo API, webhooks and server-side events - Klaviyo SMS, and other SMS platforms - Subscriptions and reviews platforms - Zapier, Make or n8n - HTML and CSS for email templates Engagement - 20 - 40 hours per week, ongoing - Fully remote, anywhere in the world - Starting as soon as possible