Own the full project lifecycle for email platform migrations from discovery through go-live and post migration QA
Lead client kick-offs, migration timelines, stakeholder communications and milestone tracking across concurrent projects
Serve as the point of contact for all technical migration questions from account teams and clients
Document migration decisions, integration specs, and handoff notes in a repeatable, scalable format
Conduct pre-send technical audits and inbox placement seed tests before first live send
Develop and oversee IP/domain warming schedules (1–3 months of structured warming depending on engagement tier)

3–6+ years of hands-on experience in lifecycle and CRM marketing technology, ESP migrations, and/or martech implementation
Deep, proven expertise in at least two of the following ESPs: Klaviyo, Salesforce Marketing Cloud, HubSpot, Iterable, Braze, Mailchimp, Attentive, or similar
Hands-on experience configuring DNS records and email authentication protocols
Experience with sending domain setup, subdomain delegation, and tracking link configuration
Proven ability to manage API integrations, webhook configurations, and custom event setups
Experience with subscriber data migrations including schema mapping, backfill logic, and suppression management
Strong IP warming knowledge: including warming schedules, list segmentation strategy, and reputation monitoring
Experience in an agency or client services environment, managing multiple concurrent client projects as agreed upon in contract
Experience auditing and extracting data from legacy ESPs (Mailchimp, SFMC, HubSpot, ActiveCampaign, Drip, Iterable, or Braze) as the source platform
Experience defining identity resolution strategy and handling duplicate profile logic during migrations
Ability to translate legacy flow/journey logic into equivalent Klaviyo automation architecture
Experience building and executing structured checklists for integration validation and testing
Ability to own a cutover plan including legacy platform deactivation and go-live sequencing

ESP Migration – Platform Integration Architect

Key skills