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.
Assist in pre-migration audits and discovery, ensuring current ESP and contact database audits are thorough.
Manage data migration and list management tasks to ensure compliance with GDPR and CAN-SPAM regulations.

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.

Proficiency in spoken and written English at an advanced level is required for this role.
This is an independent contractor position.

ESP Migration, Platform Integration Architect

Key skills