ESP Migration & Platform Integration Architect

About the role

We are a tech-enabled growth firm-at the intersection of marketing, consulting & data intelligence-igniting revenue and brand recognition for leading and emerging companies around the world. As a people-first firm, we value diversity in backgrounds and experiences. We strongly believe our people and culture are key to our success. Our vision is to be recognized as the most valued and respected private growth marketing firm in the world-with a scalable brand, culture and services. Our mission is to power the relentless pursuit of growth and redefine what's possible through a team of growth-obsessed experts who demand innovation and results - driven by integrity, autonomy, and grit. As a full-service growth marketing firm, we offer best-in-class services including: SEO, Content Marketing, Paid Media, Social Media Marketing, Programmatic + CTV, Public Relations, Influencer Marketing, Email + SMS, Conversion Rate Optimization, Retail Marketing, and Creative. Here at Power Digital, we are hyper-focused on helping brands drive revenue growth and brand recognition, ultimately driving irrefutable value for our clients. At the heart of Power Digital is our proprietary technology, nova, which analyzes businesses through first-party data, simplifying investment planning for marketing and diligence in M&A--putting marketers in a strategic seat at the table--and providing value in unparalleled ways. Managing billions in media, our dynamic team--of consultative marketers, creatives, analysts and technologists--challenge traditional ways of planning and measurement through meticulous testing and data science across each milestone of the customer journey. ***Proficiency in spoken and written English at an advanced level is required for this role. ***This is an independent contractor position. A day in the life: Power Digital is looking for a hands-on Email Migration & MarTech Consultant to own the full lifecycle of email platform migrations from technical infrastructure and ESP onboarding to integration architecture, data migration and deliverability configuration. You will serve as the subject matter expert and project owner for client email migrations from platforms like Salesforce Marketing Cloud, HubSpot, Iterable, Braze, Mailchimp, ActiveCampaign, Drip, and others to Klaviyo managing everything from DNS/domain configuration and DKIM/SPF/DMARC setup to integration builds, identity resolution, list migrations, automation architecture, cutover sequencing and handoff. This includes every phase of the migration engagement end-to-end: discovery, technical build, QA, go-live, and client handoff. The right candidate thrives in complexity, moves with urgency, and knows how to translate technical requirements into clear client deliverables.

Responsibilities

• End-to-End Email & SMS Migration Ownership
• 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
• Pre-Migration Audit & Discovery
• Current ESP audit: document all active flows, campaign cadences, segments, suppression lists, custom fields, and data schema from the source platform
• Contact database audit: total addressable list size, engagement health, bounce/spam complaint history, hard suppression list, and consent/opt-in source documentation
• Tech stack mapping: inventory every tool connected to the current ESP (eComm platform, CRM, loyalty, helpdesk, reviews, POS, CDP) before migration begins
• Deliverability baseline analysis: pull sender reputation data from the legacy platform (Google Postmaster, SNDS, blacklist checks) to understand what is being inherited
• Source Platform Offboarding
• Export all contacts, custom properties and segments from the legacy platform in correct format for destination ingestion
• Document legacy flow logic before the migration: triggers, filters, time delays, conditional splits, A/B test configurations
• Extract historical performance data (open/click benchmarks) to inform Klaviyo warming strategy and baseline benchmarking
• Coordinate legacy platform subscription/contract timing against Klaviyo go-live to prevent dual-billing data gaps
• Define and execute legacy flow deactivation sequencing to eliminate risk of duplicate sends or missed sends during cutover
• Klaviyo Account Governance & Setup
• Define organization-level account structure: single account vs. multi-brand/multi-account setup, sub-account architecture
• Configure user roles and permissions: internal client users, agency access tiers, admin vs. manager vs. viewer
• Create and document API keys: private/public keys, scoped access per integration and key ownership registry
• Advise on bi

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