Senior Conversion Tracking & API Engineer

Remote — International Hire ONLY | Contract Full-Time About TNT Growth TNT Growth is a performance-driven growth marketing agency that embeds directly into our clients' businesses to produce measurable outcomes across paid media, creative strategy, and analytics. We drive impact! About the Role We are looking for a senior Conversion Tracking & API Engineer who can independently own complex, production-grade tracking across browser, server, CRM, and ad-platform APIs. You combine deep backend and data-integration expertise with a practical understanding of paid-media measurement and strong client-facing communication. This is not a tag-only or passive back-end role. You will work directly with Growth Managers, Client Success, client engineering teams, and external platforms. You will own the path from consented browser and session capture through forms and CRM lifecycle events, event processing, ad-platform delivery, diagnostics, reconciliation, and monitoring. If you can build reliable systems, prove that they work end to end, and explain them clearly to non-engineers, this role was designed for you. What You'll Do Strong Communication Proactively flagging implementation gaps, risks, and unverified assumptions before a campaign goes live — and separating confirmed root cause from a working hypothesis Writing implementation and QA summaries that a Growth Manager without an engineering background can read, understand, and act on Responding to questions in Slack within a reas