Meet the contributors who write and review practical guidance on telecom data, risk operations, data quality, and verification API workflows.
Director of Telecom Data & Verification
Ethan works on phone-number normalization, E.164 formatting, country-code rules, carrier metadata, and line-type detection. His editorial work turns verification signals into practical workflows for CRM cleaning, SMS preparation, lead review, and bulk data operations.
View author profileHead of Risk & Data Quality
Marcus focuses on identifying invalid, duplicated, outdated, or high-risk records before they enter CRM, messaging, fraud-review, or customer-acquisition workflows. He writes about responsible verification, data hygiene, lead screening, and the operational limits of phone and account signals.
View author profilePrincipal Verification API Engineer
Julian works on verification API integrations, batch jobs, CSV workflows, task polling, retry handling, result exports, and developer documentation. His guides explain how teams can integrate verification APIs safely and connect results with internal data systems.
View author profileZelNum articles are written around real verification, data-quality, and API implementation workflows. Each article displays its assigned author, publication date, update date, and a link to the author’s background and areas of responsibility.
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