Worked as a CRM Specialist and Campaign Developer, managing end-to-end execution of data-driven marketing campaigns for telecom clients. Designed and delivered multi-channel campaigns (SMS, email, push, and in-app) focused on customer acquisition, retention, upsell, and cross-sell. Developed customer segmentation strategies using behavioral and transactional data to enable personalized communication and improve customer engagement. Monitored campaign performance, conducted A/B testing, and optimized customer journeys to maximize ROI and conversion rates while identifying early churn...