Senior HubSpot CRM & Marketing Hub Expert Needed - No agency

We are looking for a senior HubSpot specialist with deep hands-on experience in both HubSpot CRM and Marketing Hub. This is not a general email marketing role. Please apply only if you have directly managed and optimized HubSpot portals, contact databases, marketing contacts, lists, workflows, email campaigns, subscriptions, bounces, and reporting. Project scope: * Audit the current HubSpot CRM and Marketing Hub setup * Review contact properties, lists, segmentation, and marketing contact status * Analyze HubSpot email campaigns, open rates, click rates, bounces, and unengaged contacts * Review workflows, suppression rules, subscription types, and unsubscribe handling * Check HubSpot sending domain and email authentication setup * Compare current HubSpot performance with previous Mailchimp campaign results * Identify configuration, data, or campaign issues and provide a clear improvement plan * Keep HubSpot as the primary CRM and improve the existing system before recommending another platform Required experience: * Advanced HubSpot CRM administration * Advanced HubSpot Marketing Hub experience * HubSpot lists, workflows, contact properties, and lifecycle management * HubSpot marketing email and campaign reporting * CRM database cleanup and segmentation * Email deliverability, including SPF, DKIM, and DMARC * Mailchimp experience for performance comparison * Bounce, unsubscribe, suppression, and unengaged contact management Please include: 1. How many HubSpot portals you have managed 2. Your HubSpot certifications, if any 3. A specific HubSpot CRM or Marketing Hub project you completed 4. Your experience diagnosing poor email performance inside HubSpot Please do not apply if your experience is mainly general email marketing without strong hands-on HubSpot CRM and Marketing Hub experience.