Callistus Hannah
@callistushannah
Remote-ready customer service professional specializing in CRM-driven retention, satisfaction, and sales growth.
NigeriaWhat I'm looking for
I’m a remote-ready customer service professional with 3+ years driving measurable gains in customer satisfaction, retention, and sales performance across hospitality, retail, and e-commerce. I focus on fast, professional resolutions and consistent follow-through that protects customer trust.
In my most recent role, I resolved guest inquiries and service requests with an average response time under 1 hour, de-escalating issues to preserve retention and positive reviews. I also partnered with cross-functional teams to streamline service delivery and maintained accurate, error-free guest and transaction records to support daily operations.
Previously, I delivered a 50%+ improvement in customer satisfaction scores by resolving 20–50 daily customer inquiries via email and chat with on-time issue resolution. I also increased sales revenue by 25% by identifying upsell opportunities through CRM data analysis and personalized recommendations, strengthening repeat business by 25% through proactive, scheduled follow-ups—fully remote and self-directed.
Experience
Work history, roles, and key accomplishments
Customer Service Associate
FUNAAB Guest House
Feb 2026 - Present (5 months)
Resolved guest inquiries and service requests with an average response time under 1 hour, maintaining high satisfaction ratings. De-escalated and resolved guest complaints, streamlined service delivery with cross-functional teams, and maintained accurate guest and transaction records.
Customer & Sales Representative
Darin Fabrics and Styles
Jan 2023 - Dec 2025 (2 years 11 months)
Drove a 50%+ increase in customer satisfaction by resolving 20–50 daily inquiries via email and chat with consistent, on-time issue resolution. Increased sales revenue by 25% through CRM-driven upsell opportunity identification, managed end-to-end order processing and inventory tracking, and supported retention with proactive follow-ups.
Education
Degrees, certifications, and relevant coursework
Moshood Abiola Polytechnic
Higher National Diploma (HND), Business Administration
Earned a Higher National Diploma (HND) in Business Administration from Moshood Abiola Polytechnic in 2023.
Tech stack
Software and tools used professionally
Availability
Location
NigeriaAuthorized to work in
Job categories
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