Michael Guillen
@michaelguillen
Customer-success focused sales developer and administrative professional driving retention and revenue growth.
What I'm looking for
I am a motivated customer-success and sales developer professional with hands-on experience managing large account portfolios and high-volume pipelines across Spain and other European markets. I deliver measurable results in adoption, retention, and revenue through data-driven follow-up and cross-functional coordination.
At Roomonitor I managed 200 client accounts across multiple countries, drove adoption and performance tracking, and protected recurring revenue through conflict resolution and retention efforts. Previously, I converted leads into customers at Ukio with a 30% conversion rate, maintained fast response times, and helped exceed monthly revenue targets.
I combine strong administrative skills, proficiency with CRMs and Excel, and a results-oriented mindset to optimize processes, improve customer satisfaction, and support teams in dynamic environments. I am recognized for problem-solving, a strong work ethic, and consistent performance on sales and service metrics.
Experience
Work history, roles, and key accomplishments
Customer Success Manager
Roomonitor
Jan 2025 - Present (1 year 1 month)
Managed a portfolio of 200 client accounts across Spain, UK, Portugal, and France over four months, driving adoption, performance tracking and retention to protect recurring revenue.
Sales Developer & Administrative Assistant
Ukio
Jan 2024 - Jan 2025 (1 year)
Converted leads into customers with a 30% conversion rate and managed a pipeline of 50+ prospects, maintaining <2 hour response times and contributing to 15% above monthly revenue targets.
Customer Support Specialist
Guess Europe Sagl
Jan 2022 - Jan 2024 (2 years)
Handled e-commerce administrative tasks, refunds, customs documentation and escalations while improving internal processes to boost efficiency and maintain service quality.
Customer Service Representative
Startek
Jan 2020 - Jan 2022 (2 years)
Provided technical, sales and billing support for Xfinity residential and mobile services to US customers, achieving 90%+ CSAT and exceeding sales targets by 20%.
Education
Degrees, certifications, and relevant coursework
Universidad Nacional Autónoma de Honduras
Bachelor's Degree, International Trade
2018 - 2022
Bachelor’s Degree in International Trade completed at UNAH from 2018 to 2022.
Availability
Location
Authorized to work in
Salary expectations
Social media
Job categories
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