Montserrat Sosa

Client Support & Operations Specialist | Product Advocate | Data Engineering & AI Student

Mexico

About

I am a results-oriented Support Operations Specialist with over 5 years of experience driving excellence in the technology and hospitality sectors. My career is defined by a passion for delivering exceptional customer experiences and a proven ability to manage complex B2B relationships.Currently, as a Merchant Experience Partner at DoorDash Technologies, I specialize in deep-dive investigations of complex issues—ranging from payments and integrations to fraud prevention—using high-level analytical tools like Sigma, Stripe, and Jira. I thrive in cross-functional environments, collaborating with Product, Engineering, and Finance teams to bridge product gaps and optimize internal workflows.

Experience

  • Product Advocate at Apollo.io
    Jul 2026 - Present · 1 mo

  • Merchant experience partner at DoorDash
    Jan 2026 - Jun 2026 · 6 mos

  • Support Operations Specialist/client support at Onyx CenterSource
    Apr 2022 - Dec 2025 · 3 yrs 9 mos

    Provided timely and accurate support via email and ticketing systems. Investigated and resolved complex commission and payment discrepancies. Documented cases thoroughly and escalated system issues to technical teams. Collaborated cross-functionally to improve workflows and documentation. Served as the primary contact for hotel and agency clients using SaaS platforms. Delivered onboarding and training sessions to drive adoption. Managed high-volume ticket queues maintaining 90%+ satisfaction. Created and optimized internal documentation in Confluence.

  • Customer Service Representative at TTEC
    Feb 2020 - Apr 2021 · 1 yr 3 mos

    Top 3 agent out of 300 for 8 consecutive months. Resolved payment disputes and fraud-related cases with high accuracy.

  • Client Support at Teleperformance
    May 2020 - Dec 2020 · 8 mos

    Handled customer inquiries and escalations regarding Kohl's credit card statements." Provided technical and navigation support for placing online orders. Resolved billing disputes, payment issues, and order delivery delays.