Mariela Lyons
@marielalyons
International negotiator and logistics professional specializing in shipment tracking, carrier coordination, and invoice accuracy.
What I'm looking for
I’m a dynamic International Negotiator with 11 years of experience in shipment tracking and transportation logistics, focused on driving efficiency and visibility across U.S. supply chain operations. I’m known for delivering high accuracy in tracking data and enhancing workflow efficiency through proactive monitoring and collaboration with cross-functional teams.
In my most recent role with BlueCargo, I map and validate incoming invoices, audit charges against customer contracts, dispute billing discrepancies, and ensure proper invoice resolution to protect clients from overbilling. Previously at ITG Transportation Services, I handled Track and Trace responsibilities—keeping information up to date, supporting load board priorities, validating container pickup bookings, and coordinating to resolve booking and equipment availability issues. Earlier, as a Customer Service Assistant at ULTRACEM SAS, I supported order management, claims handling, invoicing, and delivery incident resolution while scheduling and updating information via ERP/CRM.
Experience
Work history, roles, and key accomplishments
Invoice Audit & Dispute
BlueCargo
Oct 2025 - Present (8 months)
Audited and validated incoming invoices for billing accuracy and contract compliance, identifying and disputing detention, demurrage, per diem, and accessorial discrepancies. Partnered with internal teams and external parties to resolve billing issues and protect clients from overbilling.
Shipment Tracking Specialist
ITG Transportation Services, Inc.
Jul 2021 - Sep 2025 (4 years 2 months)
Maintained and improved shipment tracking data by updating internal systems using SSL-provided information and validating container pickup bookings. Coordinated with internal and external teams to resolve booking, critical-date, and equipment availability issues to keep operations running smoothly.
Customer Service Assistant
ULTRACEM SAS
Aug 2015 - Jul 2021 (5 years 11 months)
Provided customer support for order management, claims handling, and invoicing in the construction materials industry. Scheduled orders, updated ERP/CRM records, coordinated delivery incident resolution, and supported claims follow-up reporting.
Education
Degrees, certifications, and relevant coursework
Universidad del Norte
International Business Professional, International Business
2007 - 2013
Grade: 4.3
Activities and societies:
Studied International Business at Universidad del Norte
Availability
Location
Authorized to work in
Job categories
Skills
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