Open to opportunities

Sebastián Pinilla

@sebastinpinilla

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Manager specializing in accounts payable, marketplace operations, and customer support.

Colombia

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What I'm looking for

I’m looking for a role where I can lead accounts payable/billing operations, strengthen accuracy through process improvements, and collaborate cross-functionally—using my customer support and e-commerce background to improve service and financial outcomes.

I’m a multilingual, results-driven professional with 8+ years across e-commerce, customer support, and financial operations. I combine hands-on billing/accounting execution with a service-first mindset to keep processes accurate, fast, and customer-friendly.

As an Accounts Payables Manager, I manage the full accounts payable cycle in QuickBooks—processing 300+ vendor bills weekly and issuing 50–70 client invoices daily. I reconcile accounts, manage aging and collections via email and phone, and support month-end closing while ensuring compliance with company policies and GAAP.

I also lead by improving how work gets done: I implement process improvements to reduce manual errors, monitor performance through weekly reporting, and train junior finance team members to strengthen onboarding and consistency across accounting processes.

Before finance leadership, I built and scaled an e-commerce business as Founder & E-commerce Manager, managing marketplaces (Amazon, MercadoLibre, eBay, Etsy) and running ad campaigns, logistics, and AI-enhanced content. Earlier roles strengthened my bilingual support capability as a Concierge Specialist and Customer Support Representative, including travel bookings with Amadeus and Sabre.

Experience

Work history, roles, and key accomplishments

Current

Accounts Payables Manager

Current

Horizon Legal Solutions

Oct 2023 - Present (2 years 8 months)

Managed the full accounts payable cycle, processing 300+ vendor bills weekly in QuickBooks and issuing 50–70 client invoices per day. Reconciled payments, monitored aging reports, executed collections calls/emails, and implemented process improvements while ensuring GAAP compliance.

Accounts Payable Quickbooks Invoice Processing Bank Reconciliation Collections GAAP Compliance Excel reporting

Concierge Specialist Agent

IATA iShare Service Center SAS

Aug 2022 - Apr 2025 (2 years 8 months)

Provided bilingual customer support via chat, email, and calls, booking flights, hotels, and rentals using Amadeus and Sabre. Managed loyalty programs, resolved complex inquiries, and handled escalations from partner banks to ensure client satisfaction.

Bilingual Customer Support Amadeus Sabre Travel Booking Loyalty Program Management Escalation Handling Customer Satisfaction Phone Support Email Support

Founder & E-commerce Manager

Importaciones ST

Jan 2016 - Jan 2023 (7 years)

Built and scaled a multi-channel e-commerce business across Amazon, MercadoLibre, and Instagram, managing logistics, inventory, and AI-enhanced content. Improved customer retention through top-tier service and rapid issue resolution, and increased profitability via market analysis and supplier negotiations.

Multi Channel E Commerce Amazon Marketplace Mercado Libre Inventory Management Logistics Coordination Facebook Ads AI Content Creation Customer Retention Market Analysis

Bilingual Customer Support Representative

Teleperformance

Aug 2015 - Mar 2016 (7 months)

Resolved high-risk cases and technical issues across the Americas region and supported new agents as a floor assistant. Delivered high customer satisfaction through problem-solving, empathy, and escalation handling.

Customer Support Technical Troubleshooting High Risk Case Resolution Escalation Handling Floor Support Bilingual Communication Customer Satisfaction Excel

Customer Service Representative

Convergys

Jun 2012 - Dec 2012 (6 months)

Provided technical and billing support to U.S.-based customers, ensuring accurate issue resolution. Developed skills in Lean project management and applied Excel for business support.

Customer Service Technical Support Billing Support Customer Support Excel Problem Solving