Mario Vargas Guevara
Summary
Managed Services Engineer with hands-on experience at Zuora, supporting enterprise clients in billing automation, subscription lifecycle management, and REST API integrations. Proficient in Zuora Billing, Workflows, Data Query, Liquid, and Postman. Strong background in technical support, automation logic, and incident resolution in SaaS environments. Passionate about process improvement, efficiency, and customer satisfaction.
Overview
14
14
years of professional experience
Work History
Managed Services Engineer
Zuora, Inc.
03.2023 - Current
- Provide advanced technical support to enterprise customers using Zuora Billing and Workflow automation.
- Troubleshoot incidents and performance issues related to billing, payments, subscriptions, and API integrations.
- Build and maintain Workflows using Liquid scripting and SQL/PLSQL.
- Collaborate with internal teams and clients to meet SLA commitments and improve service delivery.
- Maintain technical documentation and runbooks for API configurations and automation processes.
Accounts Payable Team Leader
Thermo Fisher
01.2022 - Current
- Monitor GRNI Accounts and AP Trade for more than 24 sites.
- Support the AP GBS Director in providing MBR information to share with stakeholders.
- Support new business opportunities and divestitures.
- Create Career Path for Direct Reports.
- Provide support to Direct Reports with escalations from Stakeholders or vendors.
- Create position requisitions for open positions in the team.
- Lead interviews for open positions.
- Implement process improvement initiatives.
- Research best practices in the accounts payable area.
- Resolve escalated issues between the third-party provider and Business Units.
- Drive various strategic initiatives to completion.
- Support various ERP Upgrades across business units.
- Analyze and support monthly metrics and quarterly reports out to Business Units.
- By utilizing KNIME, I automated the accruals process for five separate divisions, resulting in a significant time reduction from 27 hours down to just 12 hours.
- Stabilized and reduced the backlog for GRNI Account using Pareto.
- Provided accurate and timely monthly metrics to our Business Units.
- Effectively drove KPIs for GRNI Accounts.
- Provided support to all analysts on their training and knowledge of Accounts Payable.
Vendor Investigation and Transaction Accuracy Specialist
Amazon
01.2019 - 01.2022
- Lead investigations, deep dives, and special projects in a timely manner while communicating recommendations and findings to management and other stakeholders.
- Communicate with stakeholders and process owners to define action items for root cause identification.
- Follow-up with Stakeholders on action items to ensure they are fulfilled.
- Write a monthly report to leadership with top findings that includes a summary of each case, including root cause and action items.
- Interview candidates for different available positions for the team.
- Lead New Hire Orientation for the team.
- Created a Root Cause Analysis (RCA) process from scratch, setting up goals and steps to find root causes, while meeting expected goals.
- Managed to find the root cause of a vendor duplicating invoices and implemented actions for a 74% reduction in DPMO, representing a monetary reduction from $31.5MM (2020) to $4.4MM at the end of 2021.
- Completed more than 17 different RCA cases in one year with an action plan set for stakeholders for resolution.
- Interviewed more than 44 candidates in two years, helping to hire more than 10 different peers for the team.
Accounts Payable Team Coordinator
Getinge Group
01.2018 - 01.2019
- Monitor Service Level Agreements with third-party providers.
- Support the AP Associate Director in providing services between the Business Units and the third-party provider.
- Support new business opportunities and divestitures.
- Implement process improvement initiatives.
- Research best practices in the accounts payable area.
- Resolve escalated issues between the third-party provider and Business Units.
- Drive various strategic initiatives to completion.
- Support various ERP Upgrades across business units.
- Analyze and support monthly metrics and quarterly reports out to Business Units.
- Stabilized and reduced the backlog of both Canada and United States Business Units in one month.
- Provided accurate and timely monthly metrics to our Business Units.
- Effectively drove KPIs for Employee Expenses and different Business Units.
- Provided support to all analysts on their training and knowledge of Accounts Payable.
Senior Account Payable Analyst
Getinge Group
01.2017 - 01.2018
- Assist with month-end close: journal entries, reporting, PO spend analysis, and reconciliations.
- Perform various audits to determine that internal controls meet compliance and corporate policy.
- Support stakeholders by providing various reports for budgeting purposes.
- Assist in making recommendations to management regarding process improvements.
- Monitor overall invoice activity; analyze exceptions; resolve and investigate invoice exceptions.
- Approve and review vendor adds/changes. Advanced problem and process resolution.
- Led the remote migration of all Accounts Payable processes for one of the Business Units.
- Led the remote migration of all Vendor Master Data processes for one of the Business Units.
Account Payable Analyst
Getinge Group
01.2016 - 01.2017
- Responsible for the management of related financial processes, such as: the implementation and management of accounting records for invoices and credit notes, compensation, management of vendor master data, indicating urgent cash payments.
- Care for providers upon request and payment balances antiquity.
- Active participation in the development of improvement plans for financial processes and systems.
- Migration and process mapping of Accounts Payable for USA.
- Migration and process mapping of Accounts Payable for Canada.
- Stabilization of both migrated companies.
- Owner of the Accounts Payable Process for the Company in Canada.
Accounts Payable Analyst
Griffith Laboratories
01.2015 - 01.2016
- Care for providers upon request and payment balances antiquity.
- Monitor and coordinate supplier payments, to respect the negotiated payment terms, according to company guidelines.
- Projected weekly amount available for payments.
- Responsible for the management of related financial processes, such as: the implementation and management of accounting records for invoices and credit notes, compensation, management of vendor master data, indicating urgent cash payments.
- Decrease in overdue balances exceeding 30 days.
- Increased customer satisfaction.
Accounts Payable Analyst
Kimberly Clark
01.2013 - 01.2015
- Monitor and coordinate supplier payments, to respect the agreed payment terms, according to company guidelines.
- Responsible for managing related financial areas, such as the following processes: the implementation and management of accounting records for invoices and credit notes, Petty Cash, compensation, assistant supplier management, corporate registration card, indicating urgent treasury payments, reviewing and approving expense reports, and maintaining auxiliary employees.
- Migration and process mapping of Accounts Payable.
- Participation and implementation of Kaizen projects.
- Decreased time in records using Management System tools.
- Increased customer satisfaction.
Master Data
Kimberly Clark
01.2012 - 01.2013
- Responsible for providing service to more than 60 countries in Europe, Asia, and North America.
- Creation and maintenance of Master Data for suppliers and customers.
- Creation, extension, and review of data including provider's name, address, bank accounts, payment terms, and payment methods.
- Creation and maintenance of Master Data for materials and products.
- Assignment of the User Key role for service efficiency.
- Responsible for data migration of materials for Saudi Arabia.
- Reduction of times in processes using different Templates.
Education
Bachelor of Science - Computer Engineering
ULACIT
07.2025
Postgraduate - Finance
ULACIT
Business Administration Bachelor Degree -
Universidad Latina
Skills
- Zuora billing administration
- Zuora workflow automation
- Zuora REST API integration
- PL/SQL programming
- Data analysis with KNIME
- Java development
- SQL database management
- R programming
- Python scripting
- Microsoft Office proficiency
- SAP software expertise
- Oracle database management
- Concur expense management
- Cognos reporting and analytics
- Visio diagramming skills
- Lean management principles
- Six Sigma Yellow Belt certification
- Six Sigma Green Belt accountability
- Kaizen methodologies
- Continuous improvement strategies
<Enter your own>
- ID Number: 113310925
- ID Number: 113310925
Languages
SPANISH, Full Professional Competence
Languages
English
Full Professional
Spanish
Native/ Bilingual
Timeline
Managed Services Engineer
Zuora, Inc.
03.2023 - Current
Accounts Payable Team Leader
Thermo Fisher
01.2022 - Current
Vendor Investigation and Transaction Accuracy Specialist
Amazon
01.2019 - 01.2022
Accounts Payable Team Coordinator
Getinge Group
01.2018 - 01.2019
Senior Account Payable Analyst
Getinge Group
01.2017 - 01.2018
Account Payable Analyst
Getinge Group
01.2016 - 01.2017
Accounts Payable Analyst
Griffith Laboratories
01.2015 - 01.2016
Accounts Payable Analyst
Kimberly Clark
01.2013 - 01.2015
Master Data
Kimberly Clark
01.2012 - 01.2013
Bachelor of Science - Computer Engineering
ULACIT
Postgraduate - Finance
ULACIT
Business Administration Bachelor Degree -
Universidad Latina
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