Summary
Overview
Work History
Education
Skills
Timeline
Generic

Robin Ornelas

Odessa

Summary

Results-driven operations and financial professional with extensive experience supporting oilfield service and supply companies in fast-paced environments. Skilled in financial analysis, accounts receivable/payable, payroll, procurement, dispatch coordination, inventory management, and operational reporting. Proven ability to manage multiple responsibilities across accounting, operations, HR, and logistics. Strong background in customer relations, vendor management, asset tracking, and cross-department coordination with a focus on operational efficiency, accuracy, and organizational growth.

Overview

8
8
years of professional experience

Work History

Office Manager

Lexson Services, LLC
Odessa
07.2025 - 05.2026

Key Responsibilities & Achievements

  • Managed daily office operations for two sister companies in the oilfield service and oilfield supply industries.
  • Oversaw full-cycle Accounts Receivable and Accounts Payable processes for both companies.
  • Created, processed, and submitted customer invoices while ensuring timely billing and accurate documentation.
  • Managed collections efforts by sending weekly customer statements, following up on past due invoices, and maintaining customer account communication.
  • Prepared and submitted weekly Accounts Receivable summary reports to the CFO and CEO, providing detailed updates on cash flow and past due account status.
  • Generated and maintained invoice status reports to track pending invoices and coordinate with operations teams to ensure timely customer billing.
  • Processed purchase orders and entered vendor invoices for payment processing.
  • Reviewed open purchase order reports to ensure procurement items were received, processed, and closed out accurately within the system.
  • Maintained daily activity and asset tracking reports for rental equipment and repair status, including both in-house and third-party repairs.
  • Reviewed field service tickets for accuracy, corrected discrepancies, and adjusted employee bonus calculations when necessary.
  • Monitored employee work hours by pay period and provided daily labor hour reports to executive leadership to assist with work distribution and scheduling efficiency.
  • Tracked labor hours by customer account for quarterly safety reporting and compliance submissions.
  • Prepared and distributed daily field profit analysis reports including revenue tracking, month-to-date pacing, cash flow forecasting, job profitability analysis, fuel usage, miscellaneous expenses, and prorated fixed costs.
  • Assisted with month-end closing procedures and financial reconciliation processes.
  • Generated monthly commission reports for sales personnel.
  • Managed customer and vendor account setup and maintenance.
  • Reviewed, processed, and submitted payroll for employees each pay period.
  • Handled all HR-related onboarding and offboarding processes, including employee documentation and personnel record management.

Financial Analyst

AMD/PONY Services
Midland, TX
06.2018 - 02.2025
  • Managed the billing process by collecting, reviewing, and analyzing field reports and service tickets to ensure accurate customer invoicing.
  • Coordinated invoice distribution directly to customers and field supervisors for approval signatures while tracking timely returns and processing status.
  • Submitted approved invoices through customer-preferred billing platforms and methods while monitoring payment timelines and cash flow expectations.
  • Provided the CFO with regular updates regarding outstanding receivables, projected cash flow, and expected customer payments.
  • Proactively communicated with customers regarding past due balances and invoice discrepancies to support collections efforts and improve cash flow management.
  • Issued purchase orders to procurement teams after validating pricing accuracy and obtaining proper internal approvals.
  • Assisted Accounts Payable operations by reviewing and verifying incoming vendor invoices for accuracy and compliance.
  • Reviewed and finalized well files to ensure all supporting operational and financial documentation was complete and properly organized.
  • Collaborated with the sales team to prepare customer bids, projected job cost estimates, and profitability analysis reports for COO approval.
  • Compiled final post-job profit analysis reports evaluating actual margin performance and operational profitability for inclusion in well files.
  • Developed and maintained a live labor analysis reporting system accessible through Microsoft Teams, allowing management to monitor real-time field and shop labor performance.
  • Reviewed employee hours and per diem submissions each pay period to verify accuracy, legitimacy, and policy compliance.
  • Conducted monthly revenue forecasting and distributed daily reports comparing forecasted versus actual top-line revenue performance.
  • Maintained the company asset ledger ensuring proper tracking, additions, disposals, and record accuracy of company assets.
  • Managed and monitored a valve reliability tracking system measuring valve production performance and failure trends.
  • Oversaw quarterly parts room inventory counts and assisted with inventory reconciliation processes.
  • Performed internal audits for procurement and dispatch departments to verify adherence to company procedures and operational controls.
  • Provided direct operational and financial support to the CFO and collaborated with the company CPA to address accounting and reporting inquiries.
  • Remained actively involved in operational support functions while primarily focusing on financial analysis and reporting responsibilities.
  • Managed the billing process by collecting, reviewing, and analyzing field reports and service tickets to ensure accurate customer invoicing.
  • Coordinated invoice distribution directly to customers and field supervisors for approval signatures while tracking timely returns and processing status.
  • Submitted approved invoices through customer-preferred billing platforms and methods while monitoring payment timelines and cash flow expectations.
  • Provided the CFO with regular updates regarding outstanding receivables, projected cash flow, and expected customer payments.
  • Proactively communicated with customers regarding past due balances and invoice discrepancies to support collections efforts and improve cash flow management.
  • Issued purchase orders to procurement teams after validating pricing accuracy and obtaining proper internal approvals.
  • Assisted Accounts Payable operations by reviewing and verifying incoming vendor invoices for accuracy and compliance.
  • Reviewed and finalized well files to ensure all supporting operational and financial documentation was complete and properly organized.
  • Collaborated with the sales team to prepare customer bids, projected job cost estimates, and profitability analysis reports for COO approval.
  • Compiled final post-job profit analysis reports evaluating actual margin performance and operational profitability for inclusion in well files.
  • Developed and maintained a live labor analysis reporting system accessible through Microsoft Teams, allowing management to monitor real-time field and shop labor performance.
  • Reviewed employee hours and per diem submissions each pay period to verify accuracy, legitimacy, and policy compliance.
  • Conducted monthly revenue forecasting and distributed daily reports comparing forecasted versus actual top-line revenue performance.
  • Maintained the company asset ledger ensuring proper tracking, additions, disposals, and record accuracy of company assets.
  • Managed and monitored a valve reliability tracking system measuring valve production performance and failure trends.
  • Oversaw quarterly parts room inventory counts and assisted with inventory reconciliation processes.
  • Performed internal audits for procurement and dispatch departments to verify adherence to company procedures and operational controls.
  • Provided direct operational and financial support to the CFO and collaborated with the company CPA to address accounting and reporting inquiries.
  • Remained actively involved in operational support functions while primarily focusing on financial analysis and reporting responsibilities.
  • Managed the billing process by collecting, reviewing, and analyzing field reports and service tickets to ensure accurate customer invoicing.
  • Coordinated invoice distribution directly to customers and field supervisors for approval signatures while tracking timely returns and processing status.
  • Submitted approved invoices through customer-preferred billing platforms and methods while monitoring payment timelines and cash flow expectations.
  • Provided the CFO with regular updates regarding outstanding receivables, projected cash flow, and expected customer payments.
  • Proactively communicated with customers regarding past due balances and invoice discrepancies to support collections efforts and improve cash flow management.
  • Issued purchase orders to procurement teams after validating pricing accuracy and obtaining proper internal approvals.
  • Assisted Accounts Payable operations by reviewing and verifying incoming vendor invoices for accuracy and compliance.
  • Reviewed and finalized well files to ensure all supporting operational and financial documentation was complete and properly organized.
  • Collaborated with the sales team to prepare customer bids, projected job cost estimates, and profitability analysis reports for COO approval.
  • Compiled final post-job profit analysis reports evaluating actual margin performance and operational profitability for inclusion in well files.
  • Developed and maintained a live labor analysis reporting system accessible through Microsoft Teams, allowing management to monitor real-time field and shop labor performance.
  • Reviewed employee hours and per diem submissions each pay period to verify accuracy, legitimacy, and policy compliance.
  • Conducted monthly revenue forecasting and distributed daily reports comparing forecasted versus actual top-line revenue performance.
  • Maintained the company asset ledger ensuring proper tracking, additions, disposals, and record accuracy of company assets.
  • Managed and monitored a valve reliability tracking system measuring valve production performance and failure trends.
  • Oversaw quarterly parts room inventory counts and assisted with inventory reconciliation processes.
  • Performed internal audits for procurement and dispatch departments to verify adherence to company procedures and operational controls.
  • Provided direct operational and financial support to the CFO and collaborated with the company CPA to address accounting and reporting inquiries.
  • Remained actively involved in operational support functions while primarily focusing on financial analysis and reporting responsibilities.
  • Managed the billing process by collecting, reviewing, and analyzing field reports and service tickets to ensure accurate customer invoicing.
  • Coordinated invoice distribution directly to customers and field supervisors for approval signatures while tracking timely returns and processing status.
  • Submitted approved invoices through customer-preferred billing platforms and methods while monitoring payment timelines and cash flow expectations.
  • Provided the CFO with regular updates regarding outstanding receivables, projected cash flow, and expected customer payments.
  • Proactively communicated with customers regarding past due balances and invoice discrepancies to support collections efforts and improve cash flow management.
  • Issued purchase orders to procurement teams after validating pricing accuracy and obtaining proper internal approvals.
  • Assisted Accounts Payable operations by reviewing and verifying incoming vendor invoices for accuracy and compliance.
  • Reviewed and finalized well files to ensure all supporting operational and financial documentation was complete and properly organized.
  • Collaborated with the sales team to prepare customer bids, projected job cost estimates, and profitability analysis reports for COO approval.
  • Compiled final post-job profit analysis reports evaluating actual margin performance and operational profitability for inclusion in well files.
  • Developed and maintained a live labor analysis reporting system accessible through Microsoft Teams, allowing management to monitor real-time field and shop labor performance.
  • Reviewed employee hours and per diem submissions each pay period to verify accuracy, legitimacy, and policy compliance.
  • Conducted monthly revenue forecasting and distributed daily reports comparing forecasted versus actual top-line revenue performance.
  • Maintained the company asset ledger ensuring proper tracking, additions, disposals, and record accuracy of company assets.
  • Managed and monitored a valve reliability tracking system measuring valve production performance and failure trends.
  • Oversaw quarterly parts room inventory counts and assisted with inventory reconciliation processes.
  • Performed internal audits for procurement and dispatch departments to verify adherence to company procedures and operational controls.
  • Provided direct operational and financial support to the CFO and collaborated with the company CPA to address accounting and reporting inquiries.
  • Remained actively involved in operational support functions while primarily focusing on financial analysis and reporting responsibilities.

Dispatch Coordinator

AMD Energy Services, LLC
Midland, TX
02.2018 - 06.2018
  • Managed communication between customers and field supervisors to coordinate, schedule, and plan upcoming jobs and service operations.
  • Created and issued dispatch tickets detailing required equipment, personnel assignments, and scheduled execution dates.
  • Coordinated with shop personnel to ensure equipment was properly prepared, inspected, and ready for field deployment.
  • Inspected outgoing equipment for accuracy and documented all assigned assets for each job.
  • Coordinated trucking logistics and field service personnel scheduling to support efficient job execution.
  • Distributed detailed dispatch emails prior to each job to ensure all personnel and departments were informed of schedules, equipment requirements, and operational details.
  • Prepared and distributed daily activity reports tracking the real-time location and status of equipment and personnel.
  • Managed subrental equipment tracking and coordinated timely returns to vendors and suppliers.
  • Verified equipment and inventory using asset tracking numbers to maintain accurate operational records.
  • Created repair routers and coordinated repair documentation for damaged or returned equipment.
  • Initiated and maintained well file documentation including dispatch tickets, test charts, bills of lading, field tickets, repair logs, and supporting operational paperwork.
  • Assisted operations management with maintaining organized and accurate job documentation to support billing, compliance, and operational efficiency.

Procurement

AMD Energy Services, LLC
Midland, TX
12.2017 - 02.2018
  • Sourced materials, equipment, and services from multiple vendors while ensuring cost-effective purchasing solutions and maintaining high quality standards.
  • Managed inventory operations through QuickBooks, including receiving, tracking, and organizing inventory items efficiently.
  • Coordinated distribution of materials and equipment to shop personnel and field locations to support ongoing operations and job schedules.
  • Maintained an organized parts room and monitored inventory levels to ensure operational readiness and minimize shortages.
  • Oversaw asset management processes including issuing, tracking, and decommissioning equipment within the company asset ledger.
  • Managed repair routers and documented damages to hard goods and equipment for operational reporting and tracking purposes.
  • Maintained accurate documentation and filed procurement and repair-related records within corresponding well files.
  • Assisted field operations by delivering parts and materials directly to job locations when necessary to avoid operational delays.
  • Supported efficient procurement processes by maintaining vendor relationships and monitoring purchasing timelines.

Education

No Degree -

UTPB
Odessa, TX

Skills

  • Accounts Receivable (AR)
  • Accounts Payable (AP)
  • Revenue Forecasting
  • Cash Flow Management
  • Payroll Processing
  • Financial Reporting
  • Inventory Management
  • Asset Management
  • Dispatch Coordination
  • HR Administration
  • Vendor Relations
  • Well File Documentation
  • Equipment Tracking
  • Microsoft Excel
  • Microsoft Teams
  • QuickBooks
  • Multi-Company Management
  • Time Management
  • Problem Solving
  • Multi-Tasking
  • Team Coordination
  • Organizational Skills

Timeline

Office Manager

Lexson Services, LLC
07.2025 - 05.2026

Financial Analyst

AMD/PONY Services
06.2018 - 02.2025

Dispatch Coordinator

AMD Energy Services, LLC
02.2018 - 06.2018

Procurement

AMD Energy Services, LLC
12.2017 - 02.2018

No Degree -

UTPB