Sofia Hiller
Houston,TX
Summary
QHSE Specialist and Mechanical Engineer with 15+ years of experience driving regulatory compliance, safety performance, and continuous improvement across oil & gas and manufacturing environments. Specialized in Integrated Management Systems (ISO 9001, 14001, 45001, API Q1), with a proven track record of achieving 100% compliance, reducing incidents by 30%, and leading successful certification or recertification processes. Known for translating complex QHSE requirements into practical, high-impact solutions that improve operations, strengthen safety culture, and support business objectives. Recognized for high performance, leadership, and the ability to deliver results in fast-paced and highly regulated environments.
Overview
19
19
years of professional experience
1
1
Certification
Work History
QHSE Specialist
Gilmore
02.2026 - Current
- Key Responsibilities
- Lead and improve IMS aligned with ISO 9001, 14001, 45001, and API Q1 standards
- Analyze QHSE data to spot trends and drive corrective actions
- Manage NCRs, corrective actions, and safety observations, enhancing tracking and resolution
- Collaborate across functions with operations and suppliers to ensure compliance and quality
- Led the Safety Committee, enhancing participation and initiative execution
- Develop and maintain QHSE procedures, documentation, and work instructions
- Support audits, ensuring compliance with regulations and standards
- Key Achievements
- Promoted to QHSE Specialist for high performance
- Strengthened QHSE processes, improving compliance and audit readiness
- Improved NCR tracking, reducing issue recurrence
- Supported cross-functional resolution of quality and compliance issues
- Led safety initiatives organization-wide
- Recognized for reliability, ownership, and results in a fast-paced setting
- 2 months
QHSE Coordinator
Gilmore
Houston, TX
03.2025 - 02.2026
- Key Responsibilities
- Support QHSE systems aligned with ISO and regulatory requirements
- Manage NCRs, corrective actions, and safety observations
- Collaborate across functions to drive compliance and process improvements
- Assist with audits, reporting, and performance tracking
- Promote safety culture through training and engagement initiatives
- Key Achievements
- Rated “Exceeds Expectations” in the 2025 performance evaluation
- 2025 Gilmore DRIVE Award Winner for integrity and QHSE performance
- Achieved over 50 safety observations in 10 months, boosting workforce engagement
- Led the Safety Committee, enhancing participation and initiative execution
- Developed training and safety communication programs and materials to increase awareness
- Consistently delivered high-quality results with autonomy and reliability
- 1 year
Management System Consultant/Auditor (Independent Contractor)
Mireaux Management Solutions
Houston, TX
09.2024 - 11.2024
- Key Responsibilities
- Support ISO management system implementation projects (Quality, Environmental, and OH&S)
- Develop and revise policies, procedures, forms, and work instructions
- Conduct internal audits, gap analyses, and documentation reviews
- Support clients in achieving compliance and certification readiness
- Collaborate with stakeholders to improve document control and system structure
- 3 months
QHSE Coordinator - SASISOPA
Natgas México
Querétaro, QUE
04.2019 - 03.2024
- Key Responsibilities
- Lead ongoing IMS implementation per standards
- Ensure compliance with ASEA, environmental, safety, and operational rules
- Manage regulations and reporting for multiple facilities
- Conduct risk analysis and support emergency planning
- Drive process improvements through performance metrics
- Key Achievements
- Achieved 100% regulatory compliance, avoiding fines
- Managed 35+ IMS authorizations in Mexico
- Increased IMS performance by 80% with plans and training
- Reduced incidents by 30% while training staff
- Led ISO 9001:2015 certification, completed in 2024
- Met all deadlines accurately
- 5 years
Assistant Director of Purchasing
Drebbel de México
Ciudad del Carmen, Campeche
04.2018 - 03.2019
- Key Responsibilities
- Manage relationships with national and international suppliers
- Negotiate pricing, lead times, and commercial terms
- Oversee purchasing operations, including materials, services, and equipment
- Support resource planning and cost control initiatives
- Key Achievements
- Reduced supplier lead times by 15%, improving operational efficiency
- Achieved 5% average annual cost savings through strategic negotiations
- Improved purchasing processes by implementing internal and supplier audit practices
- Strengthened supplier performance and compliance through structured evaluation and follow-up
- 1 year
Purchasing Coordinator
ENERMAR | Marketers of Oil Products
Campeche, Mexico
11.2017 - 04.2018
- Key Responsibilities
- Manage supplier relationships and support vendor evaluation processes
- Negotiate lead times, pricing, and commercial terms
- Ensure timely delivery of materials and services aligned with purchase orders
- Track and report KPIs to support decision-making and operational performance
- Key Achievements
- Improved supplier lead times and commercial terms through negotiation and follow-up
- Achieved 100% fulfillment of purchasing requests based on project priorities
- Generated 3% average annual cost savings through procurement optimization
- Strengthened supplier performance through continuous evaluation and monitoring
- 6 months
Materials Control Specialist
Inelectra
La Urbina, Caracas
03.2017 - 09.2017
- Key Responsibilities
- Review isometric drawings and select materials in compliance with technical standards and project specifications
- Prepare Bills of Materials (BOMs), purchase requisitions, and technical bid evaluations
- Support procurement and construction teams with material requirements and project deliverables
- Coordinate with internal teams and clients to ensure alignment with project needs
- Key Achievements
- Reduced isometric verification time by 15%, improving project efficiency
- Optimized project BOMs by 30%, enhancing accuracy and material planning
- Improved coordination between engineering and procurement teams to support project execution
- 7 months
Senior Mechanical Engineer
Ministry of Hydrocarbons
Caracas
03.2007 - 09.2016
- Key Responsibilities
- Develop technical regulations and engineering standards for liquid and gaseous fuels (gasoline, diesel, LPG, CNG)
- Conduct technical evaluations of downstream projects, including service stations, storage, and distribution systems
- Perform technical reviews of equipment and suppliers, including certifications, manufacturing processes, and quality controls
- Ensure compliance with national and international standards, including testing and inspection requirements
- Support regulatory and operational decision-making through technical analysis
- Key Achievements
- Standardized 80% of service station projects by developing engineering manuals and technical guidelines
- Developed the first official technical regulation for Natural Gas Vehicle projects in Venezuela
- Evaluated and verified 70% of international equipment suppliers, ensuring compliance with high-quality standards
- Strengthened regulatory frameworks supporting safe and compliant downstream operations
- 9 years 7 months
Education
Master's degree - Integrated Management System, ISO 9001, ISO 14001, ISO 45001, SGE 21
UNIR México
02-2021
Bachelor's degree - Mechanical Engineering
Universidad Central de Venezuela
03-2007
Skills
- OSHA 30-Hour General Industry
- Quality, health, safety, and environment management systems
- Regulatory Compliance
- Internal & External Audits
- Risk Assessment & Hazard Analysis
- Incident Investigation & Root Cause Analysis
- Training Programs & Safety Culture
- Performance metrics analysis
- Documentation & Recordkeeping Systems
Accomplishments
- Achieved 100% regulatory compliance with zero fines over 5 years across multiple facilities.
- Reduced workplace incidents by 30% through proactive safety programs and risk mitigation.
- Led ISO 9001 certification, ensuring audit readiness.
- Improved IMS performance by 80% via process optimization and training all operational staff.
- Led Safety Committee, increasing employee engagement and driving safety initiatives that improved hazard awareness and strengthened safety culture
- Received 2025 Gilmore DRIVE Award for QHSE excellence.
- Promoted to QHSE Specialist for consistent high performance and leadership.
Certification
- Occupational Safety and Health: Fire and Emergency Preparedness
- ISO 9001:2015 Internal Auditor
- Occupational Safety and Health: Slips, Trips, and Falls
- SGE21 Internal Auditor
Languages
Español (Native or Bilingual)
Inglés (Professional Working)
Alemán (Elementary)
Portugués (Elementary)
Honors-Awards
High Performance Qualification, 2025 Gilmore DRIVE Award - Integrity without Compromise
Timeline
QHSE Specialist
Gilmore
02.2026 - Current
QHSE Coordinator
Gilmore
03.2025 - 02.2026
Management System Consultant/Auditor (Independent Contractor)
Mireaux Management Solutions
09.2024 - 11.2024
QHSE Coordinator - SASISOPA
Natgas México
04.2019 - 03.2024
Assistant Director of Purchasing
Drebbel de México
04.2018 - 03.2019
Purchasing Coordinator
ENERMAR | Marketers of Oil Products
11.2017 - 04.2018
Materials Control Specialist
Inelectra
03.2017 - 09.2017
Senior Mechanical Engineer
Ministry of Hydrocarbons
03.2007 - 09.2016
Bachelor's degree - Mechanical Engineering
Universidad Central de Venezuela
Master's degree - Integrated Management System, ISO 9001, ISO 14001, ISO 45001, SGE 21
UNIR México