ISTI Plant Services Executive and Leadership Team

September, 2026

Leadership Overview

ISTI Plant Services has 4 executives leading key functions including strategic oversight, information technology, and operational management.

Focused on delivering turnkey solutions for the petrochemical sector, ISTI Plant Services prioritizes safety and engineering excellence to ensure project success across complex industrial landscapes.

Leadership Roles at ISTI Plant Services

  • Chief Executive Officer, Isti & Select Engineering - Craig Wentworth
  • President - Jaime Barraza
  • President - Daniel Sigala
  • Chief Information Officer - Steven Scott
  • Craig Wentworth - Chief Executive Officer, Isti & Select Engineering

    Craig Wentworth, the Chief Executive Officer, Isti & Select Engineering at ISTI Plant Services, directs the overarching strategic vision for all turnkey industrial projects. Wentworth architects long-term growth initiatives while maintaining rigorous safety standards across the oil, natural gas, and petrochemical sectors. By aligning engineering capabilities with client requirements, the Chief Executive Officer, Isti & Select Engineering ensures that complex fabrication and assembly tasks meet strict budgetary and timeline constraints. This leadership role involves fostering deep partnerships with major industry stakeholders to expand market reach throughout North America. Craig Wentworth drives operational excellence by integrating design services with field construction support, creating a cohesive workflow that addresses unique project challenges. Through consistent focus on quality and workforce development, the Chief Executive Officer, Isti & Select Engineering secures the competitive position of the firm within the demanding energy infrastructure market.

    Jaime Barraza - President

    Jaime Barraza, the President at ISTI Plant Services, oversees the execution of large-scale field construction support and assembly operations. Barraza directs the daily activities of project managers to ensure that all petrochemical and natural gas initiatives adhere to safety protocols and quality standards. By coordinating resources across diverse job sites, the President optimizes the deployment of skilled labor to meet project deadlines. This leadership role involves managing client relationships to ensure that design and engineering services align with specific site requirements. Jaime Barraza drives efficiency by streamlining the transition from initial fabrication to final field installation. Through active oversight of operational workflows, the President maintains the reputation of the firm for delivering reliable results in challenging environments. Barraza focuses on scaling internal processes to support the expansion of service offerings across the broader energy market, ensuring consistent performance and client satisfaction.

    Daniel Sigala - President

    Daniel Sigala, the President at ISTI Plant Services, manages the strategic development of design and engineering services for the oil and gas sector. Sigala architects technical solutions that address the unique structural challenges inherent in petrochemical plant construction. By leading the engineering department, the President ensures that all fabrication designs meet rigorous industry standards and client specifications. This role involves collaborating with the executive team to identify new market opportunities and enhance the service portfolio of the company. Daniel Sigala drives innovation in assembly techniques, improving the overall speed and accuracy of project delivery. Through the management of technical talent, the President fosters a culture of excellence and precision. Sigala oversees the integration of engineering outputs with field construction requirements, ensuring that every project phase remains synchronized. By prioritizing technical integrity, the President secures the long-term success of complex industrial infrastructure projects.

    Steven Scott - Chief Information Officer

    Steven Scott, the Chief Information Officer at ISTI Plant Services, manages the digital infrastructure supporting complex engineering and construction workflows. Scott implements advanced data systems to track project progress, ensuring real-time visibility into fabrication and assembly metrics for the petrochemical industry. By modernizing internal communication platforms, the Chief Information Officer facilitates seamless collaboration between field construction teams and design engineers. This role involves securing proprietary technical data while optimizing software tools that drive operational efficiency across regional operations. Steven Scott oversees the deployment of scalable technology solutions that allow the company to adapt to the evolving demands of the energy sector. Through the strategic application of information technology, the Chief Information Officer enhances project accuracy and reporting capabilities. Scott maintains a robust digital environment that supports the commitment of the firm to delivering high-quality results within the competitive landscape of industrial services.

    Frequently Asked Questions Regarding ISTI Plant Services Top Executives and Leadership Team

    Who leads ISTI Plant Services?
    ISTI Plant Services is led by Craig Wentworth (Chief Executive Officer, Isti & Select Engineering), along with executives such as Jaime Barraza (President) and Daniel Sigala (President).
    Who is part of ISTI Plant Services’s executive team?
    The executive team of ISTI Plant Services includes leaders such as Craig Wentworth (Chief Executive Officer, Isti & Select Engineering), Jaime Barraza (President), Daniel Sigala (President) and other senior executives.
    How many executives does ISTI Plant Services have?
    ISTI Plant Services has 4 executives leading key business areas.
    What roles are included in ISTI Plant Services’s leadership team?
    The leadership team of ISTI Plant Services includes roles such as Chief Executive Officer, Isti & Select Engineering, President, President, Chief Information Officer.