OST Executive and Leadership Team

June, 2026

Leadership Overview

OST has 10 executives leading key functions including strategy, finance, technology, and operations.

Driven by technical expertise and strategic advisory, OST empowers organizations to navigate complex challenges and achieve long-term objectives through tailored technology solutions and consulting services.

Leadership Roles at OST

  • Chief Executive Officer - Marcus Collier
  • Manager, Commercial & Chief Executive Officer - Jose S.
  • Chief Executive Officer & Editor & Chief - Michael Naumenko
  • Chief Executive Officer & Founder - Mete Çetiner
  • Founder & Chief Executive Officer - Olaf Stuehr
  • Chief Financial Officer - James Bottorff
  • Principal & Amp. Chief Financial Officer - Anil Chaudhry
  • Chief Technology Officer - Ivan Marakov
  • Deputy Associate Chief Information Officer - Yolanda Montoya
  • Drh - Zoundi Raphael
  • Marcus Collier - Chief Executive Officer

    Marcus Collier, the Chief Executive Officer at OST, directs the overarching strategy and operational execution for the company's comprehensive technology solutions and consulting services. Collier's leadership guides OST's engagement across multiple sectors, including management consulting, information technology, research, and infrastructure development. This executive ensures the firm's practice remains grounded in technical expertise while delivering strategic advisory capabilities to clients. The Chief Executive Officer oversees the integration of systems, data management, and organizational transformation initiatives, aligning solutions with specific client operational requirements and long-term objectives. Marcus Collier's focus is on fostering a client-centric approach, moving beyond standardized templates to deeply understand each client's unique context. The Chief Executive Officer's role involves navigating complex regulatory environments and delivering solutions within demanding operational constraints, reinforcing OST's credibility across sectors requiring high accountability and precision. Collier drives the company's commitment to innovation and client success.

    Jose S. - Manager, Commercial & Chief Executive Officer

    Jose S., the Manager, Commercial & Chief Executive Officer at OST, manages commercial operations and provides executive leadership for specific business units. This dual role involves driving revenue growth and ensuring the strategic alignment of commercial activities with OST's broader technology solutions and consulting services. The Manager, Commercial & Chief Executive Officer oversees client relationships within the commercial sector, focusing on delivering value through technical expertise and strategic advisory. Jose S. ensures that OST's service portfolio effectively addresses enterprise needs, from initial strategy and planning through implementation and optimization. The executive's responsibilities include identifying market opportunities and developing strategies to expand OST's presence in key commercial segments. Jose S. champions the company's commitment to understanding client contexts deeply, ensuring solutions are tailored to specific operational requirements and long-term objectives. This leadership role is critical for maintaining OST's reputation for delivering sophisticated technical initiatives.

    Michael Naumenko - Chief Executive Officer & Editor & Chief

    Michael Naumenko, the Chief Executive Officer & Editor & Chief at OST, leads the company's strategic direction and editorial oversight. This unique position combines executive leadership for technology solutions and consulting services with responsibility for content strategy and publication. Naumenko's role ensures that OST's technical expertise and strategic advisory capabilities are effectively communicated to clients and the broader market. The Chief Executive Officer & Editor & Chief oversees the development and dissemination of insights related to management consulting, information technology, research, and infrastructure development. Michael Naumenko's focus is on aligning OST's service portfolio with market needs, from strategy and planning through implementation and optimization. This executive drives the company's commitment to deep client context understanding, ensuring tailored solutions that meet specific operational requirements and long-term objectives. Michael Naumenko's leadership ensures OST's credibility across sectors demanding high accountability and precision.

    Mete Çetiner - Chief Executive Officer & Founder

    Mete Çetiner, the Chief Executive Officer & Founder at OST, established and now directs the company's vision and strategic growth. As Founder, Çetiner provides foundational leadership for OST's comprehensive technology solutions and consulting services across multiple sectors. The Chief Executive Officer & Founder oversees the firm's core practice, which blends technical expertise with strategic advisory capabilities to address complex client challenges. Mete Çetiner's leadership ensures that OST's service portfolio spans the full spectrum of enterprise needs, from initial strategy and planning through implementation and ongoing optimization. This executive champions the company's commitment to understanding client contexts deeply, rather than applying standardized templates, ensuring solutions align with specific operational requirements and long-term objectives. Mete Çetiner's role is pivotal in maintaining OST's reputation for managing sophisticated technical initiatives and delivering results within demanding operational constraints.

    Olaf Stuehr - Founder & Chief Executive Officer

    Olaf Stuehr, the Founder & Chief Executive Officer at OST, provides foundational leadership and strategic direction for the company's technology solutions and consulting services. As Founder, Stuehr established OST's core principles, emphasizing technical expertise combined with strategic advisory capabilities. The Founder & Chief Executive Officer oversees the firm's operations across sectors including management consulting, information technology, research, and infrastructure development. Olaf Stuehr ensures the service portfolio addresses the full spectrum of enterprise needs, from strategy and planning through implementation and optimization. This executive drives the company's commitment to deep client context understanding, tailoring solutions to specific operational requirements and long-term objectives rather than relying on standardized templates. Olaf Stuehr's leadership is instrumental in maintaining OST's credibility with government agencies, private enterprises, and research institutions seeking partners for sophisticated technical initiatives.

    James Bottorff - Chief Financial Officer

    James Bottorff, the Chief Financial Officer at OST, directs the company's financial strategy and fiscal operations, ensuring robust financial health across its technology solutions and consulting services. Bottorff's oversight extends to managing budgets, financial planning, and resource allocation to support OST's growth and operational objectives. The Chief Financial Officer plays a critical role in evaluating investment opportunities and managing financial risks associated with complex technical initiatives. James Bottorff ensures that financial reporting and compliance standards are met, particularly for clients in government agencies and private enterprises operating within demanding regulatory environments. This executive's expertise in financial management supports the company's ability to deliver tailored solutions that align with specific operational requirements and long-term objectives. James Bottorff's leadership ensures financial stability and supports the strategic advisory capabilities that define OST's market position.
    James Bottorff

    Anil Chaudhry - Principal & Amp. Chief Financial Officer

    Anil Chaudhry, the Principal & Amp. Chief Financial Officer at OST, provides dual leadership in strategic advisory and financial management for the company's technology solutions and consulting services. As Principal, Chaudhry contributes to high-level strategic decision-making and client engagement, leveraging deep industry knowledge. The Amp. Chief Financial Officer oversees the financial health of the organization, managing fiscal operations, budgeting, and financial planning to support OST's diverse service portfolio. Anil Chaudhry ensures that financial strategies align with the company's commitment to technical expertise and client-centric solutions. This executive's role is vital in navigating the financial complexities of serving government agencies, private enterprises, and research institutions. Anil Chaudhry's leadership ensures that OST can deliver sophisticated technical initiatives while maintaining rigorous financial accountability and driving long-term operational objectives.

    Ivan Marakov - Chief Technology Officer

    Ivan Marakov, the Chief Technology Officer at OST, leads the company's technological vision and innovation strategy, guiding the development and implementation of advanced technology solutions. Marakov oversees the technical architecture and infrastructure supporting OST's consulting services across various sectors. The Chief Technology Officer ensures that OST remains at the forefront of information technology, systems integration, and data management. Ivan Marakov's responsibilities include evaluating emerging technologies and driving their adoption to enhance client outcomes and operational efficiency. This executive works closely with leadership to align technological capabilities with client needs, ensuring solutions are tailored to specific operational requirements and long-term objectives. Ivan Marakov's expertise is crucial for navigating complex technical challenges and maintaining OST's reputation for delivering sophisticated, high-accountability initiatives. The Chief Technology Officer drives the technical excellence underpinning OST's service portfolio.

    Yolanda Montoya - Deputy Associate Chief Information Officer

    Yolanda Montoya, the Deputy Associate Chief Information Officer at OST, supports the strategic direction and operational management of the company's information technology infrastructure and services. Montoya's role focuses on enhancing IT systems to support OST's comprehensive technology solutions and consulting services across multiple sectors. The Deputy Associate Chief Information Officer collaborates with leadership to ensure IT operations align with client needs and regulatory requirements, particularly for government agencies and private enterprises. Yolanda Montoya contributes to the implementation of robust data management and systems integration strategies, ensuring seamless delivery of services. This executive plays a key part in optimizing IT resources to support OST's mission of addressing complex operational and technological challenges. Yolanda Montoya's efforts reinforce the company's commitment to providing tailored solutions that meet specific operational requirements and long-term objectives.

    Zoundi Raphael - Drh

    Zoundi Raphael, the Drh at OST, leads the human resources function, focusing on talent acquisition, development, and organizational culture to support the company's technology solutions and consulting services. Raphael's responsibilities include shaping HR strategies that align with OST's commitment to technical expertise and client-centric advisory. The Drh oversees employee relations, performance management, and the implementation of HR policies designed to foster a high-performing workforce. Zoundi Raphael ensures that OST attracts and retains top talent capable of addressing complex operational and technological challenges across diverse sectors. This executive plays a crucial role in building a team that can deliver tailored solutions, aligning with specific client operational requirements and long-term objectives. Zoundi Raphael's leadership in human capital management is fundamental to OST's ability to execute sophisticated technical initiatives and maintain its reputation for accountability and precision.

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    Frequently Asked Questions Regarding OST Top Executives and Leadership Team

    Who leads OST?
    OST is led by Marcus Collier (Chief Executive Officer), along with executives such as Jose S. (Manager, Commercial & Chief Executive Officer) and Michael Naumenko (Chief Executive Officer & Editor & Chief).
    Who is part of OST’s executive team?
    The executive team of OST includes leaders such as Marcus Collier (Chief Executive Officer), Jose S. (Manager, Commercial & Chief Executive Officer), Michael Naumenko (Chief Executive Officer & Editor & Chief) and other senior executives.
    How many executives does OST have?
    OST has 10 executives leading key business areas.
    What roles are included in OST’s leadership team?
    The leadership team of OST includes roles such as Chief Executive Officer, Manager, Commercial & Chief Executive Officer, Chief Executive Officer & Editor & Chief, Chief Executive Officer & Founder, Founder & Chief Executive Officer.