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NEVER LEAD ALONE.

DO SIMPLE BETTER.
TOGETHER.

Helping AEC Leaders scale intentionally without carrying the weight of growth alone.

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Founder & Principal Advisor

Mark J. Shereen, PE/MBA

Intentional • Pragmatic • Thoughtfully Candid

Mark is the Founder and Principal Advisor at Odyssey Advisors, the consulting firm he built to help engineering, architecture, and construction leaders scale intentionally with less complexity, more agility, and greater impact. As a professional engineer and business owner, Mark brings lived experience navigating the real-world challenges of growth and transition in the AEC industry, ensuring you never have to lead alone. His intentional, pragmatic, and thoughtfully candid approach helps you Do Simple Better.

​Unique Perspectives Include:​

  • Leading and managing vision and operations in high-growth environments, driving alignment and scalable growth with a focus on reducing complexity.
  • Partnering with top leadership on strategic growth and corporate development initiatives in the engineering, architecture, construction, and real estate sectors, including buy-side, sell-side, and integration experience with $150M+ of closed transactions.
  • Working in the business as an engineering and real estate professional on $2B+ of real estate development projects, spanning commercial, industrial, and residential sectors.
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why choose us

The Odyssey Experience

Scaling an AEC firm is a heavy lift, and too often leaders end up carrying that weight alone. Surrounded by capable technical teams, they still find themselves sitting at an empty table when it comes to growth.

As a professional engineer and business owner, Mark brings lived experience navigating the real-world challenges of growth and transition in the AEC industry, ensuring you never have to lead alone by:

  • Sitting at the table with you as a trusted advisor.
  • Filling your table with peers through the AEC Leadership Exchange.
  • Equipping your people to join you at the table through our leadership development course, Earn Your Seat at the Table.


The result is sustainable growth with less complexity, more agility, and greater impact.

Reach out today to start doing simple better, together.

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testimonials

Real People.
Real Impact.

Odyssey is our trusted advisor, combining strategic thinking with a focus on action and execution. Odyssey helps us frame out our vision while connecting that big picture to our daily activities and ensuring that our goals are executed effectively, propelling us closer to our vision every day. I highly recommend working with Odyssey to make your vision a reality.
Robert J. McDermott, PE
Robert J. McDermott, PEPresident, Huitt-Zollars, Inc.
Realizing the potential from a recent corporate restructure was a top priority for me as CEO. Odyssey Advisors helped us get there by bringing the perspective and structure needed to connect our strategic plan with the day-to-day and to get the company aligned on our most important goals as one. Mark has a unique perspective of our industry, and he took the time to truly understand the specifics of our company. I highly recommend working with Odyssey to achieve the vision for your company.
Brian E. Curtin, PE
Brian E. Curtin, PEPresident and CEO, Chairman of the Board, BRPH
Mark empowered me to spend more time in the areas of my unique abilities, which best served the company and brought me the most joy and satisfaction. He connected our aggressive long-term growth goals with our shorter-term priorities by focusing the team on the planning process and eliminating any obstacles to execution. His unique expertise in strategic planning, corporate growth, and leadership collaboration was a tremendous asset to our team.
Brian P. Sullivan, PE
Brian P. Sullivan, PECEO, Sullivan Engineering, LLC
Odyssey Advisors helped take our strategic planning to a new level of sophistication, combining a results-oriented focus on execution with an outside perspective that elevated our business. Mark has an uncanny ability to cut through the noise, challenging comfortable habits and long-held assumptions that may sometimes conflict with our stated objectives, and pushing us to make tough calls when needed. He’s definitely provided clarity and valuable insights as we continue to move forward with internal, generational development. With his guidance, we’ve refined our strategy, strengthened our direction, and positioned ourselves for sustained success.
Stephen A. Varone, AIA
Stephen A. Varone, AIAFounder & President, RAND Engineering & Architecture, DPC
Working with Odyssey Advisors has been a game-changer for our business. Mark’s intentional and pragmatic approach helped us cut through complexity and focus on what truly drives success. His thoughtfully candid insights challenged us to think differently while providing real-time adaptability to navigate the nuances of growing a business in our industry. With deep industry knowledge and firsthand experience, Mark is the trusted advisor you need to scale your business in the architecture, engineering, and construction industry.
Matthew Tritt
Matthew TrittPresident, Greenlight Consulting & Management
Working with Odyssey Advisors has been a transformative experience for SBI Consultants. Odyssey's pragmatic and intentional approach to strategic planning has kept scaling our business simple. Mark's firsthand experience navigating the challenges of growth in our industry makes his candid insights and strategies effective which enabled us to tackle challenges with clarity and confidence. Odyssey Advisors' expertise is invaluable to cut through complexity and do simple better.
Wajdi Atallah
Wajdi AtallahPresident, SBI Consultants
What We Do

An intentional, pragmatic, and thoughtfully candid approach to help you Do Simple Better.

ADVISORY

Strategic Planning

We help leaders define a clear vision, align priorities, and build actionable roadmaps that drive sustainable growth. Our process brings clarity, focus, and confident decision-making to your organization.

LEADERSHIP ADVISORY

Through one-on-one strategic guidance, we strengthen leadership skills, improve communication, and help executives navigate complex challenges with confidence. Our work accelerates personal growth and organizational impact.

Transition Advisory

We support leaders and teams through periods of change such as restructuring, succession, or strategic shifts. Our approach ensures clarity, continuity, and a smooth transition while minimizing disruption and strengthening your organization.

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COMMUNITY

AEC Leadership Exchange Community and Boardroom

A trusted space where AEC leaders connect, learn, and grow together. Through curated peer groups, candid discussions, and shared experience, we help leaders gain clarity, strengthen decision-making, and navigate complexity with confidence. The Exchange brings community to your leadership journey so you never have to lead alone.

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Leadership Development

EARN YOUR SEAT AT THE TABLE

This leadership development course transforms technical experts into trusted advisors who move beyond their discipline to help carry the firm forward with confidence. Equip your people to think like owners, communicate like partners, and influence like leaders, so they can help carry the weight of firm growth.

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What we stand on

OUR CORE VALUES

We believe strong leadership starts with character. We embrace authenticity, showing up with honesty, integrity, and accountability in every relationship. We remain humbly confident, striving for excellence while staying teachable, open to feedback, and grounded in our values. 

We also live all in, bringing passion, courage, and a commitment to meaningful impact, growth, and empowerment. These values guide how we think, how we serve, and how we help leaders cut through complexity and create clarity that drives results.

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  • Cultivate and nurture strong, authentic, and collaborative relationships with others.
  • Embody honesty, ethics, and trustworthiness in all your actions and interactions.
  • Follow through on commitments and keep your promises.
  • Adhere to a strong moral and ethical code in all aspects of your life and work.
  • Take responsibility for your actions and decisions and hold yourself accountable for any mistakes or errors.
  • Treat others with respect, fairness, and kindness, and maintain your authenticity even in difficult or challenging situations.
  • Strive for excellence in your areas of expertise, while recognizing your limitations and remaining open to learning.
  • Embrace change and take calculated risks, while staying grounded in your values and principles.
  • Practice humility, remain teachable, and seek feedback from others to improve.
  • Trust in your abilities and judgment, while also recognizing the contributions of others and valuing diverse perspectives.
  • Pursue your passions with enthusiasm and dedication and find fulfillment in your work.
  • Focus on making a positive impact and empowering others, while also setting ambitious goals and pursuing excellence.
  • Continuously seek personal and professional growth and development, while also staying true to your values and priorities.
  • Take bold action and embrace challenges with courage and determination, while also recognizing the importance of balance and self-care. Focus on creating positive change, removing barriers, and empowering others.
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Let’s Start the Conversation

If you are ready to do simple better and move your organization forward with clarity and confidence, we are here as your guide. Reach out today, and let’s build what’s next together.

Email

info@odysseyadvisors.us

Address

2005 Palmer Avenue, Suite 400, Larchmont, NY 10538

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