Unleashing the Power of People!
Onzelo Markum III is the Principal of The Markum Group, LLC which is a high-impact leadership consultancy based in Houston. An empowering motivator who drives positive change, builds consensus, and is an authentic group facilitator, Onzelo provides leadership development & consulting, mergers and acquisitions advice, executive & team coaching, and organizational development and culture development services to senior leaders, their executive teams, and their Boards of Directors.
As a trusted advisor, Onzelo helps leaders in small and middle market organizations accelerate their professional development, mitigate the human capital risk in mergers and acquisitions to maximize the likelihood of a successful merged/acquired organization, and build high-performance teams, cultures, and organizations.
Onzelo's multidisciplinary approach, dynamic personality, and astute business insights and acumen have guided senior leaders for more than two decades. Senior leaders at organizations such as Memorial Hermann Hospital, Swift Energy, BP, The Receivables Exchange, KGB Texas, Growthforce, LLC , DISA Global Services, NewQuest Properties, and Texas A & M University as well as political leaders at the state, county, and local level in Texas have engaged him as an executive coach, facilitator, and trusted advisor.
In his role as a Strategic Change Partner Lead for USAA’s Property & Casualty (P&C) company, Onzelo served as a trusted advisor to P&C’s executive team including the P&C President and provided full-cycle change management support from strategy to execution that impacted more than 15,000 employees. A Certified Post Merger Integration Expert (CPMI), Onzelo also led high-impact change initiatives for large transformations in P&C, including P&C’s 2023 Op Model redesign and the successful acquisition & integration of FinTech company Noblr into P&C’s Auto Line of business (the P&C company’s first acquisition).
In his role as Senior Vice President, Head of Culture and Organizational Performance for The Receivables Exchange (TRE), Onzelo served as a trusted advisor to the CEO and was the Chief Human Resources Officer for a fast-growing venture back firm that earned The Wall Street Journal’s Technology Innovation Award and grew over 450% in 2010. Onzelo was primarily responsible for developing the organization’s leaders and building and strengthening the management team.
As a trusted advisor, Onzelo helps leaders in small and middle market organizations accelerate their professional development, mitigate the human capital risk in mergers and acquisitions to maximize the likelihood of a successful merged/acquired organization, and build high-performance teams, cultures, and organizations.
Onzelo's multidisciplinary approach, dynamic personality, and astute business insights and acumen have guided senior leaders for more than two decades. Senior leaders at organizations such as Memorial Hermann Hospital, Swift Energy, BP, The Receivables Exchange, KGB Texas, Growthforce, LLC , DISA Global Services, NewQuest Properties, and Texas A & M University as well as political leaders at the state, county, and local level in Texas have engaged him as an executive coach, facilitator, and trusted advisor.
In his role as a Strategic Change Partner Lead for USAA’s Property & Casualty (P&C) company, Onzelo served as a trusted advisor to P&C’s executive team including the P&C President and provided full-cycle change management support from strategy to execution that impacted more than 15,000 employees. A Certified Post Merger Integration Expert (CPMI), Onzelo also led high-impact change initiatives for large transformations in P&C, including P&C’s 2023 Op Model redesign and the successful acquisition & integration of FinTech company Noblr into P&C’s Auto Line of business (the P&C company’s first acquisition).
In his role as Senior Vice President, Head of Culture and Organizational Performance for The Receivables Exchange (TRE), Onzelo served as a trusted advisor to the CEO and was the Chief Human Resources Officer for a fast-growing venture back firm that earned The Wall Street Journal’s Technology Innovation Award and grew over 450% in 2010. Onzelo was primarily responsible for developing the organization’s leaders and building and strengthening the management team.
Under his leadership, TRE’s management team was chosen as the 2011 American Business Award winner for Management Team of the Year. The American Business Awards program, also known as the Stevies®, is the only national, all-encompassing business awards program in the United States and recognizes outstanding performance by executives and organizations across the country. TRE’s management team was selected for its exemplary cohesion, business acumen and commitment to employees and a high-performing culture.
On the culture side, Onzelo’s innovative strategies around improving employee engagement and fostering a high performing culture led to an increase in morale and productivity that earned TRE a coveted listing as one of the Best Places To Work in New Orleans for 2011 after a two-year absence from the list.
Prior to his work at The Receivables Exchange, Onzelo was a leadership consultant / executive coach for Administaff (now Insperity). Insperity, a Fortune 1000 company and the leading PEO in America, serves as a trusted advisor to more than 5,000 successful small and medium sized businesses and provides an array of human resources and business solutions designed to help improve business performance.
Onzelo delivered executive coaching services, facilitated leadership retreats and provided strategic advice designed to help Insperity's clients develop more impactful leaders, build high-performance teams, and harness the power of a highly engaged workforce. Onzelo also created and co-facilitated the charter Administaff CEO Council, which was a structured peer-to-peer consulting group that brought 12 – 14 business owners, company presidents and CEOs together in a confidential environment on a monthly basis to discuss strategic issues and develop growth strategies.
Prior to joining Administaff, Onzelo served as the Principal The Markum Group, LLC. Onzelo started The Markum Group, LLC after co-founding CoVenture Consulting, LLC, a management consultancy focused on equipping organizations with the capacity to lead change and transition, foster a high performance culture, and develop effective leaders; he also led CoVenture's Houston-based Human Capital practice.
Onzelo is a dynamic, results-oriented leader with more than two decades of experience in the public and private sectors building and leading high-performance teams and achieving breakthrough results. Onzelo is an honorably retired law enforcement veteran with over eighteen years of distinguished service as a Texas police officer. During his decorated law enforcement career in League City (TX), Onzelo worked his way through the ranks to Patrol Sergeant, earned an MBA, and served as one of the first officers on League City’s SWAT team.
Onzelo also received the police department’s second highest departmental award, the Medal of Valor; awarded to police officers who perform an act of extraordinary bravery while engaged in personal combat with an armed adversary under circumstances of imminent personal hazard to life. Specifically, the Department Medal of Valor is awarded for acts of gallantry and valor performed with knowledge of the risk involved, above and beyond the call of duty.
Onzelo’s natural leadership abilities and his reputation as an innovator led to his appointment to the Texas Commission on Law Enforcement by then Governor George W. Bush. During Onzelo’s seven-year tenure, the Commission was refocused into a client-centered agency, with a reputation for innovative training programs designed to develop the skills and improve the professionalism of the more than 70,000 peace officers in Texas. As the senior member of the Executive Committee, Onzelo oversaw the agency’s initiative to become the first state-level training commission in the world to achieve international accreditation.
Onzelo is an accomplished facilitator who uses his energy, impact and diverse life and business experience to help leaders at all levels identify and remove barriers that hinder high performance; he works with clients to help align people programs with organizational strategy, culture, and values.
Onzelo, a dynamic and engaging speaker, presents on such topics as "Overcoming the Five Dysfunctions of a Team” and has written numerous articles on leadership development and building a high-performance culture. Onzelo also co-authored the book “Winning Through Transitions: Leading The Human Side of Change”.
Onzelo is certified as a Post Merger Integration Expert by the Institute for Mergers, Acquisitions, and Alliances, certified in Leading Organizational Transitions by Dr. William Bridges & Associates, certified as a leadership facilitator by Development Dimensions International (DDI) and is a Prosci® Certified Change Practitioner.
Onzelo is certified/qualified to administer a wide array of assessment tools and surveys including 360 degree feedback instruments, DISC, and the Thomas-Kilmann Conflict Mode Instrument.
Onzelo holds an undergraduate degree in Political Science from the University of Houston at Clear Lake and a Master of Business Administration degree from the Executive MBA program at Texas A & M University.
On the culture side, Onzelo’s innovative strategies around improving employee engagement and fostering a high performing culture led to an increase in morale and productivity that earned TRE a coveted listing as one of the Best Places To Work in New Orleans for 2011 after a two-year absence from the list.
Prior to his work at The Receivables Exchange, Onzelo was a leadership consultant / executive coach for Administaff (now Insperity). Insperity, a Fortune 1000 company and the leading PEO in America, serves as a trusted advisor to more than 5,000 successful small and medium sized businesses and provides an array of human resources and business solutions designed to help improve business performance.
Onzelo delivered executive coaching services, facilitated leadership retreats and provided strategic advice designed to help Insperity's clients develop more impactful leaders, build high-performance teams, and harness the power of a highly engaged workforce. Onzelo also created and co-facilitated the charter Administaff CEO Council, which was a structured peer-to-peer consulting group that brought 12 – 14 business owners, company presidents and CEOs together in a confidential environment on a monthly basis to discuss strategic issues and develop growth strategies.
Prior to joining Administaff, Onzelo served as the Principal The Markum Group, LLC. Onzelo started The Markum Group, LLC after co-founding CoVenture Consulting, LLC, a management consultancy focused on equipping organizations with the capacity to lead change and transition, foster a high performance culture, and develop effective leaders; he also led CoVenture's Houston-based Human Capital practice.
Onzelo is a dynamic, results-oriented leader with more than two decades of experience in the public and private sectors building and leading high-performance teams and achieving breakthrough results. Onzelo is an honorably retired law enforcement veteran with over eighteen years of distinguished service as a Texas police officer. During his decorated law enforcement career in League City (TX), Onzelo worked his way through the ranks to Patrol Sergeant, earned an MBA, and served as one of the first officers on League City’s SWAT team.
Onzelo also received the police department’s second highest departmental award, the Medal of Valor; awarded to police officers who perform an act of extraordinary bravery while engaged in personal combat with an armed adversary under circumstances of imminent personal hazard to life. Specifically, the Department Medal of Valor is awarded for acts of gallantry and valor performed with knowledge of the risk involved, above and beyond the call of duty.
Onzelo’s natural leadership abilities and his reputation as an innovator led to his appointment to the Texas Commission on Law Enforcement by then Governor George W. Bush. During Onzelo’s seven-year tenure, the Commission was refocused into a client-centered agency, with a reputation for innovative training programs designed to develop the skills and improve the professionalism of the more than 70,000 peace officers in Texas. As the senior member of the Executive Committee, Onzelo oversaw the agency’s initiative to become the first state-level training commission in the world to achieve international accreditation.
Onzelo is an accomplished facilitator who uses his energy, impact and diverse life and business experience to help leaders at all levels identify and remove barriers that hinder high performance; he works with clients to help align people programs with organizational strategy, culture, and values.
Onzelo, a dynamic and engaging speaker, presents on such topics as "Overcoming the Five Dysfunctions of a Team” and has written numerous articles on leadership development and building a high-performance culture. Onzelo also co-authored the book “Winning Through Transitions: Leading The Human Side of Change”.
Onzelo is certified as a Post Merger Integration Expert by the Institute for Mergers, Acquisitions, and Alliances, certified in Leading Organizational Transitions by Dr. William Bridges & Associates, certified as a leadership facilitator by Development Dimensions International (DDI) and is a Prosci® Certified Change Practitioner.
Onzelo is certified/qualified to administer a wide array of assessment tools and surveys including 360 degree feedback instruments, DISC, and the Thomas-Kilmann Conflict Mode Instrument.
Onzelo holds an undergraduate degree in Political Science from the University of Houston at Clear Lake and a Master of Business Administration degree from the Executive MBA program at Texas A & M University.
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Contact Onzelo at 832.377.1031 or via e-mail at: omarkum@markumgroup.com
when you are ready to jump start or accelerate your journey towards high performance. |
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