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Who we are - Navajo Nation Corporation, Tribal Corporation - Diné Development Corporation

Mission Focused. Legacy Inspired. Community Driven.

Purpose-driven Innovation.
Mission-focused Impact.

VISION

Leverage our legacy to advance the future of the Navajo Nation and achieve sustainable community prosperity.

MISSION

To provide government agencies and commercial organizations with IT, engineering, and professional services that support our clients’ missions while building upon the legacy of the Navajo Nation to elevate our people and the communities we serve.

CORE VALUES

Commitment to Excellence
Devoted Service
Unwavering Integrity
Bold Ingenuity
Community Conscious
Heritage Inspired

Our Story

Inspired by our legacy, Diné Development Corporation (DDC) was founded to create sustainable prosperity for the Navajo Nation through exceptional service to the federal government. Today, DDC has grown into a dynamic family of companies delivering IT, engineering, and professional services that support defense, civilian, healthcare, and environmental missions worldwide.

As government organizations navigate an evolving federal landscape, they need trusted partners that can modernize critical systems, strengthen resilience, and deliver mission success. At DDC, we combine legacy-inspired ingenuity with mission-first innovation to solve complex challenges with agility, precision, and measurable impact.

Our portfolio of companies offers proven federal delivery and mission-ready solutions that accelerate modernization, improve operational efficiency, and reduce risk. By pairing deep technical expertise with a mission-first approach, we help agencies adapt to changing requirements while advancing mission outcomes with confidence.

As a Navajo Nation owned organization, our purpose extends beyond the mission. We are committed to creating lasting economic opportunity, fostering sustainable growth, and investing in the future of the communities we serve. Every engagement reflects our belief that innovation should deliver meaningful impact—for our customers, our people, and future generations.

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Austin CEO Headshot

A Message From Our CEO

Growth is defined as the process of growing in size.  We know growth can be difficult.  We know growth has its pains.  But it is a natural process that must be embraced to be who we are supposed to be. 

For more than two decades, Diné Development Corporation (DDC) has aligned the needs of its customers with Navajo principles to allow them to grow.  We are proud to be guided by the tenets of Navajo heritage to allow our customers to expand their ambitions and fulfill their missions. 

Whether your organization’s mission is to grow in capabilities, strength, or impact, we have a proven track record of adjusting to our own growth to do those very things.  Allow us to share our expertise in helping to make your growth successful. 

We are mission focused, legacy inspired, and community driven. 
We are DDC.

Sincerely,

Austin Tsosie, Chief Executive Officer

Navajo Impact

Inspired by our legacy, DDC is committed to creating lasting opportunity for the Navajo Nation. Our mission extends beyond delivering exceptional solutions to the federal government. We reinvest our success to strengthen the communities we serve through economic development, workforce advancement, education support, and strategic community partnerships.

As a Navajo Nation owned organization, we believe that innovation should create meaningful impact for future generations. Through strategic growth and continued investment, DDC provides financial support, leadership, and community-focused programs that help foster long-term prosperity and empower the Navajo people.

To learn more about DDC’s sponsorship initiatives, visit our Sponsorship page or submit inquiries to ddcdonations@ddc-dine.com.

Sponsorship

Our History

Customizable Architecture
NOVA Corporation (NOVA-Diné) becomes DDC’s first 8(a) certified subsidiary.
NOVA Corporation (NOVA-Diné) becomes DDC’s first 8(a) certified subsidiary.
DDC founds two additional subsidiaries, DDC IT Services and DDC Construction Services (DDC 4C).
DDC founds two additional subsidiaries, DDC IT Services and DDC Construction Services (DDC 4C).
DDC develops two additional subsidiaries, BRIC, an environmental services company, and Diné Source, an IT services company.
DDC develops two additional subsidiaries, BRIC, an environmental services company, and Diné Source, an IT services company.
DDC 4C acquires AScIS to expand its environmental service lines of business.
DDC 4C acquires AScIS to expand its environmental service lines of business.
BRIC acquires Ecosystem Management, Inc. (EMI) to expand its environmental capabilities.
BRIC acquires Ecosystem Management, Inc. (EMI) to expand its environmental capabilities.
DDC establishes North Stone, an IT and professional services company.
DDC establishes North Stone, an IT and professional services company.
DDC founds Red Canyon Technologies, an IT services company.
DDC founds Red Canyon Technologies, an IT services company.

Meet Our Leadership

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AUSTIN TSOSIE

Chief Executive Officer

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DANIEL RIGGS

Chief Growth and Strategy Officer

Zach360x268

ZACHARY SAMPSON

Chief Financial Officer

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JENNIFER CREAMER

Chief Business Officer

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DALE WARD

Chief AI & Innovation Officer

Board of Directors

TAZBAH MCCULLAH

BOD Chair

MARK FREELAND

BOD Secretary

NICOLE JOHNNY

Board Member

CARLOS OTAL

Board Member

ROBERT NELLER

Board Member

Jackson S. Brossy

Board Member

Doreen McPaul

Board Member

Lacey Calac Dunne

Board Member

Contact Us

Give us a call

717-262-9750

Email Us

info@ddc-dine.com

Headquarters Address

8840 E. Chaparral Rd.
Suite 145
Scottsdale, AZ 85250

Austin Tsosie
Chief Executive Officer

As DDC Chief Executive Officer, former President of DDC IT Services, and Diné tribal member, Austin Tsosie has been very successful in shaping the organization’s culture, building operations, fueling business development, and enhancing tribal relations to position DDC subsidiaries as elite, Navajo owned businesses.

Austin obtained a Bachelor of Science in computer science from Weber State University and master’s degree in business administration from the University of Dallas. He began his career as a network administrator and software engineer for small companies. As his career progressed, he fulfilled project management positions in support of worldwide operations. He led the creation of project management offices and developed management processes for three large companies across various industries. He served as a Principal PPM consultant for a global company that offers business consulting, technology, engineering, and outsourcing services. Austin served as the United States PPM resource in supporting firms that spanned the manufacturing, entertainment, and banking industries. Austin served as DDC IT Services President, in which he grew the company from one employee to more than 100 employees and $16 million in revenue over five years.

Daniel Riggs
Chief Growth Officer

Daniel (Dan) Riggs, Chief Strategy Officer, possesses 20 years of portfolio management and leadership experience in the federal contracting industry. In these roles, he oversaw portfolios across Department of Defense, NASA, and commercial markets. As an innovative thought leader in the industry, he brings success in business development and growth sectors.

Dan Riggs holds a Bachelor of Science in management information systems and finance from Wright State University. He was also a member of the Ohio Air National Guard and distinguished graduate of Basic Military Training School and Reserve Officer Training Corps. Dan has obtained multiple project management and technology certifications in a variety of disciplines throughout his career.

Zachary Sampson
Chief Financial Officer

Zachary Sampson’s background is a blend of corporate finance and entrepreneurship. He is the Chief Financial Officer for Diné Development Corporation (DDC), a Navajo Nation owned company. He earned an undergraduate degree in finance from the University of Massachusetts, a CPA designation, and an MBA in finance from Rice University. Working for some of the largest and most prestigious international firms, Zach’s corporate experience includes running the finance group for a publicly traded biotech firm, mergers and acquisitions for several Fortune 50 companies, and commodities and equity derivatives trading. As a successful entrepreneur, Zach has a proven track record of developing and growing businesses across different industries.

Jennifer "Jen" Creamer
Chief Business Officer

Jennifer Creamer is an executive with more than 20 years of experience supporting federal missions through strong operations, disciplined execution, and scalable growth. As Chief Business Officer, she is responsible for aligning business operations, infrastructure, and talent to ensure consistent, compliant, and high‑quality delivery for government customers.

Jennifer oversees enterprise business enablement functions including human resources, information technology, contracts, pricing, revenue operations, marketing, and risk management. She works closely with executive leadership to translate strategy into operational readiness, ensuring the organization is structured to support customer missions while scaling responsibly.

Throughout her career, Jennifer has led complex growth and transformation initiatives, including post‑acquisition integration, enterprise operating model design, and workforce modernization. She is known for building strong foundations, clear governance, standardized processes, and data‑driven decision frameworks, that enhance performance, transparency, and accountability.

Jennifer brings a deep understanding of federal contracting environments and compliance requirements, paired with modern enterprise experience gained through leadership roles supporting global organizations. Her approach emphasizes reliability, clarity, and partnership, making her a trusted collaborator with government customers and industry partners alike.

She is recognized for principled leadership, operational excellence, and a steadfast commitment to mission success.

DALE WARD Chief AI & INNOVAtion OFFICER

Dale Ward, Chief AI & Innovation Officer recognizes his vision for establishing innovation as a formal business capability at DDC and advancing an AI-first operating model. As Executive Vice President of Innovation, Dale created the Innovation 2.0 operating model, grounded in DDC’s heritage-inspired accountability and mission-first ethos, and built the Strategic Innovations Team into a scalable enterprise function delivering a robust portfolio of Solution Accelerators embedded across our customer missions. 

Anticipating AI’s transformation of the consulting industry, Dale authored and is leading DDC’s AI-first strategy, positioning the enterprise and its offerings through compliant AI infrastructure and agent-enabled workflows that enhance decision-making, knowledge management, and mission execution. 

A 30-year IT veteran and recognized authority in data and AI, Dale has led the development of enterprise strategies for multiple DoD organizations, with prior work recognized by the 2020 Innovation in Government Award. Known for his servant-leadership approach, Dale continues to scale innovation and responsible AI in service of DDC’s customers and the Navajo people. 

Tazbah Mccullah
BOD Chair

Tazbah McCullah is a Diné tribal member and possesses an extensive career in communications. She was recently appointed as the General Manager for KSFR 101.1 FM, Santa Fe Public Radio. Previously, Ms. McCullah served as the Marketing/Advertising Director for Indian Pueblos Marketing, Inc./Indian Pueblo Cultural Center, Inc. Ms. McCullah served in leading communications roles, including Vice President of the Navajo Nation; Press Secretary for the Navajo Nation Office of the President; General Manager for KTNN/KWRK Radio; and Associate Producer for KAET-TV, an award-winning weekly news analysis program.

Ms. McCullah was also the managing partner of the TM Group, a land-use planning and architectural design company that produces designs used on the Navajo Nation. Ms. McCullah holds a Bachelor of Arts degree in journalism from the University of New Mexico. She is also a member of the NOVA Scholarship Committee, which she helped to establish in 2010.

Mark Freeland BOD Secretary

Mark Freeland is a former Council Delegate of the 24th Navajo Nation Council, the legislative branch of the Navajo Nation Government. In this role, he served on the Council’s Resources and Development Committee (RDC) regulating authority of the Navajo Nation’s environmental and cultural resources, economic development, and other areas vital to Tribal sustainability. Mr. Freeland formerly served as Executive Staff Assistant for the Navajo Nation Office of the President and Vice President and is currently pursuing an MBA from the University of New Mexico.

Nicole Johnny
Board Member

Nicole Johnny is a Diné tribal member and possesses extensive experience in real estate and investment financing with a specialty in researching and analyzing business development. Her background is highlighted by experience in investment banking with RBC Capital Markets, tribal land valuations from both federal and Tribal perspectives, and commercial real estate development. She received a Master of Business Administration in finance from Pepperdine University and undergraduate degree in finance and economics.

Carlos Otal
Board Member

A transformational leader with more than 33 years of experience serving the public sector and financial services institutions, Carlos Otal brings a creative vision, analytical mindset and disciplined approach to growth-oriented professional services businesses. The former National Managing Partner, Grant Thornton LLP’s Public Sector, Carlos is a seasoned executive who brings hands-on, real-world expertise, having led growth strategy, market development and service delivery, as well as the full range of back-office operations, culminating most recently in the successful sale, transition and integration of the practice.

At the helm of the Public Sector practice, he grew the government contracting business to over $300M revenue in existing and new market segments, leading, developing and mentoring a team of skilled executives; navigated into new solution areas and through prospective acquisitions and joint ventures, exponentially expanding brand, pipeline and deal size; and meaningfully grew revenue, margins and distributable income, while maintaining exceptional client performance ratings and managing enterprise risk and regulatory compliance. Additionally, Carlos oversaw the firm’s Public Policy & Governmental Affairs and served on the Executive Leadership Team.

As a management consultant, his experience spans the full range of advisory and assurance services — from internal and financial statement auditing to organizational and process improvement to the assessment and implementation of enterprise systems, including program management, strategy, acquisition and business model development for clients undergoing transformational change.

Prior to joining Grant Thornton in 2005, Carlos enjoyed a distinguished career of increasing responsibility and impact at Price Waterhouse/PwC/IBM and Oracle/PeopleSoft, serving numerous Fortune 500 financial institutions as well large governmental entities. In addition, he has held a number of board positions, including the GT Public Sector LLC Board, GT PAC Board, Professional Services Council (PSC) Board and Association of Government Accountants (AGA) National Governing Board. A visible advocate and proponent of DEI&A, Carlos serves on the Virginia Society of CPAs (VSCPA) DEI Advisory Council and is the Chair of the Advisory Board of the Dream Project.

Carlos is a graduate of the Pamplin College of Business at Virginia Tech and has a Certificate in Transformational Leadership from the Saïd Business School at Oxford University.

Robert Neller
Board Member

General Robert B. Neller served as the 37th Commandant of the United States Marine Corps from September 2015 to July 2019.

He retired from active duty in 2019. A native of East Lansing, Michigan, Neller graduated from the University of Virginia in 1975 with a degree in history and speech communication. He later earned a master’s degree from Pepperdine University in human resources management. After graduating from Virginia, Neller went directly into the Marine Corps via the Platoon Leader Class.

A career Infantry Officer, Neller has commanded from Platoon through Service Component HQs. He has been assigned as a General Officer in each of the three USMC active infantry Divisions and commanded the 3rd Marine Division. He is a joint qualified Officer having served in Europe at SHAPE as a NATO staff officer and as the J3 of the Joint Staff. Operationally, he participated in Operation Just Cause in Panama, Operation Restore Hope in Somalia and Operation Iraqi Freedom. In OIF 05-07 during 2006, he served as the Deputy Commanding General for Multi-National Force West in Iraq’s Anbar Province.

He has attended the USMC’s Basic School, the Army’s Armor Officer Advanced Course, USMC Command and Staff, the NATO Defense College and the Armed Forces Staff College.

Upon retirement he moved to the Austin, Texas area where he is involved in consulting, teaching, motivational speaking and serving as the Chairman of the Board of the Marine Corps Scholarship Foundation.