Leadership

AHMED R. ALI

PRESIDENT AND FOUNDER

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Board Of Directors

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JOSEPH RHODES

CHIEF EXECUTIVE OFFICER

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NATHAN SETH

CHIEF TECHNOLOGY OFFICER

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MICHAEL ROBERTS

CHIEF INFORMATION OFFICER

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LARRY SINNOTT

CHIEF FINANCIAL OFFICER

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JAG GANGAHANUMAIAH

EXECUTIVE VICE PRESIDENT, DELIVERY AND SOLUTIONS

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CHRISTOPHER WOOD

EXECUTIVE VICE PRESIDENT, GROWTH

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SEAN WARNER

VICE PRESIDENT, OPERATIONS

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MUKUL GUPTA

HEAD OF SOLUTIONS

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ULRIKE NASSHAN

VICE PRESIDENT, OPERATIONS (DEPUTY)

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LAUREN R. LAWRENCE

VICE PRESIDENT, HUMAN RESOURCES

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LESLIE TORBETT

VICE PRESIDENT, TALENT ACQUISITION

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ROBERT WILSON

VICE PRESIDENT, QUALITY AND COMPLIANCE

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AHMED R. ALI

PRESIDENT AND FOUNDER

Ahmed R. Ali is the President and Founder of TISTA Science and Technology Corporation.
Experience
Ahmed is a U.S. Navy Veteran, with over 30 years of military, federal government, and civilian experience in engineering, information technology, cybersecurity, and project/program management.  While serving, Ahmed worked on various aspects of engineering, fire control radar, weapons systems, electronic warfare, and communications. Ahmed served onboard an Arleigh Burke-class guided missile destroyer and completed multiple deployments throughout the world in support of various military operations. Duty stations included Recruit Training Command (IL), Naval Surface Warfare Center (VA), Pearl Harbor (HI), Bolling Air Force Base (DC), and the Pentagon (DC).
Education
Ahmed received his B.S. in Information Systems Management from the University of Maryland, an M.S. in Cybersecurity from Capitol Technology University, and holds an MBA with a concentration in International Business.  Ahmed has also completed further executive level education programs at Harvard University, Georgetown University, and Dartmouth College.
Interests
Ahmed enjoys spending time with his family, playing sports, supporting various charitable organizations, different cuisines, traveling, and exploring the world.
 

JOSEPH RHODES

CHIEF EXECUTIVE OFFICER

Joseph Rhodes leads TISTA Science and Technology Corporation's (TISTA) strategic course as the CEO.
Experience
Joe previously served as TISTA’s Chief Operating Officer (COO). Prior to joining TISTA, he served in senior executive leadership roles with Kforce Government Solutions (KGS) and General Dynamics Information Technology (GDIT). Joe has a proven history of providing highly rated solutions to multiple healthcare, intelligence, and homeland security agencies. He also has a wealth of experience in results-driven agile management and innovation approaches, with a focus on high-performance computing and analytics.
Education
Joe holds a Master of Business Administration degree from the University of Mary Washington, as well as a Bachelor of Science degree from Virginia Tech.
Interests
Joe enjoys spending time with his family, reading, and staying physically active outdoors whenever possible. He has a passion for continual learning, particularly around future technologies and concepts.

NATHAN SETH

CHIEF TECHNOLOGY OFFICER

Nathan Seth is TISTA's  Chief Technology Officer (CTO). He is currently focused on architecting, engineering and delivering leading-edge technical solutions in the areas of Health-IT Domain, Open Source Platform and Technologies, Emerging Technologies such as AI, ML, Cognitive search, Digital & Cloud Transformation and Analytics.
Experience
Nathan is an accomplished technology and business executive. As CTO, he leads TISTA’s long-term technology vision and is responsible for assuring the successful execution of the TISTA’s business mission through development and deployment of the TISTA capabilities and solution sets.  Nathan joined TISTA in 2017, having had 22 years of experience in architecting and implementing leading-edge technology solutions in health-IT domain, media and entertainment, API lead revenue generations, web hosting, telecommunications, e-commerce, m-commerce, online advertising, and financial industries. Prior to joining TISTA, he served as CTO in KGS (Kforce Government Solution), held several technical leadership roles in AOL and Wells Fargo, and served as technical consultant to AT&T and IBM.
Education
Nathan holds a Master of Technology Management degree from George Mason University, an MBA from Strayer University, Postgraduate Diploma in Plastics Engineering from CIPET, and a Bachelor of Engineering from Karnatak University, India. He is a certified Federal CIO from the Federal CIO Council.
Interests
Nathan enjoys spending time with his family, exploring new technologies, volunteering and spiritual enrichment.
Other
He is a Certified Product Manager (CPM) and Certified Product Marketing Manager (CPMM) from the Association of Product Management and Product Marketing (AIPMM), tackling the challenges of Big Data Certification from MIT, a Certified Enterprise Architect (CEA), and an Open Group Architecture Framework (TOGAF) certified Enterprise Architect.

MICHAEL ROBERTS

CHIEF INFORMATION OFFICER

Michael Roberts heads TISTA's IT, information security, and innovation initiatives, ensuring that TISTA employees can provide the high delivery quality TISTA is known for.
Experience
Michael Roberts has over 20 years of experience managing and implementing IT complex projects and installations, with emphases in big data/analytics, application development, and agile methodologies across a diverse array of technology, banking, insurance, intelligence community and federal health IT entities.
Education
Michael holds a Bachelor of Science degree in Computer Science from Ashland University in Ashland, Ohio.
Interests
Michael enjoys spending time with his family, exploring new technologies, and volunteering.

LARRY SINNOTT

CHIEF FINANCIAL OFFICER

Larry Sinnott heads TISTA's financial management including forecasting and budgeting, internal controls, financial analysis and reporting, credit, and cash flow management.
Experience
Larry has over 30 years of experience including strong oversight of financial management and reporting, robust internal controls, solid credit, and cash management, financial project oversight in accordance with Federal Acquisition Regulations and Cost Accounting Standards, risk management, and cost reduction and process improvement. He also has international experience operating in the U.K., UAE, Philippines, and hostile work environments.
Education
Larry has both a bachelor's degree in Accounting and an Executive MBA from Virginia Tech.
Interests
Larry enjoys many sports activities, spending time with family, and various hobbies.
Other
Certified Public Accountant, State of Virginia, Member of the Virginia Society of CPAs and American Institute of CPAs.

JAG GANGAHANUMAIAH

EXECUTIVE VICE PRESIDENT, DELIVERY AND SOLUTIONS

Jag Gangahanumaiah heads TISTA's Federal Delivery, bridging people, process and technology for attaining the highest possible level of quality, consistency, efficiency of customer engagement.
Experience
Jag is a seasoned IT professional experienced in successfully implementing solutions across multiple federal and commercial agencies for the past 25 years at UHG/Optum, IBM, PwC & TCS. He was most recently the Sr. VP at UHG/Optum (OptumServe Technology Solutions, formerly QSSI) where he led a portfolio of Federal IT programs serving CMS, Education, and HUD customers.
Education
Jag holds a Bachelors in Electronics Engineering from Bangalore University, India and a Healthcare MBA from OPUS College of Business, St. Thomas University, MN.
Interests
Wellness workshops, Helping non-profits, Self exploration, Being Human

CHRISTOPHER WOOD

EXECUTIVE VICE PRESIDENT, GROWTH

Christopher Wood is responsible for leading business development strategy, driving long term strategic partnerships, and identifying new markets and clients.

SEAN WARNER

VICE PRESIDENT, OPERATIONS

Sean Warner leads the operations of all project teams in TISTA’s CMS, VA and, FedCiv business units. He is instrumental in organizing activities between all corporate departments and providing leadership to the Project Director team.
Experience
Mr. Warner has nearly 25 years of experience working with the Centers of Medicare and Medicaid Services performing a variety of technical tasks from data analytics, quality control, lean management, IT technologies, paper to image conversion, workflows and application development. He is experienced in managing program level financials, human resources, and converting business needs into technical requirements.
Education
Mr. Warner completed his MBA in Marketing, and Bachelor of Science degree in Mathematics from York College of Pennsylvania.
Interests
Mr. Warner enjoys spending time with his family, coaching youth soccer, and being a positive role model for kids. He holds a 2nd degree black belt in Taekwondo and enjoys the leadership which comes from the discipline. He is addicted to Cheetos!

MUKUL GUPTA

HEAD OF SOLUTIONS

Mukul Gupta as head of solutions in involved with conceptualizing, developing and supporting robust and innovative solutions across the portfolio of TISTA’s projects.
Experience
A hands on, experienced problem solver who has been involved with large scale and highly performant enterprise software solutions for the past 20 years. He was most recently the Chief Technical Architect of an ERP product built for public sector entities (CGI Advantage ERP). Mukul’s expertise and technical interests include programming languages, distributed computing, data engineering and machine learning applicability, techniques and use cases for line of business applications.
Education
Mukul graduated with a Bachelor of Technology degree from the Indian Institute of Technology, Delhi, India and then earned a Ph.D. degree in Engineering from Drexel University, Philadelphia, PA.
Interests
A history buff who loves to cook and experiment with different cuisines.

ULRIKE NASSHAN

VICE PRESIDENT, OPERATIONS (DEPUTY)

Ulrike Nasshan provides support to all operational programs and projects through advisory and leadership with focus on people, processes and tools, which also includes the interoperability between TISTA’s corporate departments and projects.
Experience
Ms. Nasshan brings more than 20 years of strategic leadership, advisory and management of modernization efforts at federal government agencies such as the Department of Veterans Affairs (Health IT), Department of Health and Human Services (NIH/AHRQ/ONC) and Department of Education. She has extensive experience leading diverse, high-performing teams in the design and delivery of cost-effective solutions at the project, program and portfolio level following agile and SAFe development processes, including DevOps and cloud migration. Building trusted relationships with senior management and serving as the liaison between business and technical teams promotes the delivery of solutions meeting customer expectations, business value and agencies mission.
Education
Ms. Nasshan completed her MBA in IT Management and holds a Diploma in Adult Education from St. Francis Xavier University in Toronto/Canada.
Interests
Ms. Nasshan enjoys spending time with her family, yoga, traveling, and volunteering.

LAUREN R. LAWRENCE

VICE PRESIDENT, HUMAN RESOURCES

Lauren R. Lawrence heads TISTA's human resources, engagement, and experience initiatives.
Experience
Lauren has over 20 years of talent experience primarily in government contracting and technical professional services. Her strengths include leading HR and talent teams to produce effective programs and strategies that support our talent experience while driving business results. Lauren has extensive experience in developing and implementing creative programs to attract, retain, and engage highly sought-after skillsets in competitive environments. She truly enjoys understanding talent, markets, and business to promote TISTA’s employee-centric and community-minded culture.
Education
Lauren earned her bachelor's degree in Business Administration from the University of Maryland.
Interests
Lauren enjoys spending time with her family, travel and being outdoors. Lauren and her family also spend time volunteering in their local community.

LESLIE TORBETT

VICE PRESIDENT, TALENT ACQUISITION

Leslie Torbett is TISTA's Vice President of Talent Acquisition. Leslie is responsible for delivering innovative perspectives and providing hands-on guidance in the strategy, development, and execution of high-impact talent acquisition solutions.
Experience
Leslie brings more than 20 years of Talent Acquisition experience to TISTA. Before joining TISTA, Leslie was the Senior Director of Talent Acquisition for Cobham Advanced Electronic Solutions (CAES), a 3600 person, nationwide company. Under her leadership, CAES was able to drive efficiencies, expand capabilities, and increase delivery of critical resources. Prior to working at CAES, Leslie was Director of Recruiting for Acentia, where she helped to lead the company through five corporate acquisitions in three years, effectively merging people, process, and technology. Before being acquired by Acentia, Leslie served as Director of Recruiting for 2020 Company, where she successfully brought the company from 80 resources to 750 resources in five years. Leslie also worked at AMS/CGI for many years as a Strategic Workforce Manager serving several of the company's business units.
Education
Leslie majored in Business Administration at Mary Washington University and is pursuing her MBA from Western Governors University. Leslie is a certified AIRS (an ADP company) recruiter to include Professional Recruiter Certification (PRC), Certified Diversity Recruiter (CDR), Advanced Certified Internet Recruiter (CIR) (ACIR), Certified Social Media Recruiter (CSMR), Certified Social Sourcing Recruiter (CSSR) and Elite Certified Recruiting Expert (ECRE)
Interests
When she isn't working, Leslie enjoys hosting gourmet dinners for close friends and family, going fishing, live music, and reading. Leslie is passionate about making this world a better place and frequently volunteers to support animal welfare and homeless initiatives.
Other
Society for Human Resource Management (SHRM) member, The Staffing Alliance of Virginia Employers (Project SAVE) member, RecruitDC member, Former Board member of Byte Back.

ROBERT WILSON

VICE PRESIDENT, QUALITY AND COMPLIANCE

Robert Wilson leads TISTA’s quality and compliance team responsible for ensuring TISTA is optimizing delivery performance and customer satisfaction across all of its programs and projects. Robert also leads all of TISTA’s CMMI and ISO certification activities.
Experience
Robert Wilson has over 30 years of administrative management, IT project and quality management, and business process engineering experience in the public and private sectors.
Education
Robert holds a Masters of Business Administration Degree from the University of Western Ontario and a Diploma of Technology in Operations Management from the British Columbia Institute of Technology.
Interests
Robert enjoys boating and water skiing, family and friends, volunteering, and keeping up with local, national, and international news.

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