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About Us

Who We Are

Our Company

G²S Corporation emerged in 2009 as an Award-Winning SBA-certified Small Disadvantaged Business (SDB) resource company for government, commercial, and DoD agencies. Focused on forward-thinking consultation, solution management, and capabilities assessments, we strategically pair our professional resources with project requirements to reach our customers’ end goal, all within budget and timeline. As a member of G²S-4ES JV, LLC, G²S Corporation has been accepted onto the GSA 8(a) STARS III contract vehicle.

Guided by core principles, ethics and achievement, G²S gains and utilizes best practices through global engagements and partnerships worldwide.

Sam Trevino


Sam Trevino founded G²S Corporation in 2009 to provide Healthcare & Science, Information Technology and Financial & Program Management services to U.S. Government Agencies.  

As President/CEO of G²S, Mr. Trevino is responsible for worldwide sales and operations, as well as management, service, and support in all markets and regions. He also heads the Human Resources division and plays a key role in the continued development of personnel, recruiting, and retention strategies to ensure flexibility in response to an increasingly demanding marketplace.  

Under his leadership, G²S has become a national award-winning resource company for U.S. Government agencies such as the Centers for Disease Control and Prevention, Air Force, Army, Navy, and Marines.  G²S was recognized by Inc. Magazine in 2018 as the second fastest-growing company in San Antonio and is one of the fastest-growing companies in the United States.  G²S has received national and local accolades such as the 2015 National and Local Contractor of the Year for the U.S. Army, and the 2015 & 2018 San Antonio Business Opportunity Council Minority Enterprise Development award.

Executive Staff

Crystal Martin

Human Resources Director/Customer Support Specialist

Crystal Martin serves as the Human Resources Director/Customer Support Specialist, focused on employee and customer relations.  Ms. Martin has over 15 years of experience in Human Resources, with core functions built around payroll, onboarding and offboarding, compliance, benefits administration, and overall customer experience.  Ms. Martin has supported countless clients, employees, managers, and recruiters across several industries, including Professional Services, Engineering & Sciences, Industrial & Manufacturing, and Federal Government Contracts.

Ms. Martin’s main responsibilities at G2S Corporation include all Human Resource functions to include on-boarding, counseling, benefits administration, and serving as the liaison between the customer and our employees.  Ms. Martin has always made her goal to provide the highest level of service possible, while building strong business relationships, and has been instrumental in ensuring everyone is set up for success.

Kathy Henderson

Proposal Manager

Kathy Henderson, with 25+ years of experience in Proposal Development, Business Development, Project Management, and Program Management serves as G²S Proposal Manager.  She supports the internal Business Development and Capture team to strategically determine the scope of work for each contract and submit recommendation to senior staff.  She leads the Proposal team, including technical writers and subcontractors to increase company revenue and client database.

Her overall proposal experience includes providing responses for the Centers for Disease Control and Prevention (CDC), Department of Defense (DoD), US Air Force. US Army, US Navy, NASA, and the FBI.  Some contracts include OASIS(8(a), SB), GSA (Schedule 70, MAS-HACS & STARS II&III), Enterprise Cyber Capabilities (EC2), ALLIANT, CIOSP (2,3,4), and NeXtGen. During her career proposal submissions ranged in values of $10 – $100 million.

Dave Borski

Lead Consultant

Dave Borski, with 23+ years of experience in Engineering and Corporate Management across various industries, serves as G²S’s Lead Consultant. He specializes in problem analysis, strategic planning, and cost-effective solution development for Federal clients.

Mr. Borski has worked in a wide range of industries including Defense, Medical, Food & Beverage, Automotive, and Semiconductor. Mr. Borski’s dedication to and improving operations has driven significant growth and success in meeting Federal agency needs.

Bobby Eaton

Technology Infrastructure Specialist

Bobby Eaton serves as an Information Technology Infrastructure Specialist.  Mr. Eaton has over 25 years of experience in Information Technology with core functions that include, Helpdesk Tier 1 and 2 as well as SharePoint and Site Collection Administrator.  Most of Mr. Eaton’s experience and training was established in his 22 years in the US Air Force.

Mr. Eaton’s main responsibilities at G²S Corporation include serving as SharePoint and Site Collection Administrator supporting the United States Air Force Field Training Scheduling System (FTSS) which supports over 30k Air Force Active Duty, Reserve and Guard personnel in scheduling for training for their respective Air Force Specialty Code.

Lori Martone

Senior Accountant

Lori Martone serves as the Senior Accountant for G2S Corporation and has over 20 years of experience in accounting, with core functions built around financial analysis, growth, and compliance.  Ms. Martone has supported several clients across numerous industries including Professional Services, Retail, Food Services, Non-Profits, and Federal Government Contracts.

Ms. Martone’s main responsibilities at G²S Corporation include all accounting functions, full cycle accounting, A/P, A/R, payroll, complete financial preparation and analysis, job costing, and pricing.  Ms. Martone has always made her goal to provide the highest level of service possible and ensure the integrity and accuracy of financial data.

Cynthia Rendon

Lead Recruiter and Human Resource Support Specialist

Cynthia Rendon is the Lead Recruiter and Human Resource Support Specialist at G²S Corporation. With over 5 years of experience in recruiting and human resources, she is dedicated to bringing in top talent and building strong relationships with both candidates, employees, and customers. Her primary functions and responsibilities revolve around screening resumes, sourcing candidates through job sites and job boards, coordinating interviews, relationship building, timekeeping, employer-sponsored retirement savings plans, and payroll.

Cynthia’s passion for people and her commitment to excellence make her an invaluable asset to the G²S team. She takes great pride in assisting both job seekers and employers in achieving their goals. Cynthia’s role is multifaceted, requiring her to balance a variety of tasks and responsibilities, all while maintaining a high level of professionalism and attention to detail.

Whether it’s managing the hiring process from start to finish or ensuring the dynamics are a good fit, Cynthia’s expertise and dedication ensure that G²S Corporation is able to attract and retain top talent. She is a true team player and her contributions to the success of G²S Corporation are immeasurable.

Crystal A. Lozano

Program Manager - Puerto Rico

Mrs. Crystal A. Lozano is our G²S Program Manager-Puerto Rico, collaborating with the Puerto Rico Health Department and the CDC-Dengue Branch. Crystal has worked with G²S for seven years. She attended the University of Puerto Rico-Mayaguez Campus, graduating with a bachelor’s degree in psychology. She also has a master’s degree in Organizational and Industrial Psychology from the University Carlos Albizu- San Juan Campus. Crystal has managed all Puerto Rico health and environmental-related projects and has supervised more than 100 people around the island with multiple backgrounds such as doctors, epidemiologists, data managers, medical records abstractors, biologists, health educators and more.

Crystal took part in the recovery of the island after hurricanes Irma and Maria, and helped put together different teams to continue our mission during the emergencies. Crystal also collaborated on the CDC-MWWR Zika emergency response in 2018, a scientific paper for CDC publication on ZIKA response. Currently Crystal is working with her team on the Emergency Threat for Mother and Babies Surveillance System in Puerto Rico, work that she believes will support the promise of future generations of children on the island of Puerto Rico.

Cody Trevino

Operations Specialist

Cody Trevino serves as the Operations Specialist for G²S Corporation, where he supports accounting and all operational functions companywide. Mr. Trevino developed over 6 years of practical experience while growing up in the Federal contracting environment. He is pursuing an MBA in Finance at the University of the Incarnate Word, where he earned a BA in business administration. Mr. Trevino is continually growing his role in the G²S operations process while cross-training in all aspects of the business.

General Services Administration (GSA) Information Technology Services SINs 54151S & 54151HEAL

GSA Information Technology Services is a long-term contract issued by the U. S. General Services Administration (GSA) to a commercial technology vendor.   

G²S Corporation has been awarded contract 47QTCA19D0029. 

General Services Administration (GSA) Professional Services SINs 541219, 541611, & 541219

GSA Professional Services is a long-term contract issued by the U. S. General Services Administration (GSA) to a commercial vendor.

G²S Corporation has been awarded contract 47QRAA19D00C5.

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