Charistech Engineers & Consultants, LLC is a small disadvantaged business composed of engineers and staff that are dedicated to improving the quality of your project through a rigorous systems engineering approach.
Dr. Jennifer Mariani is President and Chief Executive Officer of CharisTech Engineers and Consultants, LLC. She has over 30 years of combined experience in engineering, management, and R&D. She has contributed to several disciplines in engineering including systems engineering and integration, training, quality management and control, and documentation management. After leaving her post-doctoral work at NASA Ames Research Center and Lawrence Livermore Laboratory, she worked for several Bay Area companies where she acquired direct experience in systems engineering approach to designing and managing complex systems, and designing/delivering training.
Jennifer has a PhD in Mechanical Engineering from UC Davis, MS in Mechanical Engineering at University of Michigan, Ann Arbor and BS in Engineering at California State University, Northridge.
Principal Program Director
Mr. Walter Stamirowski is a seasoned electrical systems executive with several decades of demonstrated hands-on experience in engineering consulting, construction management, operations and executive management in the rail transit industry including Heavy Rail (HRT), Light Rail (LRT), Class1 railroad, and DMU transit projects. He is skilled in managing multi-disciplinary teams and performing field construction management, systems design oversight, testing, safety certification, rail activation and commissioning, as well as experience in interacting with governmental and transit agency personnel and community leaders. Areas of expertise include Program and Project Management, Systems Design Integration, Requirements and Interface Management, Project Controls including Cost Estimating and Scheduling, QA/QC, and Safety Certification processes. Walter has extensive on-site field experience managing installation of traction power systems, train control, signaling and communications systems as well as industrial power distribution and control systems in power plants, chemical process and water facilities.
He has guest-lectured on electrical systems construction at the University of California Berkeley and is passionate about sharing his experience with younger engineers and emerging small business enterprise owners.
Ms. Kayte Mariani serves as Area Manager Northern California. Before joining CharisTech, Kayte Mariani was Teledyne ETM’s Vice-President of Engineering and Program Management. She was responsible for the planning, direction and control of product development and engineering activities and supervises several teams of engineers and program managers. In the past, she has served as: Director of Microwave Power Projects; Director of Project Engineering, Integration and Test; Director of Programs; Director of Marketing; and Product Marketing Manager. Prior to joining ETM in 1998, Kayte was with Litton’s Electron Devices Division where she worked both in Sales and in Engineering.
Kayte holds a BS in Mechanical Engineering from Santa Clara University.
Gabriela Esquibel / Marketing Specialist and Office Manager
Ms. Gabby Esquibel supports Charistech Engineers & Consultants as the Marketing and Office Manager, where she leads marketing initiatives, manages the company website, and oversees daily administrative operations. She holds an Associate Degree in Business and is currently working towards a degree in Healthcare Administration and Marketing
from Arizona State University. Currently, Gabby brings a unique blend of business, and marketing knowledge to her role. Her strategic approach to communication and brand growth helps Charistech strengthen its presence and build meaningful connections within the transportation and engineering sectors. Gabby is passionate about organization, clear messaging, and driving innovation to support the company’s continued success and expansion.
Ms. Stacey Mello brings over three decades of administrative and project support experience, with a strong background in document control, quality management, and office administration. Her career has spanned roles in engineering and consulting environments, supporting high-profile projects and ensuring compliance with rigorous standards. Prior to joining Charistech, she served as an Administrative & Project Assistant, where she performed 508 Accessibility Compliance audits, managed extensive document control for large-scale projects, and maintained Quality Management Systems. She also coordinated the execution of contracts and subagreements, supported Accounts Payable and Receivable Departments, and provided tier-one Information Technology support.
Ms. Bartlett has 40 years of extensive work in program and project administration, including development and preparation of agreements/contracts/MOU’s/MOA’s; development of policies and procedures; contract compliance and tracking; document control; general accounting and reconciliation; review and compliance verification of Disadvantage Business Enterprise requirements; preparation of reports; writing meeting minutes; staff supervision, and all aspects of professional administrative support. She has completed the Caltrans/California LTAP Center Labor Compliance Training. She is highly proficient with Microsoft Excel, Word and Power Point and has working knowledge of Access and Outlook. She has the unique skill of using shorthand to take dictation and meeting minutes.
Charistech Engineers & consultants 