About DPI

Page updated on September 5, 2025 at 3:14 PM
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Welcome to the Department of Project Implementation

The Department of Project Implementation, often referred to as DPI, is a team of project managers, construction inspectors, and project controls support staff responsible for the delivery of the City’s portfolio of capital infrastructure projects.  Our team includes licensed engineers, landscape architects, project management professionals, and certified construction managers who have the technical background and expertise to lead the implementation of projects involving City roadways, transit infrastructure, parks, stormwater, sanitary sewer, fiber optic, environmental mitigation, and historic facilities.

As the City’s project management organization, we lead the City’s effort to promote project management excellence in delivery of all capital projects.  We are committed to being sound stewards of the public’s trust.

Please contact us if you have any questions about DPI’s portfolio of projects.  We value your input and strive for continuous improvement in our service to the City’s residents, businesses, and visitors.

 

Mission Statement

To provide efficient and effective capital infrastructure project management services that advance the City’s dedication to sustainability, excellence, fiscal responsibility, and a high quality of life.​

 

Department Leadership

Daphne Kott Headshot (2022)

 

Daphne Kott, PE, CCM, LEED BC+D

Interim Director
703.746.4055
daphne.kott@alexandriava.gov

Daphne Kott is the Project Director for the Department of Project Implementation. She came to the City in 2008, after serving as a design engineer and project manager in the private sector for several years. Daphne serves as a portfolio manager for the City’s traffic, transit, and transportation planning capital improvement projects. She holds a bachelor’s degree in Civil Engineering. Kott also holds Professional Engineer, Certified Construction Manager, and LEED Building Design and Construction credentials.                                                                                                                                                                                                                      

 

Headshot of Lisa Robrahn (2022)

 

Lisa Robrahn

Assistant Director, Project Controls
703.746.4047
lisa.robrahn@alexandriava.gov

Lisa Robrahn is the Assistant Director of Project Controls for the Department of Project Implementation.  She has been with the city since 2012 and worked in the areas of finance, budget, and grants management.   She holds a bachelor’s degree in Management. and supervises the Project Controls team, providing oversight for DPI’s budget, finance, human resources, and information technology internal operations.   

Headshot of Tafesse Gyes (2022)

 

Tafesse Gyes

Construction Operations Manager
703.746.4051
tafesse.gyes@alexandriava.gov

Tafesse Gyes is the Construction Operations Manager for the Department of Project Implementation. He has been with the City of Alexandria since April 2006, during which time he managed the design and construction of several CIP projects. Gyes has worked as Construction Inspector, Project Manager, Construction Division Chief, and Portfolio Manager. He holds a bachelor’s degree in Civil Engineering and is a licensed Professional Engineer in the states of Virginia and Maryland. He is also a Certified Construction Manager.                                                                                                                                                                                            

 

Headshot of Matt Landes (2022)

 

Matthew Landes, PLA, CCM, ISA

Portfolio Manager
703.746.4122
matthew.landes@alexandriava.gov

Matthew Landes is a Portfolio Manager in the Department of Project Implementation.  He is a Licensed Landscape Architect, Certified Construction Manager, and Certified Arborist.  Landes started with the City in 2015 as a Principal Planner and Landscape Architect after practicing in the private sector with a special focus on Green Infrastructure, Low Impact Development strategies, and secure site design. He currently serves as the City's Waterfront Implementation Program Manager, Waterfront Flood Mitigation Project Manager, and is the Portfolio Manager for Department of Recreation, Parks and Cultural Activities and Office of Historic Alexandria projects.

 

Headshot of Dan Medina (2022)

 

Dan Medina, PhD, PE

Stormwater Program Manager, Portfolio Manager
703.746.4160
daniel.medina@alexandriava.gov

Dan Medina is the Stormwater Program Manager and a Portfolio Manager in the Department of Project Implementation. He leads the flood mitigation activities of the Flood Action Alexandria program. Medina joined the City staff in 2021 after 30 years of engineering consulting in the private sector in a wide array of water resources areas, especially in urban water issues including flood risk management. He obtained his Civil Engineering degree from Universidad de los Andes, Bogotá, Colombia and obtained a PhD from Cornell University.                                                                                                                                                                                         

 

 

 

Contact Us

2331 Mill Road, Suite 302
Alexandria, VA 22314

Phone: 703.746.4045

Office Hours: Monday - Friday, 8 a.m. - 5 p.m., except City holidays