About us

Who we are

D-Line Constructors, Inc. is a quality-driven, relationship-minded general engineering contractor.

D-Line is certified as a VSBE with the Port of Oakland and an SLBE with the City of Oakland. With $30 million in bonding capacity, D-Line is well positioned to bring quality contributions to a wide range of projects.

D-Line offers the quality, reliability and sophistication necessary to deliver projects in today’s ever changing contracting environment.

Core values


D-Line exists to build lasting relationships.


To be the most successful graduate of the SBA’s 8(a) business development program by the year 2020.


Candor. We do not get a second chance to make a first impression. The foundation of every project is honesty and integrity.

Empowerment. We do work that matters – vision and collaboration are what make our work product remarkable.

Indispensable. Our forward thinking attitude, adaptation to change, continuing education and the constant push for improvement set us apart.

Safety. Simply put, safety is our way of life – our culture. We are committed to creating an Injury Free Environment (IFE) at the workplace and to helping our coworkers, clients, and construction partners cultivate healthy lifestyles.

Vivid descriptions

  • MULTI-DISCIPLINARY approach to doing business.
  • Recognized for CREATIVE problem solving.
  • Use of ENGAGEMENT to increase overall value.
  • Committed to delivering QUALITY PROJECTS.
  • Understanding that behind GREAT COMPANIES are GREAT EMPLOYEES.


Josue “Tony” Prada / President

Josue ”Tony“ Prada has been President since D-Line Constructors, Inc.’s inception. For the last 20 years, Tony has held a variety of positions throughout the construction industry, as well as financial advisory roles, both domestically and abroad.

Tony has experience working on public and private projects for both general and sub-contractors in the greater San Francisco Bay Area. He has been involved in estimating over $200 million in public works projects, and has managed more than $25 million in projects that include: airports, mass excavations, pump stations, buildings, pipelines, concrete structures, and demolition.

Tony has held financial advisory roles in Los Angeles, California and São Paulo, Brazil. He has also done turnaround consulting for distressed companies and extensive financial analysis for corporate mergers and acquisitions.

Tony holds an MBA in finance from the University of Texas at Austin and completed masters level coursework in the international program of management at Fundação Getulio Vargas in São Paulo, Brazil. He also holds a Bachelor’s Degree in Business Administration in marketing from the University of Phoenix and attended Bellarmine College Preparatory in San Jose, California.

Matt Certa / Vice President

Matt Certa brings to D-Line more than 20 years of construction industry experience. A few years after starting as a laborer, Matt left craft work and accepted the challenges of leadership positions including: Purchasing Agent, Safety Manager, Estimator, Project Manager, and Director of Estimating.

As the Safety Manager for a large concrete contractor, Matt learned early in his career that the fundamentals of Activity Hazard Analysis, Pre-Task Planning, and effective communication are the most valuable tools in attaining a zero incident working environment.

As a Project Manager, Matt was fortunate to play an integral role in such marquee Bay Area projects as UCSF Mission Bay Campus, Mills Peninsula Hospital Replacement, California Academy of Sciences, and Stanford Graduate School of Business. His technical expertise includes the disciplines of concrete construction (structural and site), shotcrete, demolition, earthwork and paving.

Matt regularly participates in continuing education opportunities, and is specifically interested in the topics of Lean Construction, Integrated Project Delivery, Building Information Modeling, and Enterprise Risk Management. He is a LEED Accredited Professional (LEED AP BD+C), First Aid & CPR trained, maintains a Class-A Commercial Drivers License, and is OSHA-30 certified. Matt attended San Jose State University and Bellarmine College Preparatory in San Jose, California.


499 Embarcadero
Post 3 Box 6
Oakland, CA 94606

510.251.6400 p
510.251.6401 f

Contractors State License Board:

License # 944284
DIR # 1000007891