Management Philosophy
CJ Builders experienced project personnel, analytical tools, and our application of best practices based on real-world experiences are just some of the ways we distinguish ourselves. We maximize clients' resources by efficiently procuring labor, materials and equipment. Our systems and proven processes ensure the cost-effective coordination of planning, design, estimating, contracting and construction.
In addition to program and project management, we manage construction, design, procurement, logistics, start-up and commissioning. The results are better-managed projects, a reduction in unnecessary expenditures, shorter schedules and marked improvement in quality and safety performance.
CJ Builders prides itself as a company that gets the job done using as few subcontracting services possible. From Demolition to Final finishing details, CJ Builders take great pride in delivering a product that incorporates your wishes into sound design and construction.
Our People
CJ Builders President, Victor Contreras; Vice President, Antonio Jelú and Senior Project Engineer, Fernando Benitez have, over 75 years of combined experience in the Construction Industry of Puerto Rico. This team represents three generations of Experience, Sound Management and Innovation.
PRINCIPALS
Victor Contreras Pérez, BSME
President
Mr. Contreras began his career as a Manufacturing and Maintenance Engineer within the pharmaceutical industry, later moving on to become Vice President and Project Manager of F&S Construction Corp.
In 1995 Contreras joined Construcciones Contreras, S.E. becoming Partner and General Manager where he oversaw an average of $14 million in billing annually.
Presently Mr. Contreras continues in the Puerto Rican construction industry as founder and President of CJ Builders Corp. and is deeply involved in all aspects of project engineering as well as managing the company.
Antonio Jelú P.E., P.L.S.
Vice President
Antonio Jelú, launched his career in construction engineering with Construcciones Contreras, S.E. in 1996 where he ascended from Project Engineer to Project Manager.
In the year 2003, Mr. Jelú co-founded CJ Builders Corp with Contreras earning the title of vice president. Jelú manages the construction operations of each project, including Cost Control, scheduling, quality control and warranty service.
Mr. Jelú holds a B.S. in Engineering, Land Surveying and Topography from the University of Puerto Rico, Mayaguez campus.
Fernando Benitez Van Rhyn, P.E.
Senior Project Engineer
Mr. Benitez has been with CJ Builders since its inception in 2003. He brings over 45 years of construction engineering experience to the firm. He oversees CJB’s subcontractors, material suppliers inspectors and foremen.
The list of construction projects that Mr. Benitez has worked on is too long to mention here. Suffice it to say that he has helped build over 1,500 residential units throughout Puerto Rico.
Additionally, Benitez has considerable experience in the following:
- Earthworks
- Storm & Sanitary Systems
- Water Distribution
- Street Work
- Housing,
- Industrial and Institutional construction including:
- - Laboratories
- - Estimating
- - Project Planning and Control
Benitez holds a B.S. in Civil Engineering from the University of Puerto Rico and is a member of The College of Engineering & Surveyors, PR.
ADMINISTRATIVE PERSONNEL
Barbara Martínez Ramos, 
CPA
Controller
Ms Martínez has over 15 years experience as an accounting professional. She supervises the complete accounting cycle for CJ Builders including, project billings, insurance policies, management of employee pension plans and governmental report compliance.
She is a graduate of The University of Puerto Rico (Rio Piedras Campus) with a B.B.A. Major in Accounting.
Support Staff
(left to right standing)
Millie Santiago, Lisandra Carrillo, Luz Enid Machín, Ivette Alomar, Amarilys Reyes (seated)
PROJECT ENGINEERS
Brenda Dávila Rodríguez
Project Engineer
Ms Dávila has worked as Project Engineer, first with Construcciones Contreras and now with CJ Builders for over 7 years. She supervises subcontracting suppliers and services and manages project scheduling for the firm's construction projects.
Ms Dávila is a graduate of The University of Puerto Rico (Mayaguez Campus) with Bachelor degrees in Land Surveying and Civil Engineering
Luis Ayala
Project Manager
Mr. Ayala has 8 years of experience in construction engineering and has been with CJ Builders since the firm’s inception in 2003. Ayala supervises and coordinates CJB’s subcontractors, material suppliers and foremen. He also serves in the capacity as Field Representative.
Ayala has a B.S. in Civil Engineering from the University of Puerto Rico, Mayaguez campus, where he graduated Cum Laude.
PROJECT FOREMEN
Geraldo Ortiz Colón 
Concrete Foreman
Mr. Ortiz has over 25 years of experience in the construction industry in Puerto Rico. His responsibilities include; supervising and coordinating all aspects of a project’s construction works, directing field personnel, and acquisition of materials and equipment.
Ortiz is a graduate of Rafael Lopez Landrón High School in Guayama, Puerto Rico and has completed OSHA Seminars for Coaching, Safety Rules and Regulations.
Victor Collazo
Finishing Foreman
Mr. Collazo has over 12 years of experience in the construction industry in Puerto Rico. His responsibilities include supervision and coordination of concrete works and field personnel.
Francisco Cotto
Concrete Foreman
Mr. Cotto has over 20 years of experience in the construction industry in Puerto Rico. His responsibilities include supervision and coordination of concrete works and field personnel.
He is currently pursuing a B.S. in Civil Engineering with the Universidad Politécnica in San Juan, Puerto Rico.
Gilberto Ortiz Soto
Finishing Foreman
Mr. Ortiz has over 15 years of experience in the Puerto Rican construction Industry. He started with CJ Builders as Finishing Foreman in 2004.
Among his duties, Mr. Ortiz acts as Shop Coordinator, supervisor of concrete finishing, and project preparation for inspection.
His on-going education includes studies in the fields of aviation mechanics and electrical engineering at the Interamericana University (Rio Piedras Campus)
PROJECT SUPPORT
Marián Matos Rivera
Administrative Assistant / Construction
Ms Matos has worked with CJ Builders since it¹s inauguration, 4.5 years ago. She performs construction-related administrative and secretarial duties for the firm.
Ms Matos hold a degree in Bachelor of Science from The University of Puerto Rico (Carolina campus) where she graduated Magna Cum-Laude.