Senior Estimator

Subsidiary: Sully Miller Holding Co.


United Rock Products is one of the companies that operates within Sully-Miller Contracting Co., the Colas USA subsidiary that operates throughout Southern California. We are part of Sully-Miller Companies consisting of Sully-Miller Contracting Co., Blue Diamond Materials and United Rock Products. Each company supports the other. United Rock provides the aggregate, Blue Diamond Materials provides the hot and warm mix asphalt manufacturing, and Sully-Miller Contracting executes the projects. Mining of construction aggregates at United Rock Products in the San Gabriel Valley has taken place since 1916. Our top-rated 300-acre site is located in Irwindale, California, just 25 miles east of Los Angeles. Virgin aggregate material is processed into sand and gravel through cutting-edge crushing and screening operations. To learn more about United Rock Products visit

Throughout Colas USA, we provide competitive pay, outstanding benefits, career advancement opportunities, professional education, and extensive training for every employee. We pride ourselves on upholding the highest standards of safety, environmental conservation, and ethical conduct as we strive to grow our infrastructure products and services through empowering and developing our people, fostering innovation, utilizing new technology, and maximizing vertical integration at all levels of the company’s value chain. To learn more about the Colas USA Family of Companies, please visit

United Rock Products, and the rest of the Colas USA Family of Companies, is part of the Colas Group, the worldwide leader in transportation infrastructure construction and maintenance. For information on our international network visit


$125,000- $165,000


Supervises the completion of responses to calls for tenders within his/her scope and monitors customer relations. Guarantees the quality of the studies and the conformity of the response files to calls for tenders. 

Main Responsibilities

  • Monitors current and future projects

  • Participates in the targeting and selection of calls for tenders with the Operational Unit Manager

  • Schedules studies according to the establishment's priorities

  • Coordinates the successful execution of the studies with the employees concerned

  • Directs the technical and financial optimizations of the project, the offer strategy and the risks and opportunities

  • Validates and ensures the editorial quality of the technical files with the competent departments of the territory

  • Controls the monitoring of the file until signing of the contract: technical and financial negotiations, dunning, etc.

  • Ensures or supervises the signing of the successful files to the Operations

  • Ensures a sales relationship with customers, partners and suppliers

  • Promotes relations with support services (technical, legal, insurance, etc.) and Operations upstream, during and downstream of the job to capitalise on feedback.

  • Manages a Design Office team


  • Typically requires a bachelor’s degree and at least 3-5 years of experience

  • With a significant experience in the Studies or Operation/Projects sector

Colas Inc. and its subsidiaries are an Equal Opportunity Employer. For details on the specifics of this commitment, please click here to view the EEO document.  If you are an individual with a disability and require a reasonable accommodation to:

  • to meet the requirements of the role in which you are applying
  • complete any part of the application process
  • access or use the online application process and need an alternative method for applying

Please contact Colas Inc. at 973-290-9082 or send an email to

Nearest Major Market: Orange County
Nearest Secondary Market: Los Angeles