Senior Cost Estimator – Rail & Transit

Consertus is a global capital program management and advisory firm that combines deep human expertise with advanced digital tools to deliver smarter, faster, and more sustainable outcomes. Headquartered in Miami, Florida, and supported by a team of more than 1,000 professionals worldwide, we help clients plan, execute, and optimize large-scale capital programs.

Our integrated services span digital, advisory, and delivery, empowering organizations to navigate complexity, manage risk, and achieve strategic goals across sectors including aviation, transportation, transit, water, healthcare, energy, education, government, commercial, life sciences, and technology.

At Consertus, we celebrate individual strengths, foster strong relationships, and promote flexibility in how and where we work. Join us to grow your career, develop your skills, and make a lasting impact as we transform how the world is built.

Discover how Consertus is driving transformative change for our clients, our people, and the communities we serve at  .About This Role Consertus is seeking an experienced Senior Cost Estimator – Rail & Transit to support active Los Angeles Metro and other major transportation infrastructure projects in Southern California. This role will be responsible for developing, reviewing, validating, and reconciling construction cost estimates throughout the project lifecycle, from early planning and conceptual design through final construction documents and procurement.

The Senior Cost Estimator will support complex rail, transit, heavy civil, station, roadway, utility, and related infrastructure scopes , partnering closely with project management, engineering, construction, procurement, and project controls teams to provide reliable cost information and support informed project decisions.

The ideal candidate brings significant public infrastructure estimating experience and a strong understanding of Design-Build, CMGC, CMAR, and other Alternative Delivery methods .

Key Responsibilities Develop comprehensive construction cost estimates from conceptual and preliminary design through final construction documents .Prepare estimates at varying levels of design maturity, including conceptual, schematic, design development, engineer’s estimates, independent cost estimates, and preconstruction estimates.

Perform detailed quantity takeoffs from construction drawings, specifications, design documents, and supporting technical information.

Develop and maintain labor, equipment, material, subcontractor, and unit-cost assumptions.

Research and maintain current unit pricing, market conditions, escalation factors, productivity rates, and historical cost data .Prepare estimates for major rail, transit, heavy civil, roadway, utility, station, systems, and transportation infrastructure projects .Develop estimates in alignment with project Work Breakdown Structures (WBS), bid packages, cost codes, and funding requirements .Prepare and maintain detailed Basis of Estimate (BOE) documentation clearly identifying scope, assumptions, exclusions, methodology, quantities, pricing sources, escalation, contingency, and estimate risk.

Evaluate design development and identify potential cost impacts associated with changes in scope, quantities, construction methods, phasing, access, logistics, and schedule.

Perform estimate reconciliations between design phases, independent estimates, contractor estimates, and other project cost submissions.

Review and evaluate contractor, consultant, and third-party cost estimates for completeness, reasonableness, accuracy, and alignment with project scope.

Support change-order estimating, independent cost estimates, scope change evaluations, and negotiation support .Assist project teams with cost…