Sr Estimator Pipelines

Location: Evans, CO/ Fort Collins, CO Job Type: Permanent, Full-time Work Schedule: Onsite About the Opportunity NES Fircroft is a leading global workforce solutions provider specializing in engineering and technical talent across the energy and industrial sectors. We partner with organizations delivering critical projects worldwide, connecting exceptional professionals with opportunities that drive innovation and operational excellence.
Our client, a leading midstream engineering and construction organization, is seeking a Senior Estimator – Pipelines/ Facilities to lead the development of detailed and competitive estimates for midstream pipeline, facility, terminal, and mechanical construction projects. This is a permanent, full-time opportunity based onsite in Evans, CO.
About the Job This is an excellent opportunity for an experienced mechanical estimator with a strong background in midstream oil and gas construction to take ownership of complex estimating activities across pipeline, facility, terminal, and mechanical projects.
The successful candidate will play a key role in developing accurate, competitive, and executable project estimates, bringing together technical expertise, commercial awareness, and an understanding of field construction methods to support successful project delivery.
The Role Reporting to the estimating leadership team, the Senior Estimator will independently develop detailed mechanical and pipeline estimates, from initial bid review through proposal submission and project handover. This individual will serve as the primary technical estimating resource for piping, welding, equipment installation, and facility-related scopes.
Key responsibilities include:

• Develop comprehensive mechanical and pipeline estimates using engineering drawings, specifications, and bid documentation.
• Perform detailed material and labor takeoffs covering piping, welding, equipment, valves, structural components, and associated mechanical systems.
• Interpret P&IDs, piping isometrics, mechanical drawings, and construction specifications to identify scope gaps, quantity discrepancies, and constructability challenges.
• Develop labor build-ups using production rates, crew compositions, craft hours, historical data, and field productivity benchmarks.
• Coordinate with Supply Chain to solicit, evaluate, and normalize vendor and subcontractor quotations.
• Participate in pre-bid meetings and site visits to evaluate project conditions, execution requirements, and potential risks.
• Identify estimating assumptions, exclusions, commercial risks, and scope clarifications for proposal development.
• Collaborate with Project Management, Engineering, and Field Operations to validate construction methodologies, installation approaches, and labor requirements.
• Support value engineering initiatives and alternative construction strategies to improve project competitiveness and execution.
• Prepare detailed estimate summaries, cost breakdowns, pricing schedules, and supporting documentation for internal review.
• Maintain estimating databases, unit rates, historical cost information, and production benchmarks.
• Develop conceptual, budgetary, and FEL-level estimates where required.
• Support project handover by providing clear estimate logic, quantities, assumptions, and cost documentation to execution teams.
• Coordinate with Project Controls to establish appropriate cost data, WBS structures, and cost codes for project setup and tracking.
• Manage multiple bids concurrently, communicate progress to leadership, and maintain organized, traceable estimating records.
• Provide technical guidance and mentorship to junior estimating team members.

Experience & Qualifications

• Minimum 5 years of estimating experience within the Midstream Oil & Gas industry.
• Demonstrated experience estimating pipeline, facility, and terminal construction projects.
• Bachelor's degree in Construction Management, Engineering, or a related discipline preferred. Equivalent industry experience will also be considered.
• Typically 5–10 years of relevant estimating

Technical Expertise

• Strong knowledge of mechanical and piping estimating, including material takeoffs, welding, equipment installation, and structural components.
• Thorough understanding of piping materials, pressure classes, fittings, fabrication practices, and mechanical construction specifications.
• Ability to interpret P&IDs, piping isometrics, mechanical drawings, and project scope documentation.
• Experience developing detailed labor estimates using crew compositions, production rates, and historical productivity data.
• Familiarity with unit-rate, resource-based, and detailed line-item estimating methodologies.
• Proficiency with estimating and takeoff software such as InEight, HeavyBid, Navisworks, Bluebeam, or comparable platforms.
• Advanced Excel capabilities, including formulas, lookups, pivot tables, and cost modeling.
• Knowledge of mechanical construction means and methods, including rigging, equipment setting, hydrotesting, and commissioning.
• Familiarity with applicable ASME, API, and mechanical construction standards.
• Understanding of indirect costs, equipment rates, consumables, labor burdens, and project cost structures.
• Ability to develop conceptual and budgetary estimates with incomplete engineering information.
• Understanding of WBS structures, cost codes, and cost organization for project controls.
• Ability to assess installation durations, support schedule alignment, and incorporate field productivity data into estimates.

Additional Experience Considered an Advantage

• Experience with JD Edwards (JDE), particularly cost codes and project cost structures.
• Familiarity with Power BI and estimating performance metrics.
• Exposure to Primavera P6 or Microsoft Project.
• Experience participating in client-facing technical reviews.
• Experience developing manpower loading curves and construction sequencing plans.
• Previous field experience in mechanical, piping, or welding disciplines.
• Broader project management or construction experience within Oil & Gas and Midstream infrastructure.

Why Work Here?

• Meaningful Industry Projects: Contribute to the development and execution of critical midstream oil and gas infrastructure, including pipeline, facility, and terminal projects.
• Technical Ownership: Take a leading role in estimating activities, with the opportunity to influence project strategy, commercial competitiveness, and execution planning.
• Cross-Functional Collaboration: Work closely with engineering, supply chain, project management, and field operations teams throughout the project lifecycle.
• Professional Development: Further develop your technical and commercial expertise while mentoring junior estimators and contributing to the evolution of estimating practices.
• Long-Term Opportunity: Join an organization supporting essential energy infrastructure and play a meaningful part in securing and delivering successful projects.

This is an excellent opportunity to become part of a fast-growing engineering and construction company. The successful applicant will receive a competitive compensation package including base salary, annual bonus opportunity, medical benefits, life insurance, PTO, holidays, and more. Relocation within the US is available. No sponsorships or work permits available, candidates must have authorization to work in the US without ongoing sponsorship. If interested in learning more about this opportunity, please apply directly or contact Mishu Ventura at NES Fircroft for a confidential discussion.
With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.