Senior Mechanical Estimator — EPC Piping & Welding Bids

Energy Resource Consultants, LLC; Texas; On-site; USD 120,000 - 170,000; Full time

Job summary

Energy Resource Consultants, LLC seeks a Senior Mechanical Estimator in Houston, TX to independently develop accurate estimates for piping, welding, equipment setting, and facility work. You will review bid documents, perform detailed takeoffs, evaluate vendor quotes, and coordinate with project teams to ensure buildable, cost-effective proposals.

This role requires ASME/API familiarity and strong Excel skills.

Qualifications

• 5+ years estimating experience in the Midstream Oil & Gas industry.
• Experience estimating pipelines, facilities, and terminals.
• Bachelor’s degree preferred; equivalence accepted.
• Proficiency with ASME/API standards.
• Strong analytical and communication skills.

Responsibilities

• Develop complete and accurate mechanical estimates from drawings, specifications, and bid documents.
• Perform detailed takeoffs for piping, welding, equipment, valves, structural components, and mechanical systems.
• Analyze drawings for constructability issues, scope gaps, and quantity discrepancies.
• Prepare labor build-ups using production rates, crew compositions, and historical data.
• Utilize Supply Chain to solicit, evaluate, and normalize vendor and subcontractor quotes.
• Attend pre-bid meetings and job walks to assess site conditions and risks.
• Identify risks, assumptions, exclusions, and prepare proposal clarifications.
• Coordinate with project managers, engineering, and field teams to validate installation methods and labor assumptions.
• Support value engineering and alternative construction approaches.
• Prepare estimate summaries, cost breakdowns, and pricing sheets for internal review.
• Maintain cost data, unit rates, and historical production information.
• Support conceptual, budgetary, and FEL-level estimates as needed.
• Provide complete estimate logic, quantities, and assumptions during project handoff.
• Supply Project Controls with required cost data for accurate job setup and tracking.
• Manage multiple bids and communicate status updates to leadership.
• Ensure estimate files, calculations, and supporting documents are organized and traceable.

Skills

Mechanical takeoffs

Piping materials & fabrication

Labor estimates

P&IDs & isometrics

Estimation methodologies

Estimating software

Excel advanced

Construction means & methods

ASME/API standards

Constructability analysis

Cost drivers & productivity

Conceptual/budget estimates

WBS & cost codes

Schedule alignment support

Lessons learned application

Education

Bachelor’s degree in Construction Management, Engineering, or related field

Equivalent field experience or 5–10 years in similar estimating

AACEI CEP, PMP, ASPE certifications preferred

Tools

InEight

HeavyBid

Navisworks

Bluebeam

Job description

Energy Resource Consultants, LLC seeks a Senior Mechanical Estimator in Houston, TX to independently develop accurate estimates for piping, welding, equipment setting, and facility work. You will review bid documents, perform detailed takeoffs, evaluate vendor quotes, and coordinate with project teams to ensure buildable, cost-effective proposals.

This role requires ASME/API familiarity and strong Excel skills.