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Sr. Estimator

Job in Grand Junction, Mesa County, Colorado, 81503, USA
Listing for: PER SE GROUP INC
Contract position
Listed on 2026-01-12
Job specializations:
  • Engineering
    Electrical Engineering, Estimator
Salary/Wage Range or Industry Benchmark: 67 USD Hourly USD 67.00 HOUR
Job Description & How to Apply Below

Job Title: Senior Estimator – Electrical & Instrumentation (Oil & Gas)

Pay Rate: $67-$77 a hour

Location: Grand Junction, CO or Midland, TX

Employment Type: Contract-to-hire (6 months contract before direct hire)

Reports To: Vice President of U.S. Construction

Position Summary: The Senior Estimator is responsible for developing accurate, competitive, and comprehensive cost estimates for electrical and instrumentation (E&I) scopes on new construction projects within the oil and gas industry. This role requires deep technical knowledge of E&I systems, hazardous area classifications, and industry standards, along with strong analytical skills and the ability to work independently in a fast-paced environment.

The ideal candidate is a self-starter who embraces technology, including advanced use of Microsoft Office and AI-powered tools, to maximize efficiency and accuracy throughout the estimating process.

Key Responsibilities
  • Prepare detailed cost estimates, take-offs, and bid proposals for electrical and instrumentation scopes on oil and gas construction projects.
  • Analyze project drawings, specifications, and contract documents to identify labor, material, equipment, and subcontract requirements.
  • Demonstrate robust knowledge of hazardous area classifications (e.g., Class I, Division 1 & 2; Zone 0, 1, &
    2) and apply applicable codes and standards (NEC, IEC, API, ISA).
  • Develop labor productivity assumptions and installation strategies specific to oil and gas environments.
  • Collaborate with project management, engineering, procurement, and field leadership to validate scope, execution plans, and cost assumptions.
  • Solicit, evaluate, and compare vendor and subcontractor quotations to ensure competitiveness and compliance with project requirements.
  • Identify project risks and opportunities and incorporate appropriate contingencies into estimates.
  • Maintain organized estimate documentation to support bid reviews, audits, and post-bid analysis.
  • Participate in bid review meetings and provide clear explanations of estimate assumptions, exclusions, and clarifications.
  • Utilize Microsoft Office Suite (Excel, Word, Outlook, PowerPoint) at an advanced level to build estimating models, summaries, and presentations.
  • Leverage AI language models and digital tools to improve estimating efficiency, data analysis, scope reviews, and documentation quality.
  • Support continuous improvement initiatives related to estimating processes, tools, and best practices.
Required Qualifications
  • Minimum of 7–10 years of estimating experience in electrical and instrumentation construction, preferably within the oil and gas industry.
  • Strong understanding of E&I systems, including power distribution, grounding, lighting, control systems, instrumentation, and automation.
  • Demonstrated expertise in hazardous area classifications and construction requirements for oil and gas facilities.
  • Proven ability to work independently, manage multiple estimates simultaneously, and meet tight bid deadlines.
  • Advanced proficiency in Microsoft Office Suite, particularly Excel.
  • Strong analytical, organizational, and attention-to-detail skills.
  • Excellent written and verbal communication skills.
Preferred Qualifications
  • Experience estimating large-scale or complex oil and gas new construction projects.
  • Familiarity with estimating software (e.g., Accubid, Con Est, Trimble, or similar).
  • Working knowledge of AI tools and language models (e.g., ChatGPT or similar) for improving workflow efficiency, document review, and data organization.
  • Field experience in electrical and instrumentation construction.
  • Bachelor’s degree in Engineering, Construction Management, or a related field (or equivalent industry experience).
What We Offer
  • Competitive salary commensurate with experience
  • Comprehensive benefits package (health, dental, vision, 401(k), etc.)
  • Opportunities for professional growth and leadership development
  • A collaborative and forward-thinking work environment that values innovation and efficiency
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