Project Manager / Estimator

Diamond R Industries; Pawnee (OK); On-site; USD 90,000 - 110,000; Full time

Benefits offered by this job

Competitive benefits package

Travel opportunities

Bonus program

Job summary

Diamond R Industries, based in Oklahoma, seeks a Project Manager / Estimator to lead tank construction, piping, and field erection projects nationwide. This dual role covers accurate estimating and full project execution from kickoff to closeout, with regular travel to job sites and strong client engagement.

The ideal candidate has 5+ years in tank/construction, experience managing field crews, and knowledge of API 650/653 standards.

Qualifications

• Minimum of 5 years of experience in tank construction, industrial piping, field erection, or related industrial/mechanical construction.
• Demonstrated experience managing field crews and construction projects.
• Ability and willingness to travel (regional and national project sites).
• Strong understanding of API 650 / API 653 standards, tank fabrication and erection practices, and industrial construction processes.
• Excellent organizational, communication, and problem‑solving skills.
• Valid driver’s license and ability to work in industrial environments.

Responsibilities

• Prepare detailed cost estimates and proposals for shop‑fabricated and field‑erected storage tanks, tank repairs (API 653), piping systems, structural work, and related turnkey projects.
• Review customer drawings, specifications, and bid packages; perform material and labor takeoffs.
• Develop pricing that includes fabrication, field erection, materials, equipment, travel, subcontractors, and contingency while maintaining competitive yet profitable margins.
• Collaborate with engineering, fabrication, and operations teams to refine scopes and identify value‑engineering opportunities.
• Maintain and update historical cost data, vendor pricing, and labor productivity rates.
• Manage multiple projects simultaneously from contract award through closeout, ensuring they are completed on schedule, within budget, and to API and company quality standards.
• Develop and maintain project schedules, budgets, and forecasts; track progress and identify/resolve variances.
• Coordinate shop fabrication, field crews, materials procurement, equipment, and subcontractors.
• Serve as the primary point of contact for clients on assigned projects; manage change orders, RFIs, and documentation.
• Oversee field execution, including coordination with site supervision and crews; ensure safe work practices and compliance with site‑specific and company safety programs.
• Monitor quality control processes and coordinate inspections (including API standards).
• Prepare project status reports, cost updates, and closeout documentation.
• Direct and support field crews performing tank erection, repair, piping, and related work.
• Travel to job sites as required to oversee progress, resolve issues, and maintain client relationships (travel frequency varies by project load).
• Ensure crews have the resources, information, and support needed for efficient and safe execution.

Skills

Tank construction

Industrial piping

Field erection

Crew management

Travel willingness

API standards

Communication

Problem solving

Driver's license

Tools

Estimating software

Microsoft Excel

CAD experience

Budgeting / cost control

Project controls

OSHA training

Job description

Diamond R Industries

Project Manager / Estimator

Location: Based in the Pawnee / Tulsa, Oklahoma area (with regular travel)

Compensation: $100,000 base + bonus (based on performance and project outcomes)

About Diamond R Industries

Diamond R Industries is a rapidly growing, industry-leading manufacturer and full-service provider of specialized above-ground metal storage tanks for the ethanol, asphalt, specialty chemical, bio-diesel, liquid feed, oil & gas, and related industries. Headquartered in Oklahoma, we deliver turnkey solutions that include design, shop and field fabrication, installation, repair, and maintenance of API 650, API 653, API 620, API 12F, AWWA, and UL142 tanks. Our capabilities also encompass industrial piping, structural fabrication, foundations, insulation, and custom fabrication work. We serve customers throughout the United States with a focus on quality, responsiveness, and long-term relationships.

Position Overview

We are seeking an experienced Project Manager / Estimator to support our continued growth. This dual-role position is responsible for preparing accurate, competitive estimates and then managing awarded projects from kickoff through completion. The ideal candidate has hands‑on experience in tank construction, industrial piping, and field erection work, a proven track record of managing crews, and the ability to travel to job sites across the country as needed.

Key Responsibilities

Estimating

• Prepare detailed, accurate cost estimates and proposals for shop‑fabricated and field‑erected storage tanks, tank repairs (API 653), piping systems, structural work, and related turnkey projects.
• Review customer drawings, specifications, and bid packages; perform material and labor takeoffs.
• Develop pricing that includes fabrication, field erection, materials, equipment, travel, subcontractors, and contingency while maintaining competitive yet profitable margins.
• Collaborate with engineering, fabrication, and operations teams to refine scopes and identify value‑engineering opportunities.
• Maintain and update historical cost data, vendor pricing, and labor productivity rates.

Project Management

• Manage multiple projects simultaneously from contract award through closeout, ensuring they are completed on schedule, within budget, and to API and company quality standards.
• Develop and maintain project schedules, budgets, and forecasts; track progress and identify/resolve variances.
• Coordinate shop fabrication, field crews, materials procurement, equipment, and subcontractors.
• Serve as the primary point of contact for clients on assigned projects; manage change orders, RFIs, and documentation.
• Oversee field execution, including coordination with site supervision and crews; ensure safe work practices and compliance with site‑specific and company safety programs.
• Monitor quality control processes and coordinate inspections (including API standards).
• Prepare project status reports, cost updates, and closeout documentation.

Crew & Field Leadership

• Direct and support field crews performing tank erection, repair, piping, and related work.
• Travel to job sites as required to oversee progress, resolve issues, and maintain client relationships (travel frequency varies by project load).
• Ensure crews have the resources, information, and support needed for efficient and safe execution.

Required Qualifications

• Minimum of 5 years of experience in tank construction, industrial piping, field erection, or related industrial/mechanical construction.
• Demonstrated experience managing field crews and construction projects.
• Ability and willingness to travel (regional and national project sites).
• Strong understanding of API 650 / API 653 standards, tank fabrication and erection practices, and industrial construction processes.
• Excellent organizational, communication, and problem‑solving skills.
• Valid driver’s license and ability to work in industrial environments.

Preferred Qualifications

• Experience with estimating software or strong computer skills (Microsoft Office, especially Excel).
• CAD experience (ability to read and interpret fabrication and erection drawings).
• Prior budgeting, cost control, or project controls experience.
• Knowledge of related scopes such as piping, structural steel, foundations, or insulation.
• OSHA safety training or related certifications.

Compensation & Benefits

• Base salary of $100,000 plus performance-based bonus.
• Opportunity to join a growing, family‑owned company with a strong reputation in the specialized tank industry.
• Competitive benefits package (details to be discussed).

Diamond R Industries is an equal opportunity employer.