Pre Construction Designer Jobs in Riverside, CA (NOW HIRING)

Company Overview

Henkels & McCoy West works closely with clients from diverse markets to build enduring partnerships throughout the Western United States. Our team of seasoned professionals designs, builds, manages, and maintains critical and sustainable infrastructure for the power, oil & gas pipeline, gas distribution, and communications industries. Building on a 100-year legacy of performance and service to utility, commercial, industrial, and government clients, H&M West brings together extensive knowledge and innovation to deliver infrastructure construction solutions that meet future energy needs today.

H&M West is a purpose-driven company. Our core values guide our strategy, performance, and culture. We believe in maintaining an environment where team members can make an impact, grow, and thrive. A place where they find meaning and purpose in doing the important work of ensuring communities have the vital energy, light, and communications to prosper. Our culture is inclusive and welcoming. Our teams are empowered with abundant training, tools, and opportunities to follow their curiosity and ambitions. Everyone has an equal chance to advance. Everyone is supported, respected, and challenged to be their best. We’re always looking for talented and dedicated people to join us and love where they work.

Henkels & McCoy West is a proud subsidiary of MasTec (NYSE: MTZ), a Fortune 500 Company ranked by Energy News-Record as one of the leading contractors in the country. H&M West is part of the MasTec Power Delivery segment. We are certified as a minority-controlled company by the National Minority Suppliers Development Council (NMSDC). Our rich diversity of people and ideas makes us a stronger, more innovative organization.

Position Summary:

The Senior Estimator is responsible for developing, preparing, and managing detailed cost estimates and proposals for complex projects in the transmission, substation power sectors. This role provides expert support throughout the bid and pre-construction process, ensuring accuracy, competitiveness, and compliance with client requirements and company standards. The Senior Estimator works cross-functionally with project management, engineering, procurement, and field operations teams to validate scopes of work, identify risk, and create competitive pricing strategies.

• Lead the development of detailed estimates for transmission, substation power distribution projects, including labor, equipment, material, and subcontractor costs.
• Interpret design drawings, technical specifications, and bid documents to define project scope and estimate requirements.
• Conduct quantity take-offs, analyze constructability, and validate design assumptions to ensure realistic project budgets.
• Collaborate with project managers, engineers, procurement, and construction teams to ensure estimates align with project execution strategies.
• Identify, quantify, and assess project risks and opportunities; incorporate mitigation strategies into estimates.
• Prepare and present estimate summaries, bid proposals, and support documentation for executive and client review.
• Maintain a strong understanding of industry pricing trends, labor agreements, productivity benchmarks, and market conditions.
• Support contract negotiations by providing cost analysis and value engineering alternatives.
• Mentor and support junior estimators, providing guidance on industry practices, estimating methods, and company procedures.
• Ensure all estimates comply with corporate standards, client requirements, and applicable safety and quality protocols.

• Bachelor’s degree in Construction Management, Engineering, Business, or related field preferred; equivalent experience considered.
• 7+ years of estimating experience in power utility construction (transmission, substation, t-line).
• Experience with transmission lines, substations, and electrical distribution projects.
• Experience with Engineering, Procurement, and Construction (EPC) projects.
• Experience estimating large $75M+ projects.
• Proficiency with estimating software (e.g., B2W, HeavyBid, Sage, or similar) and MS Excel.
• Excellent analytical, communication, and presentation skills.
• Ability to manage multiple bids under tight deadlines.

Salary Range: $120,000/yr to $180,000/yr (will be dependent upon level of experience)

Benefits: 

Full-time employees are eligible to participate in our benefit plan which includes the following: 

• 401(k) Plan
• Employee Stock Purchase Plan
• Health, Dental, & Vision Insurance
• Voluntary Life Insurance
• Voluntary Short Term & Long-Term Disability
• Paid time off

Henkels & McCoy West, LLC. is an Equal Opportunity Employer of Minorities, Females, Protected Veterans, and Individuals with Disabilities.

• Bachelor’s degree in Construction Management, Engineering, Business, or related field preferred; equivalent experience considered.
• 7+ years of estimating experience in power utility construction (transmission, substation, t-line).
• Experience with transmission lines, substations, and electrical distribution projects.
• Experience with Engineering, Procurement, and Construction (EPC) projects.
• Experience estimating large $75M+ projects.
• Proficiency with estimating software (e.g., B2W, HeavyBid, Sage, or similar) and MS Excel.
• Excellent analytical, communication, and presentation skills.
• Ability to manage multiple bids under tight deadlines.

Salary Range: $120,000/yr to $180,000/yr (will be dependent upon level of experience)

Benefits: 

Full-time employees are eligible to participate in our benefit plan which includes the following: 

• 401(k) Plan
• Employee Stock Purchase Plan
• Health, Dental, & Vision Insurance
• Voluntary Life Insurance
• Voluntary Short Term & Long-Term Disability
• Paid time off

Henkels & McCoy West, LLC. is an Equal Opportunity Employer of Minorities, Females, Protected Veterans, and Individuals with Disabilities.