Senior Estimator

Job Summary

We are seeking a Senior Estimator for a direct hire opportunity in Upland, CA or San Marcos CA, supporting complex water and wastewater treatment, heavy civil, industrial infrastructure, and electrical construction projects. This role is ideal for an experienced construction estimating professional who understands the full bid process, from reviewing plans and specifications to preparing accurate material, labor, subcontractor, and supplier cost estimates.

The Senior Estimator will work closely with Project Managers and estimating teams to develop competitive, complete, and well-supported bids. This is a strong opportunity for someone who enjoys technical estimating, detailed takeoffs, collaboration with operations, and contributing to critical infrastructure projects that serve local communities.

This position offers the opportunity to join a stable construction environment with experienced leadership, strong teamwork, and meaningful project work. The right candidate will be valued for accuracy, construction knowledge, relationship-building skills, and the ability to help deliver successful bids for challenging infrastructure projects.

Key Responsibilities

• Assist Project Managers throughout the full bid and estimating process, including plan review, quantity takeoffs, pricing, subcontractor coordination, and final bid preparation.

• Perform detailed electrical takeoffs from project specifications, one-line diagrams, P&IDs, control schematics, MCC and VFD schedules, lighting plans, grounding plans, site plans, network diagrams, and riser diagrams.

• Measure and quantify medium and low voltage distribution switchgear, MCCs, VFDs, soft starters, lighting and power panels, local control panels, vendor control panels, PLCs, RIOs, I/O points, instrumentation, and control wiring.

• Estimate underground duct banks, raceways, process equipment power and control, precast concrete manholes, transformer pads, and related electrical infrastructure.

• Solicit, evaluate, and negotiate pricing from subcontractors and suppliers to ensure accurate, competitive, and complete bid packages.

• Identify costs related to general conditions, special conditions, construction sequencing, productivity factors, phased shutdowns, bypass pumping, confined spaces, and compressed schedules.

Compensation and Benefits

Salary Range: $130,000 to $160,000 per year.

Job Type: Direct Hire.

Location: Upland, CA Or San Marcos, CA

Equal Opportunity Employer / Disabled / Protected Veterans

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For temporary assignments lasting 13 weeks or longer, AppleOne is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

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We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.

Additional Skills

Required Qualifications and Skills

Primary duties and projects include:

• Prepare detailed estimates for water and wastewater treatment, heavy civil, and industrial infrastructure construction projects.

• Perform electrical takeoffs and quantify major electrical systems, controls, instrumentation, and site infrastructure.

• Support bid development, budget estimating, schedule input, subcontractor pricing, and supplier negotiations.

• Collaborate with Project Managers, general contractors, clients, vendors, and internal estimating teams.

Required qualifications and skills:

• Minimum of five years of construction estimating experience in the water/wastewater, heavy civil, industrial facilities, or infrastructure construction industry.

• Strong ability to read and interpret project specifications, electrical drawings, one-line diagrams, P&IDs, control schematics, lighting plans, site plans, network diagrams, and riser diagrams.

• Working knowledge of medium and low voltage distribution systems, MCCs, VFDs, soft starters, panels, PLCs, instrumentation, control wiring, duct banks, raceways, and process equipment power.

• Basic understanding of multiple construction disciplines and the sequence of construction.

• Ability to develop accurate estimates that support project budgets, schedules, and bid strategies.

• Experience identifying general conditions and special conditions costs.

• Proficiency with Microsoft Office, including Outlook, Word, and Excel, along with internet-based research and communication tools.

• Strong communication, negotiation, analytical, and relationship-building skills.

• Ability to develop and maintain relationships with general contractors, clients, subcontractors, and suppliers.

• Detail-oriented approach with the ability to apply productivity factors for complicated projects, confined spaces, phased shutdowns, bypass pumping, and compressed schedules.

Preferred Qualifications

• Design-build and Construction Manager at Risk project experience.

• Experience using McCormick Estimating Software.

• Prior estimating experience with water treatment plants, wastewater treatment plants, pump stations, process facilities, or related municipal infrastructure.

• Senior-level estimating experience supporting complex electrical, instrumentation, and controls scopes.