Senior Estimator

Job Overview:

APTIM is seeking an experienced Senior Construction Estimator to join our growing team. This role is responsible for developing accurate and competitive cost estimates for a wide range of construction and environmental projects, with a strong emphasis on federal government clients, including the Department of Defense (DoD), Department of Energy (DOE), FEMA, and other state and local agencies.

The ideal candidate is a strategic estimator with extensive experience preparing conceptual, parametric, and detailed bottom-up estimates throughout the project lifecycle. This individual will serve as a technical leader, collaborating with Business Development, Engineering, Procurement, Construction, and Proposal teams to develop winning pricing strategies and high-quality proposals.

Key Responsibilities/Accountabilities:

• Lead the development of construction cost estimates from conceptual planning through detailed design and final proposal submission.

• Prepare accurate estimates using limited or evolving project information by applying industry expertise, historical data, and collaboration with subject matter experts.

• Develop and review conceptual, ROM (Rough Order of Magnitude), parametric, and detailed bottom-up estimates for a variety of project types.

• Lead major proposal estimating efforts, coordinating cross-functional teams to deliver complete and competitive pricing packages.

• Solicit, evaluate, and incorporate subcontractor and vendor quotations into project estimates.

• Perform constructability reviews and identify project risks, assumptions, and cost drivers to improve estimate accuracy.

• Develop pricing strategies, labor billing rate schedules, indirect cost allocations, and estimate documentation for multiple contract types.

• Review estimates prepared by other team members and provide technical guidance and mentorship to promote estimating best practices.

• Support proposal development activities by collaborating with Business Development and Capture teams to develop competitive solutions.

• Contribute to the continuous improvement of estimating processes, tools, databases, cost assemblies, and standardized estimating models.

• Present estimate assumptions, methodologies, risks, and recommendations to senior leadership and project stakeholders.

• Manage multiple estimates simultaneously while meeting aggressive proposal schedules and maintaining a high level of accuracy.

Basic Qualifications:

• Bachelor's degree in Construction Management, Engineering, Cost Engineering, Quantity Surveying, or a related discipline; equivalent industry experience will also be considered.

• 5-10 years of construction and/or environmental industry experience, preferably supporting federal government projects.

• 5-7 years of estimating and preconstruction experience.

• Demonstrated experience supporting projects for DoD, DOE, FEMA, USACE, GSA, or other federal, state, or local government agencies.

• Strong experience developing detailed bottom-up estimates as well as conceptual, ROM, and parametric estimates.

• Proficiency with estimating software such as InEight, Sage Estimating (Timberline), RSMeans, or similar industry platforms.

• Advanced Microsoft Excel skills, including complex formulas, cost models, and data analysis.

• Working knowledge of contracts, subcontracts, scheduling, procurement, and change order management.

• Strong analytical, organizational, and problem-solving skills with exceptional attention to detail.

• Excellent written, verbal, and presentation skills.

• Ability to prioritize multiple deadlines and perform effectively in a fast-paced proposal environment.

• Proven ability to collaborate with multidisciplinary teams and influence stakeholders across all levels of the organization.

Preferred Qualifications

• Certified Professional Estimator (CPE), Certified Cost Professional (CCP), or equivalent professional certification.

• Familiarity with federal acquisition regulations (FAR/DFARS) and government procurement processes.

• Experience developing estimating databases, assemblies, cost models, and standardized estimating procedures.

• Experience supporting large, complex, multi-discipline proposal efforts exceeding $25 million in construction value.

About APTIM

APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living. A leading professional solutions firm, we specialize in environmental, sustainability, resilience, and infrastructure solutions. Our team of experts provide these integrated solutions for forward-thinking government agencies, commercial and industrial clients, and energy customers. Together, we create sustainable and resilient communities for all.

What you can expect from APTIM:

• Work that is worthy of your time and talent

• Respect and flexibility to live a full life at work and at home

• Dogged determination to deliver for our clients and communities

• A voice in making our company better

• Investment into your personal and professional development

As of the date of this posting, a good faith estimate of the current pay range for this position is $110,000 - $145,000 Per Year. Compensation depends on several factors including: experience, education, key skills, geographic location of the position, client requirements, external market competitiveness, and internal equity among other employees within APTIM.

Employee Benefits

APTIM Federal Services, LLC is committed to providing an extensive range of benefits that protect and promote the health and financial well-being of our employees and their families through the APTIM Benefits Marketplace .

• Medical, vision, and dental insurance: Through the marketplace, our employees can choose benefits from five metallic levels and several carriers to find the right benefits that work for them in their location.

• Company paid and optional Life insurance

• Short-term and long-term disability insurance

• Accident, Critical Illness, and Hospital Indemnity coverage

• Paid holidays, vacation, and sick leave (eligibility based on company policy and applicable law)

• 401(k) APTIM offers three 401k plans through the Aon Pooled Employer Plan (PEP). The specific plan you are eligible for depends on the business unit you are in. The details of the largest plan are found here:

• APTIM 401(k) Guide (

• APTIM - Helpful Documents

Watch our video:

About APTIM - In Pursuit of Better

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