About ISI Professional Services: ISI Professional Services provides mission-critical expertise across a wide range of functional and operational areas. ISI brings over 30 years of experience providing tailored workforce and project management solutions across the U.S. we specialize in Program and Project Management, Construction Management, Real Estate Advisory, Acquisition Management, Logistics, Leadership Development, and more. At ISI, our people are the heart of our success. We prioritize engagement, professional growth, and a strong culture to succeed together. As a Service-Disabled Veteran Owned Small Business (SDVOSB), we are proud to support Veterans by creating opportunities for them to succeed. Join ISI and be part of a team making a meaningful impact—delivering excellence and exceeding expectations every step of the way. We offer a comprehensive and competitive benefits package. The salary range represents a general guideline as ISI considers several factors when determining compensation to include but not limited to the candidate’s experience, education, skills, and market location of the position. Position Summary: ISI Professional Services is seeking a Project Engineer with strong construction cost estimating expertise to support the Washington Headquarters Services (WHS), Facilities Services Directorate (FSD), Alterations Working Group (AWG). This role is key to delivering accurate and defensible cost estimates, supporting capital repair and construction projects, and ensuring compliance with DoD and WHS requirements. The position involves supporting Government project managers by preparing estimates, conducting field evaluations, and contributing to planning and oversight for multiple small-scale construction efforts (typically under $500,000). Candidates must be comfortable performing independent cost analysis and supporting project budgeting from concept through execution. Essential Job Functions Project Planning & Programming Support Lead development of detailed construction cost estimates , including ROM, budgetary, and Independent Government Cost Estimates (IGCEs), using RSMeans or equivalent tools. Conduct site visits and field validations to inform accurate estimating and cost scoping. Assist in preparing draft scopes of work, unit takeoffs, and preliminary schedules to support planning, design, and acquisition packages. Analyze contractor change order proposals and provide cost-based recommendations to the Government. Participate in the preparation and review of Government acquisition strategies, pre-bid meetings, and milestone reviews. Construction Management Support Support construction contract administration, including review of pricing in submittals, Requests for Equitable Adjustments (REAs), and pay applications. Develop construction schedules and monitor progress using Primavera P6 or Microsoft Project. Maintain organized files and cost documentation to support audit-readiness and transparency. Track and report on cost-related project risks, scope changes, and financial impacts in coordination with Project Managers. Assist with project closeout and cost reconciliation activities. Required Qualifications: Bachelor’s degree in Engineering, Architecture, or Construction Management; OR 4+ years of relevant technical experience in construction, including formal estimating experience , and: Licensed Master Craftsman, or Licensed Journeyman, or Active General Contractor license. Proficient in estimating tools and cost databases (e.g., RSMeans). Strong Excel skills and ability to prepare professional reports and cost analysis packages. Excellent communication skills and ability to defend and explain cost assumptions to senior stakeholders. Preferred Qualifications: Demonstrated experience preparing construction cost estimates for federal, DoD, or WHS projects. Familiarity with RSMeans and DoD/UFC cost estimation standards. Physical Requirements: This job operates in a professional office environment. The physical demands described here are representative of those that an employee must meet to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions. Flexibility related to work hours as project demands arise. Occasionally required to move 5 – 15 pounds. Must remain in a stationary computer position for extended periods. Must be able to walk and stand for extended periods. Work Setting/Environment/Travel Requirements: Monday through Friday, Normal business hours 8:00 am – 5:00 pm To view ISI Professional Services' Equal Employment Opportunity (EEO) statement, please visit: https://www.isiwdc.com/careers/eeo -policy-statement/