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Jobs in Fairfax, United States
11 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
1–11 of 11 jobs
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Clean Air Act Engineer
3 weeks agoERG · Fairfax, Virginia, United States +3
RemoteFull-time$90K – $120K a yearEngineeringPerform, review, and evaluate air dispersion modeling analyses using tools such as AERSCREEN, AERMOD, including:; Performing modeling applicability determinations consistent with federal, state, and local guidance; Identifying representative meteorological data; Establishing…
Municipal Senior Water/Wastewater Engineer
6 weeks agoERG · Fairfax, Virginia, United States +3
RemoteFull-timeSenior$150K – $185K a yearEngineeringSupervise and manage staff providing technical assistance to small, underserved water and wastewater utilities nationwide Support these utilities in securing funding and in designing, constructing, and maintaining sustainable, resilient water infrastructure that delivers safe,…
ERG · Fairfax, Virginia, United States +3
RemoteFull-timeEntry level$58K – $70K a yearData & AIReview workplace injury, illness, and fatality records and apply standardized case‑classification codes using the Bureau of Labor Statistics (BLS) Occupational Injury and Illness Classification System (OIICS); Exercise thoughtful, independent judgment to accurately classify…
ERG · Fairfax, Virginia, United States +3
HybridFull-timeEntry level$60K – $80K a yearEngineeringProvide technical and project support across ERG’s water-related projects; Assist with research, data collection, and analysis related to water resources, water quality, wastewater management, and water and wastewater treatment; Prepare technical reports, documentation, and…
Senior ColdFusion Developer
8 weeks agoERG · Fairfax, Virginia, United States +3
RemoteFull-timeSenior$140K – $180K a yearEngineeringDesign, develop, and enhance ColdFusion-based applications; Write and optimize SQL scripts, queries, stored procedures, and functions for Oracle databases; Design and implement Server database objects including tables, views, indexes, and triggers; Conduct application testing…
Mid-Level NPDES Permit Writer
2 months agoERG · Fairfax, Virginia, United States +3
RemoteFull-timeMid level$60K – $90K a yearEngineeringDevelop, review, and revise individual and general NPDES permits, fact sheets or statements of basis, public notices, response to comments documents, and supporting administrative records; Review permit applications, discharge monitoring reports, facility records, engineering…
Senior Contracts Administrator
3 months agoERG · Washington, District of Columbia, United States +3
RemoteFull-timeSenior$115K – $130K a yearLegal & complianceAdminister federal, state, and/or local contracts across the full lifecycle, including proposal preparation, negotiation, administration, and closeout; Collaborate with clients and cross-functional teams (technical, business development, subcontracts, and accounting) to deliver…
Senior Subcontracts Administrator
5 months agoERG · Fairfax, Virginia, United States +3
RemoteFull-timeSenior$80K – $125K a yearAdministrationManage the full lifecycle of subcontracts, including solicitation, negotiation, award, administration, and closeout; Review and evaluate subcontractor proposals, ensuring completeness, compliance, and proper documentation and approvals; Support proposal efforts by negotiating…
Mid-Level Water and Wastewater Engineer
5 months agoERG · Fairfax, Virginia, United States +3
RemoteFull-timeMid level$85K – $120K a yearEngineeringProviding technical assistance to small, underserved water and wastewater utilities across the country to access funding and design, build, and maintain sustainable, resilient water infrastructure systems and provide clean water to their communities; Assessing and promoting…
Senior Scientist/Engineer
6 months agoERG · Fairfax, Virginia, United States +3
RemotePart-timeSenior$65.00 – $180.00 an hourEngineeringThis position involves providing research support on research projects for the U.S. EPA, states, and nonprofit organizations; This will require reviews of Superfund site documents, mathematical modeling, and report writing and editing. In addition, the position involves…
Wetlands 404 Expert
11 months agoERG · Fairfax, Virginia, United States +1
RemotePart-timeLead / staff$34.00 – $74.00 an hourEngineeringCollaborate with clients and ERG’s technical teams to support state and federal clients implement Section 404 of the Clean Water Act requirements; Draft 404 permits or similar state permits (including general permits) for applicants for the discharge of dredged or fill material…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.