Engineering, environmental remediation, and construction services for federal and commercial clients
OESC Group operates a diversified portfolio of engineering, environmental, and construction subsidiaries serving federal agencies and commercial customers. The tech stack reflects a heavy concentration in CAD and GIS tools (AutoCAD Civil 3D, ArcGIS Pro, MicroStation, OpenRoads Designer) alongside enterprise infrastructure (AWS, ServiceNow, GitLab, Citrix), indicating a capital-intensive, compliance-driven operation managing complex site remediation and infrastructure projects. The hiring profile is engineering-forward (8 of 20 active roles) with mid- to senior-level dominance, aligned to their active project load in CERCLA/RCRA environmental remediation, roadway design, and federal task-order support.
OESC Group is a portfolio of environmental services, engineering and design, construction, and technology services companies owned by Oneida Nation. The organization operates across three core service lines: environmental remediation (site characterization, corrective action, and restoration work), engineering and design (primarily roadway and infrastructure design), and construction and technical services. Primary customers include U.S. federal agencies and commercial entities managing contaminated sites, hazardous waste, and infrastructure development. With 201–500 employees across the portfolio, OESC manages high-volume workforce deployment and compliance-heavy contract work, including IDIQ and task-order delivery models.
AutoCAD Civil 3D, ArcGIS Pro, MicroStation, and OpenRoads Designer for design; AWS and GitLab for infrastructure; ServiceNow for asset and contract management; Jira and Redmine for project tracking.
Milwaukee, Wisconsin. The company operates as a privately held family of subsidiaries owned by Oneida Nation.
OESC (Oneida ESC Group)'s technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →
This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.