Engineering services for oil, gas, and petrochemical projects
Sigma Engineers and Constructors designs and executes capital projects for North America's upstream and downstream energy sectors. The tech stack—Primavera P6, Aspen HYSYS/Plus, AutoCAD, Bluebeam, ETAP, and Power BI—reflects a traditional engineering services operation built around simulation, design, and project controls. Active hiring skews heavily toward engineering (11 of 14 open roles), with mid-to-senior seniority, alongside simultaneous efforts to integrate digital tools for real-time project visibility and standardize execution workflows across distributed teams.
Sigma Engineers and Constructors is a privately held professional engineering firm based in Baton Rouge, Louisiana, serving the oil, gas, petrochemical, refining, and utility sectors across North America since 1987. The firm delivers end-to-end engineering, design, and construction services—spanning civil, structural, mechanical, piping, electrical, instrumentation, process, and safety disciplines—with demonstrated capability in complex technical domains including cracking, fractionation, heat transfer, gas compression, and environmental remediation. Current operational priorities center on project execution consistency, cost optimization, on-time/on-budget delivery, and modernization of internal digital infrastructure to enable real-time project insights and integrated management across geographically distributed engineering and production teams.
Primavera P6 (project management), Aspen HYSYS and Aspen Plus (process simulation), AutoCAD and Bluebeam (design and markup), Power BI (analytics), ETAP (electrical systems), Deltek and Deltek Vantage (ERP), plus Microsoft Office, SharePoint, and Azure DevOps.
Baton Rouge, Louisiana. The firm was founded in 1987 and operates as a privately held company with 51–200 employees.
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