AT Engineering Services is a California consulting engineering practice providing mechanical, process, oil and gas, energy, petrochemical, chemical, pharmaceutical, industrial, and power engineering services. AT Engineering Services has operated since 1993 and supports clients with technical engineering design and consulting.
WebsitePhone1 officeFounded 1993Updated Jun 2026
Service detail: Mechanical and Plumbing Engineering
Service: Mechanical and Plumbing EngineeringService: Process EngineeringService: Heat Transfer and Piping DesignIndustry: Oil & GasIndustry: PetrochemicalType: Mechanical Engineering+10 more
Service: Mechanical EngineeringService: Mechanical System DesignService: HVAC Systems DesignIndustry: AerospaceIndustry: NuclearType: Civil Engineering+46 more
Website3 offices5 projects3 leaders1 credentialsFounded 2012Updated Jun 2026
Project: Oakdale Wastewater River Crossing
Service: Drinking Water EngineeringService: Hydraulic ModelingService: Water Treatment Plant DesignIndustry: Water SupplyIndustry: WastewaterType: Water / Wastewater Engineering+26 more
Service: Sanitary Engineering ConsultingService: Wastewater System EngineeringService: Drinking Water System DesignIndustry: WastewaterIndustry: Water SupplyType: Water / Wastewater Engineering+20 more
CJSeto Support Services, LLC is an environmental compliance, safety, information technology, logistics, and workforce training firm headquartered in Ventura, California. Founded in 1999, CJSeto holds ISO 9001:2015 certification and serves federal agencies, educational institutions, healthcare providers, and commercial clients. Its environmental practice covers hazardous waste management, EPA and RCRA compliance, NEPA documentation, spill prevention planning, environmental monitoring and remediation, and asbestos and lead monitoring. Its safety and industrial hygiene practice encompasses OSHA compliance audits, indoor air quality testing, chemical inventory management, respiratory protection, and hazard assessments. Additional service areas include IT infrastructure, cybersecurity and information assurance, logistics and inventory management, and professional training including HAZWOPER, OSHA, and EPA compliance courses. Federal clients include the U.S. Navy, Department of Homeland Security, NASA, and the Veterans Administration.
WebsitePhone1 office1 credentialsFounded 1999Updated Jun 2026
Service detail: Environmental Compliance
Service: Environmental ComplianceService: Hazardous Waste ManagementService: Environmental Monitoring and SamplingIndustry: FederalIndustry: DefenseType: Environmental Engineering+22 more
Service: Fire Protection and Life Safety ConsultingService: Building and Fire Code ComplianceService: Fire Protection System DesignIndustry: AviationIndustry: HealthcareType: Fire Protection Engineering+14 more
Website22 offices4 projects4 leadersSize Estimate: 200-1,000 employeesUpdated Jun 2026
Project: Uncovering the Truth Behind a Toy Archery Injury
Service: Accident ReconstructionService: Motor Vehicle Accident ReconstructionService: Industrial and Workplace Incident AnalysisIndustry: AgricultureIndustry: MiningType: Chemical Engineering+57 more
Fiedler Group is a Pasadena, California-based design and engineering firm founded in 1957, specializing in fueling station and petroleum facility engineering. It provides site investigation reports, entitlement processing, design and engineering, permit acquisition, bidding and procurement assistance, construction support, and program management across the retail petroleum, convenience market, alternative fuels, industrial and petrochemical, food service, commercial, and government sectors throughout the United States. As of January 1, 2026, Fiedler Group joined TAIT and Associates.
WebsitePhone1 officeFounded 1957Updated Jun 2026
Service detail: Design and Engineering
Service: Site Investigation ReportsService: EntitlementService: Design and EngineeringIndustry: Oil & GasIndustry: RetailType: Environmental Engineering+14 more
WebsitePhone2 offices6 projects1 credentialsUpdated Jun 2026
Project: MIS Hip Distractor System
Service: Medical Device DevelopmentService: Human Factors EngineeringService: Industrial DesignIndustry: Medical DevicesIndustry: Life SciencesType: Mechanical Engineering+21 more
WebsitePhone2 offices2 leaders1 credentialsUpdated Jun 2026
Service detail: ISR Ground Support Systems
Service: ISR Ground Support SystemsService: Deployable Shelter SystemsService: Jack and Caster Mobilizer AssembliesIndustry: DefenseIndustry: FederalType: Defense Engineering+31 more
WebsitePhone1 office10 leaders2 credentialsFounded 1997Updated Jun 2026
Service detail: Monitoring Systems Design
Service: Monitoring Systems DesignService: Sensor Selection and PlacementService: Permit AcquisitionIndustry: SemiconductorsIndustry: Life SciencesType: Automation & Controls+25 more
The right people. The right place. The right time.
WebsitePhone18 offices1 credentialsSize Estimate: 2,700 employeesUpdated Jun 2026
Service detail: Engineering Design
Service: Engineering DesignService: Conceptual and Front End StudiesService: Capital Projects EngineeringIndustry: AgricultureIndustry: ChemicalsType: EPC+27 more
