Exploitation Specialist/GDAT Software Engineer LeidosExploitation Specialist/GDAT Software EngineerSaint Louis, MO$73,450–$132,775If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. January 13, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Senior Level Software Developer DCS CorpSenior Level Software DeveloperSt. Louis, MissouriOr, a Bachelor of Science or equivalent degree in Computer Science, Engineering, Mathematics, Information Systems or equivalent technical degree and a minimum of 10 years of experience in full stack development to include Java, Web services, Database, and micro-service development software, engineering/development, or a related area that demonstrates the ability to successfully perform the duties associated with this work. These may include, but are not limited to: Tools - Boundless Spatial suite, Remote View, PostGRES/PostGIS, Oracle Spatial and/or other geospatial databases, ArcGIS Desktop, ArcGIS Server, Image Server, and File Geodatabases.
NewControls Engineer – Building Automation Systems (BAS) JobotControls Engineer – Building Automation Systems (BAS)St. Louis, MO$90,000–$110,000 / yearThis organization delivers complete automation solutions for commercial, healthcare, industrial, education, government, and mission-critical facilities, providing expertise in building automation, HVAC controls, life safety, security integration, and related building technologies. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.
NewAutomation Engineer IV (Hybrid) Everforth, CybercodersAutomation Engineer IV (Hybrid)Saint Louis, MO$130,000–$170,000 / yearThe Automation Engineer IV will collaborate with multidisciplinary teams to develop robust PLC/HMI solutions, produce control schematics and panel designs, support fabrication and wiring activities, and ensure systems meet safety, electrical (NEC) and process requirements. This senior role focuses on controls and instrumentation engineering, control system architecture, network integration, and project delivery in regulated manufacturing environments (GMP).
NewMechanical Engineer - Aviation/Airport Terminal Construction Kwame Building Group, Inc.Mechanical Engineer - Aviation/Airport Terminal ConstructionBridgeton, MOThe Mechanical Engineer will work collaboratively with KBG project leadership, architects, engineers, contractors, consultants, airport representatives, and other stakeholders throughout the design and construction process. This position will support an active airport terminal construction project and may require a combination of office-based engineering work, design coordination meetings, client meetings, and field/site visits.
NewSecurity Engineer Hunter Engineering CompanySecurity EngineerBridgeton, MODesign, implement, manage, maintain, improve, and troubleshoot Hunter’s various security systems, including but not limited to Data Loss Prevention (DLP), SIEM and UEBA, endpoint protection, and data security/auditing platforms. Analyze and audit systems, software, processes, implementations, and environments for compliance with policies, regulations, and security best practices; and recommend and implement refinements and enhancements, in collaboration with individuals and teams.
NewMechanical Engineer The Korte CompanyMechanical EngineerSaint Louis, MOThis is an excellent opportunity for an experienced mechanical professional looking to grow into a future Mechanical Design Manager role within a collaborative, nationwide design-build firm. This position is responsible for supporting the design and coordination of mechanical, electrical, and plumbing systems for commercial and government design-build projects.
NewMechanical Engineer - Mission Critical ClaycoMechanical Engineer - Mission CriticalSaint Louis, MOWith $8.1 billion in revenue for 2025, Clayco specializes in the "art and science of building," providing fast track, efficient solutions for mission critical, industrial, life sciences, power & energy, aviation, commercial, institutional, residential and sports & entertainment related building projects. Working alongside a Senior Mechanical Engineer on each project, this mid-level role is responsible for producing detailed mechanical designs, performing analyses, and coordinating with multi-disciplinary teams to deliver infrastructure that meets demanding uptime and efficiency requirements in a fast-paced environment.
NewTransportation Engineer (Traffic/Technology) Harrison Consulting SolutionsTransportation Engineer (Traffic/Technology)Saint Louis, MOJob Description Multi-state design firm is seeking a Transportation Engineer (Traffic/Technology) for their team in St. Working knowledge of Synchro, SimTraffic, HCS, VISSIM or other similar software.
NewCivil Designer/Engineer THD Design GroupCivil Designer/EngineerChesterfield, MOEXPERIENCE Six years civil site plan and/or residential construction design experience Required Six years AutoCAD software experience Required Six years Civil 3D software experience Required Familiar with MSD, St. Louis County and St. Working with Project managers as well as clients on the design of subdivisions, multi-family residential complexes, commercial and industrial site planDevelop or modify deliverables based on rough sketches, marked-up copies and/or detailed verbal instructions.
NewTraffic Civil Engineer III Crawford Murphy & Tilly IncTraffic Civil Engineer IIISaint Louis, MO$75,000–$95,000 / yearYou will contribute to traffic engineering studies, transportation planning efforts, roadway design projects, safety analyses, and multimodal transportation initiatives while continuing to expand your technical expertise, project delivery experience, and professional growth. As a Traffic Engineer III , you'll collaborate with engineers, planners, environmental scientists, technicians, clients, and public and private agency partners to develop transportation solutions that enhance safety, operations, and overall system performance.
NewRoadway Civil Engineer III Crawford Murphy & Tilly IncRoadway Civil Engineer IIISaint Louis, MO$75,000–$95,000 / yearAs a Roadway Engineer III , you'll collaborate with engineers, planners, environmental scientists, technicians, clients, and public and private agency partners to develop and deliver roadway, highway, multimodal, intersection, and other transportation infrastructure solutions. You will contribute to planning, design, and project delivery efforts while continuing to expand your technical expertise, transportation engineering knowledge, and professional growth through increased levels of responsibility within project teams.
NewPlumbing Engineer, Senior Vestal CorporationPlumbing Engineer, SeniorSaint Louis, MOPHYSICAL DEMANDS: Regularly required to walk, stand, use hands/fingers, handle tools, reach, climb, balance, stoop, kneel, crouch, crawl, talk, and hear. Incorporate hygienic design principles, including stainless steel piping, air gaps, indirect waste, and CIP/SIP systems, when needed.
NewSenior Mechanical Engineer ClaycoSenior Mechanical EngineerSaint Louis, MOWith $8.1 billion in revenue for 2025, Clayco specializes in the "art and science of building," providing fast track, efficient solutions for mission critical, industrial, life sciences, power & energy, aviation, commercial, institutional, residential and sports & entertainment related building projects. The Senior Mechanical Engineer will lead the mechanical design of projects, provide technical expertise, and ensure the successful delivery of engineering solutions for mission-critical facilities, including data centers, advanced manufacturing plants, and other high-availability environments.
NewCivil Engineer - Site Design OlssonCivil Engineer - Site DesignSaint Louis, MOAs Civil Engineer on our Site Design team, you will provide basic project design through CAD drafting, instruct drafters on how to create drawings of designs, and prepare project schedules. Pursuant to the California Consumer Privacy Act, as amended by the California Privacy Rights Act (collectively, the "CCPA"), this notice explains Olsson's practices regarding the collection, use, and disclosure of personal information for job applicants residing in California.
NewLicensed Civil Engineer - Data Center OlssonLicensed Civil Engineer - Data CenterChesterfield, MORemote$88,000–$116,000 / yearWe design large hyperscale data center campuses and colocation data centers throughout the U.S. This role will give you the opportunity to work on some of the largest and most complex engineering-driven projects being built today. Colorado Pay Range $88,000—$116,000 USD Additional Information Olsson specializes in engineering and design, client advisory services, planning, field services, and environmental.
NewLicensed Transportation Engineer - Traffic Technology OlssonLicensed Transportation Engineer - Traffic TechnologySaint Louis, MOPursuant to the California Consumer Privacy Act, as amended by the California Privacy Rights Act (collectively, the "CCPA"), this notice explains Olsson's practices regarding the collection, use, and disclosure of personal information for job applicants residing in California. Your passion for collaborative work and commitment to positively affecting communities will drive you to lead traffic planning, studies, design, and operations tasks and projects.
NewProfessional Engineer (Water/Wastewater) CochranProfessional Engineer (Water/Wastewater)Saint Charles, MOWith 120+ professionals, the firm delivers tailored solutions backed by deep expertise and is guided by core values of teamwork, excellence, quality, and trust—ensuring principal involvement and outstanding service throughout every project. Job Description Cochran is a growing civil engineering firm with 7 Missouri offices, offering services in construction administration, materials testing, architectural and geotechnical engineering, and land surveying.
NewLicensed Professional Engineer (Civil Site Development) CochranLicensed Professional Engineer (Civil Site Development)Saint Charles, MOWith 120+ professionals, the firm delivers tailored solutions backed by deep expertise and is guided by core values of teamwork, excellence, quality, and trust—ensuring principal involvement and outstanding service throughout every project. Job Description Cochran is a growing civil engineering firm with 7 Missouri offices, offering services in construction administration, materials testing, architectural and geotechnical engineering, and land surveying.