Principal Electrical Engineer, NA Vantage Data CentersPrincipal Electrical Engineer, NAMarylandDeveloping and operating across North America, EMEA and Asia Pacific, Vantage has evolved data center design in innovative ways to deliver dramatic gains in reliability, efficiency and sustainability in flexible environments that can scale as quickly as the market demands. Highly skilled in project engineering and design work, the Principal Electrical Engineer handles complex and high-impact assignments, providing technical expertise to guide project success.
NewPrincipal Engineer – TeraWave RF and Optical Systems Blue OriginPrincipal Engineer – TeraWave RF and Optical SystemsWashingtonand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. Direct the architecture of high-fidelity HITL frameworks that replicate orbital dynamics — delay/Doppler profiles, azimuth/elevation tracking, handovers, and real-time kinematics — using CATR/anechoic ranges, channel emulators, GNSS simulators, hexapods/positioners, and precision RF and optical reference instrumentation.
Principal Engineer, Survivability (R4608) Shield AI IncPrincipal Engineer, Survivability (R4608)Washington, DC$200,000–$310,000 / yearLead or support signature testing efforts, including indoor and outdoor RCS range tests, validation campaigns, and supplier-level hardware evaluations. With offices and facilities across the U.S., Europe, the Middle East, and the Asia-Pacific, Shield AI's technology actively supports operations worldwide.
Principal Engineer - FPGA/ASIC Design Rolls-Royce Holdings PlcPrincipal Engineer - FPGA/ASIC DesignWashington D.C., DC$152,033–$247,054 / yearRolls-Royce is looking for a Principal Engineer - FPGA/ASIC Design (Field Programmable Gate Arrays / Application Specific Integrated Circuit) Design Specialist to join our growing team. This is an exciting opportunity to work on flagship Rolls-Royce programs and play a vital role in solving some of the most complex and interesting technological challenges in the industry while being part of a global, multi-disciplinary team.
Data Center BESS Principal Engineer Fluence EnergyData Center BESS Principal EngineerArlington, VirginiaDeep knowledge of data center electrical infrastructure and project delivery (e.g., MV/LV distribution, substations, UPS and backup generation interfaces, protection schemes, commissioning) and how a utility‑scale BESS integrates at the site or grid level. Expertise to engage deeply with engineering and operations teams on topics such as medium-voltage electrical distribution, load profiles, interconnection, power quality, controls/integration, and project execution constraints.
Data Center BESS Principal Engineer Fluence Energy IncData Center BESS Principal EngineerArlington, VADeep knowledge of data center electrical infrastructure and project delivery (e.g., MV/LV distribution, substations, UPS and backup generation interfaces, protection schemes, commissioning) and how a utility‑scale BESS integrates at the site or grid level. Expertise to engage deeply with engineering and operations teams on topics such as medium-voltage electrical distribution, load profiles, interconnection, power quality, controls/integration, and project execution constraints.
Principal Engineer - System Verification and Validation BAE Systems PlcPrincipal Engineer - System Verification and ValidationRockville, MD$118,095–$200,762 / yearBachelor's degree in Systems, Mechanical, Electrical Engineering, or a related engineering discipline with at least 6 years of relevant experience; or a Master's degree in Systems, Mechanical, Electrical Engineering, or a related engineering discipline with at least 4 years of experience; or a Doctorate in Systems, Mechanical, Electrical Engineering, or a related engineering discipline with at least 2 years of experience. About BAE Systems Intelligence & Security BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services.
Principal Engineer - AI Platform & Operations Serko LtdPrincipal Engineer - AI Platform & OperationsWashington, DC$148,000–$210,000ML Infrastructure Mastery: Expert-level knowledge of model serving (e.g., Triton, vLLM, Ray Serve) and deep experience with Kubernetes and cloud ecosystems (AWS/GCP/Azure). When you join Serko, you become part of a team of passionate travellers and technologists bringing people together, using the world’s leading business travel marketplace.
Principal Engineer Thomson Reuters CorpPrincipal EngineerWashington, DCIndustry Competitive Benefits: We offer comprehensive benefit plans to include flexible vacation, two company-wide Mental Health Days off, access to the Headspace app, retirement savings, tuition reimbursement, employee incentive programs, and resources for mental, physical, and financial wellbeing. About you: Youre a good fit for the role of Principal Engineer if your background includes: • 10+ years of hands-on software engineering experience with a proven record of developing scalable and resilient web-based products and solutions.
Principal Engineer High Company LLCPrincipal EngineerBaltimore, MDEngineering leadership and management: Ensure that on projects assigned within the region or national account, technical staff: Adhere to StructureCare quality, schedule, and budget requirements, adjusting as necessary to meet targets. Manage assigned direct and/or indirect report relationships including: Conduct all required performance reviews with regular check-ins, documentation and positive coaching as required to ensure the development of engineers assigned.
Principal Engineer, Survivability (R4608) Shield AIPrincipal Engineer, Survivability (R4608)Washington, DCLI-AD6 #LF Full-time regular employee offer package: Pay within range listed + Bonus + Benefits + Equity Temporary employee offer package: Pay within range listed above + temporary benefits package (applicable after 60 days of employment) Salary compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, licenses and certifications, and specific work location. Lead or support signature testing efforts, including indoor and outdoor RCS range tests, validation campaigns, and supplier-level hardware evaluations.
Principal Engineer, State Estimation (R4602) Shield AIPrincipal Engineer, State Estimation (R4602)Washington, DCLI-SM1 #LF Full-time regular employee offer package: Pay within range listed + Bonus + Benefits + Equity Temporary employee offer package: Pay within range listed above + temporary benefits package (applicable after 60 days of employment) Salary compensation is influenced by a wide array of factors including but not limited to skill set, level of experience, licenses and certifications, and specific work location. Required qualifications: MS or PhD in Computer Science, Software Engineering, Electrical Engineering, Aerospace Engineering, Mechanical Engineering, Applied Mathematics, or related field 15+ years of experience developing state estimation algorithms for aerospace navigation applications.
Principal Engineer, Advanced Thermal Modeling Baltimore Aircoil Company, Inc.Principal Engineer, Advanced Thermal ModelingJessup, MD$108,200–$185,200 / yearPart timeThe Global Advanced Digital Engineering team is Baltimore Aircoil Company’s (BAC) engine, combining domain SME, software, and automation expertise to build modular, scalable, and reusable engineering capability, including models, methods, tools, CAD and simulation environments, workflows, and digital architectures that improve speed, quality, and consistency of engineering outcomes across BAC’s products, applications, and digital ecosystems. The role spans unit-level physics, system-level performance, and cost-of-ownership modeling, with accountability for modeling strategy, architecture, and delivery through direct contribution and team execution, and translates thermodynamic and heat transfer expertise into scalable modeling frameworks, simulation tools, and validated methods.
Principal Aerospace Engineer Cummings Aerospace IncPrincipal Aerospace EngineerWashington, DCThe individual will be a technical leader for engineering activities including the development of Guidance, Navigation, and Control (GNC) algorithms and modeling and simulation tools, performing GNC trade studies and performance assessments of aerospace systems, and leading engineering analysis. Lead a small team of scientists and engineers to model, simulate and study the performance of potential Air Force guided weapon systems, concepts and advanced weapon subsystem technologies.
Principal System Engineer - Payload AST & Science LLCPrincipal System Engineer - PayloadLanham, MDWe are seeking an experienced and highly innovative Principal Systems Engineer - Payload to lead the design and development of advanced end-to-end wireless systems within a complex telecommunications environment. Our engineers and space scientists are on a mission to eliminate the connectivity gaps faced by today's five billion mobile subscribers and finally bring broadband to the billions who remain unconnected.
NewPrincipal Software Engineer - PA172 Zoominfo Technologies IncPrincipal Software Engineer - PA172Bethesda, MDRemote$163,800–$257,400 / yearSkilled at designing and implementing LLM-powered systems such as RAG pipelines, agent frameworks (e.g., LangGraph), or intelligent workflows that reason across large datasets in real time. You'll be joining a team with a broad range of ambitious, technically deep projects-from APIs that process tens of billions of events per day, to new buyer intent algorithms powered by LLMs, to a unified B2B identity graph.
NewSr. / Principal Welding Process Engineer Hydrasearch Co LLCSr. / Principal Welding Process EngineerStevensville, MD$116,000–$156,000 / yearIn this role you will be a senior technical contributor responsible for developing welding and joining capabilities that support Hydrasearchs aerospace, naval, and defense programs. Design for Weldability: Provide early technical input to development teams to ensure manufacturability and prevent late-stage rework.
Principal Software Engineer - Backend Dragos IncPrincipal Software Engineer - BackendDCRemoteAs the market leader in ICS/OT Cybersecurity, we are dedicated to arming our customers with best-in-class technology, threat intelligence, and services to protect their systems as effectively and efficiently as possible. Dragos is on a relentless mission to defend industrial organizations that provide us with the necessities of modern civilization; running water, functioning electricity, and safe industrial working environments.
Principal Software Engineer (SWE-4) LeidosPrincipal Software Engineer (SWE-4)MarylandTechnical Proficiency : Develop and debug software using object-oriented programming languages; perform software engineering and technical design activities; analyze and understand legacy code; develop efficient algorithms utilizing data structures, dynamic programming, heuristics, and modeling techniques; conduct software testing and troubleshooting; work at the operating system level, including file I/O, system interfaces, and low-level programming concepts; and develop advanced tools for binary analysis, shellcode detection, malware analysis, function identification, and reverse engineering of compiled software. The engineer will work closely with mission stakeholders to analyze software requirements, design innovative technical solutions, develop software applications, and implement high-performance capabilities supporting advanced mission objectives.
NewSoftware Engineer-PMTS-Architecture and Design-REST/SOAP WebSvc-Jenkins/Maven-CIO Org Pinnacle Group IncSoftware Engineer-PMTS-Architecture and Design-REST/SOAP WebSvc-Jenkins/Maven-CIO OrgWashington, WARemote$90–$95 / hourDesign, build, and operate the RESTful web services that power the voice agent - voice capture/playback backends, streaming agent responses, session state, and deep integration with Slack's mobile apps - and integrate with (and help modernize) existing SOAP-based enterprise web services in the CIO organization. Expert-level REST API design (versioning, pagination, error models, idempotency, authN/authZ) and working fluency with SOAP/WSDL enterprise web services, including migrating or wrapping SOAP services behind modern REST interfaces.