Entry Level Civil Engineer Huska & Horgan EngineeringEntry Level Civil EngineerReston, VA$78,000–$90,000 / yearHuska & Horgan Engineering, LLC is a site civil and land development firm at 1050 30th St NW in Washington, D.C. Six people, two of them licensed principals, more than 30 years of combined experience, nine municipalities served. Entry level civil engineer, $78,000 to $90,000, doing real grading, stormwater management and utility design on permitted projects in your first year.
Senior Software Engineer GliaCell TechnologiesSenior Software EngineerAnnapolis Junction, MD$170,000–$240,000 / yearWe also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat. GliaCell’s Enterprise capabilities include Full-Stack Application Development, Big Data, Cloud Technologies, Analytics, Machine Learning, AI, and DevOps Containerization.
Data Engineer - Data Architecture for Data Science & Machine Learning Pennsylvania State UniversityData Engineer - Data Architecture for Data Science & Machine LearningReston, VA$146,040–$318,840 / yearWe are seeking a Senior Data Engineer with deep expertise in database design, optimization, and data access strategies to support our growing data science and machine learning initiatives within the Information Science Division of the Applied Research Laboratory (ARL) at Penn State. The ideal candidate is a PostgreSQL expert who also brings hands-on experience with other modern data storage technologies-such as NoSQL, graph, and time-series databases-and can guide the organization in choosing the right tools and structures for each data use case.
Principal Systems Engineer/SME LeidosPrincipal Systems Engineer/SMEFort Meade, MarylandThe Principal Systems Engineer serves as a senior technical authority leading the design, integration, testing, deployment, training, and sustainment of packet-based hardware and software systems utilizing Commercial Off-The-Shelf (COTS) and Government Off-The-Shelf (GOTS) products. March 6, 2026 For 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.
Principal Quality Engineer Thales Defense & SecurityPrincipal Quality EngineerGermantown, MD$121,230–$154,905 / yearWith over 1,000 employees, TDSI and its four subsidiaries (Advanced Acoustic Concepts, Digital Receiver Technology, Tampa Microwave, and Trusted Cyber Technologies), supports U.S. Joint Services, special operations forces and multi-national partners with a variety of communication, visualization, signal intelligence/electronic warfare, and sensor/sonar capabilities. Supports Program Quality Assurance activities for production programs to include First Article Inspections (FAI), Material Review Board (MRB), Change Control Board (CCB), Failure Review Board (FRB), and Work Product review and approval.
Senior Principal RF/Microwave Amplifier MMIC Design Engineer Analog Devices IncSenior Principal RF/Microwave Amplifier MMIC Design EngineerDCRemote$157,080–$227,460 / yearThe RF/Microwave Amplifier MMIC Design Group is seeking an Amplifier MMIC Design Engineer for developing world class RF/Microwave/Millimeter-wave GaAs and GaN LNA/Driver Amplifier/Power Amplifier MMICs. ADI combines analog, digital, AI, and software technologies into solutions that combat climate change, reliably connect humans and the world, and help drive advancements in automation and robotics, mobility, healthcare, energy and data centers.
Principal Cybersecurity Systems Engineer Leidos Holdings IncPrincipal Cybersecurity Systems EngineerMD$154,050–$278,475 / yearProvide technical support for the development, engineering, interfacing, integration, and testing of specific components of complex hardware/software systems to include requirements elicitation, analysis and functional allocation, conducting systems requirements reviews, and performing technical/non-technical assessments. Primary Responsibilities: Perform cybersecurity high assurance evaluation activities to include reviews of security evaluation documents and other high assurance artifacts/documents for devices undergoing certification and assessment, to ensure devices meet security requirements.
Principal Software Engineer Financial Industry Regulatory Authority, Inc.Principal Software EngineerTysons Corner, VAFINRA employees are required to disclose to FINRA all brokerage accounts that they maintain, and those in which they control trading or have a financial interest (including any trust account of which they are a trustee or beneficiary and all accounts of a spouse, domestic partner or minor child who lives with the employee) and to authorize their broker-dealers to provide FINRA with duplicate statements for all of those accounts. Additional insurance includes basic life, accidental death and dismemberment, supplemental life, spouse/domestic partner and dependent life, and spouse/domestic partner and dependent accidental death and dismemberment, short- and long-term disability, long-term care, business travel accident, disability and legal.
R&D Engineer: Software Engineer Pennsylvania State UniversityR&D Engineer: Software EngineerReston, VA$110,520–$240,960 / yearNotice regarding employment at the Applied Research Laboratory (ARL): Employees must be eligible to obtain a government security clearance, participate in the ARL drug testing program, and comply with electronic and physical monitoring requirements applicable to federal contractors. Preferred Skills/Experience areas include: Prior success collaborating with product owners, researchers, system engineers, and other stakeholders to translate requirements into well-architected technical designs.
Lead Principal Platform Software Engineer Oracle CorpLead Principal Platform Software EngineerVienna, VA$96,800–$306,400 / yearOracle maintains broad salary ranges for its roles in order to account for variations in knowledge, skills, experience, market conditions and locations, as well as reflect Oracle''s differing products, industries and lines of business. This role is ideal for a strategic technical leader who can bridge business objectives with modern cloud technologies while delivering enterprise-grade solutions in a highly regulated financial environment.
Principal Biometrics Software Engineer Leidos Holdings IncPrincipal Biometrics Software EngineerBethesda, MD$131,300–$237,350 / yearThe Biometrics Software Engineer role specializes in integrating biometric technologies (e.g., fingerprint, facial recognition, iris scanning) from systems such as IDEMIA's MBSS into existing software systems, requiring expertise in both biometric algorithms and software development practices to seamlessly connect biometric data capture with other applications and platforms. Biometric Integration: Design and implement software modules to integrate various biometric modalities (facial recognition, fingerprint, iris scan) with existing applications and systems using provided SDKs and APIs.
Principal Software Engineer (SWE-4) Leidos Holdings IncPrincipal Software Engineer (SWE-4)MD$131,300–$237,350 / yearTechnical 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.
Sr Principal DT Security Engineer - 90397492 - null National Railroad Passenger CorpSr Principal DT Security Engineer - 90397492 - nullWashington, DC$149,400–$193,644 / hourExpertise in designing, developing, and troubleshooting scripts and applications using Python or other modern programming languages, with extensive experience integrating REST, SOAP, vendor-specific APIs, and event-streaming platforms such as Apache Kafka to automate, optimize, and scale business processes and system integration. Our values of 'Do the Right Thing, Excel Together and Put Customers First' are at the heart of what matters most to us, and our Core Capabilities, 'Building Trust, Accountability, Effective Communication, Customer Focus, and Proactive Safety & Security' are what every employee needs to know and do to be most impactful at Amtrak.
Application Architecture, Sr. Principal Blue Cross and Blue Shield AssociationApplication Architecture, Sr. PrincipalBaltimore, MDIn this role, you will shape how Stellarus designs reusable services, integrates strategic vendors, applies AI-assisted development patterns, and turns platform strategy into systems that engineering teams can build, test, deploy, and operate. The Senior Principal is the technical authority for application architecture across the platform: someone who sets enterprise-level architecture direction without needing a team to do it, and who is close enough to the code, system design, and production tradeoffs to make that direction credible to engineers.
Rolling Stock Electrical Services Senior/Principal Consultant AtkinsRealisRolling Stock Electrical Services Senior/Principal ConsultantWashington, DC$130,000–$216,000 / yearWe are seeking a Rolling Stock Electrical Services Senior/Principal Consultant to join our team in Los Angeles, CA to provide high quality rolling stock consultancy services to clients primarily in the field of electrical systems, such as vehicle control circuits, propulsion and traction control, auxiliary power/battery, EMI/EMC, software, lighting, high voltage collection and distribution, communication systems, monitoring & diagnostics, and/or other rail vehicle electrical systems across of a variety of vehicle types, including commuter rail, streetcars, light rail, locomotives, and metro vehicles. AtkinsRéalis believes that conviction records may have a direct, adverse, and negative relationship to the following job duties: accessing company property, information, assets, and products; accessing confidential information and partnering and regularly working with or supervising other AtkinsRéalis employees and interacting with AtkinsRéalis clients including government property or ports.
Principal Architect Unissant IncPrincipal ArchitectWashington, DCPreferred certifications include TOGAF, AWS Certified Solutions Architect, Microsoft Certified: Azure Solutions Architect Expert, Google Cloud Professional Cloud Architect, SAFe Architect, or comparable cloud, DevSecOps, security, data architecture, and enterprise architecture credentials. This role will work closely with client technical stakeholders, program leadership, and delivery teams to ensure the program's cloud, security, data, analytics, AI-enabled services, and integration capabilities are secure, scalable, interoperable, and aligned to mission needs.
Principal Platform Architect Applied Information SciencesPrincipal Platform ArchitectReston, VirginiaYou are equally comfortable leading executive architecture workshops, writing Infrastructure-as-Code, implementing GitHub Actions, automating cloud deployments, building governance models, and solving complex platform engineering and DevSecOps challenges. You will work directly with client engineering, operations, and product teams to implement secure, scalable, and automated platforms, mentor technical teams, and lead complex transformation engagements from strategy through delivery.
Lead / Principal Enterprise Architect LCGLead / Principal Enterprise ArchitectRockville, MarylandThis role bridges business strategy and technical execution: partnering with executive stakeholders to understand business drivers, working with vendors to evaluate and integrate commercial products, and collaborating closely with existing development teams to translate architectural vision into effective, buildable designs. The role does not require day-to-day hands-on application development; however, the architect must be technically proficient enough to evaluate solutions, challenge technical approaches, guide development teams, and translate architectural concepts into implementable designs.
Principal Architect UnissantPrincipal ArchitectWashington, DCFull timePreferred certifications include TOGAF, AWS Certified Solutions Architect, Microsoft Certified: Azure Solutions Architect Expert, Google Cloud Professional Cloud Architect, SAFe Architect, or comparable cloud, DevSecOps, security, data architecture, and enterprise architecture credentials. This role will work closely with client technical stakeholders, program leadership, and delivery teams to ensure the program's cloud, security, data, analytics, AI-enabled services, and integration capabilities are secure, scalable, interoperable, and aligned to mission needs.
Principal Analyst, Mission Assurance & Systems Integration GFT Infrastructure IncPrincipal Analyst, Mission Assurance & Systems IntegrationOwings Mills, MD$135,000–$160,000 / yearBeyond project delivery, you will help shape the growth of our Mission Assurance and Strategy Implementation (MASI) practice, serve as a trusted advisor to clients, and contribute to the future of security and resilience across some of the nation''s most important infrastructure and operational environments. What you'll be challenged to do: We are seeking an experienced Principal Analyst, Mission Assurance & Systems Integration to lead complex security, resilience, and infrastructure protection initiatives for federal, public-sector, and critical infrastructure clients.