Principal Software Engineer, TS\/SCI with Polygraph Rivermatrix TechnologiesPrincipal Software Engineer, TS\/SCI with PolygraphAnnapolis Junction, Annapolis JunctionThe Software Engineer, shall have at least the following experience: Twenty (20) years of experience as a Software Engineer (SWE) supporting programs and contracts of similar scope, type, and complexity. Demonstrate working knowledge of Linux, CSS, JavaScript, and HTML to support UI design, troubleshoot design-related issues, and collaborate with development teams.
Principal Engineer, Software (R5285) Shield AIPrincipal Engineer, Software (R5285)Washington, DCHivemind consists of four products: EdgeOS (C++ based high-performance middleware for autonomy development), Pilot (autonomy for the edge built atop EdgeOS; a models-based, modular and open architecture C++ codebase), Forge (Shield AI's AI Factory for the design, development, and testing of Hivemind Edge systems; a service-oriented architecture leveraged through an SDK, CLI, and web portal; a Go, Python, Typescript codebase), Commander (Software and hardware to support rich human-in-the-loop and human-on-the-loop interactions with the Hivemind; a C++-based back-end for interaction with Pilot; and a web-application UI for mission planning, command and control by operators implemented in a Typescript/React codebase). #LI-KC3 #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.
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.
Design Engineer Principal 4 M.C. Dean, IncDesign Engineer Principal 4Tysons , Virginia$125,120–$156,400 / yearFull timeAssist other engineers in producing conceptual design to construction documents from utilization voltage to low voltage including, detailed equipment layout, single and three-line diagrams, grounding, and feeder routing. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and innovative power and technology solutions through engineering expertise and smart systems integration.
Principal Software Engineer Red Arch SolutionsPrincipal Software EngineerAnnapolis Junction, MDFull timeDetermination of official compensation or salary relies on several factors including, but not limited to, level of position, job responsibilities, geographic location, scope of relevant work experience, educational background, certifications, contract-specific affordability, organizational requirements, alignment with local internal equity as well as alignment with market data. The Software Engineer, shall have at least the following experience: • Twenty (20) years of experience as a Software Engineer (SWE) supporting programs and contracts of similar scope, type, and complexity.
Principal Engineer, Software Verint Systems, Inc.Principal Engineer, SoftwareAnnapolis, MDYou will operate at the intersection of hands-on engineering excellence and strategic technical leadership — contributing directly to complex features while shaping how the entire engineering organization builds, scales, and operates its software. + Cloud and Infrastructure: Deep hands-on experience with AWS or Azure including serverless compute, managed messaging (SQS/SNS/Service Bus), managed databases, and cost optimization.
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.
Principal DevSecOps Lead Engineer Accenture Federal ServicesPrincipal DevSecOps Lead EngineerSpringfield, VAThe pay range for the states of California, Colorado, Hawaii, Illinois, Maine, Maryland, Massachusetts, Minnesota, New Jersey, New York, Vermont, Virginia, Washington, and the District of Columbia, and the city of Cleveland is: $113,500—$190,100 USD What We Believe As a company wholly dedicated to serving the US federal government, we bring together the best talent to help reinvent how federal agencies operate and deliver greater value for their mission and the American people. As required by local law, Accenture Federal Services provides reasonable ranges of compensation for hired roles based on labor costs in the states of California, Colorado, Hawaii, Illinois, Maine, Maryland, Massachusetts, Minnesota, New Jersey, New York, Vermont, Virginia, Washington, and the District of Columbia, and the city of Cleveland .
Principal Structural Civil Engineer AES CorporationPrincipal Structural Civil EngineerArlington, VA$145,000–$181,050 / yearAES Renewables is seeking an experienced Structural Engineer to support design development, project engineering, plan reviews, owner's engineers, and construction of photovoltaic (PV), high voltage (HV), sub-station, and grid-scale battery energy storage systems (BESS) in coordination with the AES Business Development, Engineering and Construction teams and other markets. The Structural Engineer provides expert technical support across solar PV, substation, HV, and battery storage projects and serves as the team's subject matter expert for structural design.
Principal Data Engineer LeidosPrincipal Data EngineerBethesda, MarylandOur talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. Platform Development & Administration : Design, develop, and maintain probabilistic matching configurations, algorithms, and scoring models to ensure accurate entity resolution across multi-domain data sources.
Principal Integration Engineer SPM LeidosPrincipal Integration Engineer SPMBethesda, MarylandThe SPM tracks the team's work to the completion of all deliverables accepted into a PI; coordinates with team members and customer sets to ensure stories have all the information needed to complete the work and that all necessary stories are created; and coordinate / socialize production changes and brief appropriate boards for deployment approval. Provide systems engineering and integration support to the government for the integration of newly developed Capabilities targeted for Integration test and operational environments and develop and deliver the processes to perform integration, staging, and release management for these Capabilities.
Principal Resident Engineer (Federal) DragosPrincipal Resident Engineer (Federal)Washington DCRemotePartner with client teams on network architecture, sensor placement, and integrations; coordinate and conduct full deployments including upgrades, patches, and configuration changes. Serving as a trusted technical partner, you'll guide customers through deployment, troubleshooting, and ongoing platform adoption, enabling them to strengthen and sustain the security of their critical infrastructure.
Principal AI Software Engineer (SWE-4) LeidosPrincipal AI Software Engineer (SWE-4)MarylandTechnical Proficiency : Proficient in current AI/ML technologies such as classification, clustering, collaborative filtering, search, and retrieval using techniques such as but not limited to deep neural networks (DNN), recurrent neural networks (RNN), attention-based transformers, etc. The candidate will work across multiple technical domains including software engineering, data science, machine learning, and large language model (LLM) integration to deliver innovative capabilities from proof-of-concept through operational deployment.
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.
Principal Software Engineer (TS/SCI with Polygraph required) Red AlphaPrincipal Software Engineer (TS/SCI with Polygraph required)Annapolis Junction, MarylandOur total compensation package was strategically designed with our members in mind with the intention to: reward our members for their hard work and commitment to our customers' missions; allow members to share in Red Alpha's success as we continue to grow and expand our footprint; provide long-term career opportunities through stability and internal mobility; and provide the resources our members need to support themselves and their dependents in the form of a robust benefits package. Our approach in determining final salaries takes into consideration a number of factors such as education, certifications, total years of relevant professional experience, actual level of expertise, and the responsibilities of the role itself.
Principal Software Engineer TS/SCI Polygraph LeidosPrincipal Software Engineer TS/SCI PolygraphHanover, MarylandOur talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. May 20, 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 Software Engineer Kastle SystemsPrincipal Software EngineerFalls Church, Virginia$150,000–$175,000 / yearSoftwareEngineer #Linux #DevOps #CI_CD #Automation #Python #Bash #ShellScripting #Monitoring #Prometheus #Grafana #Security #AWS #Azure #GCP #Git #PerformanceTuning #ProductionSupport #SoftwareDeployment #LinuxSoftwareDev #SoftwareEngineer #CloudEngineer #AI/ML #gstreamer #ffmpeg #accesscontrol #videosecurity #videosurveillance #artificialintelligence #machinelearning. Kastle is the premier provider of property technology solutions, with a track record of introducing innovative technologies to serve over 460M square feet of real estate globally.
Principal Civil Engineer - TS/SCI Polygraph Required LeidosPrincipal Civil Engineer - TS/SCI Polygraph RequiredReston, VirginiaAll-Source Information Evaluation: Demonstrated experience researching, assessing, and synthesizing diverse intelligence and technical sources, including classified intelligence, open-source information, and grey literature such as foreign technical journals, patents, and equipment catalogs, to support facility and infrastructure characterization. MEP Systems Knowledge: Strong multidisciplinary understanding of Mechanical, Electrical, and Plumbing (MEP) system design, integration, and operational functionality within complex industrial or military facilities, including specialized containment, filtration, and backup power systems.
Principal Cloud Engineer Meso Scale DiscoveryPrincipal Cloud EngineerAll, MD$116,600–$177,800 / yearPartner with Cybersecurity on cloud security engineering: IAM, KMS encryption, secrets management, GuardDuty, Security Hub, AWS Config, vulnerability management, and SIEM (SIEMonster/Wazuh) integration; lead remediation of cloud security findings. Strong cloud security engineering knowledge: IAM design at scale, KMS and secrets management, GuardDuty/Security Hub/AWS Config, vulnerability management, and integration with enterprise SIEM platforms (Wazuh, Splunk, Sentinel, or comparable).
Principal DevOps Engineer LeidosPrincipal DevOps EngineerBethesda, Maryland$131,300–$237,350 / yearAdditionally, this role will help automate and streamline operations and processes; as well as build and maintain tools for deployment, monitoring and operations, and troubleshoot and resolve issues in dev, test, and production environments. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.