Principal AI Software Engineer TS/SCI w/Poly AmentumPrincipal AI Software Engineer TS/SCI w/PolySavage, MarylandThe 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. Proficient in current AI/ML technologies such as classification, clustering, collaborative filtering, search, and retrieval using techniques such as but not limited to deep neutral networks (DNN), recurrent neural networks (RNN), attention-based transformers, etc.
Principal Software Engineer TS/SCI w/Poly AmentumPrincipal Software Engineer TS/SCI w/PolySavage, MarylandDevelop 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. 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.
(USA) Principal, Systems and Infrastructure Engineer Walmart(USA) Principal, Systems and Infrastructure EngineerHerndon, VirginiaOption 1: Bachelor's degree in computer science, computer engineering, information systems, information technology, or related area and 5 years’experience in technology infrastructure engineering across areas such as compute, storage, network, mobility or virtualization-related technologies. About the team: The Enterprise Directory Services Core team manages Walmart’s multiple Active Directory forests, ensuring essential services like LDAP function securely and efficiently.
NewPrincipal Corporate Counsel: Trade Secrets, Copyrights, and AI in IP CiscoPrincipal Corporate Counsel: Trade Secrets, Copyrights, and AI in IPMclean, Virginia$205,600–$260,000 / yearThe applicable full salary ranges for this position, by specific state, are listed below: New York City Metro Area: $225,000.00 - $336,300.00 Non-Metro New York state & Washington state: $205,600.00 - $298,900.00 * For quota-based sales roles on Cisco’s sales plan, the ranges provided in this posting include base pay and sales target incentive compensation combined. That means working with various parts of legal, the business, and IT to: identify the best methodology and systems to classify our proprietary assets that deserve trade secret protection; detail the reasonable protective measures required to establish and defend that protection; and craft the legal and technical governance that makes the program defensible in litigation.
AP110 Principal Software Systems Engineer / Full-Stack Architect SupportAP110 Principal Software Systems Engineer / Full-Stack ArchitectGreenbelt, MarylandRemoteAP110 Principal Software Systems Engineer / Full-Stack Architect Program: NASA GSFC Astrophysics Science Division: Guest Observer Facility (GOF) Modernization Project Location: Remote Position, US-based only (occasional travel to NASA Goddard Space Flight Center, Greenbelt, MD will be required for badging and review milestones) Employment Type: Full-time contractor position Level: Senior / Principal (~10+ years of relevant experience) Eligibility: Must be a US Citizen or Lawful Permanent Resident (LPR); having resided in the US for the past 3 consecutive years and able to meet the access requirements for a system handling Controlled Unclassified Information (CUI) and Personally Identifiable Information (PII). Defining Success: By the end of 2026, you deliver a credible, demonstrable prototype that unifies key parts of the proposal–review–grant workflow for an initial set of missions, earns buy-in from participating mission stakeholders, and establishes the architecture, security posture, and team practices needed to iterate quickly toward a production system.
Principal Security Engineer Fannie MaePrincipal Security EngineerReston, VirginiaDeep knowledge of cloud security architecture, IAM, networking, encryption, logging, monitoring, workload protection, governance, and enterprise network security, including segmentation, firewalls, proxies, VPNs, DNS security, secure web gateways, IPS, load balancing, ZTNA, and SASE. Professional Certifications: Relevant industry certifications such as CISSP, CCSP, PCNSE, AWS Certified Security – Specialty, AWS Certified Advanced Networking – Specialty, Google Professional Cloud Security Engineer, Microsoft Certified: Azure Security Engineer Associate, GIAC certifications, or equivalent credentials.
Principal Product Manager (Content Authoring, Delivery & CMS) Great MindsPrincipal Product Manager (Content Authoring, Delivery & CMS)Dc, District of ColumbiaRemoteCMS and Content Architecture: Initiate and sometimes facilitate product direction conversations for the CMS, including content models, workflows, permissions, versioning, and publishing—working with but deferring to expert partners in Product Design and Engineering. Reporting to the Director, Digital Product Management, the Principal Product Manager (Content Authoring, Delivery & CMS) will lead discovery and execution for our content authoring tools, end user delivery experiences, and content management system (CMS).
NewUC Consulting Engineer - Principal Amentum Services IncUC Consulting Engineer - PrincipalArlington, VA$260,000–$290,000 / yearIn support of a challenging, critical, and rewarding program that provides integrated voice, video, and data services throughout the Information Technology lifecycle, Amentum is seeking a UC Consulting Engineer - Principal to join our dynamic team of IT professionals dedicated to fostering a positive and collaborative work environment. Essential Responsibilities: The duties and responsibilities of the UC Consulting Engineer - Principal include, but are not limited to the following: Serve as the subject-matter expert in Unified Communications (UC) and collaboration technologies, specializing in platforms such as Cisco Unified Communications Manager (CUCM), Cisco Unity Connection, and Cisco Webex.
Radio Frequency Software Engineer Principal - 1660 Global InfoTek, Inc.Radio Frequency Software Engineer Principal - 1660Reston, VARemote$100,000–$240,000Certifications in software engineering, computer science, or related fields (e.g., Certified Software Development Professional (CSDP); Certified Secure Software Lifecycle Professional (CSSLP); Red Hat Certified Engineer (RHCE); C++ Certified Professional Programmer (CPP); Professional Software Developer Certification (PSD); etc.). The candidate will lead a small team of senior software engineers, coordinate closely with the program technical lead and AI/ML researchers to drive Cyber Operations software from prototype to production-quality, resource-efficient components deployable on tactical edge hardware.
Principal Associate, International Risk, Strategy & Technology Enablement- Network Risk & Advisory Capital OnePrincipal Associate, International Risk, Strategy & Technology Enablement- Network Risk & AdvisoryMcLean, VirginiaAs a Principal Associate on the International Risk Team, you will serve as a key orchestrator for our International Risk Management Strategy, providing the governance structure that keeps the team and partner networks aligned to a single unified vision. Candidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate’s offer letter.
Principal Associate, Leadership and Enterprise Experiences Facilitator Capital OnePrincipal Associate, Leadership and Enterprise Experiences FacilitatorMcLean, VirginiaCandidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate’s offer letter. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation, please contact Capital One Recruiting at 1-800-304-9102 or via email at RecruitingAccommodation@capitalone.com.
Community Finance (CF) Loan and Equity Administration Servicing -Principal Associate Capital OneCommunity Finance (CF) Loan and Equity Administration Servicing -Principal AssociateMcLean, VirginiaThe Loan Equity Administration team is responsible for the daily activities of the CF Loan and Equity operations and the Community Impact & Investment (CII) Teams (Loan Closing, Loan Booking, Construction Funding, Perm Loans and Equity Administration to ensure the accuracy of loan and LIHTC equity assets from the closing process through payoff and working with several internal partners to ensure a scalable and well-managed business. Community Finance (CF) Loan and Equity Administration Servicing -Principal Associate Global Enterprise Affairs works with many external and internal stakeholders to envision and create a world of greater socioeconomic opportunity through advocating for an inclusive society, building thriving communities, and creating financial tools that enrich lives.
NewPrincipal Coordinator- Event Operations Team Capital OnePrincipal Coordinator- Event Operations TeamMcLean, VirginiaCandidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate’s offer letter. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation, please contact Capital One Recruiting at 1-800-304-9102 or via email at RecruitingAccommodation@capitalone.com.
Principal Associate, Cyber Risk & Analysis Capital OnePrincipal Associate, Cyber Risk & AnalysisMcLean, VirginiaDesign, build, and maintain the multi-agent AI profiling platform, including agent logic, orchestration, prompt pipelines, confidence scoring, and QA thresholds to ensure continuous and accurate threat profile generation across all enrolled assets. Build and evolve a portal and API capabilities, including asset search, delta views, compliance gap exports, delta subscriptions, and system integrations, to meet consuming team needs without requiring manual fulfillment.
Principal Process Manager (Documentation Writing) Capital OnePrincipal Process Manager (Documentation Writing)McLean, VirginiaCandidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate’s offer letter. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation, please contact Capital One Recruiting at 1-800-304-9102 or via email at RecruitingAccommodation@capitalone.com.
Principal Associate, Underwriting, Portfolio, and Loan Management Capital OnePrincipal Associate, Underwriting, Portfolio, and Loan ManagementMcLean, VirginiaPrincipal Associate, Underwriting, Portfolio, and Loan Management Global Enterprise Affairs works with many external and internal stakeholders to envision and create a world of greater socioeconomic opportunity through advocating for an inclusive society, building thriving communities, and creating financial tools that enrich lives. You are responsible for the ongoing credit administration and risk management of a diverse portfolio, your portfolio may include a mix of construction debt, permanent debt, and Low Income Housing Tax Credit (LIHTC) equity investments.
Principal FOIA Analyst Essnova Solutions, Inc.Principal FOIA AnalystWashington, District of ColumbiaPreferred Qualifications: Hands-on experience with FOIA processing and redaction tools (FOIAXpress, Adobe Acrobat Pro, Relativity, eDiscovery platforms, or SharePoint). Essnova Solutions, Inc. is an award-winning SBA 8(a) and HUBZone-certified small business specializing in technology solutions and professional services for government and commercial clients.
Principal Engineer Ion Storage SystemsPrincipal EngineerBeltsville, MDFull timeResponsibilities: Work collaboratively with the team to support the existing prototype line, identifying the key levers to drive optimal process reliability, quality, and uptimeLead root-cause investigations for difficult or ambiguous equipment and process failures, and drive corrective/preventive actions to closure. As a Principal Engineer, you'll take ownership of significant workstreams - leading equipment builds, troubleshooting efforts, and process improvements end-to-end - while mentoring other engineers and raising the technical bar across the team.
NewPrincipal Systems Engineer, Digital Engineering Solutions Modern Government SolutionsPrincipal Systems Engineer, Digital Engineering SolutionsSterling, VAFull timeTITLE: Principal Systems Engineer, Digital Engineering SolutionsLOCATION: Sterling, VA (Relocation assistance considered)CLEARANCE REQUIRED: Active TS/SCI with CI PolyEMPLOYMENT TYPE: Part-Time / As Needed, Onsite POSITION SUMMARYModern Government Solutions (MGS) is seeking a Principal Systems Engineer, Digital Engineering Solutions to lead the architecture, deployment, and sustainment of enterprise engineering platform environments in support of national security missions. Bachelor's degree in Systems Engineering, Computer Science, Computer Engineering, Software Engineering, Information Technology, Electrical Engineering, Mathematics, Physics, or a related field.16+ years of experience architecting, deploying, and sustaining enterprise engineering platforms and IT infrastructure within cloud-hosted environments.
NewPrincipal Systems Engineer (API Gateway) - TS/SCI w CI Poly Modern Government SolutionsPrincipal Systems Engineer (API Gateway) - TS/SCI w CI PolySterling, VAFull timeBachelor's degree in Systems Engineering, Computer Science, Computer Engineering, Software Engineering, Information Technology, Electrical Engineering, Mathematics, Physics, or a related field.16+ years of experience designing, integrating, and supporting enterprise systems, cloud architectures, and API-driven solutions within complex mission environments.5+ years of experience implementing and administering API gateway technologies in cloud-based architectures; Experience designing secure APIs and enterprise integration solutions utilizing REST, GraphQL, event-driven architectures, message queues, streaming platforms, or ETL pipelines. TITLE: Principal Systems Engineer (API Gateway)LOCATION: Sterling, VA (Relocation assistance considered)CLEARANCE REQUIRED: Active TS/SCI with CI PolyEMPLOYMENT TYPE: Full-time, Onsite POSITION SUMMARYModern Government Solutions (MGS) is seeking a Principal Systems Engineer to architect, integrate, and secure mission-critical API ecosystems supporting next-generation national security capabilities.