Unix/Linux Administrator System OneUnix/Linux AdministratorWashington, DC$150,000 / hourDesign and maintain the enterprise patch and configuration management architecture (Red Hat Satellite, Ansible or Ansible Automation Platform), converting manual administrative work into automated, repeatable, version-controlled workflows. Author and maintain security hardening baselines aligned to CIS Benchmarks and applicable DISA STIGs; own vulnerability scan remediation and support FISMA and NIST SP 800-53 control implementation, POA&M closure, and audit evidence.
Principal Software Engineer, SIEM Ruby/Rails Huntress Labs IncPrincipal Software Engineer, SIEM Ruby/RailsDCRemoteAs a Principal Software Engineer at Huntress, you will be responsible for leading a feature delivery team in the design, development, and high-quality release of software features for the Huntress SIEM Platform that provides for automated detection and human-powered threat hunting. Collaborate closely with the team engineering manager, product manager, security research, platform, and architect on strategic initiatives and technical designs.
New Glenn - Principal Software Engineer Blue OriginNew Glenn - Principal Software EngineerWashingtonand/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. Required for Certain Job Profiles: Drivers who operate Commercial Motor Vehicles with a Gross Vehicle Weight (GVW), Gross Vehicle Weight Rating (GVWR) or combination of power unit and trailer that meets or exceeds 10,001 lbs.
Principal Software Engineer NVR, Inc.Principal Software EngineerReston, VA$175,000–$185,000 / yearAs a Principal Software Engineer, you will serve as a senior individual contributor and technical leader responsible for solving complex technology challenges, shaping solution architecture, and helping teams deliver high-quality enterprise software. Join NVR Technology and help shape the technical direction of enterprise solutions while working collaboratively with engineering teams, business partners, and technology leaders across the organization.
Principal Software Engineer Cubic CorpPrincipal Software EngineerAshburn, VACompany Details: When you join Cubic, you become part of a company that creates and delivers technology solutions in transportation to make people's lives easier by simplifying their daily journeys, and defense capabilities to help promote mission success and safety for those who serve their nation. Four-year college degree in computer engineering or other related technical discipline, plus a minimum of eight years of related experience or a master's degree with at least six years of related experience.
Principal Security Software Engineer (Storage) Hewlett Packard EnterprisePrincipal Security Software Engineer (Storage)Reston, ColoradoPlease note that Hewlett Packard Enterprise (HPE), its direct and indirect subsidiaries and affiliated companies, and its authorized recruitment agencies/vendors will never charge a candidate a registration fee, hiring fee, or any other fee in connection with its recruitment and hiring process. We help companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive in today’s complex world.
Senior Principal Cloud Engineer E-Infosol LLCSenior Principal Cloud EngineerChantilly, VAThey are comfortable engaging executives and stakeholders, but their primary value comes from hands-on engineering leadership, sound architectural judgment, and the ability to mentor teams through complex cloud delivery challenges. The Senior Principal Cloud Engineer leads by building-developing reference architectures, infrastructure-as-code patterns, deployment pipelines, operational tooling, and production-ready solutions that enable customers to achieve mission and business objectives.
Principal Software Engineer The Josef GroupPrincipal Software EngineerColumbia, MarylandDesign and code new software or modify existing software to add new features, with expertise in Java and related development frameworks. Develop simple data queries for existing or proposed databases or data repositories (e.g., SQL, NoSQL).
Principal Security Engineer Fannie Mae CorpPrincipal Security EngineerReston, VADeep 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 Engineer, GIS Niyam ITPrincipal Engineer, GISFairfax, VAThis individual will define technical strategy and reference architecture for our GIS solution accelerators (GeoCube, SPHERE, RisQ), serve as lead Solution Architect on GIS-focused proposals and captures, and represent Niyam externally as a recognized geospatial thought leader through technical publications and conference speaking. The role combines deep hands-on delivery across active federal contracts with enterprise-level influence on Niyams geospatial technical direction and growth strategy, and requires the ability to obtain a Top Secret clearance to support Niyams continued expansion into DoD and Intelligence Community work.
Sr. Principal Software Engineer Clarity Innovations LLCSr. Principal Software EngineerSpringfield, VA$161,000–$362,000 / yearClarity Innovations is a trusted national security partner, dedicated to safeguarding our nation's interests and delivering innovative solutions that empower the Intelligence Community (IC) and Department of Defense (DoD) to transform data into actionable intelligence, ensuring mission success in an evolving world. We are committed to delivering cutting-edge tools and capabilities that address the most complex national security challenges, empowering our partners to stay ahead of emerging threats and ensuring the success of their critical missions.
Principal Software Engineer, AI Agents & Generative AI VantorPrincipal Software Engineer, AI Agents & Generative AIHerndon, VirginiaLeverages AI for team velocity and upskilling, including using AI-assisted development heavily, prototyping quickly, automating repetitive engineering tasks and moving faster than traditional SWE teams. We are an AI-native, agentic intelligence platform built from the ground up to operate at planetary scale – transforming vast streams of geospatial data into predictive signals that matter.
Principal Application Software Engineer Oracle CorpPrincipal Application Software EngineerReston, VA$99,600–$209,500 / year11 years of software development experience; or bachelor''s degree in a relevant technical field and 7 years of software development experience; or master''s degree in a relevant technical field and 5 years of software development experience; or doctorate in a relevant technical field and 3 years of software development experience. This role is a senior technical contributor who leads complex design and implementation work, guides engineers, improves application development practices, and resolves complex production and integration issues across distributed systems.
Ground Station Software Engineer (Staff to Senior Staff) Redwire Defense TechGround Station Software Engineer (Staff to Senior Staff)Chantilly, Virginia$148,000–$215,000 / yearYour code will enable users to monitor health and status of the aircraft and manage vehicle flight paths to meet their mission objectives while balancing aircraft performance constraints, airspace constraints, dynamic weather conditions, datalink limitations, threat avoidance, and coordination with external entities. Coordinate with operational users and the flight test team to respond to emerging operator needs and identify opportunities to expand the capabilities of the GCS software to reduce operator workload, increase mission success, and maximize flight safety.
Principal Software Engineer - 90402969 National Railroad Passenger CorpPrincipal Software Engineer - 90402969Washington, DC$124,600–$161,352 / hourOur 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. Amtrak may offer additional incentive and pay programs to recognize and reward our employees, including a short-term incentive bonus based upon factors such as individual and company performance that is commensurate with the level of the position and/or long-term incentive plan compensation.
Principal Automation Systems Engineer, NA Vantage Data CentersPrincipal Automation Systems Engineer, NASterling, VAThis role is expected to solve high-complexity automation challenges, provide direction for critical design decisions, mentor engineers and integration partners, and strengthen the quality, reliability, maintainability, and scalability of automation solutions used across both new builds and production environments. Developing 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.
Principal Software Engineer BigBear.aiPrincipal Software EngineerColumbia, MDEngineer 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. BigBear.ai is a leading provider of AI-powered decision intelligence solutions for national security, supply chain management, and digital identity.
Systems Engineer - EO/IR Northrop Grumman CorpSystems Engineer - EO/IRVA$114,000–$171,000 / yearThe above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate''s experience, education, skills and current market conditions. Requires an active Top-Secret/Sensitive Compartmented Information (SCI) clearance at time of application, current and within scope, with an ability to obtain and maintain Special Access Program (SAP) approval within a reasonable period of time.
Principal Applied Scientist - TS/SCI VantorPrincipal Applied Scientist - TS/SCIHerndon, VirginiaWorking closely with data scientists, machine learning engineers, software developers, and operational subject matter experts, the Principal Applied Scientist is responsible for developing high-fidelity models, validating scientific assumptions, assessing uncertainty, and ensuring that analytical outputs accurately characterize UTS risks and mitigation strategies. This individual combines expertise in computational modeling, applied mathematics, physics, and data science to ensure that machine learning models, agent-based simulations, and analytical frameworks accurately represent real-world phenomena and produce scientifically defensible, operationally relevant results.
NewPrincipal Software Engineer Kastle SystemsPrincipal Software EngineerFalls Church, VAWe are looking for an experienced Principal Software Engineer who will be responsible for developing and maintaining our flagship product assets. • Secure our software by addressing any vulnerabilities and by writing high-performing, scalable, and secure software to meet customer demands.