Proposal Writer Principal Science Applications International CorpProposal Writer PrincipalChantilly, VA$120,001–$160,000 / yearKnowledge of infrastructure modernization, applications/software development and sustainment, cloud solutions, warfighter solutions, and agile methodologies for defense, civilian, space, and National security sectors of the federal government. You will provide full lifecycle, Federal proposal support, from content planning, template development, and writing and editing key sections (resumes, past performance, and narrative volumes), through submission.
Principal AI Engineer, Special Programs Space Exploration Technologies CorpPrincipal AI Engineer, Special ProgramsWashington, DC$220,000–$350,000 / yearITAR REQUIREMENTS: To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. You may also be eligible for long-term incentives, in the form of company stock, stock options, or long-term cash awards, as well as potential discretionary bonuses and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan.
Principal Electrical Systems Engineer - Electro-Optical Systems Fibertek IncPrincipal Electrical Systems Engineer - Electro-Optical SystemsHerndon, VAThis position is ideal for an experienced engineer who enjoys solving challenging technical problems, defining system architectures, mentoring engineers, and helping transition advanced research into operational aerospace systems. Fibertek is seeking a Principal Electrical Systems Engineer to join our Herndon, VA team and lead the development of advanced electro-optical and laser-based systems supporting NASA, DoD, and commercial space missions.
Principal Software Engineer / Tech Lead Leidos Holdings IncPrincipal Software Engineer / Tech LeadArlington, VA$131,300–$237,350 / yearImplement software release version control, provide release management support throughout a software product's life cycle (initial software development through promotion to Test, QA and Production Environments), ensuring the consistency and reliability of software builds. This effort is building a modern Secure Web Service (SWS) operation on a cutting‑edge, highly automated platform designed to support a rapidly expanding customer base.
Principal, Subcontracts (Supply Chain Advisor) L3Harris Technologies IncPrincipal, Subcontracts (Supply Chain Advisor)Chantilly, VAThe role will also advise on novations/assignments, software licensing for Commercial and Free and Open-Source Software, basic intellectual property provisions, teaming agreements and other collaborative agreements, proprietary information agreements, and other agreement types. This role provides advisory support to ensure appropriate escalation of issues, improve the quality and consistency of submissions to OGC, and reduce unnecessary legal involvement where matters can be resolved within Supply Chain.
Principal Information Systems Security Engineer Leidos Holdings IncPrincipal Information Systems Security EngineerLinthicum, MD$154,050–$278,475 / yearAs a Principal Information Security Systems Engineer (ISSE) you will join a small team of security engineers providing Information Assurance (IA) Architecture Analysis and Security Engineering Support for the implementation and fielding of the National Leadership Command Capability in support of Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications. Bachelor of Science degree from an accredited university ideally in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 20 years of experience as an Information Systems Security Engineer (ISSE) or System Engineer on programs and/or contracts with the customer space.
Senior Principal, Management Consulting Publicis Groupe SASenior Principal, Management ConsultingArlington, VA$155,000–$303,000 / yearResponsibilities Your Impact: Lead large teams to deliver value accretive business strategy and transformation Actively participate in the entrepreneurial construction of the strategy consulting team: support recruiting process, define ways of working, contribute thought leadership Lead the development of proposals & contribute to generating demand Qualifications Over 10 years of Strategy and/or Management Consulting experience within a global major consulting firm Prior experience of large-scale transformations within corporate strategy at a global scale and reach Skilled at building senior relationships and delivering high impact work for your clients Team player, driven by business value creation Excellent written, verbal, numerical, and presentation skills Thorough consulting skills and experience consulting to C-level clients Deep problem solving intrinsics and analytics skills Appreciation for Agile ways of working Interest and experience in technology and using technology to strengthen business value Openness to travel and work on client site in order to deliver the first-class services we pride ourselves in Additional information Pay Range: $155,000 - $303,000. United by our core values and our purpose of helping people thrive in the brave pursuit of next, our 20,000+ people in 53 offices around the world combine experience across technology, data sciences, consulting and customer obsession to accelerate our clients' businesses through designing the products and services their customers truly value.
Principal Structural Engineer Microsoft CorpPrincipal Structural EngineerWashington D.C., DC$142,800–$274,800 / yearDoctorate in Civil Engineering, Structural Engineering, or related field, AND 5+ years of technical engineering experience OR Masters Degree in Civil Engineering, Structural Engineering, or related field AND 8+ years technical engineering experience OR Bachelors Degree in Civil Engineering, Structural Engineering, or related field AND 12+ years technical engineering experience OR equivalent experience. Required Qualifications: Masters degree in Civil Engineering or related field AND 7+ years technical engineering experience OR Bachelors degree in Civil Engineering or related field AND 8+ years technical engineering experience OR equivalent experience.
Principal Geotechnical Engineer Microsoft CorpPrincipal Geotechnical EngineerWashington D.C., DC$142,800–$274,800 / yearDoctorate in Civil Engineering, Geotechnical Engineering, or related field AND 5+ years of technical engineering experience OR Masters Degree in Civil Engineering, Geotechnical Engineering, or related field AND 8+ years technical engineering experience OR Bachelors Degree in Civil Engineering, Geotechnical Engineering, or related field AND 12+ years technical engineering experience OR equivalent experience. Masters degree in Geotechnical Engineering or related field AND 7+ years technical engineering experience OR Bachelors degree in Civil Engineering, Geotechnical Engineering or related field AND 8+ years technical engineering experience OR equivalent experience.
NewAI Change Manager Principal Slalom IncAI Change Manager PrincipalWashington, DCRemote$130,000–$195,000 / yearOur Change Acceleration discipline, which sits in our Workforce Modernization sub-capability, helps organizations move successfully through the full range of transformation they face - from technology implementations and operating model redesigns to workforce transformation, and AI-enabled ways of working. Core skills include change leadership, executive advisory, workforce and digital transformation, business development, capability building, leadership coaching, learning strategy, human-centered design, value realization, and strategic facilitation.
Senior Principal Product Manager, Atlassian Government Cloud Atlassian CorpSenior Principal Product Manager, Atlassian Government CloudWashington, DCAs the Senior Principal Product Manager for Atlassian Government Cloud - Restricted Environments, you will own the product vision, strategy, and delivery of Atlassian's forthcoming cloud offerings built to support the mission needs of the U.S. Intelligence Community, Department of Defense, and their mission partners. You will also play an important role across the broader Atlassian Government Cloud organization by sharing domain expertise, mentoring other product managers, and helping raise the team's collective capability in regulated and restricted cloud delivery.
Principal Group Software Engineering Manager Microsoft CorpPrincipal Group Software Engineering ManagerReston, VA$165,600–$296,400 / yearThere is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $220,800 - $331,200 per year. In July 2026, Microsoft introduced Project Perception, an agentic security system that brings together coordinated red, blue, and green AI agents to help organizations defend against cyber threats at machine speed.
Principal Substation Electrical Engineer - Regional Datacenter Engineering Microsoft CorpPrincipal Substation Electrical Engineer - Regional Datacenter EngineeringWashington D.C., DC$142,800–$274,800 / yearDoctorate in Electrical Engineering, Computer Engineering, or related field AND 5+ years technical engineering experience OR Masters Degree in Electrical Engineering, Computer Engineering, or related field AND 8+ years technical engineering experience OR Bachelors Degree in Electrical Engineering, Computer Engineering, or related field AND 12+ years technical engineering experience OR equivalent experience. Doctorate in Electrical Engineering, Computer Engineering, or related field AND 3+ years technical engineering experience OR Masters Degree in Electrical Engineering, Computer Engineering, or related field AND 6+ years technical engineering experience OR Bachelors Degree in Electrical Engineering, Computer Engineering, or related field AND 8+ years technical engineering experience OR equivalent experience.
Associate Principal Analyst, Surveillance and Market Intelligence Financial Industry Regulatory Authority IncAssociate Principal Analyst, Surveillance and Market IntelligenceRockville, MD$83,900–$172,800 / yearBoston, MA: $83,900.00 - $172,800.00 Chicago, IL: $92,400.00 - $165,300.00 Denver, CO: $83,900.00 - $150,300.00 Jericho, NY: $83,900.00 - $180,400.00 Jersey City, NJ: $100,800.00 - $180,400.00 New York, NY: $100,800.00 - $180,400.00 Rockville, MD: $96,600.00 - $172,800.00 Tysons, VA: $96,600.00 - $172,800.00 Washington, DC: $96,600.00 - $172,800.00 Woodbridge, NJ: $92,400.00 - $180,400.00 . FINRA 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.
Principal Value Advisor, Value Management Office Atlassian CorpPrincipal Value Advisor, Value Management OfficeWashington DC, DC$224,100–$292,575 / yearExtensive experience in value management and proven track record of leading complex, cross-functional engagements across a broad range of customer industries. The Value Management Office exists to infuse all interactions and engagements towards the fulfillment of the customers' strategic business needs with joint ownership of their long term success.
Principal Mechanical Engineer SME - TS/SCI Polygraph Required Leidos Holdings IncPrincipal Mechanical Engineer SME - TS/SCI Polygraph RequiredReston, VA$154,050–$278,475 / yearMEP Systems Expertise: Strong multidisciplinary understanding of Mechanical, Electrical, and Plumbing (MEP) system design, integration, and operational functionality within complex industrial or military facilities, including specialized containment systems, filtration systems, and backup power infrastructure. The successful candidate will leverage extensive engineering expertise to analyze facility designs, spatial layouts, operational workflows, and supporting infrastructure to determine functional capabilities and mission relevance.
Principal Services Solutions Manager - Federal Snowflake IncPrincipal Services Solutions Manager - FederalDC$184,000–$241,500 / yearDevelop expertise within their aligned market through working closely with other Practice Directors, Sales teams, and Global Industry Leaders to understand transformational specific use cases and through external research on the current business and technology landscape for your customer base. Build strong cross-functional relationships within Snowflake GTM teams (legal, deal desk, account teams, sales, PS&T leadership - including workload services - and partner team).
Principal Software Technical Lead Trident Systems IncPrincipal Software Technical LeadFairfax, VA$120,000–$222,000 / yearOur three operating units: Space Electronic Systems (SES), Integrated C4ISR Systems (ICS) and Optical Precision Systems (OPS), develop within the agile framework which enables us to produce proven, purpose-built systems that solve our customers' mission critical challenges across space, air, land, and sea. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information.
Principal, Program Management Excellence- Engineering L3Harris Technologies IncPrincipal, Program Management Excellence- EngineeringHerndon, VA$153,000–$284,000 / yearTo help spot these scams, remember that during our formal recruitment process, L3Harris will NOT (1) ask you for money; (2) offer to send you a check before doing any work; (3) require you to provide sensitive personal information early in the process or sensitive information about your previous employer; (4) send you emails from free commercial services (e.g. The candidate must be able to lead cross-functionally with the other members of the Maritime PMX staff, Engineering functional partners and the sector's IPTs to drive predictable program performance.
Acquisition Strategy & Documentation Principal Addx CorpAcquisition Strategy & Documentation PrincipalWashington, DCThe ideal candidate will have a strong background in Department of Defense (DoD) Acquisition Air Force (AAF) programs, with expertise in program planning, ACAT III program management, and the development of Request for Proposal (RFP) documents. Collaborate with cross-functional teams including contracting, legal, engineering, and program management to ensure alignment and clarity in acquisition documentation.