Principal Software Engineer TS/SCI w/Poly Amentum Services IncPrincipal Software Engineer TS/SCI w/PolyFort Meade, MD$200,000–$255,000 / yearMinimum Requirements (Knowledge, Skills, and Abilities): 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. 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 AI Software Engineer TS/SCI w/Poly Amentum Services IncPrincipal AI Software Engineer TS/SCI w/PolyFort Meade, MD$200,000–$255,000 / yearMinimum Requirements (Knowledge, Skills, and Abilities): 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. 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.
Assistant Principal Baltimore City Public SchoolsAssistant PrincipalBaltimore, MDThis could include dean, instructional coach, department chair, grade level chair/grade team leader, educational associate, academic content liaison, or lead teacher experience in an education setting or a full-time people management position in another professional setting. Assists in providing leadership to the School Family Council and facilitates ongoing information sharing as well as opportunities for parent and community members to provide input concerning school operations and resource allocation.
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).
Principal Technical Product Manager, Content Platform WP Company LLCPrincipal Technical Product Manager, Content PlatformWashington, DC$131,500–$219,100 / yearTrack record of operating as a fractional PM across multiple empowered pods at once, framing each pod's work as a sequence of small, hypothesis-driven bets that compound into a larger thesis-not as long, fixed-scope programs with distant delivery dates. Daily, hands-on use of AI-powered tools (LLMs, coding assistants, research agents, etc.) to materially accelerate your own product work-PRDs, research synthesis, competitive analysis, data exploration, and rapid prototyping.
Principal Product Manager- Conversational AI Hopper IncPrincipal Product Manager- Conversational AIWashington D.C., DCRemoteHTS Assist is Hoppers agentic AI assistant for travel, resolving real customer issues like flight changes, cancellations, refunds, and bookings over chat and voice for some of the largest travel brands and enterprises in the world. By leveraging massive amounts of data and advanced machine learning algorithms, Hopper combines its world-class travel agency offering with proprietary fintech products to bring transparency, flexibility and savings to travelers globally.
Principal Solutions Architect (Databricks) Blue Orange Digital LLCPrincipal Solutions Architect (Databricks)Washington, DCYou can whiteboard a multi-workspace Unity Catalog governance model, explain when Photon earns its cost, diagnose a skewed join from a Spark UI screenshot, and reason about Delta Lake file layout and liquid clustering under real workloads. Hands-on command of Spark, Delta Lake, Unity Catalog, Databricks Workflows, Delta Live Tables, MLflow, and Mosaic AI, plus fluency in at least one major cloud (AWS, Azure, or GCP) and infrastructure as code.
Principal Program Cost Control Analyst Northrop Grumman CorpPrincipal Program Cost Control Analystlinthicum, MD$89,900–$134,900 / yearThe PCA will perform analysis and prepare reports in order to ensure that contracts are within negotiated and agreed-upon parameters and government cost control guidelines, including maintaining accurate records of expenditures, directing preparation of expenditure projections, and submitting timely requests for additional funding to the government. The PCA will support audits and reviews as requested by programs, customers, and company management, support Annual Operating Plan, Resource Plan, and Long Range Strategic Plan activity, and prepare financial inputs to internal reports and presentations (IPRS, Dashboards, BARs, Etc.).
Sr. Principal Threat Intelligence Engineer- Remote or Hybrid in MN or DC UnitedHealth Group IncSr. Principal Threat Intelligence Engineer- Remote or Hybrid in MN or DCWashington D.C., DCRemote$134,600–$230,800 / yearThe fraudulent LinkedIn messages and emails, which do not originate from any Executives LinkedIn account or of UnitedHealth Group's email domains, or those of any of its operating divisions, supposedly conducts an interview via a Zoom meeting, offers a work from home job at Optum, emails an application, sends a fake check by next day delivery through USPS and asks recipients to pay a vendor a large dollar amount. The Senior Principal Threat Intelligence Engineer is expected to conceptualize, guide, and execute the delivery of technical intelligence solutions to CTI, SOC, Threat Detection, and Threat Hunting teams that accelerate the processing and dissemination of intelligence, increase speed of detection, and enable rapid response.
Principal Threat Intelligence Engineer - Remote or Hybrid in MN or DC UnitedHealth Group IncPrincipal Threat Intelligence Engineer - Remote or Hybrid in MN or DCWashington D.C., DCRemote$112,700–$193,200 / yearThe fraudulent LinkedIn messages and emails, which do not originate from any Executives LinkedIn account or of UnitedHealth Group's email domains, or those of any of its operating divisions, supposedly conducts an interview via a Zoom meeting, offers a work from home job at Optum, emails an application, sends a fake check by next day delivery through USPS and asks recipients to pay a vendor a large dollar amount. The role focuses on ingesting, normalizing, and enriching threat intelligence information, integrating Threat Intelligence Platforms (TIPs) and intelligence sources with security tooling (e.g., SIEM, SOAR, EDR), and deploying automated intelligence-enabled detection and response workflows.
Principal Analyst - Technology Resilience Forrester Research IncPrincipal Analyst - Technology ResilienceWashington, DC$141,000–$229,000 / yearThe Principal Analyst delivers research that encompasses: 1) modern technology resilience practices, skills, and culture; 2) drive research on key platforms, vendors and trends in data resilience, object storage, and recovery related markets; 3) brings the right mix of both strategic and technical delivery experiences; and 4) fosters a culture of collaboration across our research, sales, product, and customer success teams. Deep understanding of the following concepts and industry best practices: site reliability engineering (SRE), National Incident Management System (NIMS), the National Response Framework (NRF), availability zones, ISO 22301, NIST SP 800-34, blameless retrospectives, CAST, fault injection, proactive and continuous testing, business impact analysis, immutability, and tabletop exercises.
Sr Principal Cloud Platform Architect - Remote National Railroad Passenger CorpSr Principal Cloud Platform Architect - RemoteWashington, DCRemote$149,400–$193,644 / hourMust have repeated experience successfully directing significantly complex architecture initiatives over $5 million, developing capabilities that typically involve different stakeholders, multiple lines of business, many solution varieties, highly regulated environments, business transformations at mass scale. 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.
Principal Analyst, Enterprise Architecture Forrester Research IncPrincipal Analyst, Enterprise ArchitectureWashington, DC$141,000–$229,000 / yearA Principal Analyst is expected to: Lead the Enterprise Solutions Architecture practice area, working across Forrester research teams, including the Technology Strategy and Executive Partner teams as well as Sales and Product to develop a complete research portfolio that drives customer delight and revenue. Job Requirements: At least 10 years of experience in a mix of roles as a director-level and above practitioner, enterprise architect, principal sales engineer, principal solutions architect, managing consultant, Director/Manager of Sales Engineering, or research analyst in an industry vertical or technology services.
Principal Asset Management Data & Analytics Cbre ValuationPrincipal Asset Management Data & AnalyticsWashington, D.C., DCAtlanta - Georgia - United States of America, Chicago - Illinois - United States of America, Dallas - Texas - United States of America, Denver - Colorado - United States of America, Los Angeles - California - United States of America, New York - New York - United States of America, Seattle - Washington - United States of America, Tampa - Florida - United States of America, Washington, D.C. - District of Columbia - United States of America. CBRE serves clients through four business segments: Advisory (leasing, sales, debt origination, mortgage serving, valuations); Building Operations & Experience (facilities management, property management, flex space & experience); Project Management (program management, project management, cost consulting); Real Estate Investments (investment management, development).
Principal Designer (R5250) Shield AIPrincipal Designer (R5250)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.
Private Equity Principal Selby Jennings LtdPrivate Equity PrincipalWashington, DCThe Private Equity Principal will be deeply involved in transaction execution, portfolio oversight, strategic decision-making, and relationship management while serving as a key resource for junior investment professionals. About the Firm: We are currently partnered with a leading Private Equity platform out of Washington, DC that is seeking a Private Equity Principal to join it's deal team.
Special Projects Group Principal Geotechnical Engineer - Transportation Engineering Consulting Services LtdSpecial Projects Group Principal Geotechnical Engineer - TransportationHanover, MD$125,000–$200,000 / yearECS is currently ranked #60 in Engineering News-Record's Top 500 Design Firms (April 2026), #148 in Engineering News-Record's Top 200 Environmental Firms (October 2025) and #50 in Zweig Group's Hot Firm List (May 2025). Attend weekly department managers meeting to discuss overall goals and learn information that will need to be passed down to Project and Senior Project Managers.
Sr. Principal Voice Engineer Northrop Grumman CorpSr. Principal Voice Engineerlinthicum, MD$129,300–$193,900 / yearBasic Qualifications: Master''s degree with 6 years of relevant experience, or a Bachelor''s degree with 8 years of relevant experience, or an Associate''s degree with 10 years of relevant experience; a High School diploma (or equivalent) with 12 years of relevant experience may be considered in lieu of a completed degree. Must have experience with designing and maintaining LAN/WAN based networks, managing routing protocols on large LAN environments, and experience with Cisco hardware (routers, switches, and firewalls).
Principal Software Engineer Alarm.comPrincipal Software EngineerWashington, DC$200,000–$250,000 / yearOur comprehensive suite of solutions—including security, video surveillance, access control, active shooter detection, intelligent automation, energy management, and wellness—is delivered exclusively through a trusted network of thousands of professional service providers and commercial integrators across North America and worldwide. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies.
Principal / Senior Mission Engineering Systems Engineer Northrop GrummanPrincipal / Senior Mission Engineering Systems EngineerBaltimore, MD$108,800–$163,200 / yearWhat You Will Get to Do: As an integral part of the Modeling, Simulation and Analysis Section, you will apply MS&A techniques with a focus on Mission Engineering while accelerating the delivery of capabilities to our customers through either mission studies, system-of-system trades or performance analysis using credible modeling, simulation, experimentation, and analysis processes to assess system architectures that best deliver the effects, data, and capabilities demanded by tomorrow's missions. Basic Qualifications for Senior Principal Mission Engineering Systems Engineer: Bachelor's degree with 8 years of experience, a Master's degree with 6 years of experience or a PhD with 4 years of experience in Science, Technology, Engineering or Mathematics or related technical fields; an additional 4 years of experience may be considered in lieu of a degree.