99 Results for

Principal Jobs in Elliot, CT

Jobs

New!

Frederick, MD4 days ago

$180,000–$250,000 Per Year

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Reston, VA30+ days ago

This role sits at the intersection of advanced modeling, system architecture, and real-world network performance , with MATLAB as a core tool in shaping next-generation solutions. At TeleWorld Solutions , we design, optimize, and deliver high-performance wireless networks for leading operators and technology partners.

Falls Church, VA14 days ago

We 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.

Fairfax, VA24 days ago

Remote

The ideal candidate is a recognized expert in Optical Character Recognition (OCR), Natural Language Processing (NLP), Large Language Models (LLMs), and deep learning, with proven experience integrating these capabilities into end-to-end enterprise solutions that process and extract value from large volumes of unstructured data. As a Principal Engineer, you will drive innovation, guide architecture decisions, mentor engineering teams, and work closely with product, leadership, and customers to translate complex business challenges into robust AI/ML solutions.

Manassas, VA30+ days ago

Share by Email Share on LinkedIn Share on X (http://www.x.com/intent/post?url=https%3A%2F%2Fcareers.learningcaregroup.com%2Fsearch%2Fjobdetails%2Fx%2F3f975df4-f8fc-49af-b445-5971ca220efa%3Futm_campaign%3Dss_x) The Principal is responsible for all aspects of effective school operations, ensuring the safety of the children, supervising the school staff, and managing delivery of quality early education programming.

McLean, VA30+ days ago

$91,200–$136,800 Per Year

Bachelor’s degree from an accredited university with 8 years in Contracts, Subcontracts, or Procurement Administration, or related professional experience - OR - a Master's degree with 6 years in Contracts, Subcontracts, or Procurement Administration, or related professional experience: In lieu of degree High school diploma or equivalent with 12 years of relevant experience required. + Bachelor’s degree from an accredited university with 5 years in Contracts, Subcontracts, or Procurement Administration, or related professional experience - OR - a Master's degree with 3 years in Contracts, Subcontracts, or Procurement Administration, or related professional experience: In lieu of degree High school diploma or equivalent with 9 years of relevant experience required.

Manassas, VA30+ days ago

Electra.aero is seeking a Principal Flight Controls Engineer to serve as a senior technical authority and flight controls certification subject‑matter expert for the EL9 Ultra Short Takeoff and Landing aircraft. At Electra, we're pioneering sustainable aviation by developing hybrid-electric Ultra Short Takeoff and Landing aircraft designed to transform regional air mobility by making air travel more efficient, quieter, and environmentally friendly.

Manassas, VA18 days ago

Our Ultra Short technology unlocks thousands of new operating locations and enables what we call Direct Aviation: quiet, point-to-point regional travel that gets people from where they are to where they want to go, without the congestion of major airports or the noise of conventional aviation. As our Principal Manufacturing Engineer – Primary Structures, you'll take on one of the most consequential roles in the EL9 build: owning manufacturability and integration for major load-bearing structures - fuselage, wing, empennage, and primary structural assemblies.

Manassas, VA18 days ago

Embedded in our Integrated Product Development Team (IPDT), your focus will be on electrical and avionics systems installation, applying DFM and DFA principles to enable efficient, scalable final assembly operations - and ensuring production test processes are built in from day one. Our Ultra Short technology unlocks thousands of new operating locations and enables what we call Direct Aviation: quiet, point-to-point regional travel that gets people from where they are to where they want to go, without the congestion of major airports or the noise of conventional aviation.

Manassas, VA30+ days ago

This role will be responsible for the aircraftelectrical systems - including power distribution, energy storage, conversion, and system safety protections - ensuring reliable, certifiable, and high-performance operation across the full aircraft lifecycle. At Electra, we're pioneering sustainable aviation by developing hybrid-electric Ultra Short Takeoff and Landing aircraft designed to transform regional air mobility, by making air travel more efficient, quieter, and environmentally friendly.

Manassas, VA18 days ago

Our Ultra Short technology unlocks thousands of new operating locations and enables what we call Direct Aviation: quiet, point-to-point regional travel that gets people from where they are to where they want to go, without the congestion of major airports or the noise of conventional aviation. This is a hands-on leadership role - you'll mentor junior engineers, own the architecture of our simulation labs, and build the data management and automated test processes that engineering depends on to move the EL9 toward certification.

New!

Reston, VA6 days ago

$200,000–$275,000 Per Year

We are partnering with our client, Galaxia Technologies, to hire a Principal Data Engineer – Mission Data Pipelines (Reston, VA) to play a key role in advancing the Department of the Air Force’s Integrated Fires Command and Control (DIFC2) Program. Galaxia Technologies is seeking a Principal Data Engineer – Mission Data Pipelines to design, implement, and sustain robust mission data pipelines supporting the Department of the Air Force’s DIFC2 program and the Horizon initiative.

Germantown, MD30+ days ago

Job Summary: We are looking for a Principal Electrical Engineer with 12+ years’ experience in design and development of Application Specific Integrated Circuits (ASIC) and micro-controller based embedded systems, specifically for battery powered medical devices. Building system architecture for sensor interface and connectivity to wearable and mobile devices using technologies such as near field communication (NFC) and Bluetooth.

Herndon, VA30+ days ago

A Bachelor's degree and 9 years of relevant experience OR a Master's degree with 7 years of relevant experience OR a PhD with 4 years of relevant experience; An additional 4 years of experience may be considered in lieu of the degree requirement . o Help write and maintain scripts for process improvements (ex: stage/unstage builds, branch tag automation, automating variance corrections across networks).

Herndon, VA30+ days ago

For Senior Principal level: A Bachelor's degree with 9+ years of relevant experience; OR a Master's degree with 7+ years of relevant experience; OR a PhD with 4+ years of relevant experience an additional 4 years of experience may be considered in lieu of a degree requirement. For Staff level: A Bachelor's degree with 14+ years of relevant experience; OR a Master's degree with 12+ years of relevant experience; OR a PhD with 9+ years of relevant experience an additional 4 years of experience may be considered in lieu of a degree requirement.

Herndon, VA30+ days ago

Candidate will perform test-driven software engineering and development activities associated with designing, developing, maintaining, and enhancing analytic systems using an Agile DevSecOps model. Experienced front-end software engineer to develop services using modern techniques such as REST, JSON, Python, JavaScript Web UI frameworks (e.g., JQuery, Angular, React), and Docker.

Herndon, VA30+ days ago

Frederick, MD29 days ago

$144,800–$199,100 Per Year

Design and develop web-based applications and micro-services using both front-end and back-end technologies (full stack development), including but not limited to technical design, coding, and unit testing to generate high quality deliverables to achieve product release objectives. If hired, employee will be in an “at-will position” and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors.

Rockville, MD15 days ago

$165,000–$220,000 Per Year

7+ years of experience in the design, analysis, build, and test of space-rated metallic pressure vessels and related propulsion hardware, including: Familiarity with ANSI/AIAA S-080A, launch vehicle interfaces, and range safety requirements. About Protingent: Protingent is an Award-Winning provider of top-tier Engineering and IT talent, trusted by companies at the forefront of innovation — from Software and Aerospace to AI, Clean Tech, Medical Devices, and Connected Technologies.

Fairfax, VA30+ days ago

This individual will provide systems engineering leadership across R&D and product development programs, play a key role in shaping technology and product roadmaps, and contribute to high-impact strategic business opportunities. We are seeking a talented, self-driven, and technically exceptional Principal Systems Engineer to lead multidisciplinary engineering teams in the development of complex electronic systems for space applications.

Fairfax, VA30+ days ago

Full-time

The ideal candidate will bring a deep expertise in federal healthcare operations, particularly within VHA, and a strong track record of leading cross-functional teams to deliver strategic solutions. This candidate will work closely with internal teams and federal healthcare clients to develop integrated program solutions and oversee project execution across multiple capability areas.

Leesburg, VA17 days ago

$160,000–$195,000 Per Year

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McLean, VA30+ days ago

If you have the courage to take on a wide variety of complex challenges, then you will experience a unique working environment where innovative teams blend different perspectives, disciplines, and technologies to discover new ways of solving complex problems. Technical Resource and Knowledge Bridge: + Serve as the internal technical authority on ISR systems, providing guidance to program management and engineering teams lacking specialized intelligence collection and surveillance knowledge.

Reston, Virginia30+ days ago

$176,000–$282,000 Per Year

Responsibilities: Peraton is seeking a Systems Engineer, Principal to join our national intelligence program in Northern Virginia as the primary technical authority responsible for the strategic design, implementation, and 24/7 operational excellence of the IT Enterprise Infrastructure client’s technology stack. • Oversee cloud migrations, data center modernization, global networking, and cybersecurity integration with the mission is to transform "legacy" into "leading-edge" while maintaining the 99.99% uptime our global operations demand.

Reston, Virginia30+ days ago

$146,000–$234,000 Per Year

Responsibilities: Peraton is seeking a Systems Architect Principal to join our national intelligence program in Northern Virginia as the primary visionary and strategist to transition the client’s Enterprise IT Infrastructure to a cutting edge resilient, scalable and self-healing Infrastructure environment. As the worlds leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies.

New!

Reston, VA2 days ago

$70–$90 Per Hour

The specific compensation for this position will be determined by several factors, including the scope, complexity, and location of the role, as well as the cost of labor in the market; the skills, education, training, credentials, and experience of the candidate; and other conditions of employment. This role requires a deep understanding of technical architecture and hands-on experience implementing solutions in cloud environments, particularly AWS or Azure.

New!

Fort Belvoir, VA2 days ago

$140,000–$190,000 Per Year

Possess several of the following: Networking - Cisco Certified design Expert (CCDE or CCIE), Compute/Cloud – AWS Certified Solution Architect or Azure Solutions Architect Expert, Security – Certified Information Systems Security Professional (CISSP ). Enterprise Architect aligns with senior or principal-level architecture and systems engineering categories, because the role requires broad organizational impact, independent judgment, and deep technical expertise.

Chantilly, Virginia30+ days ago

$170,000–$190,000 Per Year

The ideal professional will have extensive experience supporting, developing, presenting, and defending highly-secure mobile application systems and play a critcial role in shaping the direction and success of the mission. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Chantilly, Virginia30+ days ago

Bachelor's degree with 8 years of relevant experience, a Master’s degree with 6 years of relevant experience, a PhD with 4 years of relevant experience, or 12 years of relevant experience in lieu of a degree. Bachelor's degree with 5 years of relevant experience, a Master’s degree with 3 years of relevant experience, a PhD with 1 year of relevant experience, or 9 years of relevant experience in lieu of a degree.

Chantilly, Virginia30+ days ago

ECS 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). Bachelor and/or Master of Science in Civil Engineering, Environmental Engineering, or other Engineering degree applicable to Environmental Consulting, Natural or Environmental Science, Geology, or other degree relevant to the practice of Environmental Consulting.

Reston, Virginia30+ days ago

This role blends deep technical expertise in enterprise networking and end user support with the capture acumen, strategic creativity, and customer relationship skills required to win in one of the federal government's most competitive IT services landscapes. The right candidate understands the State Department's global IT mission, including the unique demands of supporting 260+ diplomatic posts worldwide and can translate that understanding into compelling, differentiated solutions and proposals.

McLean, Virginia30+ days ago

Remote

Serve as a pricing expert and senior subject matter resource, collaborating with directorate senior management, account managers, capture teams, and proposal and pricing leadership to develop accurate, competitive, and profitable pricing proposals mainly focused on mid- to large-sized federal professional services opportunities. Develop effective Excel cost models and cost/price narratives in response to RFPs and task order requests across a range of contract types (Cost Plus, T&M, FFP, IDIQ, etc.), ensuring accuracy, internal consistency, and alignment with technical and staffing approaches.

Sterling, Virginia25 days ago

Operating in an AI-enabled modernization environment, this leader ensures AI solutions enhance operational efficiency, strengthen system interoperability, and deliver measurable mission impact across federal programs supporting both growth (innovation, solutioning, and client pursuit support) and delivery (end-to-end implementation and operationalization). Partner with internal account teams across all Business Units to support pre-sales and sales activities by presenting AI solutions to Federal clients, including client workshops, solutioning, whiteboarding, proposal support, and technical volume contributions.

Springfield, VA30+ days ago

Full-time
Employee

5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.

McLean, VA30+ days ago

Leveraging your lessons learned from being in the trenches, you'll shape how software applications and data platforms are researched, architected, built, and deployed at scale—while providing expertise on design patterns, tooling choices, and AI/ML strategy across multiple teams. 8+ years of hands-on software engineering experience with a proven track record of leading engineering teams to production at enterprise scale, including work supporting Intelligence Community missions in classified environments .

McLean, VA30+ days ago

Remote

Raft (https://TeamRaft.com) is a customer-obsessed non-traditional defense tech company dedicated to empowering U.S. military and government agencies with cutting-edge AI/ML and data solutions. With headquarters in McLean, VA, our range of clients includes innovative federal and public agencies leveraging design thinking, cutting-edge tech stack, and cloud-native ecosystem.

Reston, Virginia30+ days ago

Provide key support on other insurance programs, including aviation and cyber risk underwriting submission preparation, international placements, and cost allocations; Administer General Dynamics’ Risk Management Information System (RMIS), by recommending, developing and deploying program enhancements, maintaining and updating data and creating reports; Coordinate various business unit activities including responding to inquiries, contract reviews/compliance, certificate of insurance requests, and training/webinar efforts; and, Other duties as assigned. This is an exciting opportunity for any student pursuing a career in Risk Management & Insurance to apply their knowledge to real-world corporate risk programs, meet with various insurance professionals, and work with our international risk management team.

New!

Frederick, MD3 days ago

Duties may include but are not limited to; general geotechnical engineering practice including the preparation of geotechnical reports/calculation, technical support of field staff, review of construction inspection daily field reports, and occasional project site field visits related to the projects you are involved in. Candidate will work with our geotechnical and materials testing/inspections departments and be responsible for a wide variety of projects for public and private sector clients.

Manassas, VA30+ days ago

About Electra:At Electra, we're pioneering sustainable aviation by developing hybrid-electric Ultra Short Takeoff and Landing aircraft designed to transform regional air mobility, by making air travel more efficient, quieter, and environmentally friendly. Able to operate from soccer field-sized spaces, our Ultra Short unlocks a new era of aviation through what we call Direct Aviation - the next level of connectivity bringing air travel closer to where we live, work, and play.

Chantilly, VA30+ days ago

OR Certification Certified Cloud Security Professional (CCSP); Certified Secure Software Lifecycle Professional (CSSLP); CompTIA Cloud+; or CompTIA SecurityX (formerly CASP+); Federal IT Security Professional Designer-NG (FITSP-D); GIAC Defensible Security Architecture (GDSA) Certification 10 - 20 years of experience designing Special Access Program (SAP) Networks; Experience must include Network Design, implementation, deployment and troubleshooting Cisco, Palo Alto and Juniper routers, switches and Local Area Network (LAN) Collapse/Extension and migration Proficiency in Network Design, impleme tation, troubleshooting and optimization Experience in Firewall, VTC configuration deployment and troubleshooting Working knowledge of virtualization technologies (e.g, VMware, Hyper-V), services, architectures/designs, and best practices Strong understanding of network security principles and practices. Provide technical support to computer users to help solve users' problems and support activities within Special Access Programs (SAPs) supporting Department of Defense (DoD) agencies Qualifications Active TS/SCI Clearance and be SAP eligible U.S. Citizenship Required for the purposes of obtaining/holding a U.S. security clearance Eductation Requirement BS Degree in Information Technology, Cybersecurity, Data Science, Information Systems or Computer Science from an ABET accredited or CAE designated institution.

Tysons, VA30+ days ago

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. The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information.

Tysons, VA30+ days ago

Strategic account ownership and influence – Retains long-term commercial ownership of global strategic accounts while setting the bar for enterprise sales execution through influence on vertical sales strategy, value frameworks, and executive messaging without people management or formal authority. Global strategic outbound and pipeline ownership – Owns outbound pipeline creation for top-tier global strategic accounts, with heavy reliance on direct AE-led prospecting and partnership with SDR and Marketing to engage senior executives across business units and geographies.

Rockville, MD18 days ago

Remote

$186,000–$225,000 Per Year

In this role, you will serve in a leadership capacity on Centers for Medicare & Medicaid Services (CMS)–funded projects, while also contributing to business development initiatives across Abt’s health policy portfolio. To be successful, you will thrive in a collaborative, team-based environment, where you will both participate in and lead major projects, direct proposal efforts, and build and sustain strong client relationships.

Reston, VA7 days ago

$200,300–$293,810 Per Year

Its charter is to identify high-value opportunities where AI can materially improve service delivery efficiency, analyst productivity, consistency, quality, scalability, and customer outcomes, then drive those opportunities from problem discovery through prototype validation, operational adoption, and transition into durable capabilities or differentiated offerings. The Services organization is creating a Principal Product Manager, Applied AI & Agentic Solutions role to lead the identification, incubation, and scaling of AI-enabled capabilities across how Proofpoint delivers services and how Services teams operate internally.

Reston, Virginia30+ days ago

What You’ll Do: Contribute to the Technical Roadmap and support the design, implement, and operate the Ground Resource Manager (GRM) and Flight Management System (FMS) software components required to meet the SDA PWSA (Proliferated Warfighter Space Architecture) mission objectives. As a Product Owner on the Ground System Development team, you’ll be responsible for managing multiple activities and projects, including those with cross-functional teams, to deliver customer-driven Ground System Management Systems.

McLean, VA30+ days ago

The ideal candidate will work closely with the U.S. Army, foreign military clients, and internal engineering teams to ensure the successful integration of ISR systems into military operations, meeting mission-critical requirements and operational demands. If you have the courage to take on a wide variety of complex challenges, then you will experience a unique working environment where innovative teams blend different perspectives, disciplines, and technologies to discover new ways of solving complex problems.

Chantilly, VA30+ days ago

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope.

Frederick, Maryland30+ days ago

$150,000–$200,000 Per Year

ECS 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). Bachelor of Science in any of the following: Civil Engineering, Construction Engineering and Management, Materials Science Engineering, Architectural Engineering, or Geology; Note: Construction Management degrees and certain Technology degrees may not be considered.

Oakton, VA30+ days ago

$158,200–$237,400 Per Year

Design and implement scalable, secure, and efficient technology solutions that align with business and technical objectives, while providing technical leadership and facilitating crucial design decisions in collaboration with Enterprise Architects and System Engineers. Key Roles and Responsibilities: Typical tasks may include, but are not limited to, the following: Specify the Components and Their Interactions: Define high-level solutions with customers, stakeholders, and development teams.

Reston, VA30+ days ago

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Principal Jobs in Elliot, CT

Jobs

Tax Principal (Hybrid)Jobot

Principal Engineer - System Design & SimulationTeleWorld Solutions

Principal Software EngineerKastle Systems

Principal AI/ML EngineerPantheon Data

Preschool PrincipalLearning Care Group

Principal Contract Administrator / Sr Prncpl Contract AdministratorNorthrop Grumman

Principal Flight Controls System EngineerElectra

Principal Manufacturing Engineer - Primary StructuresElectra

Principal Manufacturing Engineer – Systems InstallationElectra

Principal Electrical Engineer (Aviation)Electra

Principal Systems Test EngineerElectra

Principal Data Engineer – Mission Data PipelinesBOOST LLC

Principal Electrical EngineerRussell Solutions Group

Senior Principal Cyber Systems Engineer (DevOps Engineer) TS/SCI with CI PolySHLD, Inc.

Senior Principal/Staff Cyber Software Engineer CI PolySHLD, Inc.

Principal Cyber Software Engineer (Front End/UI-Focused) CI PolySHLD, Inc.

Senior Principal/Staff Cyber Software Engineer (TS/SCI)SHLD, Inc.

Principal Application EngineerLegal & General America

Principal/Senior Engineer, PropulsionProtingent

Principal Systems EngineerIntrepidus Talent Solutions

Principal (Federal Health)Prometheus Federal Services

Principal Digital Signal Processing EngineerJudge Group

Principal Systems Engineer - ISR SMEQinetiQ US

Systems Engineer, PrincipalPeraton

Systems Architect, PrincipalPeraton

Principal Cloud & Data Architect (MLOps & AWS)Pinnacle

Principal Enterprise ArchitectJANUS Research Group

Principal Cyber Software Engineer (Mobile)Markon

Principal Cyber Software Test EngineerVTG

Environmental Senior Project Manager - PrincipalECS Ltd

Principal Solutions ArchitectTekSynap

Pricing Analyst, Staff PrincipalAMERICAN SYSTEMS

Principal AI EngineerREI Systems

Principal Identity, Credential, and Access Management (ICAM) ArchitectHII Mission Technologies Division

Principal Engineering LeadRaft Company Website

Principal DevSecOps EngineerRaft Company Website

Principal, Risk ManagementGeneral Dynamics

Principal Geotechnical/CMT EngineerHillis-Carnes

Principal Battery Systems Integration Engineer (Aerospace)Electra

Principal Network Engineer/ SMEAmerican Systems

Principal Network Security EngineerAlarm.com

Principal Account Executive, EnterpriseBehavox

Principal Associate- Medicaid ImplementationAbt Global Inc.

Principal Product Manager, Applied AI & Agentic Services SolutionsProofpoint

Principal Ground Systems Development Engineer, Product OwnerIridium Satellite, LLC

Principal Systems Engineer - Aerostat SMEQinetiQ US

Senior Firmware Engineer II/PrincipalRocket Lab Corporation

Construction Materials PrincipalECS Ltd

Principal Solution Architecture-2AT & T

Principal, Risk ManagementUNAVAILABLE

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