740 principal engineer jobs at 206 companies in Reston, VA
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Principal Engineer
Annapolis Junction or Laurel
$50k-$290k/yr OnsiteFull Time
The Swift Group: Providing engineering and cybersecurity services for national security missions.
15+ YOEProvide system engineering oversight for HPC environments: configure and maintain Linux clusters, support users, develop documentation, coordinate testing, use GitLab/GitLab CI; minimum 15 years technical experience and current government clearance with polygraph.
Linux, HPC, GitLab, GitLab CI
2mo
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Senior Principal Mission Engineer
Chantilly, Virginia, United States
OnsiteFull Time
15+ YOESenior Principal Mission Engineer with 15+ years in DoD/NRO space programs; OPIR/space ISR experience; MBSE; TS/SCI clearance preferred.
MATLAB, STK, MODTRAN, MBSE, Cameo
3mo
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Principal Engineer, Mechanical
Atlanta or Annapolis or Montgomery or Austin or Granbury or Fort Worth or Wharton or Alexander City or Perryman or Harrisburg
$151k-$168k/yr RemoteFull Time
10+ YOEBachelor's in engineering with 10 years experience; strong expertise in combustion turbines or steam turbines; leadership or senior-level credentials preferred.
Gas Turbine Technology, Engineering Analysis Tools
2d
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Salesforce Principal Engineer
Tysons or McLean
$85k-$167k/yr OnsiteFull Time
10+ YOEBachelor's degree in computer science, engineering, or technology preferred, or equivalent experience; 10+ years in banking technology and solution architecture; 5+ years mentoring technologists.
Salesforce Financial Cloud, Salesforce Data Cloud, MuleSoft, AWS, Artificial Intelligence (AI)
1mo
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Senior Principal Engineer
Washington, District of Columbia, United States
$159k-$191k/yr HybridFull Time
10+ YOEBachelor's in electrical engineering, 10+ years in electric power planning/operations/reliability, NERC knowledge, strong communication and consensus-building, Microsoft Office proficiency.
Microsoft Word, PowerPoint, Microsoft Excel, Microsoft Outlook, Clear Company
1mo
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Associate Principal Engineer
Dulles, Virginia, United States
OnsiteFull Time
12+ YOE5+ MgmtBachelor's degree in engineering, PE license, 12+ years relevant experience with 5+ years managing people; expert HVAC/plumbing systems knowledge; strong communication and CADD/Microsoft skills.
CADD, Microsoft Office, Microsoft Excel
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Principal Engineer
Dahlgren or Washington
OnsiteFull Time
25+ YOE25+ years US Navy or equivalent experience with Aegis/ABMD/SSDS/IAMD/NIFC-CA or similar systems, advanced writing/speaking skills, 2 years Microsoft Office experience, US citizenship and eligibility for access to classified information.
Aegis Combat System, Aegis Ballistic Missile Defense (ABMD), NIFC-CA, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
2mo
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Principal Antenna Test / Sr Principal Antenna Test Engineer
Sykesville, Maryland, United States
$109k-$163k/yr OnsiteFull Time
5+ YOEBS/MS in Electrical Eng; 5+ years (Principal) or 8+ years (Sr Principal) in RF/test; RF test equipment; software dev in C#, VB, MATLAB; DoD Secret clearance with SAP; US citizenship.
Oscilloscope, Power meter, Spectrum analyzer, Signal generator, C#, Visual Basic, MATLAB
2w
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Principal Structural Engineer
Fredericksburg, Virginia, United States
$110k-$155k/yr OnsiteFull Time
5+ YOEB.S. in Civil Engineering (structural emphasis), PE preferred, 5+ years structural engineering experience, retaining wall and foundation design, knowledge of building codes, strong analytical and communication skills.
1w
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Sr. Principal Engineer - Autonomy
Frederick, Maryland, United States
$104k-$174k/yr OnsiteFull Time
6+ YOEBachelor's degree in engineering or related field and 6+ years of related experience; advanced C++ and ROS2 proficiency, autonomous systems experience, Ubuntu 22.04+, and distributed systems expertise.
C++, ROS2, Ubuntu 22.04+, graphical user interfaces, inter-process messaging
2mo
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Principal Mechanical Engineer
Sterling, Virginia, United States
OnsiteFull Time
9+ YOESenior mechanical engineer with 9+ years experience in aerospace/space hardware, ABET degree, CAD/FEA expertise, PDM experience, and cross-disciplinary collaboration.
SolidWorks, ANSYS Workbench, PDM
1w
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Principal Engineer - Mechanical
Reston, Virginia, United States
$160k-$231k/yr HybridFull Time
13+ YOEBachelor’s or master’s in mechanical engineering or related field, 13–15 years’ relevant experience, and 10+ years designing mechanical systems for combined-cycle fossil power plants.
P&ID, ASME, HEI, CTI, HI
1d
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Principal Engineer - FPGA/ASIC Design
Reston or Washington, D.C. or Indianapolis or West Lafayette
$152k-$247k/yr HybridFull Time
5+ YOEBachelor's with 5+ years, master's with 3+ years, or PhD in electronics or computer engineering; U.S. citizenship required. FPGA/ASIC, RTL, VHDL/Verilog/SystemVerilog and verification experience required.
FPGA, ASIC, DO-254, VHDL, Verilog, SystemVerilog, TCL, Python, Shell, Windows, Linux, Git, SVN, Actel, Xilinx, MATLAB, Simulink, Cameo Systems Modeler, MagicDraw, SysML, ILA, JTAG, Microsoft Excel
1d
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Principal Engineer - FPGA/ASIC Design
Reston, Virginia, United States
$152k-$247k/yr HybridFull Time
5+ YOEBachelor's degree plus 5+ years, master's plus 3+ years, or PhD in electronics or computer engineering; U.S. citizenship required. FPGA/ASIC, RTL, verification, timing closure, and development tool experience required.
FPGA, ASIC, VHDL, Verilog, SystemVerilog, MATLAB, Simulink, Cameo Systems Modeler, MagicDraw, TCL, Python, Shell, Windows, Linux, Git, SVN, JTAG, ILA, DO-254, SysML, Actel, Xilinx, oscilloscopes, logic analyzers
1mo
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Senior Principal Software Engineer
Annapolis Junction, Maryland, United States
$183k-$193k/yr HybridFull Time
8+ YOEBachelor's in software engineering (or related STEM) with 10+ years experience or Master's with 8+ years; ability to obtain DoD TS/SCI clearance; strong software lifecycle, embedded/Linux development, Kubernetes/CI/CD experience.
CI/CD, Kubernetes, Helm, containerd, Docker, Podman, FPGA, Linux, Model Context Protocol (MCP), AI/ML
1mo
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Sr Principal Sys Engineer - D5LE2
Rockville, Maryland, United States
$150k-$254k/yr HybridFull Time
10+ YOEBachelor's in engineering, 10+ years systems engineering in DoD acquisition with 5+ years on ACAT 1 strategic deterrence programs; MBSE, DoD 5000 knowledge; strong communication, risk management, and documentation skills; must be U.S. person and able to obtain Secret clearance.
MBSE, DoD 5000 Adaptive Acquisition Framework
2mo
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Senior Principal Reverse Engineer
Arlington, Virginia, United States
OnsiteFull Time
10+ YOEUS Citizenship; active TS/SCI clearance; DHS suitability; 10+ years hardware reverse engineering or embedded systems analysis.
IDA Pro, Ghidra, Binary Ninja, Python, C, Assembly
3mo
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Principal Systems Engineer (Onsite)
Sterling, Virginia, United States
$118k-$225k/yr OnsiteFull Time
8+ YOERequires STEM degree with 8+ years experience or advanced degree with 5+ years; U.S. DoD Secret clearance; U.S. citizenship.
Python, MBSE, DOORS, JAMA, JIRA, Confluence, MIL-STD-810, MIL-STD-461, MIL-STD-704
2mo
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Senior Engineer (Engineer III) / Principal Engineer (Engineer IV) – Propulsion
Rockville, Maryland, United States
$160k-$200k/yr OnsiteFull Time
7+ YOESenior or Principal propulsion engineer with 7-10+ years, leadership of engineering teams, strong project management, and aerospace/system design expertise.
1w
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Principal Product Engineer - Evinova
Gaithersburg, Maryland, United States
$172k-$259k/yr HybridFull Time
8+ YOE8+ years software engineering experience with principal-level ownership, production AI feature experience (agents,RAG,model orchestration), strong full‑stack and AWS experience, mentoring ability, and a bachelor's degree.
AWS, EKS, React, TypeScript, Vite, Tailwind, shadcn/ui, BlockNote, Nginx, Node.js, Next.js, Python, Kafka, FastAPI, Dramatiq, Valkey, PynamoDB, SQLAlchemy, asyncpg, Prometheus, MongoDB, Docker, Kubernetes, AWS CDK, ECS Fargate, DynamoDB, S3, RDS, ElastiCache, Bedrock, Secrets Manager, SSM, NX, pnpm, GitHub Actions, GHCR, Docker/Buildx, Wiz, GitHub OIDC, Google ADK, LiteLLM, OpenRouter, Langfuse, OpenTelemetry, RAGAS, Claude Code, Cursor, Copilot, opencode, Hermes Agent, MCP
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