131 principal engineer jobs at 48 companies in Hagerstown, MD
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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
3mo
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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
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
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
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
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
2mo
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Principal Systems Engineer
Germantown, Maryland, United States
$131k-$177k/yr OnsiteFull Time
8+ YOEBachelor's in engineering or equivalent, minimum 8 years integration engineering experience, ability to obtain DOD Secret clearance, U.S. citizenship, strong systems integration, troubleshooting, and communication skills.
Cameo, MatLab, STK
1mo
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Principal Engineer – Connector Reliability
Yocumtown, Pennsylvania, United States
OnsiteFull Time
8+ YOEPh.D. preferred (master's acceptable with experience). 8+ years engineering experience, 5+ years reliability engineering, DFMEA and ALT/HALT experience, familiarity with standards and statistical reliability tools.
Weibull++, ReliaSoft, Minitab, SEM, DFMEA, MIL-HDBK-217F, Telcordia SR-332, IEC TR 62380, FIDES, IEC 60512, USCAR-2, AEC-Q200, MIL-STD, ALT, HALT, HAST
3d
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Principal Hardware Engineer
Ashburn, Virginia, United States
$144k-$190k/yr OnsiteFull Time
15+ YOEBachelor’s degree in electrical engineering, 15+ years of DoD embedded hardware experience, mixed-signal and high-speed circuit design, HDI PCB expertise, Siemens Expedition tools, leadership skills, and US citizenship.
Siemens Expedition DX Designer, Siemens Expedition PCB, Microsoft Office, Microsoft Excel, Microsoft Outlook, Microsoft PowerPoint, FPGA, DSP, VPX
6d
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Principal Design Engineer
Chantilly or Herndon
$220k-$292k/yr OnsiteFull Time
20+ YOERequires 20+ years of mechanical and mechanism design, 10+ years designing spacecraft systems, 3-D CAD, prototyping, testing, leadership, and an engineering BS, MS, PhD, or equivalent experience. U.S. citizenship and Top Secret eligibility required.
3-D CAD, Oscilloscopes, power supplies, electronic loads, multimeters
2w
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Principal Product Engineer - Evinova
Gaithersburg, Maryland, United States
$172k-$259k/yr HybridFull Time
8+ YOE8+ years software engineering experience with production AI features, strong full‑stack and AWS experience, ability to mentor engineers and own technical direction; Bachelor's degree required.
AWS, 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, Claude Code, Cursor, Copilot, opencode, Hermes Agent, MCP, RAGAS
1mo
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Sr. Principal Platform Engineer
Herndon, Virginia, United States
HybridFull Time
9+ YOETop Secret clearance, 8+ years platform or full-stack engineering experience, Kubernetes and cloud (AWS/Azure) proficiency, IaC (Terraform), CI/CD and GitOps experience, Go/Python, Prometheus/Grafana.
Kubernetes, AWS, Azure, Terraform, Crossplane, Ansible, KIND, Helm, Kustomize, Istio Service Mesh, Prometheus, Grafana, Docker, Podman, Go, Python, CI/CD, GitOps, Rook-Ceph, KeyCloak, OpenID Connect (OIDC), Foundry, IPSec, OpenVPN, Wireguard
1mo
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Principal Systems Engineer- DRT
Germantown, Maryland, United States
$150k-$191k/yr HybridFull Time
8+ YOEU.S. citizen able to obtain Top Secret/SCI, BSEE/BSCS (or equivalent) required, MSEE/MSCS preferred, 8+ years systems/design engineering, RF/Digital/communications experience, strong written/presentation skills.
1w
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Principal Mechanical Engineer
Sterling, Virginia, United States
$107k-$198k/yr OnsiteFull Time
9+ YOEBachelor’s in Aerospace/Mechanical (ABET),9+ years' related experience (7+ with Master’s),space hardware experience,PDM/configuration management,SolidWorks and Ansys Workbench familiarity,ability to support travel.
SolidWorks, Ansys Workbench, PDM
1w
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Principal ELINT Processing Engineer
Herndon, Virginia, United States
$170k-$220k/yr OnsiteFull Time
12+ YOEBachelor's in engineering or related field (or equivalent experience),12+ years ELINT signal processing experience, expert with ELINT ground processing and geolocation, CI/CD and systems integration experience, strong communication skills.
Sceptre, MARTES, ASPEN, CBET, Python, MATLAB, R, Jenkins, GitLab CI, CI/CD
3mo
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Principal Software Automation Engineer
Gaithersburg, Maryland, United States
$117k-$178k/yr HybridFull Time
7+ YOEBachelor's or higher in a related field; 7+ years of automation software design; experience with industrial robots/PLCs, C#/.NET or Java/C++, XML/SQL, MATLAB; hardware/software integration; machine vision preferred.
C# .Net, Java, C++, XML, SQL, MATLAB, PLC, Ladder Logic, Structured Text, Machine Vision, GPUs, Networking
1w
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Regional Geotechnical Principal
Frederick, Maryland, United States
$125k-$175k/yr OnsiteFull Time
12+ YOERequires 12 years of related experience, a civil or geological engineering degree, PE or PG license, technical expertise, project and risk management experience, business development success, leadership skills, and advanced geotechnical software proficiency.
advanced geotechnical analysis software
1w
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Principal Power Electronics Engineer (onsite)
New Freedom or United States or Maryland
$100k-$135k/yr OnsiteFull Time
7+ YOEMaster's degree in electrical engineering with power electronics specialization and 7+ years of power electronics industry experience; strong controls and inverter experience required.
MATLAB/Simulink, OPAL-RT, Saber, Variable Speed Drives (VSD), IGBT
4w
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Principal AI Engineer - Evinova
Gaithersburg, Maryland, United States
$145k-$190k/yr HybridFull Time
4+ YOEMaster's degree and 4+ years applied ML experience; expertise in deep learning, NLP, generative AI, LLMs, agentic systems, Python and ML frameworks; strong communication and leadership.
Python, TensorFlow, PyTorch, Google ADK, Crewai, LangChain, LlamaIndex, SageMaker, Bedrock, MSK, EKS, ECS, OpenSearch, C, C++, Rust, CUDA
2w
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Principal Data Center Facilities Engineer
Ashburn, Virginia, United States
$102k-$210k/yr OnsiteFull Time
3+ YOE3+ years data center or facilities engineering experience; incident management, commissioning, and technical reporting skills; ability to support critical infrastructure and drive operational improvements.
computational fluid dynamics (CFD)
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