64 principle developer jobs at 47 companies in McLean, VA
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Cost Engineer, Principle
Tysons, Virginia, United States
$125k-$156k/yr OnsiteFull Time
5+ YOEMinimum 5+ years experience (varies by degree), proficiency with AutoCAD and Microsoft Office, estimating and project scheduling experience, blueprint interpretation, and familiarity with electrical equipment and contract documents.
Microsoft Office, AutoCAD, MS Project, P6, Accubid
2mo
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Cost Engineer, Principle
Tysons, Virginia, United States
OnsiteFull Time
5+ YOEFive+ years with a Master’s degree; multiple advanced degrees/experience combinations; proficient in MS Office and AutoCAD; experience with estimating, project management, and scheduling software.
MS Office, AutoCAD, Estimating Software, Project Management Software, Scheduling Software
2w
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Principle Senior Mechanical Engineer, Facility Systems
Washington, District of Columbia, United States
$118k-$201k/yr OnsiteFull Time
8+ YOEABET-accredited BS in Mechanical Engineering with extensive HVAC/mechanical systems experience, 6–8+ years related professional experience, proficiency with HVAC equipment sizing and codes, desire to attain PE, strong communication skills.
Microsoft Outlook, Microsoft Excel, Microsoft Word, Microsoft Teams, Trane Trace, Carrier HAP
2mo
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Azure DevOps Engineer III (Principle) (78176)
Sterling, Virginia, United States
OnsiteFull Time
6+ YOESenior DevOps engineer with 6-10+ years of experience in CI/CD, IaC, and cloud platforms; leadership and collaboration across teams; Azure focus.
GitHub Enterprise Actions, Terraform, Ansible, Azure, Kubernetes, PowerShell, Bash, Python
1mo
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Software Engineer II
Lone Tree or Sparks or Longmont or Hagerstown or Herndon or Englewood
$94k-$130k/yr HybridFull Time
2+ YOEBachelor's in CS or related,2+ years software development experience,proficiency in C++,Java,Python,knowledge of engineering principles,ability to work in multidisciplinary teams.
C++, Java, Python, C, C#, HTML, Bash, RTOS, AI/ML
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Senior Full Stack/UI Developer
Chantilly, Virginia, United States
$102k-$213k/yr OnsiteFull Time
3+ YOEActive in-scope TS/SCI with poly required (U.S. citizenship). 3+ years full-stack/UI experience, STEM degree, backend and UI development, familiarity with AI/ML and DevOps principles.
1mo
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Java Software Engineer Level 4
Aurora or Morrisville or Linthicum Heights
$142k-$213k/yr OnsiteFull Time
8+ YOETop Secret/SCI required; Bachelor’s degree (or equivalent experience); 5+ years Java development; experience with RESTful APIs, microservices, Git, and Agile; strong OO design and SOLID principles.
RESTful APIs, microservices, Java, Git, GitHub, GitLab, Bitbucket, Linux, CI/CD, Docker
3w
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Junior Software Engineer Level 0 - Polygraph Required Annapolis Junction
Annapolis Junction, Maryland, United States
HybridFull Time
Entry-level software engineer with experience in one or more languages (Java, JavaScript, TypeScript, Python), familiarity with Git, software development principles, and strong communication and problem-solving skills.
Java, JavaScript, TypeScript, Python, Git
1mo
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Applications Engineer IV
Linthicum, Maryland, United States
OnsiteFull Time
Active TS/SCI with Polygraph required; experience with Kubernetes, Docker, Harbor, Apache Spark, Apache Airflow, Linux, and AWS; knowledge of cybersecurity and networking principles.
Kubernetes, Apache Spark, Apache Airflow, Docker, Harbor, Linux, Amazon Web Services (AWS)
2mo
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Principal DevOps / Software Engineer
Laurel, Maryland, United States
$200k-$280k/yr OnsiteFull Time
12+ YOEActive TS/SCI with polygraph clearance required; US citizenship; 12 years experience with BS, or 4 additional years in place of a BS; strong Java/Python; SRE principles; Docker/Kubernetes; Git; Linux; able to document work.
Java, Python, Docker, Kubernetes, Git, Gitlab, Linux
1mo
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Traffic Design Engineer
Hunt Valley, Maryland, United States
$39-$47/hr OnsiteFull Time
Perform traffic engineering design and analysis using engineering principles, prepare plans and computations, analyze survey data, develop cost estimates, and coordinate with project teams.
2mo
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Junior Engineer
Indian Head, Maryland, United States
$100k-$120k/yr OnsiteFull Time
1+ YOEBachelor's in engineering, active DoD SECRET clearance, minimum 1 year engineering experience, knowledge of engineering principles, strong analytical and communication skills.
1w
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Engineer
Temple Hills, Maryland, United States
$45k-$65k/yr OnsiteFull Time
Bachelor's in Mechanical Engineering required, proficiency in SolidWorks/AutoCAD, understanding of mechanical principles, strong analytical and communication skills.
SolidWorks, AutoCAD
3w
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Field Engineer
College Park or Arlington or Herndon
$70k-$82k/yr FieldFull Time
Bachelor's in engineering/engineering technology or construction management, knowledge of engineering principles, ability to read drawings/specs, Microsoft Office proficiency, effective verbal and written communication.
Microsoft Office Suite, Microsoft Word, Microsoft Excel, Microsoft Project, Primavera
2w
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Staff Radar Systems Development Engineer
El Segundo or Hawthorne or Los Angeles or Washington or San Francisco or Seattle or London
$110k-$240k/yr OnsiteFull Time
10+ YOEBachelor's in STEM or equivalent,10+ years radar systems experience,expertise in radar principles,signal processing,DSP,RF systems,algorithm development,data analysis;proficiency with Python/MATLAB;ability to lead tests and mentor engineers.
C++, Python, MATLAB, FPGAs, DSPs
1w
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Electronics Engineer
Washington, District of Columbia, United States
$128k-$198k/yr OnsiteFull Time
1+ YOESpecialized experience designing or applying engineering principles to airfield electrical systems (lighting, signage, navigational aids), plus an engineering degree or equivalent; U.S. citizenship and college transcripts required.
3d
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Principal Application Engineer (hybrid)
New Freedom or San Antonio or York or Baltimore
$90k-$120k/yr HybridFull Time
3+ YOEBachelor's degree, 3+ years experience (HVAC or chiller technology preferred), knowledge of refrigeration principles, up to 15% travel.
2d
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Mechanical Engineer
Columbia, Maryland, United States
$100k-$140k/yr OnsiteFull Time
1+ YOEBachelor's degree in mechanical engineering or related field, 1–5 years of relevant experience, SolidWorks or similar 3D CAD knowledge, thermal principles, documentation, communication, teamwork, and active Secret clearance.
SolidWorks, Ansys, FloTHERM, COMSOL, 3D CAD, 3D printing, Microsoft Excel
3w
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Data Engineer
Springfield or Fairfax
$110k-$165k/yr HybridFull Time
2+ YOEUS citizen able to obtain TS/SCI, Bachelor’s in a related field, 2+ years data engineering experience, advanced proficiency with Python,Pyspark and/or SQL, data parsing, ETL, and database principles.
Python, Pyspark, SQL, Databricks, Amazon Web Services, Microsoft Azure
1mo
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GENERAL ENGINEER
Stafford, Virginia, United States
$102k-$158k/yr OnsiteFull Time
1+ YOEMinimum one year specialized experience equivalent to GS-11/NH-02 applying systems engineering principles in defense acquisition programs; expert knowledge in listed functional areas and strong oral/written communication.
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