62 principal software engineer jobs at 35 companies in Smithsburg, MD
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Principal Software Engineer
North Bethesda or Waltham
$200k-$225k/yr HybridFull Time
8+ YOE8–12+ years software development experience; strong background in system architecture, microservices, and enterprise integrations.
Python, React, TypeScript, AWS
2mo
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Principal Software Development Engineer
Reston, Virginia, United States
$185k-$277k/yr HybridFull Time
9+ YOE9+ years in software engineering; Python/Go/Java; SDLC mastery; architecture and data modeling; security risk automation; leading roadmaps and mentoring.
Python, Go, Java, Git, APIs, Data pipelines, ETL/ELT, SRS, PoCs
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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Principal Software Engineer
Columbia, Maryland, United States
OnsiteFull Time
11+ YOEBachelor's in CS or software engineering plus 11 years relevant experience, TS/SCI w/Poly clearance, design and deliver complex production software, proficiency with modern programming, CI, source control, automated testing, and strong communication.
2w
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Principal Software Engineer
Germantown, Maryland, United States
$190k-$225k/yr OnsiteFull Time
10+ YOEBachelor's in engineering or CS, 10+ years software experience including embedded systems, image/video processing, real-time/microsecond control, proficiency in C/C++, and strong hardware collaboration and mentoring skills.
C/C++, continuous integration, DevOps
4w
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Principal Software Developer Engineer
Reston or Austin or Seattle
$115k-$235k/yr OnsiteFull Time
6+ YOEU.S. citizenship and active TS/SCI with Poly required. Senior software engineer with multi-year experience designing, building, testing, and operating distributed application services; experience with databases, programming/scripting, secure development, code review, and mentorship.
Oracle Cloud Infrastructure, AWS, Azure, Google Cloud, RESTful APIs, microservices, CI/CD, containers, Kubernetes, Linux, observability
1mo
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Sr Principal Engineer Embedded Software
Sterling, Virginia, United States
$142k-$213k/yr OnsiteFull Time
8+ YOEUS citizen able to obtain TS/SCI clearance; degree in ECE or related STEM plus 8/6/4 years embedded software experience depending on degree; strong C/C++, Python, Windows/Linux scripting, revision control skills.
C, C++, Python, Windows, Linux, Subversion, Git, Jenkins, Jira, Bitbucket, National Instruments, SpaceWire, MIL-STD-1553
1mo
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Sr Principal Engineer Embedded Software
Sterling, Virginia, United States
$142k-$213k/yr OnsiteFull Time
4+ YOEUS citizen able to obtain/maintain Top Secret/SCI clearance; advanced degree in EE/CE or related STEM with 4–8+ years embedded software experience; proficiency in C/C++, Python, Windows/Linux scripting, and revision control; hardware-in-the-loop simulation experience.
C/C++, Python, Windows, Linux, Subversion, Git, Jenkins, Jira, Bitbucket, National Instruments, SpaceWire, MIL-STD-1553, RS-422, UART
4d
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Principal Software Engineer
Colorado Springs or Dayton or Herndon
$175k-$200k/yr HybridFull Time
Software development experience with Unix/Linux, microservices, messaging, REST APIs, Agile/DevOps, Python, Java, JavaScript/React, and Cucumber; ability to obtain and maintain Top Secret clearance.
Unix, Linux, RabbitMQ, REST APIs, Agile, DevOps, Python, Java, JavaScript, React, Cucumber, CI/CD, GitHub, GitLab, Jira, Sphinx, NASA GMAT
1mo
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Principal Software Engineer
Ashburn, Virginia, United States
HybridFull Time
8+ YOE8+ years embedded software experience (or 6+ with MS), strong C and C++, embedded systems and debugging, Unix/Linux proficiency, unit testing, ability to work with hardware teams; eligible for DOD security clearance.
C, C++, Unix, Linux, yocto, JIRA, Confluence, Git
1mo
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Software Engineer, Principal - TS/SCI
Centreville or Herndon or Columbia or Augusta or San Antonio or United States
$125k-$225k/yr HybridFull Time
10+ YOE10+ years software engineering experience, C/C++ proficiency, strong Windows knowledge, Git familiarity, active Top Secret/SCI clearance, bachelor’s in CS preferred, documentation and collaboration skills.
C/C++, Git, Python, CI/CD, Windows APIs, win32, Windows Native
3w
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Principal Software Engineer
Ashburn or Massachusetts
OnsiteFull Time
5+ YOEBachelor's in EE/Comp Eng (or equivalent), 5+ years experience, strong C, Linux/VxWorks, device driver and firmware/BIOS development, hardware verification, familiarity with git/svn and JIRA, secret clearance desirable.
C, Linux, VxWorks, Yocto Linux, Xilinx PetaLinux, git, svn, JIRA
1mo
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Principal Software Engineer
Herndon or Columbia
OnsiteFull Time
TS/SCI clearance required; bachelor's in CS or equivalent experience; experience with Python or GoLang, Kubernetes, containerization (Docker/Podman), GitOps/CI/CD/IaC, and modern DevSecOps practices; architecture and mentoring experience.
Python, GoLang, Kubernetes (K8s), CI/CD, IaC, GitOps, Docker, Podman, Crossplane, Backstage, DevSecOps, Microsoft Azure, Amazon Web Services (AWS)
2w
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Principal Software Engineer
Columbia, Maryland, United States
$200k-$280k/yr OnsiteFull Time
12+ YOEActive or re-instantiable TS/SCI with Polygraph required, U.S. citizenship, 12+ years SWE experience, BS in CS or equivalent, Python and Java (Spring Boot), Git, infrastructure automation and AI-assisted tools experience.
Python, Java, Spring Boot, Git, GitLab CI/CD, Docker, Kubernetes
1mo
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Principal Engineer II - Software
Germantown, Maryland, United States
$162k/yr OnsiteFull Time
7+ YOEBachelor's in CS or related plus 7+ years software development; 7 years experience with Java, Node.js, Springboot, J2EE, Oracle PL/SQL, BPM, DevSecOps/CI/CD, test automation, API gateways, GCP, messaging and microservices in OSS/BSS domain.
Java, Node.js, Springboot, J2EE, Oracle PL/SQL, BPM, DevSecOps, CICD, JMeter, JUnit, APIGEE, NGINX, Kong, Swagger, GCP, Google Cloud Pub/Sub, Apache Kafka, JBoss FUSE, JBoss EAP
1mo
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Principal Software Engineer- Hybrid
Columbia, Maryland, United States
HybridFull Time
20+ YOE20 years' experience with a bachelor's (or 24 years without). Experience with Java, JavaScript, Swagger, Maven, Git, Nexus, Linux; dialysis not relevant. Active TS/SCI with Full Scope Polygraph required.
Java, JavaScript, Swagger, Maven, Git, Nexus, Linux, React, Go, MongoDB, OpenSearch, REST
1mo
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Senior Principal Software Engineer (Frederick, MD, US, 21703)
Frederick, Maryland, United States
OnsiteFull Time
10+ YOEBachelor's in engineering, 10+ years experience, mastery of multiple engineering disciplines, ability to design/develop/debug software/systems (real-time, firmware, signal processing, databases, OS), lead projects, mentor engineers, and support business development.
Image and Signal Processing, Real-time, Firmware, Nuclear/Hi-Rel, FAA Certified, Database Design, Operating Systems, compilers, routers, networks, databases, Internet-related tools
1mo
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Senior Principal Lead Software Engineer (Onsite)
Sterling, Virginia, United States
$146k-$277k/yr OnsiteFull Time
10+ YOEActive and transferable Secret U.S. security clearance required. STEM degree with 10+ years' relevant experience (or advanced degree with 7+ years). Experience with Agile (Scrum/SAFe), Earned Value (EV)/CAM, CI/CD, and deploying software; lab/on-site work required.
Scrum, SAFe, Earned Value (EV), CI/CD, CORE Simulation (CORESIM), Ansible, Terraform, Python, Bash, PowerShell, RESTful APIs, Linux, Windows
1mo
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(USA) Principal, Software Engineer, Information Security
Bentonville or Herndon
$110k-$264k/yr OnsiteFull Time
5+ YOEBachelor's in related field +5 years or 7 years' software engineering experience. Expertise in Java and Python, PKI/HSM, cloud platforms, CI/CD, cert-manager/ACME, Terraform/Ansible/CloudFormation, and API development.
Java, Python, Public Key Infrastructure, Hardware Security Modules, AWS, Azure, GCP, Kubernetes, cert-manager, ACME, Terraform, Ansible, CloudFormation, CI/CD, API
3mo
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Principal Engineer - Robotics
Frederick, Maryland, United States
$92k-$148k/yr OnsiteFull Time
5+ YOEBachelor’s degree in engineering with 5+ years of related experience; proficient in C++ and Python; Linux, SQL, CI/CD; IoT/robotics experience preferred.
C++, Python, Linux, SQL, CI/CD, JavaScript
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