43 sr principal software engineer jobs at 23 companies in Elkton, MD
3mo
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Sr. Principal Cyber Software Engineer
Annapolis Junction or San Antonio or Aurora or Carey
$149k-$235k/yr OnsiteFull Time
8+ YOEBachelor's degree in computer science, information systems, or network engineering with 8+ years experience; strong C/C++, Java, Python; CNO tools; Windows/.NET and Unix/Linux development.
C, C++, Java, Perl, Python, Visual Studio, NET, Unix/Linux, Makefiles
1w
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Principal Engineer, Software Engineering - eCommerce Applications
Conshohocken or Delaware or New Jersey
$111k-$221k/yr RemoteFull Time
10+ YOEBachelor's degree and 10+ years in software engineering, including 3+ years in a principal, staff, lead, or equivalent role. Requires enterprise eCommerce experience and proficiency with modern architectures, programming, cloud, security, and DevSecOps.
Microservices, RESTful APIs, Java, C#, JavaScript, TypeScript, Python, Azure, AWS, Google Cloud, CI/CD, DevSecOps, Adobe Commerce, Magento, Salesforce Commerce Cloud, SAP Commerce Cloud, Shopify Plus, Adobe Experience Manager, Sitecore, Azure API Management, Okta, Azure AD, Auth0, Kubernetes
1d
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Chief Engineer/Principal Software Engineer
Aurora or Ypsilanti or King of Prussia
$115k-$252k/yr OnsiteFull Time
10+ YOE35+ MgmtActive TS/SCI clearance, bachelor's degree in computer science or related field, 10+ years of software engineering experience, and leadership of large engineering teams in classified environments.
AWS, Kubernetes, Docker, CI/CD, DevOps, Continuous Delivery, infrastructure-as-code, Agile, Technical Exchange Meetings (TEMs), Software Development Life Cycle (SDLC)
2mo
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Principal Software Engineer, Field Engineering
Aberdeen Proving Ground, Maryland, United States
$160k-$220k/yr OnsiteFull Time
5+ YOE5+ years hands-on software engineering; active Secret clearance; backend Go/Java/Rust; DevSecOps; Kubernetes; Bash/Python; Army-domain knowledge; customer-facing; Security+ readiness; willing to relocate to APG.
Go, Java, Rust, Kubernetes, Helm, CI/CD, Infrastructure as Code, Bash, Python, RMF
2w
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Sr Principal Embedded Software Engineer
Baltimore, Maryland, United States
$136k-$204k/yr OnsiteFull Time
8+ YOEBachelor's degree in computer science, engineering, or related STEM field; 8 years' related experience; 6 years in C/C++, real-time embedded software, and full software lifecycle; U.S. citizenship; Secret clearance and SAP eligibility.
C, C++, VxWorks, Linux, Microsoft Visual Studio, MATLAB, Coverity, SonarQube, Clockwork, Atlassian, Kubernetes, Model-based Engineering, DevSecOps, Agile
1d
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Chief Engineer/Principal Software Engineer
Aurora or Ypsilanti or King of Prussia
$115k-$252k/yr OnsiteFull Time
10+ YOEActive TS/SCI clearance, bachelor's degree in computer science or related field, 10+ years of software engineering experience, large-scale team leadership, AWS, data engineering, distributed systems, Kubernetes, Agile, and SDLC expertise.
AWS, Kubernetes, CI/CD, DevOps, Docker, Microsoft?
1w
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Tech Lead/ Principal Software Engineer
Plymouth Meeting, Pennsylvania, United States
$182k-$200k/yr OnsiteFull Time
8+ YOE2+ MgmtBachelor's degree in a technical field, 8+ years developing enterprise software, and 2+ years leading engineering teams. Requires Azure, .NET/C#, Angular or React, SQL Server, NoSQL, REST APIs, Agile, and secure development experience.
Microsoft Azure, .NET, C#, Angular, React, SQL Server, REST APIs, Claude Code, GitHub Copilot, Cursor, OWASP, Python, Next.js, LLM, MCP
5d
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Principal Software Engineer
Plano or Boston or Portsmouth or Indianapolis or Columbus or United States or Los Angeles or Philadelphia or San Francisco
$137k-$257k/yr HybridFull Time
8+ YOERequires 8+ years of software engineering experience, enterprise architecture and technical leadership, distributed systems expertise, cloud-native development, and proficiency with JavaScript/TypeScript, React, Node.js, and related tools.
JavaScript, TypeScript, React, Node.js, Next.js, Java, HTML/CSS, Micro Frontends, AWS, CDK, GitHub Actions, OAuth 2.0, OpenID Connect, OWASP Top 10, Playwright, JMeter, Datadog, Splunk, Bridgeway, MFE, CI/CD, DevOps, SecOps, Generative AI
6d
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Principal Software Engineer/Principal AI Engineer
Philadelphia or Massachusetts
$115k-$192k/yr RemoteFull Time
10+ YOE10+ years software engineering experience with hands-on enterprise AI systems taken to production; BS in engineering or computer science required, advanced degree preferred; expertise in LLMs, cloud, integration, architecture, and delivery.
Microsoft?
6d
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Principal Software Engineer/Principal AI Engineer
Philadelphia or Massachusetts
$115k-$192k/yr RemoteFull Time
10+ YOE10+ years of software engineering experience with enterprise AI systems, production delivery, cloud platforms, LLMs, APIs, data pipelines, architecture, Agile, CI/CD, TDD, and technical leadership. BS in engineering or computer science required.
Microsoft Azure, AWS, Google Cloud Platform, Python, Java, TypeScript, JavaScript, SQL, MCP, RAG, CI/CD, TDD, APIs
1mo
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Principal Software Engineer
Philadelphia, Pennsylvania, United States
HybridFull Time
12+ YOE12+ years in 3D runtime or game engine development, expert C++ (C++17/20/23), graphics APIs (Vulkan, DirectX 12, Metal), engine integrations, profiling/optimization, and strong communication.
C++17, C++20, C++23, Vulkan, DirectX 12, Metal, Unreal Engine, Unity, NVIDIA Omniverse, glTF, 3D Tiles
1mo
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Principal Software Engineer
United States or Vienna or Baltimore
$220k-$372k/yr OnsiteFull Time
12+ YOE12+ years software development experience with expertise in cloud-native, storage and data management; proficiency in NFS/SMB/iSCSI and programming in C/C++/Golang/Node.js/Python.
C, C++, Golang, Node.js, Python, NFS, SMB, iSCSI, Docker, Kubernetes, GitHub, Jenkins, Ansible
1mo
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Principal Software Engineer
Baltimore or Seattle or Vienna or United States or United States
$220k-$372k/yr HybridFull Time
12+ YOE12+ years software development, 5+ years data management/storage experience, 3+ years cloud-native and SOA expertise, proficiency with storage protocols and listed programming tools, strong communication and architectural skills.
C, C++, Golang, Node.js, Python, Docker, Kubernetes, GitHub, Jenkins, Ansible, CI build systems, Automated Testing, NFS, SMB, iSCSI
2mo
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Principal Software Engineer - AI Engineer
Jersey City or Wilmington or Palo Alto
$204k-$285k/yr OnsiteFull Time
7+ YOE7+ years software engineering experience; strong Python and PyTorch/TensorFlow; experience with vector storage, agentic AI and LLM deployment, MLOps and CI/CD, cloud (AWS or Azure); leadership and responsible AI practices.
Python, PyTorch, TensorFlow, Vector storage systems, CI/CD, MLOps, AWS, Azure, LLM Suite
3w
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Principal Software Engineer, Core Services
Wayne or Naperville
$160k-$185k/yr HybridFull Time
10+ YOE10+ years software engineering experience, bachelor’s in CS or equivalent, deep TypeScript/Node.js skills, cloud-native and distributed systems experience, leadership and mentoring experience.
TypeScript, Node.js, NestJS, EC2, Lambda, S3, SNS, SQS, Docker, Kafka, React, Kubernetes, GitHub Copilot, Claude Code, OpenAI Codex
3mo
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Principal Software Engineer
Annapolis Junction, Maryland, United States
$215k-$250k/yr OnsiteFull Time
12+ YOETwelve years SWE experience; BS in CS; frontend React; Node.js/Rust; Python; Shell; Kubernetes; microservices; multi-site apps; cloud migration.
JavaScript, TypeScript, React, Node.js, Rust, Python, Shell, Kubernetes, Microservices, Cloud
2mo
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Principal Embedded Software Engineer
Newark or Marlborough
$139k-$232k/yr HybridFull Time
12+ YOEExtensive embedded systems experience (RTOS, low-level firmware, device drivers), expert C/C++ and assembly skills, hardware/software integration, leadership and mentoring experience, familiarity with communication protocols (SPI, I2C, UART, CAN) and regulated medical device environments.
FreeRTOS, QNX, Zephyr, C, C++, Assembly, SPI, I2C, UART, CAN, Git, Perforce, Microsoft Azure DevOps, SVN, DICOM, HL7
2w
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Principal Engineer, Platform Systems
Blue Bell or Boca Raton or Irving
$146k-$218k/yr HybridFull Time
10+ YOEBachelor's degree or equivalent experience and 10+ years of software engineering experience. Requires distributed systems, cloud-native architecture, cross-team technical leadership, direct implementation, and communication expertise.
Java, Spring, TypeScript, JavaScript, Kotlin, Swift, Python, C, C++, AWS, GCP, Docker, Kubernetes, CI/CD
2w
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Principal Engineer, Platform Systems
Blue Bell or Boca Raton or Irving
$146k-$218k/yr HybridFull Time
10+ YOEBachelor's degree or equivalent experience and 10+ years of software engineering experience. Requires distributed systems, cloud-native architecture, cross-team technical leadership, hands-on implementation, communication, and mentoring expertise.
Java, Spring, TypeScript, JavaScript, Kotlin, Swift, Python, C, C++, AWS, GCP, Docker, Kubernetes
2mo
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Principal Software Development Engineer
Philadelphia, Pennsylvania, United States
OnsiteFull Time
15+ YOEExtensive experience in Linux-based systems and C/C++/Golang/Python; knowledge of distributed systems, cloud-native/containerized environments, and carrier-grade network infrastructure; 15+ years relevant experience and Bachelor's degree preferred.
Linux, C, C++, Golang, Python, Docker, Kubernetes