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193 principal software engineer jobs at 86 companies in Frederick, MD

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
2mo
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Principal Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
Envision Innovative Solutions
Envision Innovative Solutions: Provides technical engineering and mission support to government agencies.
12+ YOETwelve years of software engineering experience; BS in Computer Science; experience with Java tech stack and modern tools.
Spring Boot, Spring MVC, Spring Data, Spring Security, JMS, Kafka, Java, Oracle, Elasticsearch, Docker, Kubernetes, Maven, Gradle, GitLab, CI/CD, Angular
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1mo
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Principal Software Engineer
Arlington, Virginia, United States
OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
Extensive software engineering leadership; delivery of large-scale distributed systems; cloud, AI/data platforms; strong communication and mentorship.
AWS, Cloud, DevOps, AI tooling, LLMs, distributed systems
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2mo
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Principal Software Engineer
Bethesda or Waltham
$164k-$257k/yr HybridFull Time
ZoomInfo
ZoomInfoNASDAQ: GTM: Provides B2B contact data and sales intelligence software.
8+ YOE8+ years software engineering; production-grade APIs; GraphQL; Node.js; TypeScript; Go; OAuth2/JWT; security; scalable SaaS APIs.
GraphQL, Node.js, TypeScript, Go, Jenkins, ArgoCD, Datadog, OAuth 2.0, JWT
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2mo
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Principal Software Engineer
Annapolis Junction, Maryland, United States
$190k-$280k/yr OnsiteFull Time
GliaCell Technologies
GliaCell Technologies: Software and systems engineering for the intelligence community.
20+ YOEActive TS/SCI with Polygraph; US citizenship; 20+ years software engineering experience; bachelor's in CS or related; able to work independently and in a team; strong communication.
Java, NiFi, SQL, PostgreSQL, Elasticsearch
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2mo
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Principal Software Engineer
Waltham or North Bethesda
$200k-$225k/yr HybridFull Time
Xometry
XometryNASDAQ: XMTR: Operates an AI-powered marketplace for custom manufacturing and prototyping.
8+ YOE8–12+ years of software development; expert in Python, React/TypeScript, AWS; strong system architecture and enterprise integration experience; Bachelor's degree in CS/Engineering or related field.
Python, React, TypeScript, AWS
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2mo
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Principal Software Engineer
Annapolis Junction, Maryland, United States
$207k-$266k/yr OnsiteFull Time
Intelliforce
Intelliforce: Provides engineering and technical solutions for the intelligence community.
12+ YOETop Secret clearance with Full Scope Polygraph; US citizenship; 12+ years of software engineering; BS or higher in Computer Engineering/CS; 5 years in SIGINT/IA/IT domains; expert Java (17+), REST, Spring Boot, SOLID OO design; leadership and mentoring.
Java, Spring Boot, REST, MongoDB, Docker, Kubernetes, Elasticsearch, Logstash, Kibana, PKI, TLS, SSL, Confluence, Jira
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2mo
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Principal Engineer, Mission Software
Arvada or Los Angeles or San Francisco or Seattle or Washington
HybridFull Time
Quindar
Quindar: Cloud-native software for automated satellite mission operations.
8+ YOE3+ MgmtLead complex software and systems engineering in aerospace/defense; architecture focus; leadership; government programs; security clearance readiness.
Programming, Software Architecture, Distributed Systems, APIs, Operator tooling, Mission-critical applications
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2w
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Senior Principal Software Engineer
Annapolis Junction, Maryland, United States
$183k-$193k/yr HybridFull Time
General Dynamics Mission Systems
General Dynamics Mission SystemsNYSE: GD: Designs and manufactures defense and mission-critical technology solutions.
8+ YOEBachelor's in Software Engineering or related STEM with 10+ years (or Master's with 8+ years), ability to obtain TS/SCI clearance, experience across full SDLC, technical leadership, Kubernetes/containers, CI/CD and embedded/Linux development.
Kubernetes, Helm, containerd, Docker, Podman, MCP (Model Context Protocol)
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1w
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Principal Software Engineer
Fulton or Research Triangle Park
$223k-$295k/yr HybridFull Time
Cisco
CiscoNASDAQ: CSCO: Develops and sells networking hardware and cybersecurity software.
15+ YOECharter vision and architecture for search and analytics, mentor senior engineers, design data platform and orchestration solutions; requires extensive systems design experience and hands-on AWS,C++,Go,SQL expertise.
AWS, C++, Go, SQL, Spark, Splunk
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1mo
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Principal Software/Data Engineer
Laurel, Maryland, United States
OnsiteFull Time
Themis Insight
Themis Insight: Provides technical consulting and data analytics for national security.
19+ YOEExtensive software engineering experience; TS/SCI with polygraph; cloud infrastructure experience; strong Linux and Python; IT management understanding.
OpenStack, Linux, Python, Cloud infrastructure, COTS, GOTS
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2mo
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Principal Software Engineer (ONSITE)
Fulton, Maryland, United States
$118k-$225k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
8+ YOESoftware development with OO languages (Java/C++), full lifecycle, CS fundamentals; 8+ years experience or advanced degree.
Java, C++, Angular, GraphQL, REST, Kafka, Typescript, Docker, Kubernetes, OpenShift, Redis, Postgresql, HTML/CSS
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1mo
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383 - Principal Software Engineer
Annapolis Junction, Maryland, United States
$216k-$241k/yr OnsiteFull Time
ARSIEM
ARSIEM: Provides cybersecurity and software engineering to government agencies.
11+ YOEBachelor's degree with 11+ years of relevant experience; strong software development and scripting skills; experience in security/Android/automation preferred.
Java, Python, JavaScript, Shell, Android, Selenium
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2mo
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Principal Software Development Engineer
Reston, Virginia, United States
$185k-$277k/yr HybridFull Time
Workday
WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.
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
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2mo
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Principal Software Developer
Washington, District of Columbia, United States
HybridFull Time
BigBear.ai
BigBear.aiNYSE: BBAI: Provides AI-powered decision intelligence software for national security.
5+ YOEBachelor's degree with 5-8 years or advanced degrees with 3-6 years; active TS/SCI clearance; proficient in Java 11+, Spring, Git; knowledge of JavaFX, geospatial data, ETL, OpenGL.
Java 11+, Spring, Git, JavaFX, OpenGL, ETL, Eclipse, Ant
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2mo
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Principal Software Automation Engineer
Gaithersburg, Maryland, United States
$117k-$178k/yr HybridFull Time
Meso Scale Diagnostics
Meso Scale Diagnostics: Manufacturer of high-sensitivity multiplexed immunoassay systems and reagents.
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
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13h
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Principal Software Engineer
Hanover, Maryland, United States
OnsiteFull Time
Base-2 Solutions
Base-2 Solutions: Delivers engineering and technology services for national security.
20+ YOE20 years software engineering experience, bachelor's in CS or equivalent, active Top Secret/SCI with Full Scope Polygraph, U.S. citizenship required.
Java, C#, C++, JavaScript, Python, Scala, Ruby, Go, Eclipse, NetBeans, IntelliJ IDEA, PyCharm, Microsoft Visual Studio, VS Code, Windows, Unix, Linux, macOS, JIRA, Confluence, GitHub, ServiceNow, Spring, Angular, Bootstrap, Oracle, MySQL, MongoDB, Maven, Jenkins, Docker, Kubernetes, Git, SVN, CVS, AWS, Azure, Google Cloud
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5d
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Principal Software Engineer TS/SCI w/Poly
Fort Meade, Maryland, United States
$200k-$255k/yr OnsiteFull Time
Amentum
AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.
Design, develop, test, and maintain low-level and high-performance software; proficiency with Python and ability to read C/C++ and x86 Assembly; experience with OS internals, compilers, and reverse engineering.
Python, C/C++, Assembly (x86)
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2mo
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Principal Software Engineer
Washington, District of Columbia, United States
$152k-$229k/yr RemoteFull Time
Recorded Future
Recorded Future: Provides AI-driven threat intelligence to protect organizations from cyberattacks.
5+ YOE5+ years in data/backend/platform engineering; strong Python; cloud infra; Kafka/RabbitMQ; SQL/NoSQL; CI/CD; IaC; data pipelines; security data domain interest.
Python, Go, Rust, Cloud infrastructure, Kafka, RabbitMQ, PostgreSQL, MongoDB, Elasticsearch, Delta Lake, AWS Neptune, Neo4j, Flask, Django, FastAPI, CI/CD, GitHub Actions, Terraform, Infrastructure as Code
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1mo
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Principal Software Engineer
Fairfax, Virginia, United States
OnsiteFull Time
Trident Systems
Trident Systems: Develops high-performance electronics for space and defense.
9+ YOEBachelor's in CS/Software Eng/Data Science (or equivalent experience), 9+ years related experience (7+ with graduate degree) with Python, Linux/Windows, databases, JSON/REST, Git/SVN, and production-quality software development.
Python, Linux, Windows, Android, JSON, CSV, XML, REST APIs, sockets, message queues, PostgreSQL, SQLite, InfluxDB, object storage, Git, SVN, Flask, FastAPI, Django, Dash, Docker, CI/CD pipelines
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6d
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Principal Software Developer Engineer
Reston or Austin or Seattle
$115k-$235k/yr OnsiteFull Time
Oracle
OracleNYSE: ORCL: Provides cloud infrastructure and enterprise software for global businesses.
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
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