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Gaithersburg, Maryland

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Today

Leidos is seeking Principal Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems. This work aligns with the FAA's broader initiative to modernize legacy flight service capabilities, replacing aging infrastructure with scalable, cloud-based platforms designed to improve safety and operational efficiency-particularly in remote and high-dependency aviation environments. These effort

Full-time

USD 131,300.00 - 237,350.00 per year

Principal Software Developer - Oracle Health, Platform Engineering- Remote

Remote

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Today

Job Description Oracle Health is transforming the future of healthcare by building secure, scalable, AI-enabled healthcare platforms and applications that improve patient outcomes, reduce administrative burden, and enable healthcare organizations to operate more efficiently. As part of Oracle's broader cloud and AI strategy, Oracle Health combines industry-leading healthcare applications, electronic health records (EHR), healthcare data platforms, and Oracle Cloud Infrastructure (OCI) to create

Full-time

USD 109,700.00 - 234,600.00 per year

[Remote] Principal Software Developer - Oracle Health

Remote

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Today

Job Description At Oracle's Health Data Intelligence and Life Sciences organization, we are focused on transforming healthcare and improving the health of people globally. Whether it is helping bring new therapies to market faster or enhancing care delivery, we are transforming the experience of providers, payers, and life sciences organizations. The data platform team (Oracle Health Data Services - OHDS) is foundational to software products being built and serves the critical role of transform

Full-time

USD 99,600.00 - 223,400.00 per year

[Remote] Principal Software Developer- Agent Toolkits & Cloud Infrastructure, Healthcare AI

Remote

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Today

Job Description Building off our Cloud momentum, Oracle has formed a new organization - Oracle Health & AI. This team will focus on product development and product strategy for Oracle Health, while building out a complete platform supporting modernized, automated healthcare. This is a net new line of business, constructed with an entrepreneurial spirit that promotes an energetic and creative environment. We are unencumbered and will need your contribution to make it a world class engineering ce

Full-time

USD 99,600.00 - 234,600.00 per year

Principal Software Engineer (AI - Assisted Developer Tooling)

Laurel, Maryland

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Today

An active or rein-statable TS/SCI with Polygraph security clearance is REQUIRED. Please do not apply if you currently do not possess this level of clearance. Are you a Principal Software Engineer (AI - Assisted Developer Tooling) who is ready for a new challenge that will launch your career to the next level? Tired of being treated like a company drone?Tired of promised adventures during the hiring phase, then dropped off on a remote contract and never seen or heard from the mothership again?Ou

Full-time

USD 200,000.00 - 280,000.00 per year

Principal Software Developer- C/C++ , Java, Distributed System (Redwood City, CA)

Remote or Redwood City, California

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Today

Job Description We are looking for smart systems software engineers with BS/MS/PhD in Computer Science to join the Exadata Team @ Oracle Server Technologies (;br>Oracle Exadata technology is the newest innovation in Oracle's history as the provider of the industry's number one database technology. Exadata group (Server Technologies Division) is responsible for the development of all aspects of the Exadata Storage Server and Exadata Database Machine which is named as Oracle's most successful new

Full-time

USD 99,600.00 - 223,400.00 per year

Principal Software Engineer

Tysons, Virginia

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Today

Principal Software Engineer - emPower Do you love working with connected devices, automation, and real-world systems? Have you automated your own home, built integrations across smart devices, or thought deeply about how cloud software should control physical systems reliably? Alarm.com is looking for a versatile Principal Software Engineer to help lead architecture and engineering for our emPower team, which builds software for IoT, smart home automation, energy management, HVAC, water, and c

Full-time

Principal Software Engineer

Remote or Bethesda, Maryland

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Today

ZoomInfo is where careers accelerate. We move fast, think boldly, and empower you to do the best work of your life. You'll be surrounded by teammates who care deeply, challenge each other, and celebrate wins. With tools that amplify your impact and a culture that backs your ambition, you won't just contribute. You'll make things happen-fast. About the Role: We are seeking an experienced Principal Software Engineer to lead the design and development of ZoomInfo's customer-facing GraphQL API plat

Full-time

USD 163,800.00 - 257,400.00 per year

Principal Software Engineer (Guest Communications Platform)

Bethesda, Maryland

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Today

Job Description The Principal Engineer, Guest Communications Platform serves as the technical authority and hands-on architectural leader for Marriott's next-generation Guest Communications Platform. This role is responsible for defining, governing, and evolving a cloud-native, event-driven, provider-agnostic communications platform that reliably delivers Email, SMS, Chat, and future channels to Bonvoy members and hotel guests globally. This is a hands-on individual contributor role with broad

Full-time

Principal Software Engineer

Arlington, Virginia

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Today

We are seeking an experienced Principal Software Engineer to join our team in developing the forefront of unmanned and autonomous ship development for the US Government. Based in Arlington, VA, you will be embedded within an Agile Scrum team - designing, building, and testing software that powers some of the nation's most critical maritime programs. The candidate will help to lead projects of significant national importance, guiding the transformation of existing vessels into autonomous platform

Full-time

USD 131,300.00 - 237,350.00 per year

Principal Software Engineer - Data

Remote or Bethesda, Maryland

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Today

ZoomInfo is where careers accelerate. We move fast, think boldly, and empower you to do the best work of your life. You'll be surrounded by teammates who care deeply, challenge each other, and celebrate wins. With tools that amplify your impact and a culture that backs your ambition, you won't just contribute. You'll make things happen-fast. About the Role: We are seeking an experienced Principal Software Engineer (Data) to join our fast-paced, collaborative data team. In this role, you will h

Full-time

USD 163,800.00 - 257,400.00 per year

Principal CNO Software Engineer

Arlington, Virginia

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Today

Principal CNO Software Engineer Zetier is seeking Principal CNO Software Engineers to develop operationally critical cyber capabilities. Candidates will demonstrate practical experience designing, developing, and deploying tools intersecting command and control, persistence, and networking. Required: Highly experienced with low-level programming (C/C++)Experience developing in scripting languages (Python)Highly experienced in systems software development (Linux/Windows kernel drivers)Successful

Full-time

Principal Software Engineer / Tech Lead

Arlington, Virginia

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Today

Join the team transforming secure cloud operations for the future. We're seeking a Principal Engineer / Technical Lead to support the Compartmented Enterprise Services Office (CESO) in Arlington, VA. This effort is building a modern Secure Web Service (SWS) operation on a cutting-edge, highly automated platform designed to support a rapidly expanding customer base. In this role, you'll help drive CESO's migration to a high-security cloud environment, delivering key capabilities such as network

Full-time

USD 131,300.00 - 237,350.00 per year

Senior Principal Software Engineer/ Staff Software Engineer

Bowie, Maryland

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Today

Inovalon was founded in 1998 on the belief that technology, and data specifically, would empower the transformation of the entire healthcare ecosystem for the better, improving both outcomes and economics. At Inovalon, we believe that when our customers are successful in their missions, healthcare improves. Therefore, we focus on empowering them with data-driven solutions. And the momentum is building. Together, as ONE Inovalon, we are a united force delivering solutions that address healthcare

Full-time

USD 222,287.00 - 232,287.00 per year

Principal Software Engineer IV (TS/SCI + Poly)

Fort Meade, Maryland

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Today

How We're Different We believe the highest-impact work in national security and technology is a team sport. At Aperio Global, we operate as a single, cohesive force aligned on a handful of mission-critical efforts where our work truly moves the needle. We don't chase small wins. We solve for next. We view the intersection of cybersecurity, artificial intelligence, and data analytics as an empirical discipline as rigorous and consequential as any field in science or engineering. That means we b

Full-time

USD 207,000.00 - 227,000.00 per year

Principal Software Engineer

Washington, District of Columbia

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Today

With 1,000+ intelligence professionals serving over 1,900 clients worldwide, Recorded Future is the world's most advanced, and largest, intelligence company! Recorded Future is seeking a Principal Software Engineer to join our Engineering team, responsible for building and scaling the pipelines that power the Security Intelligence Graph. As a Principal Software Engineer, you will work across application code and infrastructure to collect, transform, and deliver structured threat data: tracking

Full-time

USD 152,000.00 - 228,500.00 per year

Senior Principal Software Engineer - (Secret Clearance Preferred - Onsite Required)

Oakton, Virginia

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications: Skills: C++ STL, Data ETL, Data Warehouse, Linux Bash, Multithreaded Application Development Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: SOFTWARE ENGINEER SR PRINCIPAL GDIT is seeking a Principal Software Engineer to join our

Full-time

USD 161,500.00 - 218,500.00 per year

Principal DevOps / Software Engineer

Laurel, Maryland

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Today

An active or rein-statable TS/SCI with Polygraph security clearance is REQUIRED. Please do not apply if you currently do not possess this level of clearance. Are you a Principal DevOps / Software Engineer who is ready for a new challenge that will launch your career to the next level? Tired of being treated like a company drone?Tired of promised adventures during the hiring phase, then dropped off on a remote contract and never seen or heard from the mothership again?Our engineers were certainl

Full-time

USD 200,000.00 - 280,000.00 per year

Principal Software Engineer

Remote or Columbia, Maryland

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Today

An active or rein-statable TS/SCI with Polygraph security clearance is REQUIRED. Please do not apply if you currently do not possess this level of clearance. Are you a Principal Software Engineer who is ready for a new challenge that will launch your career to the next level? Tired of being treated like a company drone?Tired of promised adventures during the hiring phase, then dropped off on a remote contract and never seen or heard from the mothership again?Our engineers were certainly tired o

Full-time

USD 190,000.00 - 280,000.00 per year

Principal ServiceNow Developer

Reston, Virginia

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Today

Make your mark at Comcast -- a Fortune 30 global media and technology company. From the connectivity and platforms we provide, to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Become part of our award-winning technology team that turns big ideas into cutting-edge products, platforms, and solutions that our customers love. We create space to innovate, and we recognize, reward, and invest in your ideas, while ensuring you can prou

Full-time

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