Principal Software Engineer
$220k - $280kScience & Technology Research (STR)
Principal Software EngineerArlington, VAAbout The TeamSTR's Intelligence Division researches and develops advanced analytics and machine learning-based solutions to solve challenging problems related to national security. Our team consists of passionate and motivated engineers with advanced degrees in engineering, computer science, mathematics, and data science, who are seeking opportunities to use their deep technical knowledge and creativity to tackle some of the hardest problems that our customers face. Our projects span multiple different data modalities and incorporate advanced algorithms, deep learning, and statistical techniques to uncover patterns in social media, structured and unstructured text, time series, geospatial, and imagery data, and must operate under challenging constraints not typically found in the commercial world. The tools and technologies we develop have real world impact and US Government analysts use them to extract and enrich intelligence information around the globe.The RoleAs a Principal Software Engineer, you will leverage your skills in systems and software development to operationalize advanced statistical machine learning algorithms and support production-level systems. You will work closely with other software engineers and researchers to design cutting-edge solutions to challenging problems impacting national security including classification, anomaly detection, forecasting, and much more. You will also interact with customers to understand requirements and use cases and apply feedback to respond to their most critical problems.Positions are available in both Woburn, MA and Arlington, VA. Due to the nature of our work, applicants should expect to primarily work onsite.What You'll Do:Collaborate to create and maintain software for data pipelines, algorithms, storage, and accessProductize research capabilities with team members into standardized software packagesDeploy new tools and capabilities into operational environmentsMonitor system performance with standardized tools to ensure robustness, system up-time, and reliabilityDevelop and implement software standards across a team of diverse skillsetsWho You Are:Active Secret security clearance, for which U.S Citizenship is needed by the U.S governmentEnjoys working hard and seeing mission impactMotivated collaborator looking to work with a large and distributed teamAbility to lead and direct development initiatives from inception to prototype and productionBS degree with 12 + years of experience in one or more high level programming languages, like Python (equivalent experience considered)Fluent in containerization technologies, such as DockerExperience developing software for big data applicationsExperience with orchestration technologies, such as KubernetesEven Better:Active Top Secret security clearancePossession of Security+ or other certificationsExperience with data engineering tools and standards, such as ETL pipelines, SQL, and database storageExperience with Continuous Integration / Continuous Deployment toolsExperience with user interfaces and APIsExperience with user authentication and access controlsPay InformationFull-Time Salary Range: $220,000 - $280,000The salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate's experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions.
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$172.5k - $313.7k
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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...SuggestedFull time- Arlington, VirginiaHybridFull Time$180k - $200kAn early-stage AI startup is hiring a Principal Software Engineer to join its team. This is a hybrid opportunity based in Herndon, VA.The company is building the platform enterprises use to deploy, monitor, and optimize AI...Suggested
$204k - $284k
...STR is hiring a Principal Software Reverse Engineer who has a passion for research and analysis of vulnerabilities in cyber physical systems. This opportunity will be part of a multidisciplinary team of researchers and engineers dedicated to developing cutting-edge technologies...Full timeWork experience placementLocal areaImmediate startNight shift- ...Principal CNO Software EngineerZetier 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...
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...production at global scale. Foundational Frameworks: Spearhead the engineering of new container runtimes and distributed frameworks to power... ..., collaborate with executives for investment and drive the software design and development for new major data-plane components of...Temporary workWork experience placementWorldwideFlexible hours$150k - $175k
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...Principal Software Engineer Clarity Innovations is a trusted national security partner, dedicated to safeguarding our nation's interests and delivering innovative solutions that empower the Intelligence Community (IC) and Department of Defense (DoD) to transform data...Full time$220k - $372k
...tech stack, this might be the right opportunity for you! As a Principal Engineer in NetApp's Cloud Storage organization, you will lead and... ...Requirements ~ Experience Requirements ~15+ years in software development. ~7+ years hands-on with fault-tolerant, highly...Local area$150k
...Principal Software Engineer at NAVEXAt NAVEX, we're transforming the world—making it safer, more ethical, and ensuring every voice is heard. That's real impact.Our high-performance culture is driven by our values. We move with speed, passion and purpose—as one team. We...$131.3k - $237.35k
...Description 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...Local areaImmediate start- ...Principal Software EngineerDate: Jun 30, 2026 Location: Washington, DC, US, 20001 Philadelphia, PA, US, 19104 Wilmington, DE, US, 19801... ...core Internet technologies and modern full stack software engineering practices. Proficiency in Java, JavaScript, TypeScript, SQL...Hourly payTemporary workWork experience placementFlexible hours
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$196k - $294k
...ABOUT THE TEAM ~ We are seeking a Principal Software Engineer to lead architectural and strategic initiatives for our ArsenalOS Forge platform. You'll be pivotal in evolving Forge's capabilities, driving integration and scalability, and maturing its architecture for...Full timeWork experience placementLocal areaRelocation package$195k - $323k
...products and services that help people, businesses and governments realize their greatest potential. Title and Summary Principal Software Development Engineer Job Overview: Leads major projects and creates the development and delivery of quality software solutions in a...Full timePart timeWorldwideFlexible hours- ...eCommerce with one of the world's largest retailers? Walmart is growing our Marketplace Platform Engineering team and is looking for an experienced Principal Software Engineer to help shape the technology powering millions of customers and thousands of third-party...Full time
- ...their career to new heights. Join the ranks of top talent at one of the world’s most influential companies. As a Senior Principal Software Engineer at JPMorganChase within the CDAO AI/ML Data Platforms Team, you provide deep engineering expertise and work across agile...
$231k
...and have the flexibility, benefits, and support to do their best work. Join us and build for travelers everywhere. Principal Software Development Engineer Expedia Technology teams partner with our Product teams to create innovative products, services, and tools to...- ...Principal Software Engineer Location: Centralia, WA Work Arrangement: Onsite Job Type: Contract Job Summary STAFFXPERT LLC is seeking a Principal Software Engineer on behalf of our client in Centralia, WA We are looking for a highly experienced software...Contract work
$160k - $250k
...moves people. Backed by leading investors, we're building software that adapts to the user, not the other way around. We move... ...best work here. The Role Gradial is seeking a Principal Software Engineer to drive the architecture and technical vision behind AI-native...Full timeWork at officeFlexible hours3 days per week- Principal Software Engineer (Kubernetes) Here at Appian, our core values of Respect, Work to Impact, Ambition, and Constructive Dissent & Resolution define who we are. In short, this means we constantly seek to understand the best for our customers, we go beyond completion...Work at office
$144.2k - $288.4k
...Data, Digital, Analytics, and Technology (DDAT) organization, is seeking a hands-on, passionate, and people-focused Principal Software Development Engineer to join our high-energy, growing team. In this role, you will help make a meaningful difference in the lives of our...Hourly payFull timeTemporary workLocal areaFlexible hours$117.2k - $313.7k
...Agentforce is the future of AI, and you are the future of Salesforce.The ExperienceNote: By applying to the Senior / Lead / Principal Software Engineer - Foundations Team posting, recruiters and hiring managers across the organization hiring software engineers will review...Full timeWork experience placementRemote work$131.3k - $237.35k
...transforming secure cloud operations for the future.We’re seeking a Principal Engineer / Technical Lead to support the Compartmented Enterprise... ..., data pipelines (structured/unstructured)Experience with software development languages/environments such as: JavaScript....Full timeTemporary workWork at office
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