Principal Software Developer
BigBear Inc
Overview Are you ready to take your career to the next level? BigBear.ai is seeking a Principal Software Developer to join our GALE (Generic Area Limitation Environment) Support team. This is your chance to work on impactful projects that directly support the Department of Defense (DoD) and the Intelligence Community (IC). At BigBear.ai, we empower organizations to make sense of their data through cutting-edge technology, transforming massive volumes of structured and unstructured data into actionable insights every single day. As one of the fastest-growing AI/ML companies in the industry, BigBear.ai is more than just a workplace; it’s a community of innovators, problem-solvers, and collaborators. We prioritize growth, recognition, and work-life balance, ensuring our employees thrive both professionally and personally. If you’re looking for a role where your contributions truly matter, we’d love to hear from you! What you will do Innovate and Build: Dive into hands‑on development on a large‑scale codebase, tackling tasks such as processing large datasets within the JavaFX framework, optimizing storage solutions, and integrating external APIs to deliver new features. Collaborate and Connect: Split your time between remote development and working on‑site with customers, ensuring your work has a direct impact. Focus on Engineering: Enjoy a role that prioritizes technical development with minimal administrative overhead or red tape. What you need to have Bachelor’s Degree and 5 to 8 years of experience; Master’s Degree and 3 to 6 years of experience; PhD and 0 to 3 years of experience (in lieu of Bachelor’s degree, 6 additional years of relevant experience) Clearance: Must maintain an active TS/SCI security clearance Proficiency in Java (11+) is preferred Experience with Spring (Boot/Framework/Security) Familiarity with Git source control What we’d like you to have Additional Clearance: Active CI Polygraph. Technical Expertise: Knowledge of JavaFX. Geospatial data experience. Background in math and algorithm creation. Experience with Extract/Transform/Load (ETL) processes. OpenGL experience. Familiarity with Ant and Eclipse. Domain Knowledge: Experience working within the DoD. Streaming data expertise (ideally websocket‑based). Event‑based programming knowledge. Experience with microservices and gateways. Proficiency in working with external APIs. About BigBear.ai Why Join BigBear.ai? At BigBear.ai, we’re not just building software—we’re building solutions that make a difference. We believe in empowering our employees to grow, innovate, and succeed. Here’s what you can expect when you join our team: Growth Opportunities: We invest in your professional development, providing opportunities to learn, lead, and advance your career. Recognition: Your contributions are valued and celebrated. At BigBear.ai, you’re not just a number—you’re a vital part of our success. Work‑Life Balance: We understand the importance of balance and offer a supportive environment that allows you to thrive both at work and at home. Impactful Work: Be part of a team that tackles real‑world challenges, delivering solutions that matter to our customers and the nation. If you’re ready to join a company that values your skills, fosters your growth, and challenges you to innovate, BigBear.ai is the place for you. Let’s build the future together! BigBear.ai is a leading provider of AI‑powered decision intelligence solutions for national security, supply chain management, and digital identity. Customers and partners rely on BigBear.ai’s predictive analytics capabilities in highly complex, distributed, mission‑based operating environments. Headquartered in McLean, Virginia, BigBear.ai is a public company traded on the NYSE under the symbol BBAI. For more information, visit and follow BigBear.ai on LinkedIn: @BigBear.ai and X: @BigBearai. BigBear.ai is an Equal Opportunity Employer of all protected groups, including protected veterans and individuals with disabilities. #J-18808-Ljbffr BigBear Inc
$96.8k - $223.4k
...technical problems, and mentor engineers while continuing to deepen your own technical expertise. Responsibilities As a Principal Software Developer, you will lead the design, development, and evolution of backend services, APIs, and core server-side systems that...SuggestedTemporary workWork at officeRemote workWorldwideRelocationRelocation packageFlexible hours$200k - $280k
...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...SuggestedFull timeContract workRemote workWork from homeRelocation package$135.2k - $306.4k
...We want someone comfortable working in complex, fast-changing software development environments. We value experience working with geographically... ...for someone with strong mentorship ability who can guide and develop engineers toward shared goals. Responsibilities: We will...SuggestedFull timeWorldwideFlexible hours$272k - $431.25k
...compute budget of any single GPU, this platform enables efficient, resilient deployment of cutting-edge LLM workloads.We are seeking a Principal Systems Engineer to define the vision and roadmap for memory management of large-scale LLM and storage systems.What you'll be...SuggestedFull timeLocal areaRemote work$131.3k - $237.35k
Leidos has an exciting opportunity for a Principal Software Engineer in our Intel Security Sector's Analysis Solutions Business Area. Our talented... ...using Java, JavaScript, Python, SpringBoot, and Hibernate.Develops software system validation and testing methods using Junit...SuggestedFull timeImmediate startFlexible hours$131.3k - $237.35k
Leidos has a new and exciting opportunity for a Principal Biometrics Software Engineer in our Intel Security Sector's Analysis Solutions Business... ...and systems using provided SDKs and APIs.API Development: Develop and maintain application programming interfaces (APIs) for...Full timeImmediate startFlexible hours$147k - $237.5k
...in the United States*We’re looking for a Principal Escalation Engineer to serve as a key... ...You Bring8+ years of experience in the software industry (Technical Support, R&D, or Sustaining... ...Manager on a use case or guide a developer on a logging standard with equal confidence...Full timeWork at officeImmediate startShift work$154.05k - $278.48k
...technology-enabled services and mission software capabilities in the areas of cyber, logistics... ...the OpportunityLeidos is seeking a Principal Software Engineer to provide advanced software... ...mission software systems. You will develop, maintain, integrate, and enhance...Full time$13 per hour
...Be DoingWe are seeking a highly experienced Senior, Lead, and Principal Engineers to serve as a key individual contributor across the... ...solutions that meet business needsBuild and ship production-grade software using modern engineering practices, with AI as a core part of...Full time$200k - $280k
...currently do not possess this level of clearance.*** Are you a Principal Full Stack Software Engineer who is ready for a new challenge that will launch... ...will immerse you in the latest technologies. We will develop and support your own personalized training program to...Full timeContract workRemote workWork from homeRelocation package$195k - $323k
...Principal Software Development EngineerMastercard powers economies and empowers people in 200+ countries and territories worldwide. Together... ...innovative solutions and drive strategic decisions. Develop business case in alignment with the MasterCard objectives. Lead...Full timePart timeWorldwideFlexible hours- ...Principal Software EngineerMastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our... ...capabilities.Design and implement large scale distributed systems.Develop reusable services, patterns, and integrations.Contribute to...Full timePart timeWorldwideFlexible hours
$197k - $358.5k
...location three times a week, at minimum. The Role: As a Principal Software Engineer, you will be responsible for executing the plan for... ...on time. In this technical leader role, you will help develop and lead strategic action plans to support business goals. Embrace...Full timeWork experience placementLocal areaRemote workWork from homeRelocationRelocation packageFlexible hours$135.2k - $306.4k
...plane level and performance problems. You should be a rock-solid developer able to dive deep into low-level systems, design broad... ..., and customer experience. Responsibilities As a Senior Principal Engineer, you will lead the design and implementation of comprehensive...Temporary workWorldwideFlexible hours$144.2k - $288.4k
...organization, is seeking a hands-on, passionate, and people-focused Principal Software Development Engineer to join our high-energy, growing team.... ...join a high-performing architecture team responsible for developing a cloud-native platform designed to transform healthcare...Hourly payFull timeTemporary workLocal areaFlexible hours$114.6k - $234.6k
...team Responsibilities Responsibilities Design and build scalable advertising infrastructure for live and linear streaming Develop server-side and client-side ad insertion capabilities Integrate ad systems with playback, CDN, and delivery pipelines...Temporary workFlexible hours- ...Principal Software EngineerDate: Jun 30, 2026 Location: Washington, DC, US, 20001 Philadelphia, PA, US, 19104 Wilmington, DE, US, 19801 Company... ...solutions to software applications to meet business needs.Develop or enhance software applications, ensuring solutions are...Hourly payTemporary workWork experience placementFlexible hours
$204k - $284k
...STR is hiring a Principal Software Reverse Engineer who has a passion for research and analysis of vulnerabilities in cyber physical systems... ...team of researchers and engineers dedicated to developing cutting-edge technologies with significant and immediate impact...Full timeWork experience placementLocal areaImmediate startNight shift$144.2k - $288.4k
...community at a time. Position Summary We are hiring a Principal Software Engineer - a deeply hands-on technical leader who thrives... ...MLOps, monitoring, retraining, deployment pipelines) ~3+ years developing LLM-powered applications in production, including prompt...Hourly payFull timeTemporary workLocal areaFlexible hours$200k - $280k
...currently do not possess this level of clearance. Are you a Principal Software Engineer who is ready for a new challenge that will launch... ...We will immerse you in the latest technologies. We will develop and support your own personalized training program to continue...Full timeContract workRemote workWork from homeRelocation packageFlexible hours- ...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...
$195k - $323k
...governments realize their greatest potential. Title and Summary Principal Software Engineer About Mastercard Mastercard is a global... ...Design and implement large scale distributed systems. - Develop reusable services, patterns, and integrations. -...Full timePart timeRemote workWork from homeWorldwideFlexible hours$131.3k - $237.35k
...Description Leidos has an exciting opportunity for a Principal Software Engineer in our Intel Security Sector's Analysis Solutions... ...using Java, JavaScript, Python, SpringBoot, and Hibernate. Develops software system validation and testing methods using Junit and...Local areaImmediate startFlexible hours- ...data volumes and associated costs by 84% on average while saving developers thousands of hours. Recognized as a leader by major analyst... ...evaluate engineering trade-offs directly.Familiarity with enterprise software and the expectations security-conscious customers place on...Full timeLive inRemote workVisa sponsorshipWork visaFlexible hours
$200k - $280k
...Principal Software Engineer Opportunity***An active or rein-statable TS/SCI with Polygraph security clearance is REQUIRED. Please do not apply... ...". We will immerse you in the latest technologies. We will develop and support your own personalized training program to...Full timeContract workRemote workRelocation package$200k - $280k
...Principal DevOps / Software Engineer***An active or rein-statable TS/SCI with Polygraph security clearance is REQUIRED. Please do not apply if... .... We will immerse you in the latest technologies. We will develop and support your own personalized training program to continue...Full timeContract workRemote workRelocation package$163.8k - $257.4k
...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 have broad authority to drive the direction...Worldwide$61k - $101k
..., or Rust ~ Proven ability to influence across functions and teams while delivering value at scale ~ Hands-on experience with software-defined networking technologies such as OVN, OVS, or similar ~ Advanced knowledge of networking fundamentals, including TCP/IP,...Full time- ...financial institutions, you’ve come to the right place. As a Principal Software Engineer at JPMorganChase within the Core Foundational... ...firm’s portfolios. You will lead virtual and direct teams of developers, teaching them best practices in high-performance computing...
$200k - $250k
...Job Description Job Description Principal Software Engineer — emPower Do you love working with connected devices, automation, and real... ...or codebase. ~ Experience mentoring engineers and helping develop people, practices, and reusable technical solutions. ~...Casual workWork at officeImmediate startWorldwide
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