Senior Principal Software Engineer - TS/SCI Rocket Lab CorpSenior Principal Software Engineer - TS/SCILong Beach, CA$198,000–$297,000 / yearImportant information: FOR CANDIDATES SEEKING TO WORK IN US OFFICES ONLY: To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Rocket Lab's Space Systems team is responsible for every satellite and satellite component made by Rocket Lab: from complete satellites destined for missions to the Moon and Mars, to the individual components and subsystems that make up a satellite like solar panels, flight software, reaction wheels and star trackers, separation systems, radios, and more.
Principal Software Engineer - Developer Connections Riot Games IncPrincipal Software Engineer - Developer ConnectionsLos Angeles, CAThe ideal candidate possesses deep, firsthand experience with game shipping mechanics-including clients, servers, services, content, publishing constraints, and first-party requirements (console or mobile experience is a major plus)-and will leverage this expertise to drive sound technical decisions and improve how Riot delivers games globally. In this highly collaborative, game-facing role, you will partner closely with Release Team leadership and game teams across Riot to shape technical direction, bring clarity to complex release challenges, and build trust across partner teams.
Principal Software Engineer (Platform Team) SpaceXPrincipal Software Engineer (Platform Team)Hawthorne, CA$200,000–$285,000 / yearBachelor’s degree in computer science, computer engineering, or other engineering discipline and 7+ years of professional experience building and scaling production platforms; OR 9+ years of professional experience building and scaling production platforms in lieu of a degree. This team creates secure, scalable gateways and proxy systems that allow engineers and operators across the company to write code faster, perform advanced data analysis, connect AI to their daily tools and problems, and turn ideas into deployed solutions with confidence.
NewPrincipal Software Engineer (Platform Team) Space Exploration TechnologiesPrincipal Software Engineer (Platform Team)Hawthorne, CA$200,000–$285,000 / yearBASIC QUALIFICATIONS: Bachelor's degree in computer science, computer engineering, or other engineering discipline and 7+ years of professional experience building and scaling production platforms; OR 9+ years of professional experience building and scaling production platforms in lieu of a degree. This team creates secure, scalable gateways and proxy systems that allow engineers and operators across the company to write code faster, perform advanced data analysis, connect AI to their daily tools and problems, and turn ideas into deployed solutions with confidence.
Principal Software Engineer Siemens AGPrincipal Software EngineerCosta Mesa, CARemote$165,220–$283,234 / yearYou'll make an impact by:Define and evolve the technical architecture across core systems and products Provide hands-on technical leadership on strategic projects Lead technical reviews and mentor engineers across all levels Align engineering direction with product and ML research priorities Identify and address scaling challenges before they become bottlenecks Champion engineering excellence, reliability, and system sustainabilityTechnologies We UseLanguages: Python, Go, TypeScript ML: PyTorch, HuggingFace, ONNX Runtime, LangChain Infrastructure: AWS, Kubernetes, Redis, Postgres, S3, Terraform DevOps & Observability: GitHub Actions, Datadog, Grafana, PrometheusWe do not expect deep experience with every tool, but we are looking for engineers who have repeatedly solved difficult problems at scale, and who know how to make good technical decisions under uncertainty. You will win us over by having the following qualifications:Basic Qualifications10+ years of professional software development experience Experience designing and scaling distributed systems and real-time applications Proven ability to lead technical strategy and cross-team architecture efforts Proficiency in at least one backend systems language (e.g., Python, Go, Java) Strong understanding of system design, performance optimization, and fault-tolerancePreferred QualificationsExperience bridging machine learning research and production environments Background in building systems that operate in or interact with the physical world Ability to influence engineering orgs and contribute to hiring and culture Track record of mentoring senior and staff-level engineersAbout the Team: We are an early-stage engineering team solving hard technical problems at the intersection of AI, systems, and real-world interaction.
Principal Software Engineer CVS Health CorpPrincipal Software EngineerCA$144,200–$288,400 / yearOperating as both a senior individual contributor and technical leader, you will partner closely with product, architecture, and engineering leadership to make pragmatic, high‑impact design decisions that balance speed, quality, and long‑term maintainability. Partner with teams and serve as subject matter expert to provide benchmarked solutions to multiple, complex technical projects/initiatives within own area of expertise and organize cross-departmental application architectural solutions.
Principal Software Engineer, Application Access Governance SaviyntPrincipal Software Engineer, Application Access GovernanceEl Segundo, CAIn a world of digital transformation, where organizations are faced with increasing cyber risk but cannot afford defensive measures to slow down progress, Saviynt’s Enterprise Identity Cloud gives customers unparalleled visibility, control and intelligence to better defend against threats while empowering users with right-time, right-level access to the digital technologies and tools they need to do their best work. Strong Experience as a Java Engineer developing applications based on Security principles, cloud platforms (AWS, Azure, or Google Cloud) and Containerization (Docker, Kubernetes) .
Principal Software Engineer Mach IndustriesPrincipal Software EngineerHuntington Beach, CAThis senior position demands exceptional technical expertise, strategic thinking, and strong ownership as you lead complex initiatives across the full software stack - from low-level firmware to high-level mission systems - in a fast-paced, high-stakes environment. Mentor and guide senior and junior engineers, promote engineering excellence, and contribute to agile processes by communicating technical vision, risks, and trade-offs to leadership and stakeholders.
Principal / Sr. Principal Engineer Software Quality Northrop Grumman CorpPrincipal / Sr. Principal Engineer Software QualityWoodland Hills, CA$103,600–$155,400 / yearBasic Qualifications for Principal Engineer Software Quality: Bachelor's Degree in Engineering or other STEM-related field with a minimum of 5 years of relevant software development integration work experience; Master's Degree in Engineering or other STEM-related field with a minimum of 3 years of relevant software development and integration work experience. Principal Engineer Software Quality: Bachelor's Degree in Engineering or other STEM-related field with a minimum of 8 years of relevant software development integration work experience; Master's Degree in Engineering or other STEM-related field with a minimum of 6 years of relevant software development and integration work experience.
Senior Principal Software Engineer - TS/SCI Rocket Lab CorporationSenior Principal Software Engineer - TS/SCILong Beach, CA$198,000–$297,000 / yearRocket Lab's Space Systems team is responsible for every satellite and satellite component made by Rocket Lab: from complete satellites destined for missions to the Moon and Mars, to the individual components and subsystems that make up a satellite like solar panels, flight software, reaction wheels and star trackers, separation systems, radios, and more. To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable.
NewPrincipal Software Engineer, CDN Starlink Space Exploration Technologies CorpPrincipal Software Engineer, CDN StarlinkHawthorne, CA$255,000–$340,000 / yearITAR REQUIREMENTS: To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. You may also be eligible for long-term incentives, in the form of company stock, stock options, or long-term cash awards, as well as potential discretionary bonuses and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan.
Principal Software Engineer, Core Services Frontline Technologies Group LLCPrincipal Software Engineer, Core ServicesCA$160,000–$185,000 / yearSuccess in this role means learning what matters most to internal product teams and the schools they serve, earning trust through reliable platform capabilities, and solving for sustainable outcomes rather than isolated technical requests. Your work will enable product teams to deliver reliable customer outcomes more efficiently and consistently, helping educators and administrators spend less time navigating complexity and more time supporting their schools and students.
Principal Software Engineer, Copilot Code Review GitHub IncPrincipal Software Engineer, Copilot Code ReviewCA$160,200–$425,000 / yearOR Associate's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 10+ years' experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python. OR Master's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 7+ years' experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python.
Principal Software Engineer Global Healthcare Exchange, LLCPrincipal Software EngineerCA$150,000–$214,000 / yearGHX is a healthcare business and data automation company, empowering healthcare organizations to enable better patient care and maximize industry savings using our world class cloud-based supply chain technology exchange platform, solutions, analytics and services. This individual will be experienced in cloud-native architectures, distributed systems, CI/CD, and modern AI-assisted engineering practices, with a passion for leading by example through active contribution to design and development, delivering end-to-end, innovative, high-quality solutions.
Principal Software Engineer TubeScience-LabsPrincipal Software EngineerLos Angeles, California$120,000–$180,000 / yearTubeScience is Meta's largest creative partner and AppLovin's #1 creative partner, producing 8,000+ original ads every month from a 100,000 sq ft Los Angeles studio, backed by a library of 1.6 million+ performance ads and $2B in annual managed ad spend. Working as a Principal Software Engineer at TubeScience Labs, you will be making direct contribution to our Flawless platform, which processes advertisement assets and allows creatives to easily control every aspect of the ad production pipeline, from ideation to publication.
Principal Software Engineer, Mobile ServiceTitan IncPrincipal Software Engineer, MobileCA$263,800–$395,600 / yearSupport for Titans at all stages of life: Parental leave and support, up to $20k in fertility services (i.e. IUI and IVF), surrogacy, and adoption reimbursement, on demand maternity support through Maven Maternity, free breast milk shipping through Maven Milk, pet insurance, legal advisory services, financial planning tools, and more. Expert-level knowledge of native iOS development (Swift, UIKit/SwiftUI, Xcode) and/or native Android development (Kotlin, Jetpack, Android Studio) - deep expertise in one platform with strong working knowledge of the other.
Principal Software Engineer, Connectors Saviynt IncPrincipal Software Engineer, ConnectorsLos Angeles, CA$225,000–$245,000 / yearThis role provides technical leadership and deep expertise in complex engineering domains, driving architectural decisions and ensuring scalability, reliability, and quality across critical platform components. Experience in designing and building AI-driven agents and automation tools to support various stages of the software development lifecycle, including code generation, debugging, testing, documentation, incident analysis, and knowledge retrieval.
NewPrincipal Software Engineer, Close FloqastPrincipal Software Engineer, CloseLos Angeles, CA$185,000–$301,000 / yearCross-Functional Partnership: You'll act as the bridge between "what's possible" and "what's needed," partnering deeply with Product and Design to translate ambiguous business goals into executable technical roadmaps for intuitive, agentic accounting automation. You don't build for the sake of complexity; you build to drive business impact, solve real customer pain points, and empower accounting teams to automate rules-based workflows.
Principal Software Engineer Freeform Future CorpPrincipal Software EngineerLos Angeles, CA$200,000–$400,000 / yearAs a Principal Software Engineer, you will act in a technical leadership capacity responsible for driving innovative development efforts across our broad software ecosystem including edge computing, hardware control and automation, and high-rate telemetry systems. Ultimately, your contributions will result in the deployment of highly sophisticated software platforms capable of processing petabytes of high-rate data on the edge and automating factory systems around the world.
Sr Principal Engineer Software - Embedded and Real Time Northrop Grumman CorpSr Principal Engineer Software - Embedded and Real TimeEl Segundo, CABasic Qualifications: Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline and 8 years of related engineering experience; OR a Master's degree in a STEM discipline and 6 years of related engineering experience; OR a PhD in a STEM discipline and 4 years of related engineering experience. The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate''s experience, education, skills and current market conditions.