Principal Software Engineer (Python) CotalityPrincipal Software Engineer (Python)Irvine, CaliforniaEstablish Systematic Evaluation: Collaborate with Knowledge Engineering and Data Science teams to replace "vibe checks" with rigorous automated testing frameworks, utilizing metrics like Faithfulness, Answer Relevance, and Context Precision (RAGAS) to ensure quality during rapid scaling. Model Optimization (LLM & SLM): Partner with the Data Science team to architect intelligent routing logic that leverages Small Language Models (SLMs) for high-speed classification/extraction and Large Language Models (LLMs) for complex synthesis.
Sr Principal Mechanical Engineer Samson RoseSr Principal Mechanical EngineerEl Segundo, California$180,000–$260,000 / yearThe company is looking for engineers who bring deep technical expertise but also understand the realities of deploying hardware in demanding operational environments—engineers who can identify what they don't know, learn from real-world integration challenges, and make sound engineering decisions under uncertainty. The role offers exposure to system architecture, mechanical design, hardware integration, environmental qualification, supplier development, testing, and production , with the opportunity to influence both current programs and the engineering practices used on future platforms.
Principal Hardware Engineer – TeraWave Network Switch Platform Blue OriginPrincipal Hardware Engineer – TeraWave Network Switch PlatformLos Angeles, WashingtonBlue Origin's Emerging Systems business unit is building TeraWave, a satellite communications constellation powered by the most advanced optical communications architecture ever attempted: thousands of optically interconnected satellites delivering symmetrical data speeds of up to 6 Tbps anywhere on Earth, providing enterprise and hyperscale customers with resilient, scalable connectivity for critical operations where terrestrial infrastructure cannot reach. and/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training.
NewPrincipal Engineer, NPD Edwards LifesciencesPrincipal Engineer, NPDIrvine, California$121,000–$171,000 / yearFor California (CA), the base pay range for this position is $121,000 to $171,000 (highly experienced).The pay for the successful candidate will depend on various factors (e.g., qualifications, education, prior experience).Applications will be accepted while this position is posted on our Careers website. Edwards' groundbreaking work in transcatheter aortic heart valve replacement (TAVR) pioneered an innovative, life-changing solution for patients by offering heart valve replacement without the need for open heart surgery.
Principal Engineer, Roads & Highways SidaraPrincipal Engineer, Roads & HighwaysLos Angeles, CaliforniaWorking in close partnership with Irvine office leadership and regional/national practice leaders, this position will help scale TYLin’s presence, revenue, and influence across the Southern California market. Initial priorities include expanding and deepening relationships with LA Metro, Los Angeles County Public Works, and major cities and counties throughout Southern California—particularly in Orange County.
Principal Embedded Software Engineer Silvus TechnologiesPrincipal Embedded Software EngineerLos Angeles, CaliforniaLead the architectural design and development of highly efficient low-latency embedded firmware on ARM-based SoCs (e.g., UltraScale+), and optimizing Linux-based networking stacks for wireless applications. Silvus Technologies , a leading provider of advanced MANET and MIMO communications systems, is reshaping mesh network technology for mission-critical applications – on the ground, in the air and at sea.
Principal Power Electronics Engineer II CesiumAstroPrincipal Power Electronics Engineer IIEl Segundo, CA$217,000–$266,000 / yearDesign elements and responsibilities will include isolated and non-isolated DC-DC converters, maximum power point tracking solar power converters, magnetics design and analysis, system-level power management and distribution design, point-of-load regulators, switching and linear regulators, filters, and stability analysis and measurement. As a principal engineer on the hardware team, you will be responsible for hardware designs from concept through production, including product roadmaps, block diagrams, part selection, schematic design, PCB layout and routing, analysis, manufacturing (working with contract manufacturers), test, qualification, and in-orbit support.
Principal Software Engineer (Remote) RulaPrincipal Software Engineer (Remote)Los Angeles, CaliforniaRemoteThis person will be the technical anchor for the Patients Group, owning the systems that power the entire patient lifecycle—from initial signup, registration, and intelligent appointment scheduling, all the way through to pre- and post-visit experiences. If you are passionate about building highly reliable consumer funnels, moving beyond simple AI prompting to build observable, cost-efficient systems, and elevating the engineering culture at a staff/principal level, this is the role for you.
Electrical Engineer (Senior - Principal), Harness True AnomalyElectrical Engineer (Senior - Principal), HarnessLong Beach, CA$135,000–$275,000 / yearExcellent written and verbal communication skills, including experience shaping cross-org alignment and maintaining composure and clarity under program pressure and influencing executive leadership on technical strategy, investment priorities, and organizational direction. Embed True Anomaly's values into cross-org delivery practices; serve as a visible role model for trust, accountability, and principled engineering judgment while setting the cultural tone for how teams collaborate and hold themselves accountable.
Principal Build & Integration Engineer K2 SpacePrincipal Build & Integration EngineerLos Angeles, CaliforniaEngineered to survive the harshest radiation environments and to fully capitalize on today's and tomorrow's massive rockets, K2 satellites deliver unmatched capability at constellation scale and across multiple orbits. The person hired for this role will have access to information and items controlled by U.S. export control regulations, including the export control regulations outlined in the International Traffic in Arms Regulation (ITAR).
Principal Application Software Engineer K2 SpacePrincipal Application Software EngineerLos Angeles, CaliforniaEngineered to survive the harshest radiation environments and to fully capitalize on today's and tomorrow's massive rockets, K2 satellites deliver unmatched capability at constellation scale and across multiple orbits. Rowe Price — and with over $1 billion in signed contracts across commercial and US government customers, we're mass-producing the highest-power satellite platforms ever built for missions from LEO to deep space.
Principal Engineer - TS/SCI Clearance Rocket Lab USAPrincipal Engineer - TS/SCI ClearanceLong Beach, California$180,000–$260,000 / yearFull timeImportant 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. Under these Regulations, you may be ineligible for this role if you do not hold citizenship of Australia, Japan, New Zealand, Switzerland, the European Union, or a country that is part of NATO, or if you hold ineligible dual citizenship or nationality.
Principal Electric Propulsion Engineer Rocket Lab CorporationPrincipal Electric Propulsion EngineerLong Beach, CA$162,000–$270,000 / yearTo 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. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more.
Principal II, Network Engineer HerbalifePrincipal II, Network EngineerTorrance, CaliforniaFull timeComprehensive knowledge includes solutions analysis, design, deployment, and operationalization in the following areas: o Cloud Edge Networking and Software Defined WAN (SD-WAN), Automation, Data Center. Group Health Programs include Medical, Dental, Vision, Health Savings Account (HSA), Flexible Spending Accounts (FSA), Basic Life/AD&D; Short-Term and Long-Term Disability, and an Employee Assistance Program (EAP).
Principal Software Engineer, Ads Format, Level 7 SnapchatPrincipal Software Engineer, Ads Format, Level 7Los Angeles, CA$276,000–$414,000 / yearMinimum Qualifications: 10+ years of post-Bachelor's software development experience; or a Master's degree in a technical field + 9+ year of post-grad software development experience; or a PhD in a related technical field + 6+ years of post-grad software development experience. The Company operates Snapchat, a visual messaging app that enhances your relationships with friends, family, and the world, and Specs Inc., a wholly-owned subsidiary dedicated to making computing more human, in addition to Bitmoji, Saturn, and other digital services.
Principal Spacecraft GNC Engineer - Secret Clearance Rocket Lab USAPrincipal Spacecraft GNC Engineer - Secret ClearanceLong Beach, CA$195,000–$295,000 / 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. Our Space Systems team builds everything from complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space, like solar panels, flight software, star trackers, optical systems, separation systems, radios, and more.
Senior Spacecraft Operations Engineer II/Principal - Secret Clearance Rocket Lab CorporationSenior Spacecraft Operations Engineer II/Principal - Secret ClearanceLong Beach, CA$173,000–$231,000 / yearThorough understanding of key spacecraft subsystems and associated components, including attitude determination and control systems (ADCS), electrical power systems (EPS), space-to-ground communications, command and data handling (C&DH), thermal control systems (TCS), spacecraft propulsion systems, and fault detection, isolation, and recovery (FDIR). 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.
Principal Software Engineer - Ad Experiences The Walt Disney CompanyPrincipal Software Engineer - Ad ExperiencesGlendale, CaliforniaThe Ad Experiences Fleet aims to unleash the magic of Disney by leveraging cutting-edge creative tools and fostering creative innovation to craft captivating, interactive ad experiences that deeply resonate with consumers and deliver superior value for our advertisers while enhancing the viewer experience to maximize revenue. Disney Entertainment and ESPN Product & Technology is a global organization of engineers, product developers, designers, technologists, data scientists, and more – all working to build and advance the technological backbone for Disney’s media business globally.
Senior/Principal Graphics Engineer thatgamecompanySenior/Principal Graphics EngineerLos Angeles, CaliforniaRemote$150,000–$220,000 / yearYou’ll collaborate with fellow engine team members as well as gameplay engineers, artists and designers to bring the highest quality game experience to players on all supported devices — regardless of platform or performance tier. Applicants must be authorized to work for any employer in the U.S. Unfortunately, We are unable to sponsor or take over sponsorship of an employment Visa at this time .The salary range for this position is $150,000.00 USD to $220,000.00 USD annually, with the opportunity to earn an annual discretionary bonus.
Principal Integration & Test Engineer K2 SpacePrincipal Integration & Test EngineerLos Angeles, CaliforniaEngineered to survive the harshest radiation environments and to fully capitalize on today's and tomorrow's massive rockets, K2 satellites deliver unmatched capability at constellation scale and across multiple orbits. Rowe Price — and with over $1 billion in signed contracts across commercial and US government customers, we're mass-producing the highest-power satellite platforms ever built for missions from LEO to deep space.