Principal, Software Engineer Alcon ResearchPrincipal, Software EngineerLake Forest, CaliforniaCollaborate closely with the software development teams, Technical Support, Field Service, Manufacturing, Clinical and other operation organizations to support necessary software changes initiated by reported anomalies, changes in use cases, material or hardware changes that impact software, cybersecurity, regulatory updates, and other. The Principal Software Engineer collaborates closely with onshore and offshore development and V&V teams throughout the software development lifecycle, providing technical inputs for testing, validating software modifications, supporting troubleshooting activities, and maintaining software configuration management.
Principal Opto-Mechanical Engineer Alcon ResearchPrincipal Opto-Mechanical EngineerLake Forest, CaliforniaApply in-depth knowledge of Opto-Mechanical Engineering in Ophthalmic related Diagnostic & Visualization surgical instrumentation domain as SME across a range of engineering disciplines including, Mechanical Design, Opto-mechanics, Optics, Fiber Optics, Material Science, Precision Machining, Imaging, Illumination, Microscope and Optical Systems Design. Perform Opto-mechanical design including lens barrel and lens housing design, lens bonding and mounting techniques, and opto-mechanical analysis including thermal, environmental, shock & vibration, system integration and stability tolerance study.
Principal Propulsion Engineer, Engine Systems & Test Relativity SpacePrincipal Propulsion Engineer, Engine Systems & TestLong Beach, CA$185,000–$277,000 / yearAny unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role. In engineering at the system level, you will be expected not just to coordinate & facilitate amongst other technical teams, but to bring your own deep technical acumen to bear on problems in this highly technical role.
Principal Software Engineer (Medical Device Software/C#, .NET, Windows) Alcon ResearchPrincipal Software Engineer (Medical Device Software/C#, .NET, Windows)Lake Forest, CaliforniaYou will work closely with systems engineering, hardware, quality, regulatory, and product management teams to ensure that software solutions meet performance, reliability, cybersecurity, and regulatory requirements for medical devices onsite in Lake Forest, CA . As a Principal Software Engineer, you will serve as a technical leader responsible for architecting, designing, and developing complex Windows-based software applications that support Alcon's next-generation ophthalmic diagnostic and surgical medical devices.
Principal Digital Design Engineer GreenWave RadiosPrincipal Digital Design EngineerIrvine, California$190,000–$225,000 / yearOur cutting-edge solutions, powered by the Hermes64 RF SoC, are designed to enhance network energy efficiency while dramatically reducing operational expenses, with purpose-built silicon that is the heart of ORAN-based active antenna arrays. You’ll own everything from architecture through production—defining features, authoring device specifications, and driving the design flow for high-performance programmable logic with embedded Linux-based wireless communications software.
Ednovate, Principal-In-Residence Edgility SearchEdnovate, Principal-In-ResidenceLos Angeles, CA$115,000–$125,000 / yearMission-driven professional passionate about increasing college attainment for historically under-represented students; Social justice champion committed to promoting educational opportunity for all students and families; Entrepreneurial spirit who thrives in a workplace characterized by autonomy, flexibility, transparency and accountability; Collaborative team player who works well with others from diverse backgrounds, uplifts and celebrates our teammates and engages in healthy debate and feedback to get the best results for students and families; Resourceful, persistent learner with a growth mindset, constantly seeking to “find a way or make one” to master your craft and improve results. Bachelor degree, required; 2+ years of K-12 school leadership experience with a strong track record of improving student outcomes in academics, culture, and engagement, required; experience working in charter schools and/or high school, strongly preferred; 2+ years of experience managing and coaching adults towards ambitious results, required; Clear and compelling connection to Los Angeles, preferred; A California Administrative Credential, Single Subject Teaching Credential or Out of State Teaching Credential, preferred.
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 Supplier Quality Engineer CesiumAstroPrincipal Supplier Quality EngineerEl Segundo, CA$143,000–$175,000 / yearPlease Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. Establish and analyze supplier performance metrics including defect rate, nonconformances, on-time delivery, cost of rework/scrap, and supplier corrective action resolution.
Principal Customer Service Engineer CadencePrincipal Customer Service EngineerIrvine, CA$92,400–$171,600 / yearCadence's Physical Systems Design & Analysis group is seeking a Principal Customer Service Engineer (Principal CSE) to support our Finite Element Analysis (FEA) and Virtual Manufacturing & Costing (VMC) team. This role is ideal for an experienced simulation engineer who enjoys solving complex customer problems, leading technical engagements, and contributing to both project delivery and presales activities.
Senior Full Stack Principal - Irvine, CA - Only W2 - (JK) Central Business SolutionsSenior Full Stack Principal - Irvine, CA - Only W2 - (JK)Irvine, CaliforniaCollaborate with business and technical stakeholders to deliver aviation-specific solutions. Guide development teams and ensure scalable, secure, and high-performance applications.
Principal GNC Engineer, Responsive Space (Top Secret Clearance) Impulse SpacePrincipal GNC Engineer, Responsive Space (Top Secret Clearance)Redondo Beach, CA$230,000–$270,000 / yearThis position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. Participate in vehicle-level hardware and software design reviews and trade studies, coordinating GNC needs to cross-discipline teams.
Tax Principal UHYTax PrincipalIrvine, CaliforniaYour extensive experience in tax advisory, team leadership, and business development will play a pivotal role in elevating our firm's reputation as a premier tax service provider. UHY is one of the nation’s largest professional services firms providing audit, tax, consulting and advisory services to clients primarily in the dynamic middle market.
Principal AI Engineer – Agentic AI / Generative AI | Irvine, CA (Hybrid) | Contract to Hire | AS Central Business SolutionsPrincipal AI Engineer – Agentic AI / Generative AI | Irvine, CA (Hybrid) | Contract to Hire | ASIrvine, CaliforniaThis role requires a highly experienced AI engineer with deep expertise in Large Language Models (LLMs), AI Agents, Multi-Agent Systems, Retrieval-Augmented Generation (RAG), and cloud-native AI architectures. You will drive the architecture, development, deployment, and optimization of intelligent AI agents that automate complex business workflows, power enterprise copilots, and integrate seamlessly with enterprise platforms.
Federal Compliance Analyst, Principal Orange County Transportation AuthorityFederal Compliance Analyst, PrincipalOrange, CaliforniaBachelor’s degree in Planning, Finance, Public Administration, Business Administration, Management, Political Science, Law, or a related field, or equivalent combination of education and experience. Minimum five (5) years of related experience in compliance, grants administration, auditing, regulatory affairs, public administration, or a related field.
Principal Engineer - Infinity Ward - Temporary ActivisionPrincipal Engineer - Infinity Ward - TemporaryWoodland Hills, CA$171,100–$316,576 / yearPriorities can often change in a fast-paced environment like ours, so this role includes, but is not limited to, the following responsibilities: Design and implement cutting edge core systems that either provide new functionality or improve the efficiency of our existing code base. As a leading worldwide developer, publisher and distributor of interactive entertainment and products, our "press start" is simple: delight hundreds of millions of players around the world with innovative, fun, thrilling, and engaging entertainment experiences.
Principal, Capital Markets and Strategy Harbinger MotorsPrincipal, Capital Markets and StrategyGarden Grove, CaliforniaHarbinger may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law. Harbinger may share your Candidate Personal Data with (i) internal personnel who have a need to know such information in order to perform their duties, including individuals on our HR, legal, and finance teams, and the team(s) with the position(s) for which you are applying; (ii) Harbinger affiliates; and (iii) Harbinger’s service providers, including providers of background checks, staffing services, and cloud services.
Senior/Principal Mission Software Engineer HermeusSenior/Principal Mission Software EngineerLos Angeles, CA$128,250–$156,750 / yearAbout The Role: The Mission Systems Engineering team develops the Mission Management System-the software platform connecting mission subsystems, autonomy services, operator interfaces, communications links, and telemetry across Hermeus aircraft and ground systems. Preferred Skills and Experience: Experience with mission systems, command-and-control software, mission planning, ground-control systems, autonomy platforms, or operator-facing applications.
NewPrincipal, Software Architect CoreLogicPrincipal, Software ArchitectIrvine, CAThe ideal individual must possess outstanding communication abilities to oversee a development team and liaise with business stakeholders, conveying and advocating for both functional and solution ideas, ensuring consistency across diverse streams of complex projects, and programs. Key Responsibilities: Lead discussions and development, design and architecture for strategic initiatives, including cloud, integration and enterprise solutions, engaging various Cotality business and technology teams as necessary.
Principal Component Engineer I CesiumAstroPrincipal Component Engineer IEl Segundo, CA$148,500–$199,000 / yearPlease Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. If you enjoy working in a startup environment and are passionate about developing leading-edge electronics for satellites, spacecraft, and aerospace systems, we would like to hear from you.
Principal Product Manager United Talent AgencyPrincipal Product ManagerBeverly Hills, California$200,000–$250,000 / yearBuild deep partnerships with cross‑functional leaders—including agents, executives, operations, and engineering—to surface needs, align on priorities, and champion a client‑ and creator‑centric product approach. Define and maintain epics, user stories, and acceptance criteria for complex initiatives, enabling effective agile execution and clear alignment across engineering and design teams.