Principal Power Electronics Engineer Long WallPrincipal Power Electronics EngineerLong Beach, California$168,900–$256,900 / yearYou will have the opportunity to be a key member of a small team of mechanical, fluid, and electrical engineers working to develop innovative deployable launch solutions that enable the rapid deployment of Long Wall launch and test systems. 5+ years of electronic product experience designing hardware from concept through production; strong emphasis on full life cycle development of new hardware products and not small incremental updates to legacy hardware.
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.
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 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 Power Electronics Engineer I CesiumAstroPrincipal Power Electronics Engineer IEl Segundo, CA$148,500–$199,000 / yearIn this position, you will contribute across the entire development lifecycle of next-generation power electronics hardware for satellites and space power systems payloads-from leading the definition of power system architectures and trade studies to detailed circuit design, simulation, printed circuit board (PCB) layout, verification and integration testing, production transition, and manufacturing support. Experience working with electrical power systems and subsystems, including developing power architecture and power requirements, performing trade studies for size, weight, power, and cost optimization (SWAP-C), selecting power converter topologies, and defining power management and control blocks.
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.
Principal Product Manager (Bulk Property Data) CoreLogicPrincipal Product Manager (Bulk Property Data)Irvine, CA7-10+ years proven experience in high-tech business management, product management or marketing which includes some combination of forecasting and budgeting, product and/or business strategy determination, market research, pricing analysis and/or product development. This role is responsible for managing products and services through the development cycle as well as working with and influencing sales, marketing, finance, analytics, operations, implementation and product development, and senior management to achieve revenue and profit goals.
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, Capital Markets and Strategy Harbinger MotorsPrincipal, Capital Markets and StrategyGarden Grove, California$140,000–$150,000 / yearHarbinger 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.
Principal Communication Systems Engineer I CesiumAstroPrincipal Communication Systems 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. In this position, you will help develop space architecture concepts, sub-system design, payload design, requirements development, analysis and decomposition, high-level software and hardware system architecture design, concept of operations (CONOPS) development, and risk assessment.
Principal Mechanical Engineer Salient MotionPrincipal Mechanical EngineerTorrance, California$200,000–$230,000 / yearRequirements Architecture: Translate high-level, ambiguous mission needs into actionable functional and operational requirements for complex electromechanical systems, including spacecraft structures, docking and release mechanisms, robotic arm systems, and military-grade ground support hardware. Cross-Functional Leadership: Act as a technical anchor across the organization, guiding integration efforts, supporting multidisciplinary teams through complex system testing, and authoring test plans, procedures, proposals, and associated program documentation.
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.
Title: Principal AI Engineer – Agentic AI | Contract to Hire | Irvine, CA (Hybrid) | AS Central Business SolutionsTitle: Principal AI Engineer – Agentic AI | Contract to Hire | Irvine, CA (Hybrid) | ASIrvine, CaliforniaThe ideal candidate will have strong experience building LLM-powered applications, AI agents, RAG solutions, tool-calling workflows, and data-grounded AI systems, with a strong focus on accuracy, trust, scalability, and production readiness. We are seeking a Senior/Principal AI Engineer to design and build production-grade Agentic AI and Generative AI applications that enable Client's executives to interact with operational data through a conversational interface.
Principal Data Engineer (Python, AWS, Redshift, EMR, Airflow, Databricks, Big data) | Contract to Hire | Irvine, CA (Hybrid) | Central Business SolutionsPrincipal Data Engineer (Python, AWS, Redshift, EMR, Airflow, Databricks, Big data) | Contract to Hire | Irvine, CA (Hybrid) |Irvine, CaliforniaLead the creation of data environments and/or data sets to serve a wide range of data users, including but not limited to Data Scientists, Data Analysts, Business Analysts etc. Expertise with programming languages - Python (required), Scala, Ruby, R Database technologies - SQL, performance tuning concepts, AWS RDS, RedShift, MySQL.
Principal Build Reliability Engineer Castelion CorporationPrincipal Build Reliability EngineerTorrance, CaliforniaHands-on development of design for manufacturability through ensuring identification of key characteristics, prototype testing for manufacturability, First Article and Detailed Inspection planning, evaluation of previous non-conformances and lessons learned, and other manufacturing and quality tools as required. Participating in Preliminary Design Review (PDR) / Critical Design Review (CDR) to ensure design for quality (DFQ), design for manufacturability (DFM), risk quantification and mitigation, and that appropriate test validation methods and inspection techniques, including nondestructive evaluation methods, have been considered.
Principal GNC Engineer OutpostPrincipal GNC EngineerLos Angeles, CAGetting mass from orbit to a precise point on the ground is a GNC problem end to end: a deorbit burn that has to hit an entry corridor, a hypersonic entry that has to bleed energy inside structural and thermal limits, and a guided descent that has to land on a target, repeatably, and cheaply enough to do it often. Implement control of aerodynamically unstable or marginally stable vehicles, gain scheduling and robust control across wide Mach and dynamic pressure ranges, actuator and effector allocation, autonomous mode sequencing and abort logic.