Principal Software Engineer

Join Mattel, Inc. as a Principal Solution Architect specializing in Product Lifecycle Management (PLM). In this pivotal role, you will leverage your expertise to design and implement innovative solutions that enhance our product development processes. Collaborate with cross-functional teams to drive strategic initiatives and ensure the seamless integration o…

Role overview Mattel, Inc. is hiring a Principal Enterprise Architect specializing in Integrations and API Architecture. This position is located in El Segundo and centers on connecting platforms and products across the company. What you will do Design and deliver integration solutions that link Mattel’s systems and offerings. Collaborate with teams throughout the organization to maintain reliable data flow and connectivity. Use expertise in API management and enterprise architecture to enhance scalability and system performance. Impact This architect role directly influences how Mattel’s systems communicate, supporting business objectives and unlocking new product features.

Role Overview Mattel, Inc. is looking for a Principal Digital Architect with a focus on E-commerce and Enterprise AI. This position is based in El Segundo. The architect will guide the design and rollout of digital systems that support e-commerce operations and integrate artificial intelligence throughout the company. What You Will Do Lead the development of digital architecture for e-commerce platforms and enterprise AI solutions. Work closely with cross-functional teams to set technology roadmaps that align with business goals and customer expectations. Shape innovative approaches to improve customer experience and streamline operations. Encourage the architecture team to follow best practices and track industry trends. Collaboration and Leadership This role partners with technology and business stakeholders across Mattel. Leadership will involve mentoring team members and ensuring architectural decisions support both immediate needs and long-term strategy.

Join Vardaspace as a Principal of Accounting and Finance, where you will play a pivotal role in shaping the financial future of our organization. As a key leader, you will oversee financial strategies, ensure compliance with regulations, and drive financial performance.

About VardaUnlocking the potential of Low Earth Orbit. Varda is at the forefront of developing commercial space infrastructure, from pharmaceutical processing in orbit to cost-effective reentry capsules.Our innovations are paving the way for products that can only be manufactured in space, ranging from lifesaving medications to advanced fiber optics. By creating essential products and infrastructure, Varda aims to bridge the gap between the orbital economy and life on Earth, expanding humanity’s economic horizons.Our talented team is made up of industry veterans from SpaceX, Blue Origin, leading pharmaceutical firms, and Silicon Valley. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda has garnered support from top-tier investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Based in El Segundo, California, Varda operates out of advanced offices and production facilities where we design, integrate, and test our vehicles and technologies. We also maintain offices in Washington, DC, and Huntsville, AL.Join Varda and contribute to building a thriving in-space ecosystem.At Varda, we believe that manufacturing in zero-gravity is essential for unlocking new materials. We are actively developing spacecraft and technologies to make this vision a reality and expand human manufacturing capabilities.

Varda Space Industries builds commercial space infrastructure, including in-orbit pharmaceutical manufacturing and reentry capsules designed for cost efficiency. The company specializes in products enabled by microgravity, such as advanced fiber optics and pharmaceuticals, aiming to bring the benefits of space manufacturing to people on Earth. Founded in 2021 by Will Bruey and Delian Asparouhov, Varda’s team draws on backgrounds from SpaceX, Blue Origin, major pharmaceutical firms, and Silicon Valley. The company is supported by Khosla Ventures, Lux Capital, and Founders Fund. Headquarters and production are based in El Segundo, California, with offices in Washington, DC, and Huntsville, Alabama. Role overview The Lead Principal Mechanisms Engineer for Payloads leads the design and development of complex electromechanical flight hardware. This hardware must operate reliably in orbit, withstand hypersonic reentry, and return to Earth for further analysis and development. This position shapes the payload architecture for missions focused on pharmaceutical manufacturing and hypersonic reentry testbeds. The engineer guides projects from initial concept through detailed design, ensuring mission requirements are met throughout each stage.

Join Sonsoft Inc. as a Senior Architect specializing in Broadcast Technologies. In this pivotal role, you will leverage your extensive experience in designing and implementing advanced broadcast systems. Collaborate with a talented team to drive innovation and ensure the delivery of high-quality broadcast solutions that meet the evolving needs of our clients.

About CX2 CX2 develops defense technology focused on spectrum superiority for the United States and allied nations. The team builds AI-driven hardware and software to detect, disrupt, and protect the electromagnetic spectrum across land, air, sea, and space. Role Overview The Electronic Warfare Architect will shape the next generation of electronic warfare solutions at CX2. This role combines technical expertise in EW, experience with modeling and simulation, and the ability to advocate for technology to key stakeholders. The Architect will help communicate CX2’s vision to the Pentagon and the broader electronic warfare community. What You Will Do Define product offerings within the Pentagon’s warfighting and procurement framework Work closely with force capability planners, wargaming and simulation experts, and requirements working groups Influence strategic thinking at the Pentagon, contributing to future roadmaps and budget planning Support the creation of new Electronic Warfare Programs of Record that highlight CX2’s capabilities Location El Segundo, CA

Join Saviynt as a Principal Software Engineer focused on Application Access Governance!At Saviynt, we are on a mission to empower organizations through our cutting-edge identity authority platform, designed to enhance security while enabling seamless digital transformation. Our Enterprise Identity Cloud provides unmatched visibility and control, ensuring your organization can confidently navigate the complexities of cyber risk while providing users with the access they need to thrive.Key Responsibilities:- Engage in thorough requirements analysis to inform software development.- Architect and implement secure, scalable, multi-tenant software solutions compatible with major cloud platforms, including AWS and Azure.- Collaborate with cross-functional teams to create innovative software designs and architecture.- Develop state-of-the-art enterprise identity cloud solutions and ensure robust testing and deployment of applications and systems.- Revise, update, refactor, and debug existing code to enhance performance and security.- Take charge of initiating projects from the ground up while managing and optimizing existing services.- Document processes throughout the software development lifecycle and provide expert-level technical support.- Adhere to agile methodologies and principles to drive project success.

Who We ArePicogrid is a pioneering venture-backed defense technology firm dedicated to bridging the long-standing gap between cutting-edge technology and the urgent needs of national security. We are currently developing vital infrastructure to integrate sensors, autonomy, and operators, with our technology actively utilized in operations worldwide. Our mission is to provide a decisive operational advantage to safeguard the United States and its allies.About the RolePicogrid is looking for a Director of Government Solutions who is committed to shaping the future of space operations and enhancing national security. In this pivotal role within Picogrid’s leadership team, you will collaborate closely with our founders to formulate strategies for engaging U.S. Space Force stakeholders, driving business expansion, and facilitating the successful implementation of our technology in essential space and multi-domain operations. Your contributions will have a significant impact on the evolution of U.S. and allied space operations.ResponsibilitiesLead initiatives to secure contracts, cooperative agreements, and funding opportunities with the U.S. Space Force, Space Operations Command (SpOC), Space Systems Command (SSC), and related organizations by preparing proposals, presentations, and strategic plans.Develop and implement a comprehensive government solutions strategy that aligns with Picogrid’s mission and objectives, specifically designed for the space domain and supporting joint operations.Establish and nurture strong relationships with key stakeholders across the U.S. Space Force, the broader Department of Defense, and federal contractors engaged in the space and aerospace sectors.Collaborate closely with Capture Managers and Deployment Strategists to identify, shape, qualify, capture, and win high-value strategic opportunities within the space and multi-domain C2 ecosystem.Provide leadership and mentorship to a growing team of professionals dedicated to government business development and solution delivery.Monitor and evaluate policy, acquisition, and technology trends impacting the national security space enterprise to inform business strategy.Represent Picogrid at space industry conferences, defense forums, and government-industry partnership events to enhance our visibility and reputation within the Space Force and space security communities.

BryceTech is seeking an experienced Contracts Principal to provide strategic advisory and assistance services (A&AS) in support of a significant defense program, with a focus on Department of Defense (DoD) acquisition life cycle planning and Space Force systems. In this pivotal role, you will engage in contract negotiation, administration, compliance, and the execution of acquisition strategies to further SSC’s mission of developing and maintaining cutting-edge space systems.The ideal candidate will possess a robust background in DoD acquisition regulations (FAR/DFARS), comprehensive contract lifecycle management, and hands-on experience within U.S. Space Force programs.The Space Systems Command (SSC) encompasses critical areas such as Space Domain Awareness (SDA) systems and Defensive and Offensive Space Control (DSC/OSC) capabilities. SSC/SZ-BC is entrusted with developing, integrating, testing, deploying, sustaining, and supporting systems that address both strategic and tactical operational requirements in complex environments, including ground, near-space, and space.Key responsibilities include:Facilitate source selection processes in accordance with FAR 9.505-4.Coordinate and manage functional meeting requests.Create source selection documentation.Review and draft proposal evaluations.Support the management of contracts and subcontracts.Advise on contracting actions, including requests for proposals and technical evaluations.Provide insights and determinations regarding contracts.Offer guidance on contractual rights and obligations, risk mitigation strategies, and problem-solving approaches.Assist in managing Indefinite Delivery Indefinite Quantity (IDIQ) contracts and developing future acquisition strategies.

Role overview Radiant Industries is hiring a Principal Turbomachinery Engineer to act as the Responsible Engineer for advanced turbomachinery within a nuclear-driven power generation system. The focus is on the mechanical design, reliability, and performance of the main rotating assembly in a 1MW closed-loop Brayton cycle. This position requires deep technical ownership of complex, high-speed rotating equipment. What you will do Lead the mechanical architecture for high-speed rotating equipment that operates under extreme temperatures, pressures, and rotational speeds. Guide technical work in rotor dynamics, structural integrity, bearings, seals, and system integration. Collaborate with electrical, thermal, and manufacturing teams to ensure integration across disciplines. Maintain end-to-end responsibility from concept through production, emphasizing technical rigor and sound engineering judgment. Requirements Extensive experience designing and analyzing turbomachinery, with a focus on high-speed rotating hardware. Strong knowledge of rotor dynamics, structural assessment, bearing and seal selection, and system-level integration. Hands-on approach with a track record of delivering production-ready hardware. Ability to work effectively with specialists in electrical, thermal, and manufacturing engineering. Location This position is based in El Segundo, CA.

About Radiant IndustriesRadiant Industries, headquartered in El Segundo, California, is at the forefront of innovation in the energy sector, pioneering the development of the world's first mass-produced portable nuclear microreactors. Our flagship reactor, Kaleidos, is a groundbreaking 1-megawatt, fail-safe microreactor designed for mobility and can operate for up to five years without needing refueling. This revolutionary portable nuclear power solution offers rapid deployment capabilities, making it a viable alternative to conventional diesel generators, with applications in supporting critical infrastructure such as hospitals, data centers, remote locations, and military installations. Founded in 2020, we are committed to leveraging modern software engineering techniques to deliver safe, factory-built microreactors, utilizing well-established materials. With an ambitious roadmap, we aim to test our first reactor at the Idaho National Laboratory next year and commence initial customer deliveries in 2028.Join Our Team as a Principal FPGA EngineerWe are seeking a passionate and skilled Principal FPGA Engineer to become an integral part of our Embedded Systems team. In this role, you will design, develop, and validate FPGAs for the reactor's instrumentation and control systems, focusing on safety-critical applications, sensor and actuator management, and communication systems. You will collaborate closely with hardware engineers, embedded software engineers, and test engineers in a cross-functional environment to create cohesive designs that effectively monitor and control fission reactors. As a key contributor, you will play a vital role in testing the first commercial reactor design in over half a century.This position is full-time and based onsite in El Segundo, CA.

About VardaLow Earth orbit is open for business. Varda is pioneering the advancement of commercial space infrastructure, from in-orbit pharmaceutical manufacturing to innovative and cost-effective reentry capsules.Our mission is to harness the potential of space to create products that enhance life on Earth, including essential pharmaceuticals and advanced fiber optics. We aim to drive innovation in the orbital economy by establishing the necessary infrastructure and products.Our team combines expertise from veterans of SpaceX, Blue Origin, leading pharmaceutical firms, and Silicon Valley innovators. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda has secured significant investment from renowned backers such as Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Headquartered in El Segundo, California, Varda operates a production facility where we design, integrate, and test our vehicles, equipment, and materials. We also have offices in Washington, DC, and Huntsville, AL.Join us at Varda and contribute to building a vibrant in-space ecosystem.

Radiant Industries designs portable nuclear microreactors in El Segundo, CA. The company's flagship product, Kaleidos, is a 1-megawatt microreactor intended for easy transport and long-term power delivery, up to five years without refueling. Kaleidos aims to serve hospitals, data centers, remote operations, and military sites as a cleaner alternative to diesel generators. Radiant was founded in 2020 and plans to test its first reactor at Idaho National Laboratory this summer, with initial customer shipments scheduled for 2028. Role overview This Lead Principal Electrical Engineer role centers on PCB design for terrestrial reactor control systems, with future potential for space-based applications. The position requires a technical leader to define electrical architecture, set design standards, and guide the complete development cycle for high-reliability, low-noise printed circuit boards. Work includes requirements gathering, schematic capture, layout, validation, and deployment. What you will do Lead electrical architecture for reactor control systems Establish and maintain design standards for PCB development Drive architectural decisions for mixed-signal, high-speed, and power distribution designs Oversee the full development process of printed circuit boards, from requirements through deployment Prioritize signal integrity and low-noise performance for data acquisition and real-time processing Mentor and support other electrical engineers on the team Contribute to the technical direction of Radiant’s hardware platform Key focus areas Full-stack PCB development Mixed-signal circuit design High-speed interface design Power distribution and management Signal integrity for critical control systems

About VardaLow Earth orbit is open for business. Varda is at the forefront of revolutionizing commercial space infrastructure, pioneering innovations from in-orbit pharmaceutical production to cost-effective reentry capsules.From life-saving medications to advanced fiber optics, numerous products utilized on Earth can only be effectively manufactured in space. Varda is driving innovation within the orbital economy, developing both the products and infrastructure necessary for space to provide tangible benefits to life on Earth. Our mission is to extend the economic frontiers of humanity.Our team is uniquely equipped to achieve this vision, with leadership and staff drawn from industry giants like SpaceX, Blue Origin, and top pharmaceutical firms, as well as Silicon Valley innovators. Founded in January 2021 by Will Bruey and Delian Asparouhov, we enjoy significant support from esteemed investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Varda's headquarters is located in El Segundo, California, where we maintain offices and a production facility for our vehicles, equipment, and materials. We also have offices in Washington, DC, and Huntsville, AL.Join Varda and contribute to the creation of a dynamic in-space ecosystem.

About Radiant IndustriesRadiant Industries, based in El Segundo, California, is a pioneering startup dedicated to revolutionizing the energy sector with the world's first mass-produced, portable nuclear microreactors. Our flagship reactor, Kaleidos, is a groundbreaking 1-megawatt microreactor designed for mobility and operational efficiency, capable of running for up to five years without the need for refueling. This innovative portable nuclear power solution is set to replace conventional diesel generators, providing essential energy support for hospitals, data centers, remote locations, and military installations. With a unique focus on modern software engineering, Radiant is committed to delivering safe, factory-built microreactors using proven materials. Founded in 2020, we are on a path to test our first reactor at the Idaho National Laboratory next year, with customer deliveries commencing in 2028.About the RoleWe are looking for a skilled Senior Electrical Engineer to lead the design and implementation of electrical control and measurement systems for our microreactor projects. The successful candidate will take ownership of designs from requirements capture to operational deployment. You will be involved in a variety of tasks ranging from circuit board design to integration with fault-tolerant, commercially available hardware. This role will require close collaboration with cross-disciplinary teams focused on the nuclear reactor core, fluid heat transfer systems, and structural components.Key Responsibilities:Collaborate with multidisciplinary teams to design, implement, and test electrical control systems for microreactors.Create and develop industrial-grade electrical control hardware, including schematics, wiring diagrams, harnessing, and integration assemblies.Lead the design of fault-tolerant and safety-critical electrical systems, prioritizing reliability, maintainability, and compliance with regulations.Develop and review electrical interface designs connecting control systems, power equipment, and instrumentation.Ensure compliance of designs with relevant electrical codes and safety standards, including NFPA and NEC.Conduct SCCR and Arc Flash calculations.Qualifications:Bachelor’s degree in Electrical Engineering or a related field.A minimum of 5 years of experience in designing electrical hardware.Proven expertise in electrical control systems and safety-critical applications.Strong understanding of industry standards and codes related to electrical design.Excellent problem-solving skills and a collaborative mindset.

CX2 is an innovative defense technology firm dedicated to providing spectrum superiority for the United States and its allies. Our advanced AI-driven hardware and software solutions excel in detecting, disrupting, and defending the electromagnetic spectrum across various domains including land, air, sea, and space.We are currently in search of a highly proficient Electrical Engineer to conceptualize, develop, and enhance cutting-edge electronic systems aimed at next-generation drone defense (counter-UAS) strategies. This position requires engagement with pioneering technologies such as RF systems, embedded electronics, sensors, and power systems to effectively detect, track, and neutralize unmanned aerial threats.

We are seeking a talented TIBCO Consultant to join our team at SonSoft Inc. In this role, you will leverage your expertise in TIBCO technologies to deliver innovative solutions that drive our clients' success. You will work closely with cross-functional teams to design, implement, and optimize integration solutions that meet the unique needs of our clients.