Principal Engineer, Advanced Power Engineering

Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world. A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary. Job Summary Flex intends to spin off its Cloud and Power Infrastructure segment into a new, independent publicly traded company, which we’re calling SpinCo, until the name is unveiled. The spin is planned for Q1 2027. If the intended spin occurs, this role will support SpinCo, which will focus on critical digital infrastructure, delivering end-to-end power and thermal management solutions for AI data centers and other mission-critical applications. To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Principal Engineer, Advanced Power Engineering located in Austin, TX. Reporting to the Chief Technology Officer, the Principal Engineer, Advanced Power Engineering will lead the research, development, and technical roadmap for next-generation data center power solutions that enable SpinCo’s integrated, productized data center strategy. This role is responsible for defining and advancing power architectures across medium-voltage and low-voltage systems, power distribution, energy storage, high-voltage and medium-voltage DC concepts, on-site generation integration, grid-interface technology, and power pods or skids. The role will partner closely with our power business units, manufacturing, supply chain, customers, and ecosystem partners to translate advanced power concepts into scalable, productized solutions. This is a hands-on technical leadership role. You will be in the details, generating architectures, models, specifications, and analysis yourself rather than only directing others to do so. We are looking for a leader who can run a full design-build cycle, set the technical bar by example, and is measured more by working hardware and validated designs than by decks and white papers. What a typical day looks like: Define and maintain the multi-generation power technology roadmap aligned to hyperscaler, leading silicon, grid-interface, and AI infrastructure requirements. Lead applied R&D, architecture development, and prototype execution for advanced power subsystems, including power pods and skids, MV e-houses, advanced conversion systems, energy storage integration, sidecar architectures, and next-generation high-voltage DC reference designs. Establish interface standards and integration requirements for power systems within SpinCo’s integrated data center platform. Serve as SpinCo’s technical authority for advanced power in customer engagements, strategic partnerships, industry forums, and standards discussions. Partner with Systems Architecture Engineering to ensure power systems are co-engineered with cooling, controls, IT infrastructure, and modular product designs. Support technical due diligence for acquisitions, partnerships, and supplier ecosystem decisions related to power and energy infrastructure. Mentor and develop a high-performing advanced power engineering bench across SpinCo, including close partnership with the cross-functional engineering teams responsible for specialized areas of the data center stack. The experience we’re looking to add to our team: Bachelor’s degree in Electrical Engineering, Power Electronics, Energy Systems, or related technical field; Master’s or PhD preferred or equivalent experience. 12+ years of engineering experience in power electronics, data center power, critical power infrastructure, utility-scale power, or power products manufacturing. Demonstrated leadership in electrical, mechanical, and/or systems architecture engineering disciplines 5+ years leading technical teams, advanced engineering teams, or architecture programs. Deep knowledge of AC/DC power architectures, MV/LV systems, power conversion, energy storage, grid interconnection, redundancy, reliability, and data center power delivery. Experience translating future technology concepts into executable product requirements, prototypes, and manufacturable platforms. Strong customer-facing technical leadership with hyperscale, colocation, AI infrastructure, or critical power customers. Hands-on power architecture and design experience, with a personal portfolio of schematics, models, and prototypes you drove to working hardware. #LI-EA1 EA42 SS26 AA01 CH12 MS14 CC11 EC37 PF38 JS21 NV60 FL75 What you'll receive for the great work you provide: Full range of medical, dental, and vision plans Life Insurance Short-term and Long-term Disability Matching 401(k) Contributions Vacation and Paid Sick Time Tuition Reimbursement Application Deadline: Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume. Job Posting Start Date 08-25-2026 Job Posting End Date Job Category Design, Process & Technology Engineering Is Sponsorship Available? No Flex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).