If you have what it takes to become part of the Vistra family and would like to start a promising career with a global leader, take a look at the exciting employment opportunities that are currently available and apply online. Job Summary Responsible for leading the mechanical engineering scope of the Power Uprate projects. Ensures high-quality design, modification, and testing of mechanical systems while maintaining compliance with NRC requirements, industry codes, and Vistra standards. Coordinates with EPC partners, OEMs, and site engineering to deliver reliable, constructible, and safe mechanical solutions that integrate seamlessly into plant infrastructure. Job Description Key Accountabilities Lead mechanical engineering scope for multi-billion-dollar EPU projects, ensuring safety, quality, and schedule adherence. Direct and review mechanical system designs, ensuring compliance with ASME, NRC, and fleet standards. Coordinate with EPC contractors, OEMs, and site engineering to ensure system compatibility and constructability. Support Owner's Engineer and independent third-party reviews, validating design quality and operational readiness. Provide technical leadership in resolving mechanical design issues to maintain outage and project milestones. Ensure mechanical modifications support long-term operability, maintainability, and integration into plant systems. Education, Experience, & Skill Requirements Bachelor's degree in Engineering (required); Mechanical preferred 10+ years of nuclear engineering experience, with 5+ years in mechanical systems design, modification, or major projects. Direct experience with Extended Power Uprates, large-scale plant modifications, or equivalent projects. Strong knowledge of NRC, INPO, ASME, and ANSI codes and standards. Demonstrated ability to lead discipline-specific teams and interface with EPCs, OEMs, and site staff. Experience supporting regulatory submittals and responding to

NRC/INPO

questions preferred. Key Metrics On-time delivery of mechanical engineering milestones. Compliance with NRC, INPO, and ASME standards. Minimal corrective actions from reviews or audits. Strong coordination with EPCs, OEMs, and site engineering. Mechanical systems integrated successfully into plant operations with proven reliability. Successful completion of independent reviews with minimal corrective actions. • Effective coordination between Project Leadership site engineering, Owner's Engineer, and third parties. Job Family Plant Operations Company Vistra Nuclear Operations Company Locations Oak Harbor, Ohio Ohio We are a company of people committed to: Exceeding Customer Expectations, Great People, Teamwork, Competitive Spirit and Effective Communication. If this describes you, then apply today! If you currently work for Vistra or its subsidiaries, please apply via the internal career site. It is the policy of the Company to comply with all employment laws and to afford equal employment opportunity to individuals in all aspects of employment, including in selection for job opportunities, without regard to race, color, religion, sex, sexual orientation, gender identity, pregnancy, national origin, age, disability, genetic information, military service, protected veteran status, or any other consideration protected by federal, state or local laws. If you are an individual with a disability and need assistance submitting an application or would like to request an accommodation, please email us at assistance@vistraenergy.com to make a request.