Last Energy
Last Energy

Reactor Operator

TLDR

Support commissioning and safe operation of a PWR-5 test reactor, helping establish the operational foundation for a scalable global fleet alongside nuclear engineers and plant staff.

Last Energy is seeking an experienced Reactor Operator to support the commissioning, startup, and safe operation of our PWR-5 test reactor. This is a ground-floor opportunity to help establish the operational foundation for a fleet of reactors that will be deployed globally at scale. You will work hands-on with a multidisciplinary team of nuclear engineers, I&C specialists, and plant staff to execute reactor operations safely, reliably, and in compliance with all applicable regulatory requirements. Key Duties & Responsibilities
  • Monitor, operate, and control reactor systems during startup, operation, and shutdown in accordance with approved procedures and technical specifications
  • Execute fueling operations, including fuel handling, loading, core management activities, and associated radiological controls
  • Perform and document routine surveillances, plant walkdowns, and equipment checks to ensure systems remain within operational limits
  • Respond to abnormal and emergency plant conditions; execute abnormal operating procedures (AOPs) and emergency operating procedures (EOPs) as required
  • Support the development, review, and validation of plant operating procedures, especially as the PWR-5 design matures toward commercial deployment
  • Maintain rigorous configuration control and documentation standards consistent with nuclear quality assurance requirements
  • Participate in training, simulator exercises, and qualification programs; support the training of junior operators as applicable
  • Interface with regulatory authorities and support inspections, audits, and licensing activities as needed
  • Other duties as assigned
  • Qualifications
  • 2+ years of hands-on reactor operations experience, with demonstrated proficiency in licensed or certified operator duties
  • Experience with pressurized water reactor (PWR) or pool-type reactor operations; BWR experience will also be considered
  • Direct experience supporting fueling operations, including fuel handling and associated radiological and criticality safety controls
  • Strong working knowledge of reactor physics, thermal hydraulics, and plant systems as applied to day-to-day operations
  • Familiarity with nuclear QA programs, technical specifications, and the regulatory framework governing nuclear plant operations (NRC or equivalent)
  • NRC Reactor Operator (RO) or Senior Reactor Operator (SRO) license, or equivalent certification (e.g., DOE-facility certification, international equivalent) is preferred
  • Experience with small modular reactors (SMRs), research reactors, or naval reactors is preferred
  • Familiarity with startup and commissioning activities for new reactor facilities is preferred
  • Experience supporting regulatory inspections or participating in licensing submittals is preferred
  • Ability to work effectively in a lean, fast-paced startup environment with a "builder" mindset
  • Proven ability to execute procedures with a rigorous, questioning attitude and high attention to detail
  • Last Energy is revolutionizing the nuclear energy sector by developing micro modular nuclear power plants that are factory-made and designed for scalability. Our innovative approach focuses on delivering reliable, decarbonized, and affordable energy through a productized model that transforms traditional energy production.

    Founded
    Founded 2019
    Employees
    51-200 employees
    Industry
    utilities
    Funding stage
    Series C+
    Total raised
    $160M raised
    Last funding
    Raised December 2025
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