Nuclear Engineer - Radiological

Last Energy is a nuclear energy company that designs, builds, owns, and operates small modular reactors (SMRs) for industrial and commercial customers. The company's flagship product, the PWR-20, is a 20 MWe pressurized water reactor that is fully modular and factory-produced, enabling faster and more cost-effective deployment than traditional nuclear power plants. Last Energy serves as a behind-the-meter independent power producer, supplying reliable baseload electricity to energy-intensive industries including data centers, metals production, food and beverage, pulp and paper, chemicals, and cement manufacturing. The company's mission centers on making nuclear power radically simpler and more accessible by removing the burden of development, financing, and operations from customers through a power purchase agreement model. This approach aligns nuclear energy deployment with the urgent need for resilient, low-carbon power, particularly as demand from AI infrastructure and industrial growth accelerates. Last Energy's use of proven reactor technology combined with proprietary steel containment systems is designed to streamline licensing and reduce construction timelines. Last Energy represents a new generation of nuclear developers focused on decarbonizing hard-to-abate industrial sectors with firm, emissions-free power. By standardizing and modularizing the entire plant through factory manufacturing, the company aims to bring predictable costs and schedules to a sector historically challenged by both, positioning SMRs as a practical climate solution at commercial scale.

Key Duties & Responsibilities

Determine core and coolant radiological source terms

Determine neutron and gamma radiation fields

Calculate the dose due to theoretical accidents and the impact on surrounding areas

Participate in and support interfaces with customer and regulatory authorities to obtain regulatory approval of the Last Energy reactor core design, codes, and methods

Prepare and review safety analyses, calculation files, and associated records

Other duties as assigned

Qualifications

BS, MS, or PhD in Nuclear Engineering, or a related degree (e.g., physics with nuclear concentration)

5+ years of applicable experience in PWR or BWR radiological evaluations

Proficiency in MCNP, SCALE, RADTRAD, or other nuclear industry analysis code as well as scripting and coding with PYTHON or EXCEL VB

Positive and effective team interaction skills and value positive peer relationships

Effective written and oral communication skills