Senior Software Engineer In Test Jobs in Kemmerer, WY

TerraPower is a nuclear technology company based in Bellevue, Washington. At its core, the company is working to raise living standards globally through a more affordable, secure, and environmentally friendly form of nuclear energy along with innovations in medical isotopes to improve human health. In 2006, TerraPower originated with Bill Gates and a group of like-minded visionaries who evaluated the fundamental challenges to raising living standards around the world. They recognized energy access was crucial to the health and economic well-being of communities and decided that the private sector needed to take action and create energy sources that would advance global energy deployment. TerraPower’s mission is to be a world leader in new nuclear technologies, while developing innovators and future leaders in the nuclear field. As a result, the company’s activities in the fields of nuclear energy and related sciences are yielding significant innovations in the safety and economics of nuclear power, hybrid energy and medical applications – all for significant human health benefits.

TerraPower is seeking to hire highly motivated and forward‑thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes. TerraPower is an Equal Opportunity Employer. We do not discriminate in hiring on the basis of sex, gender identity, sexual orientation, race, color, religious creed, national origin, physical or mental disability, protected Veteran status, or any other characteristic protected by federal, state, or local law.

The Instrumentation & Controls (I&C) Engineer is responsible for the integration, commissioning, and support of I&C systems for the Natrium Test & Fill Facility. This role will develop and maintain the control and monitoring systems used to test, condition, and transfer sodium and other media in support of the Natrium reactor program.

The I&C Engineer works closely with mechanical, systems, nuclear safety, and operations teams, as well as external suppliers, to ensure that facility I&C systems are safe, reliable, compliant with applicable codes and standards, and aligned with TerraPower’s overall Natrium design.

• Implement and maintain I&C system designs for the Test & Fill Facility, including architecture, hardware, software, and networking.
• Maintain design documentation: System Requirements Documents, System Design Descriptions, Interface Control Documents, control logic narratives, loop diagrams, and instrument datasheets.
• Ensure instruments, valves, transmitters, analyzers, and control system hardware to meet process, environmental, and safety requirements.
• Develop control strategies and logic for process control, interlocks, alarms, and safety‑related functions as applicable to the facility.
• Support development and maintenance of PFDs, P&IDs, control narratives, cause‑and‑effect diagrams, and I/O lists.

• Develop test procedures and support Factory Acceptance Tests (FATs), Site Acceptance Tests (SATs), and integrated system testing for I&C systems.
• Support installation, configuration, and troubleshooting of PLC/DCS hardware, I/O modules, field instruments, and related networking equipment.
• Participate in commissioning, startup, and performance testing of the Test & Fill Facility, including tuning and optimization of control loops.
• Provide technical support to resolve field issues during construction, checkout, and operations.

• Prepare technical specifications and statements of work for I&C‑related procurements and support vendor selection.
• Provide technical oversight of suppliers, including review and approval of vendor design documents, drawings, software, and test procedures.
• Coordinate I&C interfaces between the Test & Fill Facility and other Natrium systems and test facilities, ensuring configuration alignment.

• Ensure I&C designs comply with applicable codes, standards, and regulations (e.g., ISA/IEC, IEEE, NFPA), and TerraPower procedures.
• Support development of hazard analyses (e.g., HAZOP, FMEA) and incorporate resulting design requirements into I&C systems.
• Provide I&C input to licensing and safety analysis documentation as needed (e.g., descriptions of control and monitoring systems, instrumentation classifications).

• Provide ongoing engineering support to facility operations, maintenance, and test programs (e.g., troubleshooting, design changes, configuration control).
• Participate in development and review of operating procedures, alarm management strategies, and maintenance/ calibration plans for I&C equipment.
• Identify and implement improvements to enhance reliability, operability, maintainability, and cyber/physical security of I&C systems.
• Contribute to the development and continuous improvement of TerraPower I&C design processes, standards, and best practices.

• B.S. in Electrical Engineering, Controls Engineering, Instrumentation Engineering, or related discipline from an accredited university.
• Minimum 5 years of relevant experience in instrumentation and controls engineering for industrial or process facilities.
• Direct experience with design, configuration, and troubleshooting of industrial control systems (PLC, DCS, or safety PLC platforms).
• Experience generating I&C engineering deliverables such as I/O lists, loop diagrams, control logic diagrams, and instrument specifications.
• Working knowledge of PFDs and P&IDs and how they integrate with I&C design.
• Strong verbal and written communication skills and ability to work effectively in multi‑disciplinary teams.
• Ability to work in a fast‑paced, design‑and‑build project environment and to manage multiple priorities.

• Experience with I&C design for nuclear, power generation, chemical processing, or other high‑hazard/regulated facilities.
• Familiarity with nuclear or safety‑related standards (e.g., IEEE 603, IEEE 7‑4.3.2, IEEE 379, IEEE 497) and/or quality frameworks (e.g., ASME NQA‑1, 10 CFR 50 Appendix B or equivalent).
• Experience with high‑temperature systems (≥ 400°C), sodium or other liquid metal systems, or comparable challenging process environments.
• Experience with industrial communication protocols (e.g., Modbus, Profibus/Profinet, EtherNet/IP, OPC) and control system networking.
• Experience with alarm management, interlock design, and safety instrumented system (SIS) concepts (e.g., SIL, IEC 61511) in an industrial context.
• Proficiency with CAD tools (e.g., AutoCAD, AutoCAD Electrical, or similar) and requirements/configuration management tools.
• Prior experience supporting commissioning and operations of new facilities or large modifications.

• Role is primarily office‑based with frequent time spent in industrial/plant areas during installation, testing, and operations.
• Must be able to access and work in industrial environments, including use of PPE and adherence to site safety requirements.
• Occasional travel may be required to vendor facilities, other TerraPower locations, and partner sites.

This position is subject to qualification requirements in accordance with ANSI/ANS 3.1. Candidates must meet the minimum education and experience criteria applicable to the role, including relevant nuclear industry experience where required. Verification of data will be part of the hiring process.

Job Functions are physical actions and/or working conditions associated with the position. These functions may also constitute essential functions for the job which the employee must be able to fulfill, with or without accommodation. Information provided below is to help describe the job so that the applicant has a reasonable understanding of the job duties/expectations. An applicant’s ability to perform and/or tolerate these actions and conditions will be discussed and workplace accommodations may be made on a case‑by‑case basis following an individualized assessment of the applicant and other considerations, including but not limited to any governing safety standards.

• Motor Abilities: Sitting for extended periods, bending/stooping, grasping/gripping, fine motor control (hands)
• Physical exertion and/or requirements: Minimal, with ability to safely lift up to 25 pounds.
• Repetitive work: Prolonged
• Special Senses: Visual and audio focused work
• Work Conditions: Stairs, typing/keyboard, standard and/or sitting working environment of >8 hours/day
• Travel required 0‑10%

TerraPower’s technology is controlled for export by various agencies of the U.S. Government. TerraPower must evaluate applicants who are foreign nationals (other than asylees, refugees, or lawful permanent residents) in accordance with U.S. Government export control requirements. To facilitate TerraPower’s export control reviews, you will be asked as part of the application process to identify whether you are a U.S. Citizen or national, asylee, refugee, or lawful permanent resident of the United States. Government export authorization approval times vary. Based on the business needs for a particular position, TerraPower may not consider a foreign national from a country if it is impracticable to obtain timely Government export approval.

• Competitive Compensation
• Salary, eligible to participate in discretionary short‑term incentive payments
• Comprehensive Medical and Wellness Benefits
• Medical
• Vision
• Dental
• Life and Disability
• Gender Affiliation Benefits
• Parental Leave
• 401k Plan
• Generous Paid Time Off (PTO)
• 21 days of annually accrued PTO
• Generous Holiday Schedule
• 10 paid holidays
• Relocation Assistance
• Professional and Educational Support Opportunities

TerraPower Career and Benefits information: https://www.terrapower.com/contact-us/careers/