265 Reactor Design jobs in the United States

General Atomics (GA), and its affiliated companies, is one of the world's leading resources for high-technology systems development ranging from the nuclear fuel cycle to remotely piloted aircraft, airborne sensors, and advanced electric, electronic, wireless and laser technologies.
We currently have an exciting opportunity for a Manager in our Electromagnetic Systems (EMS) Group to lead programs related to nuclear reactor and related technology development. This position will report to the Vice President of Nuclear Technologies and Materials (NTM) Division. This incumbent will manage/coordinate current terrestrial and space nuclear reactor related programs and maintain NTM's state-of-the-art reactor technology and design capabilities and have a focus on interacting with DOE. This position will have overall responsibility for the technical and business performance of nuclear reactor design and technology programs; creating new program initiatives; maintaining highly qualified staff; ensuring that necessary resources are made available and building positive relationships with key customer organizations.
**DUTIES AND RESPONSIBILITIES:**
+ Responsible for creating and implementing a technical/business plan to expand EMS role in terrestrial nuclear systems and technologies including R&D and design leading ultimately to manufacturing and deployment.
+ Work with subordinate project managers and lead engineers to manage current nuclear reactor programs with a high level of both technical and business achievement.
+ Work with subordinates to acquire and maintain a highly qualified staff.
+ Work with NTM/EMS management to assure necessary resources and facilities for programs.
+ Inspire creation of new nuclear technologies and concepts and apply for IR&D funding to perform sufficient work to secure IP.
+ Oversee preparation of winning proposals in response to new program opportunities.
+ Build working relationships with key personnel within customer and potential customer organizations. Coordinate with EMS Strategic Development in this endeavor.
+ Work with counterparts in NTM and other EMS organizations to ensure efficient use of staff, resources and facilities.
+ Specify application of appropriate EMS engineering procedures, quality assurance policy and other requirements for space nuclear projects.
+ Work with space nuclear project managers to prepare budgets, schedules and deliverables and to track progress.
+ Work with subordinates to anticipate and resolve technical and programmatic problems.
+ Establish and enforce procedures to ensure a safe working environment.
+ Report status/progress on space nuclear programs to upper NTM and EMS management.
+ Perform other duties as assigned or required.
We recognize and appreciate the value and contributions of individuals with diverse backgrounds and experiences and welcome all qualified individuals to apply.
49883
**Job Qualifications:**
+ Requires a minimum of a Master's degree Nuclear Engineering plus thirteen or more years of nuclear engineering experience. May substitute equivalent experience in lieu of education.
+ In-depth knowledge of nuclear reactor design, fuels, safety, licensing, and analysis methods.
+ Broad knowledge of multidisciplinary engineering fields including mechanical, thermal-fluid, control, electrical and systems analysis.
+ At least seven years of experience in managing nuclear reactor design and development programs.
+ Effective communication, documentation, presentation, and interpersonal skills, and ability to direct technical teams.
+ Able to work extended hours as required.
+ Ability to obtain and maintain a DOE or DoD Security Clearance is desirable.
**Salary:** $140,900 - $257,233 **Travel Percentage Required** 0 - 25 **Relocation Assistance Provided** Provided **US Citizenship Required?** Yes **Clearance Required?** Desired **Clearance Level** Management **Workstyle** Onsite
General Atomics is committed to hiring and retaining a diverse workforce. We are an Equal Opportunity/Affirmative Action Employer and will consider all qualified applicants for employment without regard to race, color, religion, religious creed, ancestry, gender, pregnancy, sex, sexual orientation, transitioning status, gender identity, gender expression, national origin, age, genetic information, military and veteran status, marital status, medical condition, mental disability, physical disability, or any other basis protected by local, state, or federal law. EEO is the law. We also prohibit compensation discrimination under all applicable laws. To learn more visit Notices.pdf. U.S. Citizenship is required for certain positions.

Our client is seeking a highly experienced Senior Nuclear Reactor Engineer to join their dynamic team in Huntsville, Alabama, US . This is a critical role responsible for the design, analysis, and operation of nuclear reactor systems. The ideal candidate will possess a deep understanding of nuclear physics, reactor kinetics, thermal hydraulics, and materials science. You will be instrumental in ensuring the safety, efficiency, and reliability of our reactor operations through meticulous planning and execution of engineering tasks. Responsibilities include performing complex simulations, developing and validating analytical models, conducting root cause analyses for operational anomalies, and contributing to the improvement of existing reactor designs. You will also be involved in the preparation of technical documentation, safety reports, and regulatory submissions. This position requires close collaboration with cross-functional teams, including physicists, technicians, and management, to achieve project milestones and maintain the highest standards of operational excellence. A strong commitment to nuclear safety protocols and regulatory compliance is paramount. The role involves a hybrid work model, offering a balance between collaborative in-office work and focused remote tasks. We are looking for a proactive individual with excellent problem-solving skills and the ability to mentor junior engineers. A minimum of 8 years of experience in nuclear engineering or a closely related field is required, with a Bachelor's or Master's degree in Nuclear Engineering or a relevant STEM discipline. Familiarity with advanced reactor technologies and probabilistic risk assessment is highly desirable. The ability to obtain and maintain a security clearance may be required.

About Sandia:
Sandia National Laboratories is the nation's premier science and engineering lab for national security and technology innovation, with teams of specialists focused on cutting-edge work in a broad array of areas. Some of the main reasons we love our jobs:
+ Challenging work with amazing impact that contributes to security, peace, and freedom worldwide
+ Extraordinary co-workers
+ Some of the best tools, equipment, and research facilities in the world
+ Career advancement and enrichment opportunities
+ Flexible work arrangements for many positions include 9/80 (work 80 hours every two weeks, with every other Friday off) and 4/10 (work 4 ten-hour days each week) compressed workweeks, part-time work, and telecommuting (a mix of onsite work and working from home)
+ Generous vacation, strong medical and other benefits, competitive 401k, learning opportunities, relocation assistance and amenities aimed at creating a solid work/life balance*
World-changing technologies. Life-changing careers. Learn more about Sandia at: benefits vary by job classification.
What Your Job Will Be Like:
Join a dynamic team that helps tackle some of the most complicated issues facing our nation's security!
Sandia National Laboratories offers ambitious work, flexible schedules, and amenities sought to create a solid work/life balance!
You could be the highly motivated individual who joins our diverse Nuclear Facilities Operations team, supporting both the Annular Core Research Reactor and the Critical Experiments Reactor.
On any given day, you may be called on to:
+ Perform Reactor Engineer/Operator duties, which includes operating a reactor as a certified Reactor Operator.
+ Help prepare and handle experiment packages which may involve crane operations.
+ Maintain and repair reactor systems and associated support equipment which may involve forklift operations.
+ Support experiment plan development and execution at nuclear facilities, radiological facilities, and reactors.
+ Ensure that facility operations align with the framework of a strong nuclear safety culture and implement effective operational decision-making.
+ Prepare and present technical reports and presentations for professional organizations and user groups.
Due to the nature of the work, the selected applicant will be required to work onsite.
Salary Range:
$114,000 - $227,500
*Salary range is estimated, and actual salary will be determined after consideration of the selected candidate's experience and qualifications, and application of any approved geographic salary differential.
Qualifications We Require:
+ Bachelor's degree in relevant science, technology or engineering field and 5 years relevant experience, OR equivalent combination of education plus relevant experience,
OR completion of Navy Nuclear Power School plus 9 years relevant experience.
+ Experience at a nuclear reactor facility in operations/maintenance.
+ Within one year from date of hire, you will certify as a Reactor Operator at the Annular Core Research Reactor (ACRR) in accordance with Facility Operations Staff Training and Certification Requirements.
+ Able to acquire and maintain a DOE Q security clearance.
Qualifications We Desire:
+ Masters' Degree in STEM
+ Current or previous qualifications as a Reactor Operator
+ Knowledge of SNL reactor facilities
+ Experience maintaining and repairing Reactor Instrumentation and Control Systems
+ Familiarity with DOE nuclear facility requirements
+ Ability to complete complex assignments with minimal management guidance
+ Demonstrated leadership, initiative, and organizational skills to balance multiple tasks and deadlines
+ Excellent interpersonal, written and communication skills Current DOE Q security clearance
About Our Team:
Nuclear Facilities Operations provides operational management of nuclear reactor facilities. These facilities include the Annular Core Research Reactor Facility and the Sandia Pulsed Reactor Facility & Critical Experiment. These nuclear facilities are used in experiments for a wide variety of programmatic customers. Detailed facility descriptions are captured in the documented safety analysis for each nuclear facility. This is part of the Radiation, Electrical and High Energy Density (REHEDS) Research Foundation at Sandia.
Posting Duration:
This posting will be open for application submissions for a minimum of seven (7) calendar days, including the 'posting date'. Sandia reserves the right to extend the posting date at any time.
Security Clearance:
Sandia is required by DOE to conduct a pre-employment drug test and background review that includes checks of personal references, credit, law enforcement records, and employment/education verifications. Applicants for employment need to be able to obtain and maintain a DOE Q-level security clearance, which requires U.S. citizenship. If you hold more than one citizenship (i.e., of the U.S. and another country), your ability to obtain a security clearance may be impacted.
Applicants offered employment with Sandia are subject to a federal background investigation to meet the requirements for access to classified information or matter if the duties of the position require a DOE security clearance. Substance abuse or illegal drug use, falsification of information, criminal activity, serious misconduct or other indicators of untrustworthiness can cause a clearance to be denied or terminated by DOE, resulting in the inability to perform the duties assigned and subsequent termination of employment.
EEO:
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or veteran status and any other protected class under state or federal law.
NNSA Requirements for MedPEDs:
If you have a Medical Portable Electronic Device (MedPED), such as a pacemaker, defibrillator, drug-releasing pump, hearing aids, or diagnostic equipment and other equipment for measuring, monitoring, and recording body functions such as heartbeat and brain waves, if employed by Sandia National Laboratories you may be required to comply with NNSA security requirements for MedPEDs.
If you have a MedPED and you are selected for an on-site interview at Sandia National Laboratories, there may be additional steps necessary to ensure compliance with NNSA security requirements prior to the interview date.
Essential Functions:
If offered the position, you may be required to demonstrate your fitness to perform certain physical aspects of the position, including lifting, carrying, pushing, and pulling.
Job ID:
Job Family: EN
Regular/Temporary Position: R
Full/Part-Time Status: F

**WHO WE ARE**
As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute.
Our culture and employee experience make it clear: We are powered by passion and purpose. Together, we're creating healthier communities and a cleaner planet, and our people are the driving force behind our success. At Constellation, you can build a fulfilling career with opportunities to learn, grow and make an impact. By doing our best work and meeting new challenges, we can accomplish great things and help fight climate change. Join us to lead the clean energy future.
**TOTAL REWARDS**
Constellation offers a wide range of benefits and rewards to help our employees thrive professionally and personally. We provide competitive compensation and benefits that support both employees and their families, helping them prepare for the future. In addition to highly competitive salaries, we offer a bonus program, 401(k) with company match, employee stock purchase program; comprehensive medical, dental and vision benefits, including a robust wellness program; paid time off for vacation, holidays, and sick days; and much more.
***This Engineering role can be filled at the Entry, Mid-level or Senior Engineer level. Please see minimum qualifications list below for each level***
Expected salary range:
+ Entry-Level - $85k
+ Mid-Level - $4,500 - 117,000
+ Sr Level - 121,500 - 155,000
Ranges are per year based on experience, along with a comprehensive benefits package that includes bonus and 401K.
**PRIMARY PURPOSE OF POSITION**
Responsible for performing engineering and technical tasks, under direct supervision, in support of nuclear plant operations.
**PRIMARY DUTIES AND ACCOUNTABILITIES**
+ Assure all engineering analysis & recommendations prepared are in accordance with applicable safety analyses, industry codes, and all regulatory requirements.
+ Perform reactor engineering and technical tasks as assigned by supervision.
+ Support reactor engineering work functions.
+ Must obtain Qualified Nuclear Engineering (QNE) within 24 months of assuming the position.
+ All other job assignments and/or duties pursuant to company policy or as directed by management to include but not limited to: (Emergency Response duties and/or coverage, Department duty coverage and/or call out, and positions outside of department in support of outage activities etc.)
**MINIMUM QUALIFICATIONS for Entry Level E01 Engineer - New Graduate**
+ Bachelor's degree in Engineering (Chemical, Civil/Structural, Electrical, Industrial, Mechanical or Nuclear)
+ Maintain minimum access requirements or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties
+ The requirements as outlined above meet or exceed ANSI/ANSI-3.1-1014 (4.6.1) Standard, "Selection, Qualifications, and Training of Personnel for Nuclear Power Plants"
**MINIMUM QUALIFICATIONS for Mid-level E02 Engineer**
+ Bachelor's degree in engineering (chemical, civil/structural, electrical, industrial, mechanical or nuclear) with 2 years of nuclear or related engineering experience
+ Maintain minimum access requirements or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties
+ The requirements as outlined above meet or exceed ANSI/ANSI-3.1-1014 (4.6.1) Standard, "Selection, Qualifications, and Training of Personnel for Nuclear Power Plants"
**MINIMUM QUALIFICATIONS for Senior E03 Engineer**
+ Bachelor's degree in Engineering (Chemical, Civil/Structural, Electrical, Industrial, Mechanical or Nuclear) with 5 years of nuclear experience or related engineering experience
+ Maintain minimum access requirement or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties
+ The requirements as outlined above meet or exceed ANSI/ANSI-3.1-1014 (4.6.1) Standard, "Selection, Qualifications, and Training of Personnel for Nuclear Power Plants"
**PREFERRED QUALIFICATIONS**
+ Engineering in Training certification
Constellation is proud to be an equal opportunity employer and employees or applicants will receive consideration for employment without regard to: age, color, disability, gender, national origin, race, religion, sexual orientation, gender identity, protected veteran status, or any other classification protected by federal, state, or local law.

Job Title: Chemical Engineering Technician
Job Description
We are seeking an experienced Engineering Technician to join our dynamic team. In this role, you will follow established Standard Operating Procedures (SOPs) and protocols to safely and accurately conduct chemical tests and material treatments. You will prepare chemical solutions and execute electrochemical processing steps, including plating, etching, and other wet chemistry techniques. This position requires an individual who can maintain a clean and organized work area, comply with health, safety, and environmental standards, and manage chemical inventories.
Responsibilities
+ Follow established SOPs, protocols, and work instructions to carry out chemical tests and material treatments safely and accurately.
+ Prepare chemical solutions and perform surface preparation using solvents, acids, bases, and other reagents.
+ Execute electrochemical processing steps such as plating, etching, and other wet chemistry techniques.
+ Collect experimental data, prepare reports, and communicate results to team members.
+ Maintain organization and cleanliness in the work area while ensuring compliance with health, safety, and environmental standards.
+ Safely handle, store, and dispose of hazardous chemicals and waste streams in accordance with company regulatory requirements.
+ Track and maintain inventory of chemicals and consumables.
+ Train and mentor team members in safe chemical handling, equipment operation, and production procedures.
+ Contribute to continuous improvement initiatives targeting process control, safety, efficiency, and production quality.
Essential Skills
+ Proven experience in a production environment with a strong foundation in chemistry principles and chemical safety.
+ Skilled in wet chemical processing, surface preparation, plating, etching, and material analysis.
+ Proficiency with standard measuring instruments used in chemical processes and metrology tools.
+ Ability to execute chemical processes from written SOPs and work instructions with accuracy and consistency.
+ Strong organizational skills with precise data recording and reporting abilities.
+ Familiarity with data analysis and reporting tools such as Excel, Google Sheets, and JMP.
+ Effective communication and collaboration skills in cross-functional teams.
+ Strong problem-solving abilities and a troubleshooting mindset.
+ Knowledge of hazardous chemical handling, storage, disposal, and environmental compliance requirements.
Additional Skills & Qualifications
+ 3+ years of experience preferred.
+ Critical thinking and problem-solving skills.
Work Environment
This position is based onsite in Emeryville, and candidates should reside within 45 minutes of the location. The company operates as a startup with sites in Berkeley and Santa Clara, offering a vibrant and innovative work environment.
Pay and Benefits
The pay range for this position is $35.00 - $50.00/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
- Medical, dental & vision - Critical Illness, Accident, and Hospital - 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available - Life Insurance (Voluntary Life & AD&D for the employee and dependents) - Short and long-term disability - Health Spending Account (HSA) - Transportation benefits - Employee Assistance Program - Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a fully onsite position in Berkeley,CA.
Application Deadline
This position is anticipated to close on Oct 21, 2025.
About Actalent
Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 30,000 consultants and more than 4,500 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500.
The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing due to a disability, please email (% ) for other accommodation options.

**About Us**
Heidelberg Materials is one of the world's largest suppliers of building materials. Heidelberg Materials North America operates over 450 locations across the U.S. and Canada with approximately 9,000 employees.
**What You'll Be Doing**
+ Assist in the design and implementation of engineering projects.
+ Conduct site inspections and collect data for analysis.
+ Collaborate with senior engineers on process improvements.
+ Prepare technical reports and documentation.
+ Support the maintenance and troubleshooting of plant equipment.
**What Are We Looking For**
+ Strong analytical and problem-solving skills.
+ Proficiency in engineering software and tools.
+ Excellent communication and teamwork abilities.
+ Ability to work independently and manage multiple tasks.
+ Commitment to safety and quality standards.
**Work Environment**
+ Fast-paced, dynamic work environment.
+ Exposure to both office and industrial plant settings.
+ Opportunities for hands-on learning and professional growth.
**What We Offer**
+ Competitive hourly pay
+ Housing Assistance
+ Periodic travel and meetings with other region interns
Equal Opportunity Employer - Minority / Female / Veteran / Disabled
#Intern
**Req ID** JR

**Have you ever thought about being part of a company that reimagines chemistry every day to build a better world?**
That's the purpose of Indorama Ventures, and we want you with us on this journey!
We are looking for innovative, collaborative professionals who are ready to embrace the challenge of working in a company that is constantly expanding internationally.
We value flexibility, partnership, and believe that the impact of our actions goes far beyond the chemical industry.
Here, diversity matters.
Our work environment is inclusive, diverse, and guided by respect, ethics, and equal opportunities for all.
**What we're looking for:**
**General Purpose of Job**
Our summer intern program is tailored to individuals who are currently enrolled full-time students at an accredited four-year college or university. The internships run from May to August - dependent on the school calendar. The goal of the Indorama Intern Program is to provide a structured program that will equip interns with the skills and experience to help prepare for a successful career.
Under close supervision, intern will be responsible for providing technical support to assigned area(s). After initial orientation, intern will be assigned to Production Engineering or Process Engineering in continuous production units, batch process or utilities.
**Essential Job Functions and Responsibilities**
+ At the end of the internship, the intern is required to give a project assignments presentation to the Site Leadership Team.
+ Support engineers in performance of assignments, both project and day-to-day workings of engineering
+ Provide status updates to mentor/engineer on project assignments
+ Under management supervision, ensure that activities are carried out to comply with the integrated management system, as applicable (safety, food safety, GMP, health, environmental, quality and responsible care requirements).
+ Essential functions require presence in the workplace on a regular basis and an ability to work extra hours if needed. If applicable, ability to work overtime may be needed to ensure required staffing capacity to meet daily production objectives.
+ Work collaboratively with team members with different backgrounds and perspectives.
+ Assists other employees in accomplishments of Indorama company goals. Follows instructions and performs other duties as may be assigned by supervisor.
+ Participates in Environmental, Health, & Safety initiatives as set forth by the company. Participates in and completes company required training programs.
**Education / Experience / Skills Requirements**
+ Must be a full-time college student at the Junior or Senior level by the end of Spring 2026, currently enrolled at an accredited university seeking a Bachelor of Science degree in Chemical Engineering
+ 3.0 GPA or higher required
**Specific certifications, licenses, or registrations:**
+ Must be authorized to work in U.S. and not require work authorization sponsorship for this position or in the future.
+ Must possess or be able to obtain a Transportation Worker Identification Credential (TWIC) Card. Please visit ** for information on TWIC.
**Specific Skills and Knowledge**
+ Must have a level of proficiency with Internet, Email and Microsoft Office programs
+ Knowledge of the basic principles and methods used in chemical plant manufacturing and analyses
+ Must have excellent written and verbal communication skills
+ Strong planning and organizational skills
+ Able to research and analyze information of considerable difficulty and draw valid conclusions
+ Able to solve complex problems and identify the appropriate resources
+ Able to build relationships across all organizational lines.
+ Able to develop and maintain awareness of occupational hazards and safety precautions
+ Must be willing to commit to the summer program for the entire 10-week program.
**What do we offer?**
A competitive compensation package, including:
- Health insurance
- WellHub / TotalPass
- Life insurance
- And other exclusive benefits
The division you'll be joining is a global leader in the chemical industry. We offer a broad portfolio of solutions and high delivery standards to markets such as Crop Solutions, Home and Personal Care, Coatings, Energy & Resources, and Performance Products.
**Here, you can make a difference.** **Join us!**
We're Indovinya, a top producer of chemical intermediates and surfactants. Our extensive portfolio is designed to meet our customers' most diverse needs. As producers of solutions used for crops, oil and gas, coatings, home and personal care, and other applications, we are present in the daily lives of millions worldwide. Through our increasingly sustainable chemistry, designed to meet the needs of each of our customers carefully, we want to transform our operations and products into something increasingly relevant for the planet.
We are part of Indorama Ventures Public Company Limited, one of the world's leading petrochemical producers, and are present globally with manufacturing in Europe, Africa, Americas, and Asia-Pacific.
With 18 plants, seven R&D centers, and an experienced management team, we have a strong track record of environmental stewardship. Our expertise lies in innovative, eco-friendly chemistry. Today, Indovinya emerges as a more robust and strategic company dedicated to driving new business opportunities while prioritizing the well-being of countless individuals as employees, customers, suppliers and mainly the communities close to our operations worldwide.

**About Us**
Heidelberg Materials is one of the world's largest suppliers of building materials. Heidelberg Materials North America operates over 450 locations across the U.S. and Canada with approximately 9,000 employees.
**What You'll Be Doing**
+ Put your education into action in the field to support and participate in assigned project work.
+ Support the plant operations in achieving production goals while partnering with experienced engineers, managers, and production employees in different departments.
+ Complete technical projects to gain an understanding of the operations of a quarry or aggregate site.
+ Learn the mission of the production, maintenance, and quality departments and different job and functions.
+ Ensures compliance with all health, safety, and environmental regulations, as well as company policies and procedures
**What Are We Looking For**
+ Current juniors and seniors working toward a degree in Chemical or Industrial Engineering
+ Commitment and engagement through a high level of work ethic and utilization of abilities for the best of the company
+ Demonstrated openness to change, flexibility, and adaptability
+ Excellent communication skills, both written and verbal
+ Ability to motivate teams and simultaneously manage several projects
+ Strong strategic thinking, problem-solving, and decision making skills
**Work Environment**
+ Collaborative and inclusive team culture.
+ Opportunities for professional growth and development.
+ Exposure to various aspects of the building materials industry.
#Intern
**Req ID** JR