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Junior Nuclear Engineer Jobs in Arizona (NOW HIRING)

Sargent & Lundy

Manager 2 - Power Uprates

Phoenix, AZ · Hybrid

$145K - $222K/yr

Lead and mentor junior engineering staff on power plant engineering technical tasks. * Perform ... Experience with nuclear power uprates and/or turbine retrofit projects. * Experience and practical ...

Sargent & Lundy

Manager 2 - Power Uprates

Phoenix, AZ · Hybrid

$145K - $222K/yr

Lead and mentor junior engineering staff on power plant engineering technical tasks. * Perform ... Experience with nuclear power uprates and/or turbine retrofit projects. * Experience and practical ...

Sargent & Lundy

Manager 2 - Power Uprates

Phoenix, AZ · On-site

$145K - $222K/yr

Lead and mentor junior engineering staff on power plant engineering technical tasks. * Perform ... Experience with nuclear power uprates and/or turbine retrofit projects. * Experience and practical ...

Bechtel

Cost Engineer

Chandler, AZ · On-site

Nuclear, Security & Environmental; Energy; Mining & Metals, and the Manufacturing and Technology ... Must be able to independently provide guidance, training and coaching to junior Cost Engineers with ...

Bechtel

Cost Engineer

Chandler, AZ

Nuclear, Security & Environmental; Energy; Mining & Metals, and the Manufacturing and Technology ... Must be able to independently provide guidance, training and coaching to junior Cost Engineers with ...

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All JobsNuclear Engineer JobsJunior Nuclear Engineer JobsJunior Nuclear Engineer Jobs in Arizona

Junior Nuclear Engineer information

See Arizona salary details

$31.2K

$66.9K

$102K

How much do junior nuclear engineer jobs pay per year?

As of Sep 5, 2026, the average yearly pay for junior nuclear engineer in Arizona is $66,909.00, according to ZipRecruiter salary data. Most workers in this role earn between $45,200.00 and $74,600.00 per year, depending on experience, location, and employer.

What does a junior nuclear engineer do?

A Junior Nuclear Engineer assists senior engineers in designing, operating, and maintaining nuclear systems such as reactors, power plants, or medical equipment. Their responsibilities often include conducting research, performing safety analyses, preparing technical reports, and helping ensure compliance with regulations. They may also participate in troubleshooting and resolving technical issues, as well as supporting upgrades and efficiency improvements. Junior Nuclear Engineers typically work under supervision while gaining experience and developing their expertise in the field.

What are the key skills and qualifications needed to thrive as a junior nuclear engineer?

To thrive as a Junior Nuclear Engineer, you need a solid background in nuclear engineering principles, mathematics, and physics, typically backed by a bachelor's degree in nuclear engineering or a related discipline. Familiarity with industry-standard simulation software, radiation safety protocols, and relevant certifications like Engineer-in-Training (EIT) is valuable. Strong analytical thinking, attention to detail, and effective communication set standout candidates apart in this role. These skills and qualifications are essential for ensuring safety, regulatory compliance, and successful collaboration in the highly technical and regulated nuclear industry.

What kinds of projects and tasks can a junior nuclear engineer expect to work on during their first year?

As a Junior Nuclear Engineer, you can expect to be involved in a variety of projects such as assisting with reactor design modifications, supporting safety analysis, and participating in routine inspections or maintenance planning. You'll work closely with senior engineers and multidisciplinary teams to learn industry protocols, regulatory requirements, and best practices. Your daily responsibilities may include data collection, drafting technical reports, running simulations, and contributing to troubleshooting sessions. This hands-on exposure provides a strong foundation for career advancement and deeper expertise in the nuclear field.

What is the difference between Junior Nuclear Engineer vs Nuclear Technician?

AspectJunior Nuclear EngineerNuclear Technician
Required CredentialsBachelor's degree in nuclear engineering or related field; some roles may require licensing or certificationsAssociate degree or technical certification in nuclear technology or related field
Work EnvironmentDesign, analysis, and development tasks in research facilities, power plants, or laboratoriesOperational tasks, equipment maintenance, and safety procedures in nuclear power plants or labs
Employer & Industry UsageUsed by engineering firms, power plants, and research institutionsCommonly employed in nuclear power plants, maintenance facilities, and testing sites

Junior Nuclear Engineers focus on designing and analyzing nuclear systems, requiring a bachelor's degree and some certifications. Nuclear Technicians handle operational and maintenance tasks, often with technical diplomas. While both work in nuclear environments, their roles differ in responsibilities and qualifications.

What are the most commonly searched types of Nuclear Engineer jobs in Arizona?

The most popular types of Nuclear Engineer jobs in Arizona are:

What are popular job titles related to Junior Nuclear Engineer jobs in Arizona?

For Junior Nuclear Engineer jobs in Arizona, the most frequently searched job titles are:

What job categories do people searching Junior Nuclear Engineer jobs in Arizona look for?

The top searched job categories for Junior Nuclear Engineer jobs in Arizona are:

What cities in Arizona are hiring for Junior Nuclear Engineer jobs?

Cities in Arizona with the most Junior Nuclear Engineer job openings:

Junior Nuclear Engineer jobs near you
Infographic showing various Junior Nuclear Engineer job openings in Arizona as of August 2026, with employment types broken down into 90% Full Time, 7% Part Time, and 3% Contract. Highlights an 86% Physical, 5% Hybrid, and 9% Remote job distribution, with an average salary of $66,909 per year, or $32.2 per hour.

Mechanical Engineer

Allied Staff Augmentation Partners

Tonopah, AZ • On-site

$55 - $95/hr

Full-time

Posted 22 days ago

Key responsibilities

  • Support engineering, design, plant modifications, and capital improvement projects at a nuclear power plant.

  • Perform engineering evaluations, calculations, and technical analyses for mechanical systems.

  • Support troubleshooting, field activities, and implementation of plant modifications and equipment upgrades.

Job description

Job Title: Mechanical Engineer

Job Type: Contract / Full-Time
Industry: Nuclear Power / Energy
Experience Levels: Engineer I, Engineer II, Engineer III & Senior Mechanical Engineer
Per Diem: Available for qualified candidates residing more than 100 miles from the work location

Position Overview:
We are seeking Mechanical Engineers at multiple experience levels to support engineering, design, plant modifications, and capital improvement projects at a commercial nuclear power plant.

This is an excellent opportunity for engineers ranging from early-career professionals to experienced Senior Engineers who want to support critical mechanical systems within the nuclear power industry.

Mechanical Engineers will work closely with Engineering, Operations, Maintenance, Project Management, Design, and external engineering organizations to develop technical solutions, execute plant modifications, improve equipment reliability, and support the safe and reliable operation of the facility.

Engineers will have the opportunity to support projects throughout the full engineering lifecycle, including conceptual design, engineering evaluations, calculations, design changes, procurement, installation, testing, startup, and project closeout.

Key Responsibilities:
  • Perform engineering evaluations, calculations, and technical analyses for mechanical systems.
  • Develop, review, and implement engineering change packages and plant modifications.
  • Prepare engineering calculations, technical specifications, design documents, and supporting analyses.
  • Perform plant walkdowns to verify field conditions and support engineering and design activities.
  • Support troubleshooting of mechanical equipment and system performance issues.
  • Review vendor documentation, drawings, engineering calculations, and procurement specifications.
  • Coordinate with Engineering, Operations, Maintenance, Project Management, vendors, and engineering firms.
  • Support design reviews, acceptance reviews, and field implementation activities.
  • Provide engineering support during outages, maintenance activities, testing, installation, and startup.
  • Support root cause evaluations, corrective actions, and equipment reliability programs.
  • Assist with capital projects, equipment upgrades, plant modernization, and long-term reliability initiatives.
  • Ensure engineering activities comply with applicable NRC requirements, ASME/ANSI standards, plant procedures, and nuclear industry codes.
  • Monitor engineering deliverables, project schedules, and project execution.
  • Provide technical leadership and mentoring to junior engineers as appropriate for Engineer III and Senior-level positions.
Experience Levels:
Engineer I
  • Bachelor's Degree in Mechanical Engineering.
  • Strong understanding of mechanical engineering fundamentals and design principles.
  • Ability to perform calculations and technical evaluations under direction.
  • Strong communication, organizational, and problem-solving skills.
Engineer II:
  • Bachelor's Degree in Mechanical Engineering.
  • 2+ years of engineering experience.
  • Experience supporting engineering design, plant modifications, power generation, or industrial facilities preferred.
  • Ability to independently complete engineering assignments with limited supervision.

Engineer III:
  • Bachelor's Degree in Mechanical Engineering.
  • 5+ years of engineering experience.
  • Experience supporting and/or leading moderately complex engineering projects and plant modifications.
  • Ability to provide technical direction and mentor junior engineers.

Senior Mechanical Engineer:
  • Bachelor's Degree in Mechanical Engineering.
  • 8+ years of engineering experience or an equivalent combination of education and relevant experience where applicable.
  • Demonstrated experience leading complex engineering projects and multidisciplinary teams.
  • Strong technical leadership, project execution, and mentoring capabilities.

Preferred Qualifications:
  • Previous commercial nuclear power plant experience.
  • Standard Design Process (SDP) qualification/experience strongly preferred.
  • Experience developing or supporting engineering change packages and plant modification programs.
  • Knowledge of NRC regulations, ASME, ANSI, and applicable nuclear industry codes and standards.
  • Experience with capital projects, equipment upgrades, engineering design, and plant modernization.
  • Experience performing engineering calculations, design verification, system design, and equipment qualification.
  • Plant walkdown and field engineering experience.
  • Experience supporting nuclear outages and field implementation activities.
  • Strong troubleshooting, root cause analysis, and corrective action experience.
  • Professional Engineer (PE) license preferred but not required.
  • Excellent written and verbal communication skills.
  • Ability to work effectively within multidisciplinary engineering and project teams.
\
Highly Desired Mechanical Systems Experience:
Experience with one or more of the following is highly desirable:
  • Pumps and valves.
  • Piping systems.
  • Heat exchangers.
  • HVAC and ventilation systems.
  • Reactor support systems.
  • Turbine and balance-of-plant equipment.
  • Mechanical equipment reliability.
  • Plant upgrades and modifications.
  • Capital engineering projects.
  • Outage support.
  • Engineering implementation and startup.

Candidates with strong mechanical engineering experience in commercial nuclear power, power generation, utilities, or other highly regulated industrial environments are encouraged to apply.