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61 Rtx Principal Mechanical Engineer Jobs Hiring Near You

The (ISD) Principal Mechanical Engineer leads and contributes to projects in areas such as design, design review, procurement, manufacture, installation, test, and initial operations of a project ...

Principal Mechanical Engineer As a Principal Mechanical Engineer you will play a key role in creating best‑in‑class experiences for our customers through innovative design, helping us push our ...

PRINCIPAL MECHANICAL ENGINEER - NUCLEAR Job Summary The Principal Nuclear Engineer- Mechanical in Engineering Services provides governance and oversight for multiple mechanical component activities ...

Principal Mechanical Engineer Location: Richland, WA Company: Columbia Energy & Environmental Services Salary: $120,000 - $180,000 DOE About Columbia Energy Columbia Energy & Environmental Services ...

Principal Mechanical Engineer Location: Richland, WA Company: Columbia Energy & Environmental Services Salary: $120,000 - $180,000 DOE About Columbia Energy Columbia Energy & Environmental Services ...

Proactive Collaboration About the Role Mainspring is seeking a Principal Mechanical Engineer to serve as a company-level technical authority in a critical mechanical engineering domain for our Linear ...

Principal Mechanical Engineer

Waltham, MA · On-site

$155K - $193K/yr

We are seeking a Principal Mechanical Engineer to set the architectural vision for high-performance Actuator Products on next-generation humanoid robotic platforms. This role sits at the intersection ...

Principal Mechanical Engineer Direct Hire Charlotte, NC The Charlotte office of our client offers a unique opportunity to join a high-growth team delivering critical infrastructure projects for major ...

Showing results 41-60

RTX Jobs Information

Do workers at Raytheon get paid breaks?

Yes. Most people get paid breaks.
77% of people say they get paid breaks.
Based on data from 73 people who took the Breakroom Quiz between December 2024 and July 2026.

Does Raytheon pay people when they’re sick?

Yes. Most people get paid when they’re sick.
84% of people say they would get paid if they were sick but scheduled to work.
Based on data from 37 people who took the Breakroom Quiz between August 2025 and July 2026.

At Raytheon, are sick days and vacation days separate paid time off?

Only some people have separate paid time off for sick days and vacation.
66% of people say they have to use vacation days when they’re out sick.
Based on data from 35 people who took the Breakroom Quiz between July 2025 and July 2026.

Is the health insurance from Raytheon affordable enough for their workers?

Most people say the health insurance costs are okay.
100% of people say the health insurance costs are okay
Based on data from 36 people who took the Breakroom Quiz between June 2025 and June 2026.

Do people get paid time off at Raytheon?

Most people get paid time off work.
97% of people say they get paid time off.
Based on data from 38 people who took the Breakroom Quiz between August 2025 and July 2026.

How far ahead of time do people find out their work schedule?

Most people find out their schedule less than four weeks ahead of time.
  • 58% of people with changing schedules find out their shifts one week or less ahead of time.
  • 17% of people with changing schedules find out their shifts two weeks ahead of time.
  • 8% of people with changing schedules find out their shifts three weeks ahead of time.
  • 17% of people with changing schedules find out their shifts four weeks or more ahead of time.

Based on data from 12 people who took the Breakroom Quiz between December 2024 and June 2026.

Do workers at Raytheon worry about hours?

Most people don’t worry about getting enough hours.
97% of people report they don’t worry about getting enough hours.
Based on data from 59 people who took the Breakroom Quiz between December 2024 and June 2026.

Do Raytheon workers get to choose the shifts they work?

Some people don’t get to choose which shifts they work.
46% report that they don’t have enough control over which shifts they work.
Based on data from 46 people who took the Breakroom Quiz between December 2024 and June 2026.

How easy is it for Raytheon workers to change shifts?

Some people find it hard to change shifts.
44% of people report that it’s hard to change shifts if they need to.
Based on data from 32 people who took the Breakroom Quiz between December 2024 and June 2026.

How easy is it to get time off at Raytheon?

Most people find it easy to get time off.
97% of people report it’s easy to get time off.
Based on data from 35 people who took the Breakroom Quiz between August 2025 and July 2026.

Do Raytheon managers change schedules at the last minute?

Most managers don’t change people’s schedules at the last minute.
98% of people say their manager doesn’t change their shift schedule at the last minute.
Based on data from 60 people who took the Breakroom Quiz between December 2024 and June 2026.

Do jobs at Raytheon spill into time workers aren’t paid for?

Rarely. The job doesn't usually spill into unpaid time.
9% of people report that their job takes up time that they don’t get paid for.
Based on data from 64 people who took the Breakroom Quiz between December 2024 and June 2026.

How easy is it to take sick days at Raytheon?

Most people find it easy to take sick days.
97% of people report that it’s easy to take time off if they are sick.
Based on data from 36 people who took the Breakroom Quiz between August 2025 and July 2026.

Is a Raytheon job good for students?

Most students say this is a good place to work if you’re studying.
100% of students report this is a good place to work if you’re studying.
Based on data from 10 people who took the Breakroom Quiz between January 2025 and July 2026.

Is working at Raytheon good if you’re a parent or caregiver?

Most parents and caregivers say this is a good place to work.
100% of people who care for a child or other relative report this is a good place to work.
Based on data from 34 people who took the Breakroom Quiz between December 2024 and April 2026.

Do people at Raytheon feel treated with respect by their managers?

Most people feel treated with respect by their managers.
76% of people say they’re treated with respect by their managers.
Based on data from 37 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people at Raytheon get to take their breaks without interruption?

Most people get breaks without interruption.
85% of people report that they get to take their breaks without interruption.
Based on data from 33 people who took the Breakroom Quiz between August 2025 and July 2026.

Is it stressful to work at Raytheon?

Some people feel stressed here.
54% of people say they often feel stressed at work.
Based on data from 35 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people at Raytheon enjoy their jobs?

Most people enjoy their job.
85% of people report they enjoy their job.
Based on data from 75 people who took the Breakroom Quiz between December 2024 and July 2026.

Do people at Raytheon recommend working with their team?

Only some people recommend working with their team.
45% of people report that they wouldn’t recommend working with their immediate team to a friend.
Based on data from 38 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people get enough training when they start at Raytheon?

Most people got enough training when they started.
73% of people report they got enough training when they started working here.
Based on data from 37 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people get support to advance at Raytheon?

Only some people are given support to advance their career here.
In the last year, 34% of people report not being given support to advance their career here.
Based on data from 35 people who took the Breakroom Quiz between August 2025 and July 2026.

Do people think Raytheon’s headquarters understands what’s happening where they work?

Most people think headquarters doesn’t understand what’s happening where they work.
81% of people think that this employer’s headquarters or owners don’t have a good understanding of what’s really happening where they work.
Based on data from 36 people who took the Breakroom Quiz between August 2025 and July 2026.

Do workers feel well informed about how Raytheon is doing?

Most people feel well informed about how the company is doing.
67% of people feel that they are kept well informed about how the company is doing as a whole.
Based on data from 33 people who took the Breakroom Quiz between August 2025 and July 2026.
Infographic showing various Principal Mechanical Engineer job openings at Rtx in the United States as of August 2026, with employment types broken down into 86% Full Time, and 14% Nights. Highlights an 94% Physical, 3% Hybrid, and 3% Remote job distribution.

Principal Mechanical Engineer

Fermilab

Batavia, NY

$124K - $164K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 8 days ago


Fermilab rating

9.1

Company rating: 9.1 out of 10

Based on 9 frontline employees who took The Breakroom Quiz

11th of 120 rated laboratories


Job description

The expected hiring range for this position is:

$124,800.00-$164,200.00.

Please note that the pay range information is a general guideline only. The pay offered to a selected candidate will be determined based on factors such the scope and responsibilities of the position, qualifications of the selected candidate, business considerations, internal equity, and external market pay for comparable jobs.

About the Role:
The Fermilab Infrastructure Services Division (ISD) is seeking a Principal Mechanical Engineer. This individual is responsible for major, complex, high-level engineering projects requiring engineering creativity in developing innovative concepts and techniques. The (ISD) Principal Mechanical Engineer leads and contributes to projects in areas such as design, design review, procurement, manufacture, installation, test, and initial operations of a project with extensive & diversified engineering requirements in compliance with all applicable local, state, and federal regulations, requirements and standards, and all Department of Energy (DOE) orders. This role may oversee sub-contractors or supervise/ manage an engineering group/department.

What your day-to-day as a Principal Mechanical Engineer at Fermilab will look like:

  • Analyze data and perform engineering calculations.
  • Develop specifications, designs, and documents for major and technically complex, high-level, and highly visible engineering projects and design solutions. Work involves a variety of complex and advanced engineering techniques.
  • Plan and/or lead large or complex projects from inception to completion and brings them to operating status. Estimates manpower, schedules work, coordinates and directs technicians.
  • Provide technical direction to draftsmen, designers, engineering associates, technicians, or less senior engineers. Coordinates and/or supervises technicians and other engineers and sub-contractors. May manage the activities of engineering groups or departments.
  • Identify problems or tasks requiring engineering solutions and provides a thorough analysis of alternatives.
  • Participate in procurement, as well as manufacture, installation, testing, and operation.
  • Assist or lead in the development of cost estimates, as well as the monitoring and/or management of budgetary obligations.
  • Review and approve work before hardware and financial resources are committed, ensuring conformance to specifications and cost/time constraints.
  • Enhance the national and international presence of projects or the Lab through participation in and collaboration on project reviews, as well as participation in technical conferences and publication.
  • Serve on safety panels, review committees, and other subcommittees as assigned. May serves as chair of subcommittee(s) or division/section committees.
  • Contribute to setting lab-wide engineering policies, safety standards or technical standards.
  • May provide supervision or leadership of a team including hiring, promotions, performance reviews, training, disciplinary actions, team exits, and other duties as assigned.
  • Perform other duties as assigned by supervisor.
  • Abide by and is responsible for performing all duties in accordance with all environmental, health and safety regulations and practices pertinent to this position.

Essential Skills and Competencies for Succes:

  • Bachelor's in an applicable Engineering discipline from an ABET accredited institution with 8+ years of engineering experience, or a Master's or PhD in an applicable Engineering discipline from an ABET accredited institution with 6+ years of engineering experience.

Applicable Knowledge, Skills and Abilities Required:

  • In-depth knowledge and proficiency in application of theories, concepts, principles, and methodology for the engineering discipline.
  • Possess extensive project planning skills in developing specifications and documents for major and technically complex, high-level, and highly visible engineering projects and engineering design solutions.
  • Ability to perform a variety of complex and advanced engineering techniques.
  • Experience with AutoCAD required, and/or Revit is a plus.
  • Professional Engineer licensure in the State of Illinois is desired.

The successful candidate will have experience in one or more of the following related areas:

  • Design of HVAC Systems
  • Design of piping Systems
  • Design of plumbing systems and code experience
  • HVAC "Controls/DDC" background desired
  • Experience with energy modeling/hvac softwares specially CDS-Trace desired
  • Exposure to Building Commissioning
  • Familiarity with Ashrae requirements and applications desired
  • Working knowledge of building codes related to mechanical systems

Work Arrangement:
Please note that the described work arrangement is subject to change based on business needs and is not guaranteed to be final.

  • Onsite: This is an onsite role, and the candidate must be able to work from our Batavia office.

Benefits/Perks:
Fermilab offers a competitive and comprehensive benefits program, including:

  • Medical, Dental, Vision and Flexible Spending Accounts
  • Paid time off
  • Life insurance
  • Short and Long-term disability insurance
  • Retirement benefits
  • Onsite day care

Why Fermilab:
Fermilab is America's premier laboratory for particle physics and accelerator research, funded by the U.S. Department of Energy. We support discovery science experiments in Illinois and locations around the world, including deep underground mines in South Dakota and Canada, mountaintops in Arizona and Chile, CERN in Europe and the South Pole.

Pre-Employment Screening:


Drug-Free Workplace & Pre-Employment Screening

Fermilab is dedicated to fostering a safe, productive and drug-free environment. An offer of employment is contingent upon the successful completion of a background check and drug screening.

HSPD-12

In accordance with Homeland Security Presidential Directive 12 (HSPD-12) new employees are required to obtain and maintain a HSPD-12 Personal Identity Verification (PIV) Credential. To obtain this credential, new employees must successfully complete and pass a federal background check investigation. This investigation includes a declaration of illegal drug activities, including use, supply, possession, or manufacture. This includes marijuana and cannabis derivatives, which are still considered illegal under federal law, regardless of state laws. Failure to obtain or maintain such government access authorization could result in the withdrawal of a job offer or future termination of employment.

Foreign Government Sponsored Activities

Fermilab employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. Such individuals will be asked to disclose any participation for review by Fermilab's Office of General Counsel.

REAL-ID Requirement for access to Fermilab Campus
Fermilab requires all members of the public to produce a REAL-ID, or equivalent, to access the Fermilab Campus for interviews or career events. A list of acceptable forms of ID can be found here: https://get-connected.fnal.gov/wp-content/uploads/2021/09/REALID-Documents.pdf. If a candidate is selected for an interview but does not possess any of the equivalent documents, we may schedule a virtual interview.

Equal Opportunity Statement

Fermilab is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, age, national origin, disability, veteran status, genetic information, and other legally protected categories.


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