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Mechanical Engineer Firearms Design Jobs in Riverside, CA

Salas O'Brien

Mechanical Engineer

Tustin, CA · On-site

$70K - $110K/yr

Mechanical Engineer (Early Career) At Salas O'Brien we tell our clients that we're engineered for ... Our specialized experience includes design for data centers, healthcare, science and technology ...

HDR

Mechanical Engineer

Irvine, CA · On-site

As part of HDR's Building Engineering Services Group, you'll help design the critical ... We bring together mechanical, electrical, structural, and civil engineering experts to solve ...

Salas O'Brien, Inc.

Mechanical Engineer

Tustin, CA · On-site

$70 - $110/hr

Job Summary The entry level Mechanical Engineer will support the design and delivery of mechanical systems for healthcare and other complex facilities. This role focuses on technical execution ...

Kaizen Stackup

Thermal/Mechanical Engineer

Irvine, CA

$150K - $170K/yr

Position Summary The Thermal/Mechanical Engineer will design, model, and validate advanced thermal solutions for high-performance memory and storage hardware used by top-tier OEMs, ODMs, and ...

Kaizen Stackup

Thermal/Mechanical Engineer

Irvine, CA

$150K - $170K/yr

Position Summary The Thermal/Mechanical Engineer will design, model, and validate advanced thermal solutions for high-performance memory and storage hardware used by top-tier OEMs, ODMs, and ...

Theconstructsim

Mechanical Engineer

Irvine, CA · On-site

$80 - $90/hr

Job Summary The Mechanical Engineer will carry out engineering assignments concerned with the planning, design and testing of mechanical equipment, systems, and processes. Works cooperatively with ...

New

Actalent

Mechanical Engineer

Irvine, CA · On-site

Design and implement equipment modifications, mechanical improvements, and new tooling solutions ... Ensure all engineering activities align with GMP requirements, company quality systems, and ...

Salas O'Brien, Inc.

Mechanical Engineer

Corona, CA · Hybrid

$80K - $110K/yr

Provide engineering design, evaluation, and planning of mechanical systems for a variety of market types * Perform Load/Energy calculations with software such as Trace 700, IES and similar programs

Terran Orbital Corporation

Sr. Mechanical Engineer

Irvine, CA · On-site

$112K - $148K/yr

Conduct and lead small teams in the mechanical engineering design and development of spacecraft and spacecraft sub-systems including flight hardware, mechanisms, and ground support equipment. * Model ...

Salas O'Brien, Inc.

Mechanical Engineer

Irvine, CA · Hybrid

$80K - $110K/yr

Provide engineering design, evaluation, and planning of mechanical systems for a variety of market types * Perform Load/Energy calculations with software such as Trace 700, IES and similar programs

Salas O'Brien

Mechanical Engineer

Irvine, CA · On-site

$80K - $110K/yr

Provide engineering design, evaluation, and planning of mechanical systems for a variety of market types * Perform Load/Energy calculations with software such as Trace 700, IES and similar programs

Purple Hires Inc

Mechanical Engineer

Irvine, CA · On-site

Mechanical Engineer Location: Irvine CA (Onsite) Duration: C2C Seeking a Mechanical Engineer with 2 ... Design and analyze turbo machinery components * Perform thermal, structural, and performance ...

Terran Orbital Corporation

Sr. Mechanical Engineer

Irvine, CA · On-site

$112K - $148K/yr

Conduct and lead small teams in the mechanical engineering design and development of spacecraft and spacecraft sub-systems including flight hardware, mechanisms, and ground support equipment. * Model ...

Terran Orbital Corporation

Sr. Mechanical Engineer

Irvine, CA · On-site

$112K - $148K/yr

Conduct and lead small teams in the mechanical engineering design and development of spacecraft and spacecraft sub-systems including flight hardware, mechanisms, and ground support equipment. * Model ...

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Showing results 21-40

All JobsMechanical Engineer Firearms Design JobsMechanical Engineer Firearms Design Jobs in Riverside, CA

Mechanical Engineer Firearms Design information

See Riverside, CA salary details

$47.5K

$95.5K

$142.4K

How much do mechanical engineer firearms design jobs pay per year?

As of Sep 4, 2026, the average yearly pay for mechanical engineer firearms design in Riverside, CA is $95,540.00, according to ZipRecruiter salary data. Most workers in this role earn between $79,300.00 and $107,500.00 per year, depending on experience, location, and employer.

What is a mechanical engineer firearms design?

A Mechanical Engineer specializing in firearms design is responsible for developing, testing, and refining firearm components and systems. They use engineering principles, 3D modeling software, and prototyping methods to create reliable and innovative firearm designs. This role involves working with materials, manufacturing processes, and safety regulations to ensure the functionality and durability of the final product. Engineers in this field often collaborate with cross-functional teams, including ballistics experts and manufacturing specialists, to optimize performance.

What does a mechanical engineer firearms design do?

A typical day for a Mechanical Engineer in firearms design involves creating detailed design drawings, conducting simulations and analyses, and prototyping new firearm components or systems. You’ll collaborate closely with fellow engineers, manufacturing teams, and quality assurance staff to ensure that designs meet functional, safety, and regulatory requirements. Engineers also spend time troubleshooting mechanical performance issues and iterating on designs based on testing feedback. The work is a balance of independent technical tasks and teamwork, often involving project deadlines and continuous improvement initiatives.

What are the key skills and qualifications needed to thrive in the mechanical engineer firearms design position?

To thrive as a Mechanical Engineer Firearms Design, you need a strong background in mechanical engineering principles, materials science, and CAD modeling, usually supported by a bachelor’s degree in mechanical engineering or a related field. Proficiency with 3D CAD software (such as SolidWorks or AutoCAD), FEA tools, and knowledge of industry safety and regulatory standards (e.g., ATF compliance) are essential. Strong problem-solving abilities, attention to detail, and effective communication skills help engineers navigate complex design challenges and collaborate across multidisciplinary teams. These skills ensure the creation of safe, reliable, and innovative firearms products in a highly regulated industry.

What are popular job titles related to Mechanical Engineer Firearms Design jobs in Riverside, CA?

For Mechanical Engineer Firearms Design jobs in Riverside, CA, the most frequently searched job titles are:

What job categories do people searching Mechanical Engineer Firearms Design jobs in Riverside, CA look for?

The top searched job categories for Mechanical Engineer Firearms Design jobs in Riverside, CA are:

What cities near Riverside, CA are hiring for Mechanical Engineer Firearms Design jobs?

Cities near Riverside, CA with the most Mechanical Engineer Firearms Design job openings:

Mechanical Engineer Firearms Design jobs near you
Infographic showing various Mechanical Engineer Firearms Design job openings in Riverside, CA as of August 2026, with employment types broken down into 85% Full Time, 13% Part Time, and 2% Contract. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution, with an average salary of $95,540 per year, or $45.9 per hour.

Mechanical Engineer

Salas O'Brien

Tustin, CA • On-site

$70K - $110K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 23 days ago

Salas O'Brien rating

8.2

Company rating: 8.2 out of 10

Based on 13 frontline employees who took The Breakroom Quiz

162nd of 452 rated engineering

Job description

Mechanical Engineer (Early Career)
At Salas O'Brien we tell our clients that we're engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That's why we're committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future.
Building for the long-term means that all of our team members can expect to work on amazing projects with a people-first approach to problem solving. It also means that each member of our team has truly limitless potential to build a unique, meaningful, and high-impact career-and they'll receive great total rewards along the way.
About Us:
Founded in 1975, Salas O'Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We know that tomorrow's requirements are today's opportunities, and we are here to design lasting solutions for pressing challenges.
We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more.
Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day.
Job Summary:
The entry level Mechanical Engineer will support the design and delivery of mechanical systems for healthcare and other complex facilities. This role focuses on technical execution, coordination with multidisciplinary teams, and contributing to high-quality project outcomes. The successful candidate will apply engineering fundamentals, develop technical documentation, and support project delivery while continuing to build expertise in mechanical design for healthcare, institutional, and industrial projects.
Responsibilities:
  • Develop HVAC system designs of a given project based on scope of work and/or client RFPs .
  • Provide engineering design, evaluation, and planning of mechanical systems for healthcare, life sciences, higher education, and data center market types.
  • Conduct existing building surveys and documentation of existing HVAC systems.
  • Develop system design calculations and selection of equipment for use in buildings.
  • Prepare detailed design documents, reports, and studies.
  • General knowledge of project specifications and editing techniques.
  • General knowledge of California code requirements, including California Building Code (CBC) and HCAI-specific requirements.
  • Complete code compliance research.
  • Coordinate work with other disciplines.
  • Provide construction administration services.

Skills:
  • Proficiency in using engineering tools and software including Autodesk software (Revit, Navisworks).
  • Ability to perform HVAC load calculations utilizing Energy Soft and Trace energy modeling software.
  • Flexibility and willingness to work on various projects and tasks, embracing new challenges with enthusiasm.
  • Demonstrated ability to work independently and take initiative to drive projects forward.

Team Contribution & Development:
  • Collaborate with senior engineers and project managers to deliver projects on schedule and within scope.
  • Support proposal development and technical input for projects as needed.
  • Participate in knowledge sharing and continuous improvement of design standards and best practices.
  • Contribute to a positive team environment through effective communication and collaboration.
  • Continue to build technical expertise in specialized mechanical systems.

Qualifications:
  • Bachelor's degree in Mechanical Engineering.
  • 2-5 years experience in Mechanical Engineering.
  • Registration as EIT or PE preferred.

Location:
  • Tustin, CA (on-site with remote half day on Fridays)

Travel:
  • Up to 25%

Compensation & Benefits:
Salas O'Brien health and welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being. Your security. Your future. Team members have access to medical, dental, vision, and basic life insurance, a 401(k) plan, and the ability to purchase company stock at a discount. Salas O'Brien has both U.S. and Canadian (PTO) plans for full-time salaried, exempt and non-team members, 10 paid holidays, and paid leave programs for military service and new parents. And certain roles may be eligible for additional rewards, including merit increases, performance discretionary bonus, and stock.
The base salary range for this position is $70,000 to $110,000. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.
Equal Opportunity Employment Statement
Salas O'Brien provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state/provincial, or local laws. Salas O'Brien will accommodate the disability-related needs of applicants as required by law.
Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.

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