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Junior Mechanical Engineering Jobs in Riverside, CA

WSP

Senior Mechanical Engineer - Buildings

Riverside, CA · On-site

$100K - $147K/yr

Mentor junior staff and contribute to team development Who You Are Required Qualifications * Bachelor's Degree in Mechanical Engineering or Architectural Engineering * 5+ years of relevant experience ...

WSP

Senior Mechanical Engineer - Buildings

Irvine, CA · On-site

$107K - $156K/yr

Mentor junior staff and contribute to team development Who You Are Required Qualifications * Bachelor's Degree in Mechanical Engineering or Architectural Engineering * 5+ years of relevant experience ...

Arcadis

Senior Process Mechanical Design Engineer

Irvine, CA · On-site

$96K - $133K/yr

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy ... junior engineers and ensuring rigorous quality control reviews. This is an opportunity to make a ...

Pro-Dex Inc

Staff Mechanical Design Engineer

Irvine, CA · On-site

$135K - $145K/yr

As a senior member of the engineering team, this individual serves as a technical leader and mentor ... junior engineers and influencing cross-functional teams in the identification, analysis, and ...

Pro-Dex, Inc.

Staff Mechanical Design Engineer

Irvine, CA · On-site

$135K - $145K/yr

As a senior member of the engineering team, this individual serves as a technical leader and mentor ... junior engineers and influencing cross-functional teams in the identification, analysis, and ...

Belcan Corporation

Mechanical Engineer II

Irvine, CA · On-site

$55.12 - $89.41/hr

Mechanical Engineer II Pay Rate: $40.01 - $64.9/hr. Location: Irvine, CA Area Code: 949, 714 ZIP ... May give directions and/or guidance to junior level engineers, designers and drafters. * Works with ...

Fluxergy

Senior Mechanical Engineer

Irvine, CA · On-site

$112K - $148K/yr

At the core of our company's identity is a strong foundation in engineering. We take great pride in ... Mentor junior engineers and contribute to continuous improvement of engineering processes, tools ...

Fluxergy

Senior Mechanical Engineer

Irvine, CA · On-site

$112K - $148K/yr

At the core of our company's identity is a strong foundation in engineering. We take great pride in ... Mentor junior engineers and contribute to continuous improvement of engineering processes, tools ...

AECOM

Sr Mechanical Engineer - Federal Experience

Orange, CA · On-site

$111K - $147K/yr

... mentoring of junior staff within the Mechanical Department * Review and edit specifications ... Bachelor's degree in Mechanical Engineering from an ABET accredited Mechanical Engineering Program ...

AECOM

Sr Mechanical Engineer - Federal Experience

Orange, CA · On-site +1

$111K - $147K/yr

... mentoring of junior staff within the Mechanical Department * Review and edit specifications ... Bachelor's degree in Mechanical Engineering from an ABET accredited Mechanical Engineering Program ...

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All JobsMechanical Engineering JobsJunior Mechanical Engineering JobsJunior Mechanical Engineering Jobs in Riverside, CA

Junior Mechanical Engineering information

See Riverside, CA salary details

$42.8K

$76.3K

$102.2K

How much do junior mechanical engineering jobs pay per year?

As of Sep 5, 2026, the average yearly pay for junior mechanical engineering in Riverside, CA is $76,306.00, according to ZipRecruiter salary data. Most workers in this role earn between $66,200.00 and $86,100.00 per year, depending on experience, location, and employer.

What does a junior mechanical engineer do?

A Junior Mechanical Engineer assists in designing, developing, and testing mechanical devices and systems under the supervision of senior engineers. Their responsibilities often include creating technical drawings, performing basic calculations, supporting prototype development, and helping to solve engineering problems. They also collaborate with other team members to ensure projects meet specifications and deadlines. This role typically serves as an entry-level position, providing valuable hands-on experience and professional development within the mechanical engineering field.

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

To thrive as a Junior Mechanical Engineer, you need a solid understanding of mechanical engineering principles, a relevant engineering degree, and foundational knowledge of design and manufacturing processes. Familiarity with CAD software (such as SolidWorks or AutoCAD), simulation tools, and basic project management systems is typically required. Strong problem-solving abilities, attention to detail, and effective teamwork and communication skills help you excel in cross-functional environments. These skills are crucial for delivering accurate designs, collaborating efficiently, and supporting successful project outcomes in engineering teams.

What types of projects do junior mechanical engineers typically work on, and how much autonomy can I expect in this role?

As a Junior Mechanical Engineer, you will often be involved in supporting senior engineers with tasks such as drafting designs, conducting simulations, preparing technical documentation, and performing tests on prototypes. Early in your career, you'll typically work within a multidisciplinary team, collaborating with experienced engineers and other departments such as manufacturing and quality assurance. While you may start with closely supervised assignments, many organizations encourage gradual independence as you demonstrate your skills and reliability. Over time, you will likely take on more complex project components and gain opportunities to lead smaller tasks or initiatives.

What is the difference between Junior Mechanical Engineering vs Mechanical Design Engineer?

AspectJunior Mechanical EngineeringMechanical Design Engineer
Required CredentialsBachelor's in Mechanical Engineering or related fieldBachelor's or higher in Mechanical Engineering or Design
Work EnvironmentEntry-level, team-based projects, manufacturing or R&D settingsDesign-focused tasks, CAD software, product development teams
Employer & Industry UsageManufacturing, automotive, aerospace, HVACProduct design, engineering firms, industrial equipment

Junior Mechanical Engineers typically perform basic engineering tasks under supervision, focusing on learning and supporting projects. Mechanical Design Engineers concentrate on creating and refining product designs using CAD tools, often requiring more specialized design skills. While both roles require a mechanical engineering background, the Design Engineer role emphasizes design and development, whereas the Junior Mechanical Engineer role is more about supporting engineering processes and gaining experience.

How do I get my first job as a junior mechanical engineer?

To secure a first junior mechanical engineering position, candidates should obtain a relevant degree such as a bachelor's in mechanical engineering, develop practical skills through internships or projects, and familiarize themselves with industry tools like CAD software. Building a strong resume highlighting technical skills and applying to entry-level roles through online job boards or company websites is essential.

Is junior mechanical engineering a stressful job?

Junior mechanical engineers often face stress related to project deadlines, technical problem-solving, and workload management. The job typically involves teamwork, use of CAD software, and adherence to safety standards, which can contribute to pressure levels, especially during busy periods or complex projects.

What are the most commonly searched types of Mechanical Engineering jobs in Riverside, CA?

The most popular types of Mechanical Engineering jobs in Riverside, CA are:

What are popular job titles related to Junior Mechanical Engineering jobs in Riverside, CA?

For Junior Mechanical Engineering jobs in Riverside, CA, the most frequently searched job titles are:

What job categories do people searching Junior Mechanical Engineering jobs in Riverside, CA look for?

The top searched job categories for Junior Mechanical Engineering jobs in Riverside, CA are:

What cities near Riverside, CA are hiring for Junior Mechanical Engineering jobs?

Cities near Riverside, CA with the most Junior Mechanical Engineering job openings:

Junior Mechanical Engineering jobs near you
Infographic showing various Junior Mechanical Engineering job openings in Riverside, CA as of August 2026, with employment types broken down into 89% Full Time, 7% Part Time, 3% Contract, and 1% Nights. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $76,306 per year, or $36.7 per hour.

Senior Mechanical Engineer - Buildings

WSP

Riverside, CA • On-site

$100K - $147K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 8 days ago

WSP rating

8.6

Company rating: 8.6 out of 10

Based on 69 frontline employees who took The Breakroom Quiz

18th of 72 rated business consultants

Job description

This Opportunity

WSP is currently initiating a search for a Senior Mechanical Engineer to join our Property & Buildings team in Riverside, CA.

This role is ideal for a motivated engineer who brings experience across healthcare and other complex building sectors, including commercial, higher education, and civic projects, and is looking to grow within a collaborative, design-focused environment.

Be involved in projects with our Property & Buildings Team and be part of a growing organization that meets our clients' objectives and solves their challenges. 

Your Impact

  • Perform mechanical engineering design and technical delivery across a diverse portfolio including healthcare, commercial, higher education, and civic projects
  • Support design of HVAC, air distribution, hydronic, plumbing, and building systems
  • Participate in the full project lifecycle, from concept development through construction and close-out
  • Analyze and interpret data from site conditions, drawings, and technical documents to support engineering solutions
  • Prepare and contribute to technical reports, specifications, and design documentation 
  • Ensure designs comply with applicable codes, standards, and sector-specific requirements, including healthcare environments
  • Collaborate with multi-disciplinary teams to deliver integrated project solutions
  • Support client interactions and project meetings, building strong working relationships
  • Mentor junior staff and contribute to team development

Who You Are

Required Qualifications

  • Bachelor's Degree in Mechanical Engineering or Architectural Engineering
  • 5+ years of relevant experience in mechanical design for building systems
  • Experience supporting projects across healthcare and/or commercial, higher education, or civic sectors
  • Strong understanding of HVAC systems and mechanical design principles
  • Experience supporting projects from design through construction
  • Proficiency with Revit, AutoCAD, and related engineering tools
  • Strong communication and collaboration skills

Preferred Qualifications

  • Professional Engineer (PE) license or on track to obtain
  • Experience working on complex healthcare or institutional projects
  • Familiarity with California codes and local jurisdiction requirements
  • Experience working with multi-disciplinary engineering teams
  • LEED AP or sustainability credentials

WSP Benefits:  

WSP provides a comprehensive suite of benefits focused on a providing health and financial stability throughout the employee's career. These benefits include coverage related to medical, dental, vision, disability, and life; retirement savings; paid sick leave; paid vacation (or other personal time); paid parental leave; and paid time off for purposes of bereavement, voting, and/or attendance at naturalization proceedings.  

Compensation: 

Expected Salary: $100,800- $147,000

WSP USA is providing the compensation range that the company in good faith believes it might pay and offer for this position, based on the successful applicant's education, experience, knowledge, skills, abilities in addition to internal equity and specific geographic location. WSP USA reserves the right to ultimately pay more or less than the posted range and offer additional benefits and other compensation, depending on circumstances not related to an applicant's sex or other status protected by local, state, and/or federal law. 

#LI-JM1

About WSP

WSP USA is the U.S. operating company of WSP, one of the world's leading engineering and professional services firms. Dedicated to serving local communities, we are engineers, planners, technical experts, strategic advisors and construction management professionals. WSP USA designs lasting solutions in the buildings, transportation, energy, water and environment markets. With more than 15,000 employees in over 300 offices across the U.S., we partner with our clients to help communities prosper.

www.wsp.com

WSP provides a flexible and agile workplace model while meeting client needs. Employees are also afforded a comprehensive suite of benefits including medical, dental, vision, disability, life, and retirement savings focused on providing health and financial stability throughout the employee's career.

At WSP, we want to give our employees the challenges they seek to grow their careers and knowledge base. Your daily contributions to your team will be essential in meeting client objectives, goals and challenges. Are you ready to get started?

WSP USA (and all of its U.S. companies) is an Equal Opportunity Employer Race/Age/Color/Religion/Sex/Sexual Orientation/Gender Identity/National Origin/Disability or Protected Veteran Status.

The selected candidate must be authorized to work in the United States.

NOTICE TO THIRD PARTY AGENCIES:

WSP does not accept unsolicited resumes from recruiters, employment agencies, or other staffing services. Unsolicited resumes include any resume or hiring document sent to WSP in the absence of a signed Service Agreement where WSP has expressly requested recruitment/staffing services specific to the position at hand.  Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service. 

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