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Mid Level Engineer Jobs in California (NOW HIRING)

Boeing

Mid-Level Systems Engineer

El Segundo, CA · On-site

Mid-Level Systems Engineer Company: The Boeing Company The Boeing Defense, Space & Security (BDS) team is seeking Systems Engineers (Mid-Level) to join the team in El Segundo, CA . The selected ...

Boeing

Mid-Level Systems Engineer

El Segundo, CA · On-site

Mid-Level Systems Engineer Company: The Boeing Company The Boeing Defense, Space & Security (BDS) team is seeking Systems Engineers (Mid-Level) to join the team in El Segundo, CA . The selected ...

Boeing

Mid-Level Systems Engineer

El Segundo, CA

Mid-Level Systems Engineer Company: The Boeing Company The Boeing Defense, Space & Security (BDS) team is seeking Systems Engineers (Mid-Level) to join the team in El Segundo, CA . The selected ...

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$38.5K

$100.4K

$135.7K

How much do mid level engineer jobs pay per year?

As of Jun 10, 2026, the average yearly pay for mid level engineer in California is $100,420.00, according to ZipRecruiter salary data. Most workers in this role earn between $82,900.00 and $115,000.00 per year, depending on experience, location, and employer.

What is a Mid Level Engineer?

A Mid Level Engineer is a professional with a few years of experience—typically between three to five years—in their engineering field. They are responsible for handling moderately complex tasks, collaborating with teams, and often mentoring junior engineers. Mid Level Engineers are expected to work independently on projects, solve technical problems, and contribute to the design, development, or maintenance of systems or products. Their role bridges the gap between entry-level positions and senior engineering roles, combining technical expertise with growing leadership skills.

What are the key skills and qualifications needed to thrive as a Mid Level Engineer, and why are they important?

To thrive as a Mid Level Engineer, you need a solid understanding of engineering principles, hands-on project experience, and typically a relevant bachelor's degree. Familiarity with industry-standard software tools, such as CAD programs or coding languages specific to your field, and certifications like EIT or PMP may be required. Strong problem-solving abilities, effective communication, and teamwork skills set standout candidates apart. These competencies are essential for managing projects efficiently, collaborating across teams, and delivering innovative engineering solutions.

What is the difference between Mid Level Engineer vs Junior Engineer?

AspectMid Level EngineerJunior Engineer
Experience2-5 years of relevant work experience0-2 years of experience or entry-level
SkillsProficient in core technical skills, able to handle projects independentlyBasic understanding, requires supervision and guidance
ResponsibilitiesDesign, develop, and troubleshoot projects; mentor interns or junior staffAssist in tasks, learn on the job, and support senior staff
CertificationsOften required or preferred (e.g., PE, relevant industry certifications)Typically not required

The main difference between a Mid Level Engineer and a Junior Engineer lies in experience, skill level, and responsibilities. Mid Level Engineers are expected to work independently on complex tasks, while Junior Engineers focus on learning and supporting more experienced staff. Employers seek Mid Level Engineers for their ability to contribute immediately and handle projects with minimal supervision.

What are some common challenges faced by mid-level engineers when transitioning from individual contributor tasks to mentoring junior team members?

Mid-level engineers often find themselves balancing their own technical responsibilities while starting to guide and mentor junior colleagues. This transition can be challenging as it requires strong communication skills and the ability to provide constructive feedback without micromanaging. Additionally, mid-level engineers may need to learn how to delegate tasks effectively and prioritize team goals alongside their individual work. Successfully navigating these challenges helps build leadership skills and prepares engineers for more senior roles in the future.
What are the most commonly searched types of Engineer jobs in California? The most popular types of Engineer jobs in California are:
What are popular job titles related to Mid Level Engineer jobs in California? For Mid Level Engineer jobs in California, the most frequently searched job titles are:
What job categories do people searching Mid Level Engineer jobs in California look for? The top searched job categories for Mid Level Engineer jobs in California are:
What cities in California are hiring for Mid Level Engineer jobs? Cities in California with the most Mid Level Engineer job openings:
Mid Level Engineer jobs near you
Infographic showing various Mid Level Engineer job openings in California as of June 2026, with employment types broken down into 97% Full Time, 2% Part Time, and 1% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $100,420 per year, or $48.3 per hour.
Water/Wastewater Engineer (Mid-Level -Senior)

Water/Wastewater Engineer (Mid-Level -Senior)

Carollo Engineers Inc.

Fresno, CA • On-site

$83K - $190K/yr

Full-time

Medical, Life, Retirement, PTO

Posted 24 days ago

Job description

Overview
Carollo Engineers is a leading engineering firm dedicated exclusively to water. For over 90 years, we've specialized in the planning, design, and construction of water, wastewater, stormwater, and reuse facilities, bringing innovative and sustainable solutions to the water sector's most complex challenges.
We work with water agencies, municipalities, utilities, research organizations, and private companies across various industries, including technology, manufacturing, and beyond. These clients choose Carollo because we employ some of the most knowledgeable and experienced professionals in the world. When you join our team, you'll work alongside industry leaders who are advancing the science of water, protecting public health, and building resilient communities.
Carollo's vision is to be the best water consulting firm and the best place for you to build your career. If you're passionate about making a difference in this critical field, we invite you to explore a career with Carollo.
Responsibilities
We are seeking all experience levels of Water/Wastewater Engineers to support our vision of becoming the best water consulting firm. As part of our team, you will work on projects related to municipal water and wastewater treatment plants such as plant expansions, regional water quality studies, and critical water reuse projects as well as infrastructure projects including, but not limited to pump stations, pipelines, facility rehabilitation, and various types of studies. We are seeking all experience levels for this position.
Professional Engineer Through Senior Engineer Additional Responsibilities:
  • Experience delivering and managing water/wastewater infrastructure projects with partial responsibility for budget, schedule, contract obligations, and quality standards.
  • Ability to deliver high quality services within budget and schedule constraints.
  • Assist with coordinating sub-consultant work.
  • May serve as project manager on small to medium sized projects and would assume all project manager responsibilities.
  • Assist project manager with the planning, scheduling, coordinating, supervising, and reviewing of the work of the project team, including: environmental, civil, structural, mechanical, electrical, and instrumentation/controls engineers; drafters, technicians; technical experts; and subconsultants.
  • Assist project manager with meeting budget, schedule, and quality goals.
  • Perform data analysis, system modeling, and hydraulic calculations to size and select facilities.
  • Contribute to a culture of effective communication among project teams, clients, partners, and other stakeholders.
  • Develop and maintain relationships with clients, especially at the staff level.
  • Assist with proposal preparation, including development of scopes of work and engineering fee estimates.
  • Provide on-the-job training and mentoring of project staff and entry level engineers.

Qualifications
  • Bachelor's degree in Civil or Environmental Engineering or related engineering field. Master's degree is preferred.
  • Professional Engineer license in the State of California.
  • Ability to apply critical thinking, analysis, and innovative techniques to develop options and recommendations to solve technical problems.
  • Active in professional associations, including attendance and participation in local, regional and national conferences.
  • Strong verbal and written communication skills.
  • Ability to communicate effectively with clients and project teams.
  • Work well in a team environment.
  • Highly motivated and self-starting.
  • Proficient in MS Word, Outlook, Excel, and PowerPoint.
  • Experience (vary dependent upon hiring level):
    • Professional Engineer: 4-8 years of experience.
    • Mid-level Engineer: 6-12 years of experience.
    • Senior level Engineer: 12+ years of experience.

Preferred Qualifications
  • Master's degree in Civil or Environmental Engineering
  • Familiarity with computer applications including ArcGIS, AutoCAD, and water and sewer hydraulic calculations/modeling software (WaterGEMS, InfoWater, InfoWorks ICM, InfoSWMM)

Compensation Range
$83,300 to $190,000 annually. This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. We may ultimately pay more or less than the posted range, and the range may be modified in the future. An employee's pay within the salary range will be based on several factors including, but limited to, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs.
Other Compensation and Benefits
Carollo is committed to providing employees with a competitive, comprehensive benefits program that provides the support employees and their families need to lead healthy, productive lives. Carollo's benefits package includes paid time off and holidays, comprehensive health insurance coverage, pre-tax savings account options for healthcare, dependent care and commuter expenses, disability insurance and life insurance options for you and your dependents. We also offer free Caregiver Support, Travel Assistance, counseling services, discount programs, and a Lifestyle Reimbursement Account. Other compensation that may be available includes: 401(k) company contribution matching, tuition reimbursement, discretionary bonuses, career advancement bonuses, professional registration bonuses, employee referral bonuses, and compensatory time for exempt employees. Flexible work arrangements may also be available. Eligibility for benefits varies based on employment status.
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