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Mid Level Engineer Jobs in Missouri (NOW HIRING)

Mid-Level Test Engineer

Chesterfield, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Earth City, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Saint Ann, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Ballwin, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Hazelwood, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Valley Park, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Florissant, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Bridgeton, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Saint Louis, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Saint Louis, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

Mid-Level Test Engineer

Saint Louis, MO · On-site

$87K - $157K/yr

Leidos is seeking an experienced Mid-Level Test Engineer to join the Chinook Program supporting an Intelligence Community customer. This is an opportunity to work alongside talented engineers ...

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Showing results 1-20

Mid Level Engineer information

See Missouri salary details

$36.6K

$95.4K

$129K

How much do mid level engineer jobs pay per year?

As of Sep 3, 2026, the average yearly pay for mid level engineer in Missouri is $95,444.00, according to ZipRecruiter salary data. Most workers in this role earn between $78,800.00 and $109,300.00 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 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 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 does a mid level engineer make?

A mid-level engineer typically earns between $70,000 and $100,000 annually, depending on the industry, location, and experience. They usually have 2-5 years of experience and may work with specific tools or technologies relevant to their field.

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

The most popular types of Engineer jobs in Missouri are:

What are popular job titles related to Mid Level Engineer jobs in Missouri?

For Mid Level Engineer jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Mid Level Engineer jobs in Missouri look for?

The top searched job categories for Mid Level Engineer jobs in Missouri are:

What cities in Missouri are hiring for Mid Level Engineer jobs?

Cities in Missouri with the most Mid Level Engineer job openings:

Infographic showing various Mid Level Engineer job openings in Missouri as of August 2026, with employment types broken down into 94% Full Time, 3% Part Time, and 3% Contract. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution, with an average salary of $95,444 per year, or $45.9 per hour.

$110 - $180/hr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 5 days ago


Key responsibilities

  • Lead and oversee Phase I ESAs, Phase II ESAs, permitting, CERCLA/RCRA investigations, remedial design, environmental remediation, and environmental compliance inspections.

  • Develop work plans, health and safety plans, field sampling plans, and sampling and analysis plans.

  • Perform sampling of soil, groundwater, surface water, sediment, soil vapor, and air, and oversee remediation projects.


Job description

Headquartered in St. Louis, Missouri, Professional Environmental Engineers, Inc. (PE) is a full-service environmental engineering and consulting small business that specializes in providing cost-effective environmental solutions for both government and commercial clientele. PE is seeking a dynamic, ambitious, and versatile Environmental Engineer, Geologist, or Scientist to work out of our St Louis office that desires a variety of tasks, enjoys a fast-paced environment, likes new challenges and wants to grow, and is a team player. This role blends technical expertise with project management, ensuring compliance with client requirements and regulatory guidelines. The ideal candidate will have considerable experience managing and executing environmental projects with complex soil, groundwater, and other media, as well as maintain a history of providing on-time, on-budget delivery of services and deliverables.

RESPONSIBILITIES
  • Lead and oversee Phase I ESAs and related due diligence projects, as well as Phase II ESAs, permitting, CERCLA/RCRA investigations, remedial design, environmental remediation, and environmental compliance inspections through monitoring and maintaining project schedules and budgets, evaluating project productivity and quality, and directing the complete technical operations of the project.
  • Develop work plans, health and safety plans, field sampling plans, and sampling and analysis plans.
  • Prepare soil boring logs, cross-sections, contour maps, well schematics, and site maps.
  • Perform sampling of soil, groundwater, surface water, sediment, soil vapor, and air and other field related tasks.
  • Perform oversight of remediation projects.
  • Prepare highly technical reports, tables, spreadsheets, and maps for client and regulatory agency review.
MINIMUM REQUIREMENTS
  • Bachelor’s degree in engineering (environmental, civil, or chemical) or science (earth and planetary sciences, soil science, geophysics, hydrogeology, environmental geology, biology, or chemistry) with an environmental emphasis.
  • At least 10 years of total experience and 5 years of Project Management experience
  • Knowledge of geologic principles and local geologic framework, including the ability to independently identify local soil types using USCS or equivalent soil classification system and correlate site geology to regional geologic framework.
  • Knowledge of environmental regulatory programs including but not limited to federal programs such as CERCLA, RCRA, and NEPA and state regulations such as Missouri Risk Based Corrective Action (MRBCA), Kansas Risk Based Standards, and the Illinois Site Remediation Program (SRP).
  • Strong communication and interpersonal skills to provide effective intra and inter-discipline coordination on projects, as well as effective communication with clients and vendors.
  • Must be organized, self-directed, able to prioritize and multi-task, work in a team environment and take direction from others and have the ability/desire to lead tasks.
  • Proficient in computer software programs, particularly MS Word, Excel, PowerPoint, and Adobe Acrobat.
  • Ability to lift and carry up to 40 lbs occasionally.
  • A valid driver’s license and the ability to travel (less than 25%).
  • OSHA 40-hr HAZWOPER/Current 8-hr Refresher.
  • Professional Engineer or Registered/Professional Geologist licensure
  • Project Management Professional certification
  • ASTM Phase I ESA Training
  • Experience with Stormwater Pollution Prevention Plan (SWPPP) Inspections and developing Spill Prevention Control Countermeasure (SPCC) Plans.
  • NEPA experience
BENEFITS

PE offers competitive wages and comprehensive benefits including medical, dental, vision, paid time off, 401(k), life, disability, and professional development.

Posting Notices

PE is an equal opportunity and affirmative action employer.

PE is committed to providing reasonable accommodations to qualified individuals with disabilities upon request.

PE has a Drug-Free Workplace Policy and requires all job applicants to take a drug test prior to hire. An applicant who fails the drug test will not be hired.

To ensure the employee can perform his or her duties safely, a physical examination will be required after an offer of employment. Employment will be conditional based on the job-related results of the examination. This examination is required only because the employee’s safety requires the examination.

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