Engineering Intern Jobs in Saint Louis, MO
GFT.
$21 - $28
St. Louis, Missouri
Support real client projects by assisting in developing substation layout drawings, including plan and elevations, yard layouts, grounding details, and raceway designs for new and existing substations. Demonstrated interest in high voltage power engineering, substation design or renewable energy through prior internships, work experiences, or applied academic coursework.
Maxcess International
St. Louis, MO
Additional duties may include data entry, BOM support, automation projects to streamline processes, periodic testing, and results summary with report out, light design work to support New Products or Research into new technology, based on business need and skill set of the student. Position Summary: The Intern/Co-Op position at Maxcess Rotometrics is targeting Junior or Senior level undergraduate students currently enrolled in an Accredited engineering program at a College or University.
Willert Home Products
St. Louis, MO
While performing the duties of this job, the employee is regularly required to stand; walk; use hands to handle, or feel objects, tools, or controls; reach with hands and arms. Success in this role requires strong problem-solving skills, mechanical aptitude, and the ability to develop creative solutions and see them through from concept to implementation on the production floor.
Larson Engineering
St. Louis, MO
Larson provides a challenging and empowered environment that encourages employee growth and provides flexibility for your active life outside of work. Established in 1979, Larson Engineering, Inc. is an employee-owned company with a long-standing track record of success.
City of Clayton
Clayton, MO
The Civil Engineering Intern duties may include construction/permit inspections for roadway, alley, sidewalk, and streetscape projects; tracking and documentation of construction project quantities; surveys of City sidewalks and other infrastructure to determine necessary repairs. This policy extends to all stages of the employment process, including but not limited to: recruiting or advertising for employment; evaluating the skills, education and experience of applicants; establishing rates of pay and terms, conditions and privileges of employment (including training opportunities); and promoting, upgrading, demoting, transferring, laying off and terminating employees.
Wieland
Granite City, Illinois
Spend time learning the process flow of 100+ different sub-processes utilizing 2000+ different stationary machines and 400+ mobile equipment to get an understanding of the products recycled. Work in the field (including outdoors and in & around various industrial equipment) to properly assess current operating process to develop engineering solutions that increase safety and productivity.
EFK Moen
$22 - $24
St. Louis, MO
As a Civil Engineer Intern at EFK Moen, you'll work alongside our professional engineers to gain hands-on experience supporting real-world transportation design projects in a collaborative, flexible work environment. Project emphasis is transportation engineering design for both public and private sectors which range in scope from small to multimillion-dollar designs.
GOGcG
Chesterfield, Missouri
At GCG, We Make Connections Possible through a nationwide network of facilities providing the wire, cable, automation and associated products that ensure connections among families and friends, co-workers and customers, and the industrial equipment used across the country. This internship requires a minimum of 10 hours a week and offers a remote work arrangement, after an initial fully onsite training period at Neff Power’s office located at 675 Spirit Valley Central Dr. Chesterfield, MO 63005.
Phillips 66
$2894 - $3308
Roxana, IL
Through its refining business segment, Phillips 66 is upgrading crude oil and other feedstocks into higher-value petroleum products including clean-burning gasoline, ultra-low-sulfur diesel, jet fuel, lubricants, petroleum coke and other specialty products while maintaining a high regard for safety and environmental limitations. Areas of focus may include optimization of an existing process, improving energy efficiency, handling key logistics, improving equipment reliability, monitoring emissions or completing permit applications, optimizing the use of equipment by finding and eliminating defects, using sophisticated modeling and data analysis software tools.
City of O'Fallon
O'Fallon, MO
We're looking for someone who is currently enrolled in an accredited college or university and have obtained the status of at least junior, with a working knowledge of the principles and practices of Civil Engineering, Environmental Engineering, Mechanical Engineering, Chemical Engineering or a closely related field. O'Fallon, Missouri, has grown from small, rural roots into a thriving City that is home to international employers and more than 1,800 local businesses.
Guarantee Electrical
St. Louis, MO
Support project management and field construction in planning for project construction, including set-up of digital project files and project file setup; management of project documentation throughout the construction progress from project start through close out. Assigned to support project manager(s) with the responsibility of assisting by coordinating and planning efforts to effectively complete documentation associated with assigned projects and maintaining a smooth workflow.
ARCO a Family of Construction Companies
St. Louis - Brentwood, Missouri
As an IT Intern, you will assist all areas of the Technology department including responding to support tickets, maintaining technical documentation, and assisting with account creation. NECESSARY QUALIFICATIONS: Candidates must be currently enrolled in a university or technical program in one of the following or a related technical field Information Technology, Computer Science, or Cybersecurity.
Guarantee Electrical
St. Louis, MO
Must be a current student pursuing a degree in Electrical, Construction Management, Construction Technology, Electrical estimating / Engineering, Occupational Safety or similar program of study. We are currently seeking Interns who have interest in pursuing careers in Innovation and IT Solutions,Marketing, Human Resources and Safety to join our St.
APTIM
$20 - $25
St. Louis, MO
Compensation depends on several factors including: experience, education, key skills, geographic location of the position, client requirements, external market competitiveness, and internal equity among other employees within APTIM. The Aptim Construction Management (CM) Internship Program is designed to provide students with hands-on experience in the construction field while supporting ongoing project needs.
True Manufacturing
O'Fallon, Missouri
Overview: The Process/Project Engineering Co-op will work with the Process and Project Engineers to provide day to day support for all production lines, perform engineering design projects, and develop and implement production related projects. Qualifications: Full time student, pursuing a bachelor’s degree in industrial engineering, mechanical engineering, engineering management or similar field required.
Lavner Education
St Louis, MO
Deliver quality, educational instruction to elementary and middle school-aged students in a class and one-on-one environment from the provided curriculum for STEM topics includingAI - Artificial Intelligence,Coding, Robotics, Minecraft, Roblox, Game Design, Video Production for YouTube, STEM & Medicine, 3D Modeling, All-Girls STEAM, Science, Digital Art, Graphic Design, Filmmaking, Digital Animation, and more. Lavner Education, one of the world's leading EdTech companies for kids, powers the Lavner Camps, Tech Revolution, Lavner IQ, and Lavner Fitness brands, offering year-round camps, classes, tournaments, and online tutoring to kids worldwide.
ENFRA LLC
Creve Coeur, Missouri
Overview: The Co-Op performs technical activities on assigned projects under supervision of a Licensed Professional Engineer and/or a Mechanical Designer EIT, including participation in technical studies, investigations, and designs on assigned projects. Accompanies staff/project manager in performing project job site visits during construction to monitor progress and ensure conformance to design specifications, owner expectations, and building codes.
MasterCard
$122000 - $207000
O'Fallon, MO
Title and Summary Lead Cloud Engineer – Database Platform Engineering Overview Mastercard’s Database Platform Engineering Team is seeking a highly skilled Lead Cloud Engineer to strengthen database product development and advance cloud engineering practices. This role will focus on building secure, scalable, and automated database solutions across AWS and Azure environments, enabling efficient delivery of database services and supporting enterprise cloud initiatives.
Clayco
Saint Louis, MO
Responsibilities range from participation in initial project set up and buyout, cost spread/estimate familiarity, job quantity tracking, on-site daily activity involvement, concrete material tracking, equipment and manpower productivity tracking, invoice approval, extra work ticket tracking, participation in job cost reporting, project safety compliance, quality control compliance, production analysis/tracking. Is attentive to detail and accuracy, is committed to excellence, looks for improvements continuously, monitors quality levels, finds root cause of quality problems, owns/acts on quality problems.
MasterCard
$200000 - $320000
O'Fallon, MO
Pay Ranges O'Fallon, Missouri: $200,000 - $320,000 USD New York City, New York: $240,000 - $384,000 USD Everyone wants easier ways to pay; we invent them. This is an exciting, cutting-edge leadership position that requires a highly motivated candidate who is intellectually curious about emerging technologies and possesses the creativity and leadership skills to drive groundbreaking solutions from concept to commercialization.
MasterCard
$138000 - $221000
O'Fallon, MO
Title and Summary Manager, Software Engineering Overview: Mastercard’s Decision Management Platform team is seeking a hands-on Software Development Manager to lead and mentor a team of talented software engineers in delivering high-quality, scalable, and secure software solutions. This role combines technical depth and leadership excellence, driving clean code practices, engineering rigor, and on-time delivery of products aligned with Mastercard’s strategic goals.
MasterCard
$152000 - $258000
O'Fallon, MO
Take a holistic approach to problem solving, by connecting the dots during a production event thru the various technology stack that makes up the platform, to optimize mean time to recover • Work with a global team spread across tech hubs in multiple geographies and time zones • Share knowledge and mentor junior resources • Support deployments of code into multiple lower environments. Title and Summary Director, Reliability Engineering Overview The Services Access BizOps Team is looking for a Director to lead Business Operations Engineers , who can help us solve problems, support our applications and lead Mastercard in business operations and best practices.
MasterCard
$212000 - $339000
O'Fallon, MO
Title and Summary Vice President, Software Engineering Overview The Platform Services group is responsible for designing, building, and operating the technology that powers Mastercard’s market-facing and core technology platforms. • Experience with Java, Shell Scripting, SQL • Mainframe technologies including COBOL and advantage Ideal Candidate Profile • Proven experience leading large-scale engineering organizations with a focus on platform operations.
MasterCard
$170000 - $281000
O'Fallon, MO
In line with Mastercard’s total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.
MasterCard
$212000 - $339000
O'Fallon, MO
The ideal candidate brings a strong techno-functional background, deep expertise in Java-based distributed systems, and a proven track record of building high-availability, low-latency financial platforms with rigorous operational discipline. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.
MasterCard
$152000 - $258000
O'Fallon, MO
This role requires strong people leadership skill, experience leading network operations organizations, network systems health check validations, troubleshooting issues, and optimizing performance to support the organization's mission-critical operations. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.
THD Design Group
Chesterfield, MO
Our Surveying/Engineering staff has provided economical and efficient surveys/designs for numerous projects ranging from single family residential, large commercial and industrial developments and municipal projects. Perform geotechnical field work including field reconnaissance, preparation of field boring logs, obtaining soil samples, construction observation, and material testing services.
LS Power Development, LLC
St. Louis, Missouri
LS Power actively invests in and scales businesses that are meeting the growing needs of the energy expansion, including electric vehicle charging, demand response, microgrids, renewable fuels and waste-to-energy platforms. Founded in 1990, LS Power is a premier development, investment, and operating company focused on the North American power and energy infrastructure sector, with leading platforms across generation, transmission and energy expansion solutions.
Harrison Consulting Solutions
Saint Louis, MO
Multi-state design firm is seeking a Transportation Engineer (Traffic/Technology) for their team in St. Working knowledge of Synchro, SimTraffic, HCS, VISSIM or other similar software.
ENFRA LLC
$88380 - $117970
Creve Coeur, Missouri
Overview: The IS Technical Services Building Systems Analyst III (BSA III) is highly skilled member of the IS Technical Services (TS) team, with an engineering background, responsible for evaluating, verifying, and optimizing the operation of new and existing building systems both on-site or remotely. Work with project delivery team partners to ensure implemented energy conservation measures and building system programming are well documented, understood, and archived on-site and in Company storage systems designated for the project.
ENFRA LLC
$76860 - $102620
St. Louis, Missouri
Overview: The IS Technical Services Building Systems Analyst II (BSA II) is highly skilled member of the IS Technical Services (TS) team, with an engineering background, responsible for evaluating, verifying, and optimizing the operation of new and existing building systems both on-site or remotely. Work with project delivery team partners to ensure implemented energy conservation measures and building system programming are well documented, understood, and archived on-site and in the Company storage systems designated for the project.
The Cigna Group
$22 - $35
St. Louis, MO
To be considered, candidates must demonstrate the following qualifications through their resume, including relevant coursework, school projects, internships, co-ops, or professional experience: + Education: Currently enrolled in a Bachelor’s or Master’s program in technical disciplines such as Computer Science, Data Science, Cybersecurity, Engineering, or a closely related field. Build Community & Connections: Our interns thrive in a vibrant, supportive community—connecting through curated events, cross-functional projects, employee resource groups, and peer-driven initiatives that foster lasting relationships and professional growth.
Millstone Weber LLC
St Charles, MO
Charles, MO, supporting the Survey team on heavy civil construction projects with a strong focus on CAD drafting and office-based survey support. To accomplish our goals of quality, innovation and continuous improvement, we are committed to partnering with employees and subcontractors who share our company values and seek to continually exceed the expectations of project owners.
Roeslein & Associates
St. Louis, MO
You will participate in meetings, work on real projects, and help Roeslein satisfy its clients' needs. Roeslein’s summer internship program focuses on giving interns real-world experience.
Jones Lang LaSalle Incorporated
Berkeley, MO
Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward. Working directly with JLL's experienced HVAC technicians, you'll learn essential technical skills through practical application while supporting our facilities management teams.
True Manufacturing
O'Fallon, Missouri
LS Power Development, LLC
Chesterfield, Missouri
LS Power actively invests in and scales businesses that are meeting the growing needs of the energy expansion, including electric vehicle charging, demand response, microgrids, renewable fuels and waste-to-energy platforms. Founded in 1990, LS Power is a premier development, investment, and operating company focused on the North American power and energy infrastructure sector, with leading platforms across generation, transmission and energy expansion solutions.
MasterCard
$96000 - $163000
O'Fallon, MO
Increase automation and tooling to reduce toil and manual intervention ITSM Practices: • Analyses ITSM activities of the platform and provide feedback loop to development teams on operational gaps or resiliency concerns Role Qualifications The ideal candidate will have experience in many of these areas: • BS degree in Computer Science or related technical field involving coding (e.g., physics or mathematics), or equivalent practical experience. Title and Summary Senior BizOps Engineer The Reactive Systems Architecture BizOps team is looking for a BizOps Engineer who can help us solve problems, build our CI/CD pipeline and lead Mastercard in DevOps automation and best practices.