Top Internships in St. Louis, MO

Supports semiconductor engineering projects through device testing, characterization, data analysis, process development, and optimization. Collaborates with cross-functional teams to troubleshoot technical issues and improve semiconductor design and manufacturing processes. The internship provides hands-on experience with semiconductor technology, engineering tools, and simulation software.

Develop and test AI software using large datasets, Python, JavaScript, and C++. Evaluate algorithms, statistics, and data to improve industrial applications. Collaborate with machine learning and data engineers on end-to-end AI and integration solutions, stay current with AI trends and regulations, and present project progress to leadership and stakeholders.

Develop, test, and integrate AI software for aerospace and industrial applications. Interns will use Python, JavaScript, and C++ to build AI solutions, evaluate data and algorithms, collaborate with machine learning and data engineers, monitor AI trends and regulations, and present progress to leadership and stakeholders.

Supports semiconductor engineering projects through device testing, characterization, data analysis, process development, optimization, and technical troubleshooting. Collaborates with cross-functional engineering teams to develop and improve semiconductor manufacturing and design processes. The intern gains hands-on experience with semiconductor technology, device physics, radiation effects, digital design, and EDA tools while contributing to high-quality semiconductor solutions.

Supports test engineering activities by preparing and executing test plans, gathering and analyzing test data, troubleshooting issues, improving test processes, and documenting results. Collaborates with engineering teams to support product testing, quality assurance, system integration, and delivery of high-quality aerospace products.

Systems Engineering Interns assist with designing and developing system solutions, gathering requirements, defining specifications, integrating and testing components, troubleshooting technical issues, and documenting engineering activities. The role provides hands-on aerospace experience, cross-functional collaboration, mentorship, and exposure to system design, integration, testing, modeling, and simulation.

Develop and implement embedded software and systems for aerospace devices. Responsibilities include coding, testing, troubleshooting, software quality assurance, system efficiency and stability analysis, and I/O performance optimization. Interns work with hardware and embedded technologies while receiving mentorship and professional development. The role is available at multiple U.S. locations and includes relocation benefits and short-term housing for eligible interns.

Supports aerospace test engineering by preparing and executing test plans, gathering and analyzing test data, documenting results, troubleshooting issues, improving processes, and preparing technical and project status updates. Collaborates with engineering, manufacturing, operations, program management, laboratory, and test teams on technologies supporting aviation, space exploration, and defense capabilities.

Supports product marketing, market research, customer and competitive analysis, product positioning, pricing, marketing plans, demand generation, digital marketing, and go-to-market strategies. Collaborates with cross-functional teams on new product introductions, brand promotion, customer insights, and performance monitoring while developing recommendations that support growth and customer needs.

Develop and integrate complex software applications for Honeywell Aerospace products. Interns will contribute software features, collaborate with engineering teams, apply software development lifecycle and configuration management practices, analyze problems, and develop innovative solutions while receiving mentorship and hands-on experience.

Develop and implement embedded software and devices for aerospace systems. Responsibilities include analyzing system efficiency and stability, optimizing I/O performance, supporting software quality assurance, and coding, testing, and troubleshooting system software. The intern will work with embedded hardware and software technologies while receiving hands-on experience, mentorship, relocation benefits, and short-term housing when eligible.

Develop and integrate complex software applications for Honeywell Aerospace products. Interns will contribute software features, generate innovative solutions, collaborate with experienced engineers, and gain hands-on experience through mentorship and professional development. The role requires continued enrollment in a relevant degree program and eligibility to work in the United States without current or future sponsorship.

Supports mechanical system, component, and assembly design and development; conducts engineering research and analysis; collaborates with cross-functional teams; helps solve technical problems and optimize designs; participates in testing and validation; and gains experience with industry-standard tools and software.

Supports the design and development of electrical systems and components, conducts testing and performance analysis, collaborates with cross-functional teams, and gains experience with industry-standard tools, electrical codes, and standards under experienced engineering guidance.

Supports the design and development of mechanical systems, components, and assemblies; conducts engineering research and analysis; collaborates with cross-functional teams to solve technical problems; participates in testing and validation; and gains exposure to industry-standard tools and software through hands-on aerospace projects.

The Systems Engineering Intern will assist with designing and developing system solutions, gathering requirements, defining specifications, integrating and testing system components, troubleshooting technical issues, and documenting engineering activities. The intern will collaborate with experienced engineers and cross-functional teams while gaining hands-on experience in system design, integration, testing, modeling, and simulation within Honeywell Aerospace.

Supports product marketing, market research, customer and competitive analysis, product positioning, pricing, go-to-market planning, digital marketing, demand generation, brand promotion, and new product launches. Collaborates with cross-functional teams to develop marketing plans, identify growth opportunities, monitor offering performance, and improve processes under the guidance of a regional marketing manager.

Supports the design and development of electrical systems and components, conducts testing and performance analysis, collaborates with cross-functional teams, and gains practical experience with industry-standard tools, technologies, electrical codes, and standards. The intern receives mentorship while contributing to aerospace engineering projects.

Supports SEO through keyword research, website performance and content gap analysis, and content optimization. Assists with paid media execution and reporting, marketing data analysis, website landing page creation, and data visualization. May also support eCommerce optimization, graphic design, video editing, corporate meetings, and product launches while learning digital marketing tools and techniques.

Support Fetch’s privacy and data governance program under Corporate Counsel, Privacy. Responsibilities include documenting data discovery exercises, mapping data flows, maintaining data inventories, reviewing legal and technical documentation, and communicating project updates. The three-month remote internship begins in January 2027 and requires 12–15 hours per week. The intern will gain exposure to privacy compliance, data governance, and in-house legal operations at a consumer technology company.

Supports consumer marketing and brand growth through strategic business planning, category and competitor analysis, P&L support, product innovation, pricing, merchandising, consumer research, marketing communications, and performance tracking. Collaborates with sales, finance, supply, regulatory, demand planning, global marketing, and agency partners. The four-month internship provides formal and on-the-job development, with potential consideration for full-time employment.

Develop knowledge-management articles, training content, job aids, visual aids, and knowledge checks for adult learners. Collaborate with business stakeholders, manage project deadlines, present learning content to large groups, and help translate complex software information into accessible training materials. The role offers hands-on experience in instructional design, operations, and learning and development.

Supports the Data Science and Machine Learning team by analyzing large-scale datasets, identifying anomalies and root causes, developing data validation and normalization methods, and improving the accuracy of derived data products. The intern will evaluate models, translate ambiguous problems into statistical formulations, debug messy data, test hypotheses, and implement maintainable analytical solutions using Python, SQL, and distributed data platforms.

Support the Data Engineering team by building data pipelines, experimenting with machine learning models, and contributing to AI initiatives (forecasting, automation, intelligent data processing). Deliver proof-of-concept solutions, collaborate with data engineers, analytics teams, and business stakeholders to advance AI/ML capabilities.

Support building and redesigning responsive, mobile-friendly websites; create wireframes and sitemaps; develop front-end UIs and assist with back-end tasks; optimize for performance, scalability, and SEO; participate in brainstorming, debugging, testing, and follow clean coding and version-control best practices under developer mentorship.