Top Internships in St. Louis, MO

Software engineering intern supporting the design, development, integration, and enhancement of complex software applications. The role involves contributing to team goals, creating innovative solutions, developing high-quality features, applying software development lifecycle and configuration management practices, and collaborating with engineers. Interns receive mentorship, hands-on experience, relocation benefits, and short-term housing when eligible.

Mechanical Engineering Interns will assist with designing and developing mechanical systems, components, and assemblies; conduct engineering research and analysis; collaborate cross-functionally on technical problems; and participate in testing and validation. The role provides hands-on exposure to industry-standard tools, manufacturing processes, product testing, and real-world engineering projects, along with mentorship and professional development.

Develop and implement embedded software and systems, analyze system efficiency and stability, optimize I/O performance, and support software quality assurance. Responsibilities include coding, testing, troubleshooting, and monitoring embedded system software while working closely with hardware. The internship provides hands-on engineering experience, mentorship, professional development, relocation benefits, and short-term housing eligibility.

Build and ship production software across the frontend and backend, working closely with founders, customers, and product teams. Develop AI-powered features and systems involving web scraping, unstructured data, PDF parsing, and cloud infrastructure. Translate real-world real estate and financing problems into technical solutions, make high-impact decisions, and own shipped code. The internship may convert to a full-time role.

Accounting intern supporting commercial real estate client accounting. Duties include processing accounts payable and receivable, reconciling accounts, resolving client issues, preparing journal entries and financial statements, supporting audit compliance, assisting with office operations, providing customer service, and completing special projects.

Summer 2027 interns will support client consulting or data consulting projects under supervision. Solutions Consulting interns help understand client needs, solve business problems, develop technology-enabled solutions, and communicate recommendations. Data Consulting interns support data ingestion, transformation, model development, deployment, MLOps, data engineering, and applied data science projects. The role requires analytical ability, communication, collaboration, organization, and proficiency with Excel.

Accounting intern supporting commercial real estate client accounting teams. Duties include processing accounts payable and receivable, reconciling accounts, resolving client issues, preparing journal entries and financial statements, supporting audits, and providing customer service. The intern will also assist with office supplies, front desk coverage, mail distribution, and special projects while gaining practical accounting experience.

Support outbound prospecting, market research, CRM tracking, product demos, and cross-team coordination. Draft MoMs, follow-ups, proposals, and content while learning B2B SaaS and AI.

Performs diagnostic radiology procedures under the supervision of licensed radiologic technologists and imaging leadership. Operates radiology equipment, selects exposure factors, obtains high-quality images, and provides compassionate patient care across all age groups. Responsibilities include transporting and positioning patients, recognizing emergencies, maintaining care-quality standards, and communicating effectively in a fast-paced environment.

Supports Kiva’s Business Development team by researching prospective partners, conducting outreach, managing inquiries, analyzing partner performance, creating case studies and pitch materials, and supporting partner onboarding and engagement. The intern also assists with marketing collateral, presentations, charts, graphs, and borrower-support content while developing partnership-building, research, communication, and relationship-management skills.

Supports Kiva’s strategic partnerships pipeline through prospect research, outreach drafting, pitch decks, proposals, conference preparation, and partnership materials. Tests and documents AI tools for business development workflows, helps organize engagement history, and contributes to templates and special projects. The role provides practical experience in business development, storytelling, partner engagement, and AI-enabled workflows while supporting corporate, foundation, and individual donor partnerships.

Paid six-week remote internship supporting government data infrastructure. Responsibilities include building and maintaining web scrapers and ingestion pipelines, researching data sources, validating data quality, monitoring source failures, improving scraper resilience, and documenting extraction logic. The role uses TypeScript, Python, browser automation, APIs, structured data formats, Git, and AI-assisted tooling.

Supports instructional design for commercial sales training by applying the ADDIE process, developing interactive eLearning with multimedia tools, creating curricula, evaluating learning materials, and assisting with LMS operations. The intern works with Articulate 360, Vyond, Adobe Creative Suite, and other content development platforms while demonstrating strong communication, organization, problem-solving, and independent work skills.

Paid, year-long digital communications internship supporting a nonprofit marketing team. Responsibilities include researching and writing blog stories, creating and editing TikTok and Instagram Reels, scheduling social media posts, producing Mailchimp eNewsletters, updating WordPress content, and providing event coverage. The intern will develop skills in writing, editing, social media, email marketing, and digital content strategy while building a final portfolio.

Supports internal tax operations by organizing, scanning, tracking, routing, and processing client tax documents. Assists with assembling tax returns, e-filing, preparing informational tax documents, meeting government deadlines, and providing general operational support. The role requires a bachelor's degree in progress, proficiency with Microsoft Windows and Office, reliable transportation, and willingness to travel to client sites.

Supports control systems modernization and greenfield automation projects. Assists with engineering deliverables such as network architecture diagrams, instrumentation databases, cabinet drawings, DCS/SIS/PLC configurations, and user interface displays. Participates in hardware and software testing, heat and power calculations, networking and virtualization maintenance, and project database activities while gaining hands-on experience with Emerson DeltaV tools.

Supports Purina animal nutrition sales with national retail and farm-and-ranch accounts. Responsibilities include executing sales-growth projects, participating in sales calls, conducting market research, and traveling extensively to assigned territories. The intern must be able to travel up to 75%, lift 50 pounds, traverse uneven ground, and maintain a valid unrestricted driver's license. The position runs from May through August 2027 and is virtual, with proximity to an airport required.

Supports Kiva U.S. loan operations by screening applications, assisting borrowers during fundraising, managing delinquency, improving processes and infrastructure, collaborating with partners, analyzing data, collecting borrower stories, and enhancing training resources. The role is a six-month, part-time remote volunteer internship supporting entrepreneurs and cross-functional program initiatives.

Corporate Treasury Services intern supporting special projects, training, community service, networking, and department presentations. The role provides practical experience in financial services and requires collaboration with department managers, communication skills, basic accounting or math ability, confidentiality, and proficiency with Microsoft Office. The internship runs from June 1 through July 30, 2027, in Jackson, Memphis, or Birmingham.

Supports employees with everyday technology needs, including laptop, account, and application setup and maintenance. Assists with support requests, troubleshoots common technical issues, contributes to IT documentation and projects, and collaborates across the organization. The intern gains hands-on exposure to IAM, MDM, project management solutions, troubleshooting, and security practices while working hybrid in Midtown Manhattan.

Develop and deploy AI solutions from problem framing through production. Responsibilities include identifying AI opportunities, leading MVP development, building data pipelines, experimenting with generative LLMs, fine-tuning NLP models, and delivering scalable features. The intern will collaborate cross-functionally, communicate technical impact to business audiences, and work with cloud platforms such as AWS or Google Cloud.

Conduct quantitative UX research using surveys, statistical modeling, and log analysis to understand user attitudes and behavior. Translate findings into compelling insights that inform Pinterest’s product roadmap and business decisions. Collaborate with product managers, engineers, designers, data professionals, and researchers on impactful user experiences.

As an Intern, you will monitor geopolitical events affecting supply chains, analyze data for risks, and support the Intelligence Solutions team.

Supports museum exhibit design and development by creating and editing 3D models, floor plans, elevations, fabrication drawings, and design documentation. Collaborates with writers, graphic designers, media producers, educators, fabricators, and project stakeholders. Attends project, accessibility, fabrication, and production meetings; contributes design concepts, conducts research, tracks revisions, and presents work. The internship is in person with some possible remote work and requires 20–29 hours weekly throughout 2027.

Paid summer internship supporting multiple Federal Reserve business areas, including HR, financial management, audit, banking supervision, business analysis, facilities, operations, reporting, and process improvement. Interns may build dashboards, support budgeting and forecasting, assist audits, manage vendors, analyze data, automate workflows, and participate in projects. The role is hybrid, runs nine weeks, and includes networking, mentoring, and professional development opportunities.