Top Internships in St. Louis, MO

Summer internship to build production-facing realtime intelligence for a mobile app that optimizes campus quest participation. Design context-aware quest logic, detect stalls/drop-offs, suggest micro-actions, instrument evaluation loops, and ship components on top of existing realtime systems to improve behavioral outcomes like IRL quest completion and retention.

Work as a hands-on Product Management intern owning features end-to-end: run user research, write specs and user stories, work with engineering/design/growth to ship, analyze product data, support sprint planning and QA, benchmark competitors, and build roadmaps and documentation.

Assist in developing and maintaining cross-platform Flutter apps for Android and iOS, implement UI/UX with Flutter widgets, integrate Firebase and REST APIs, debug and optimize performance, and collaborate with the team while staying current with Flutter/Dart technologies.

Work on real-world web applications across frontend and backend. Use modern frontend frameworks (React/Angular/Vue) and backend tech (Node.js, Python, Java, PHP). Integrate RESTful APIs with databases (MongoDB, PostgreSQL, MySQL), debug, test, optimize performance, and collaborate with designers and product teams while gaining hands-on mentorship.

Supports employee engagement, onboarding, HR recordkeeping, compliance administration, policy and procedure updates, employee development initiatives, HR systems, reporting, and process improvement. The intern also assists with employee surveys, training materials, documentation, and HR events while gaining practical experience in day-to-day human resources operations.

Supports corporate accounting through monthly financial reporting, account reconciliations, transaction reviews, month-end close, internal controls, audit documentation, and regulatory compliance activities. Reviews financial and operational data, creates dashboards and reports, identifies trends, and contributes to process improvement initiatives. This part-time onsite internship provides practical experience in accounting operations, financial analysis, reporting, and compliance.

Create and publish short-form video content, schedule and manage social media posts, monitor engagement, grow audiences across multiple platforms, analyze performance metrics, and collaborate with founders on content calendars and marketing initiatives. The internship also includes training in AI tools, analytics, and content strategy.

Remote, unpaid internship for current high school students interested in AI, business, or startups. Interns receive training on AI agents and business software, test the Admitpro.ai platform by identifying bugs and evaluating features, provide product feedback, and create and present an independent competitor analysis and startup strategy project.

Paid, in-person internship supporting nonprofit membership operations at the Missouri History Museum. Responsibilities include responding to member inquiries, updating CRM records, preparing mailings, making donor thank-you calls, drafting newsletters, assisting with member events, supporting board programming, engaging visitors, and distributing auction memberships. The role offers hands-on experience in donor relations, public engagement, communications, event coordination, and administrative operations.

Supports the HR team across onboarding, offboarding, employee records, HR databases, engagement activities, training initiatives, documentation, reporting, and general administration. The six-month internship provides practical exposure to end-to-end HR operations while requiring confidentiality, organization, communication, and interpersonal skills.

A prospective internship application for participants in Landor’s 2026 Next Gen Programme whose preferred open vacancies or locations are unavailable. Applicants submit a brief response so Landor can contact them if suitable future positions arise.

Work alongside senior billers to follow up on claim statuses, post payments from ERAs/EOBs, log and categorize denials, prepare patient statements, and maintain internal documentation to support revenue cycle operations.

Supports motion design projects across brand identities, digital experiences, campaigns, social content, and film. Creates animation tests, motion studies, and short-form animations; assists with storyboards, visual research, asset preparation, file organization, rendering, and exports. Participates in creative reviews, presents work, and develops designs based on feedback.

Supports evaluation and governance of agentic AI harnesses by defining benchmarks, running structured evaluations, analyzing telemetry, identifying failure modes, tuning prompts and models, and maintaining audit-ready governance processes. The intern will collaborate with AI and AppSec teams, document methodologies, and participate in limited client-facing engagements under mentorship. This is a part-time, remote, 12-week paid internship requiring 25–29 hours weekly.

Supports multi-cloud lab infrastructure across AWS, Azure, and Google Cloud using Terraform, Ansible, and GitHub Actions. Assists with infrastructure-as-code modules, CI/CD pipelines, security tool evaluations, agentic automation, client POC engagements, technical documentation, and findings reports under mentorship. The part-time remote internship provides hands-on exposure to cloud infrastructure, DevOps, cybersecurity tooling, and AI-driven evaluation environments.

Conduct legal research, summarize findings, and assist with drafting, reviewing, and proofreading regulatory filings, agreements, correspondence, and other legal documents. The intern will organize legal resources, attend meetings, collaborate with attorneys and colleagues, and support additional legal projects. This hybrid summer role requires in-person work in Midtown Manhattan and residence in an approved state.

Student internship supporting People Operations: create a strategic hiring plan for a part-time Coordinator, build internal communication structures for the internship program, and complete a course-aligned project with mentor guidance to develop internal processes for educational and marketing teams.

Support JMI's marketing team by creating customer profiles, helping develop targeting strategies for other interns, and completing a flexible, course-aligned market research project under mentor guidance.

Provides remote IT support to client administrators and end-users, focusing on phone services, configuration changes, and ticket handling through phone, email, and chat. Collaborates with team members to support customer success before and after sales. The six-month internship requires strong communication, problem-solving, organization, technical curiosity, and the ability to work independently in a home office.

Develop deep learning and AI/ML models to predict cardiac events from ECG and physiological signals. Apply signal processing, analyze implantable-device datasets, build Python tools, validate algorithms, and support feasibility studies for diagnostic features. Collaborate with clinical, software, and hardware teams to improve implantable-device performance and patient outcomes.

Support go-to-market strategy and execution across inbound and outbound channels: define ICPs, join user calls, create Excel demo videos, run outreach using Clay/HeyReach/Instantly, post and measure performance on social platforms, and optimize funnel metrics (visits, conversion, retention, referral).

Six-month engineering internship building production backend services and AI pipelines. Design SQL schemas (PostgreSQL), implement SaaS integrations (REST APIs, webhooks), work with embeddings, transformer models and vector databases, build end-to-end data processing pipelines, and contribute to code reviews and architecture discussions.

Support BIM/VDC workflows from design through project completion: facilitate 2D/3D coordination, model missing content, perform 4D/5D schedule and cost analyses, run clash detection and assist conflict resolution, and produce material quantity take-offs for estimating.

Intern will identify productivity challenges and process gaps across global sales teams, prioritize improvement opportunities, and build AI-enabled solutions using Microsoft Copilot, agents, chatbots, Excel automation, and related tools. The role also supports sales process documentation, implementation planning, stakeholder collaboration, governance, and measuring efficiency improvements and business impact.

Project-based marketing internship creating a marketing strategy for JMI's educational content. Interns work within a six-person marketing team, are matched with volunteer mentors, and will produce strategic media to promote content and membership. Flexible project scope to meet spring internship course requirements.