Top Internships in Denver & Boulder, CO

Support finance transformation initiatives by maintaining project artifacts, providing status updates, performing analysis, creating presentation materials, developing data-driven insights, and aligning stakeholders across the Finance Transformation portfolio.

Intern will support mechanical design and testing for spacecraft systems: develop CAD models, perform thermal and stress analysis, prototype and select materials, document results, and assist hardware testing using tools such as MATLAB. Internship runs Sep–Dec 2026 and includes mentorship and cross-functional development.

Assist in monitoring insider risks, support data protection, investigate security alerts, and maintain operational governance in a security team.

Hands-on internship supporting design, development, and testing of ground support equipment (GSE) for spacecraft. Tasks include mechanical and electrical design, PCB/layout support, DAQ integration, test system fabrication and checkout, wiring and signal-integrity work, documentation, on-site test support, and collaboration with cross-functional engineering teams.

The Phishing Analyst-SkillBridge Intern will assist in threat detection and analysis, focusing on phishing attempts. Responsibilities include identifying and mitigating threats using AI and collaborating with teams to enhance cybersecurity measures.

Part-time remote legal internship supporting regulatory and marketing compliance. Conduct FDA/FTC and advertising legal research, review marketing materials, draft memos, assist with contract lifecycle and corporate records, and support policy and training development.

Remote internship supporting tax research, testing, and documentation. Duties include researching tax form changes, interpreting tax code updates, writing requirements for programmers, designing and executing test cases, validating tax calculations, and contributing to release notes and customer guidance while learning tax software and tools.

Manage day-to-day operations for two YouTube podcast channels: review 3–4 edited videos weekly, curate IG/TikTok clips, maintain podcast/YouTube schedule, write podcast ads, create mash-up episodes, and support PR/marketing projects and freelance editing coordination.

This intern role in Federal Security Operations focuses on cybersecurity, project tracking, and maintaining relationships with customer stakeholders in a mission-driven environment.

This internship role focuses on SRE skills, requiring collaboration and problem-solving in dynamic environments for Zscaler's Zero Trust Exchange team.

As a Detection Engineer Intern, you will analyze telemetry, research coverage opportunities, improve workflows, and communicate threat findings effectively.

Support planning, executing, and optimizing paid digital acquisition campaigns. Coordinate content and landing pages, run A/B tests, analyze marketing data, create performance reports, and recommend optimizations to improve ROAS.

Manage three branded Reddit accounts: post 2–3 times per week per brand, engage with users and comments per brand guidelines, craft brand-specific Reddit strategies, and coordinate with an outside contractor to manage meetings and goals.

Part-time remote internship supporting the Email Automation team: transfer and code email copy into templates, maintain templates, perform QA, run semi-weekly A/B tests and data tracking, and assist with organizational and cross-functional email operations.

Support the sales team by conducting cold calls, generating leads, assisting with sales strategies, handling administrative tasks, maintaining customer databases/CRM, and collaborating to meet sales targets while gaining hands-on experience.

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.

Run and coordinate qualitative user research: plan and moderate interviews and focus groups, translate goals into discussion guides, produce transcripts and structured insight summaries, and communicate findings to product teams while working remote-first.

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.

Own end-to-end product features: conduct user research, translate insights into specs and user stories, collaborate with engineering/design/growth, analyze product data, support sprint planning/QA/releases, benchmark competitors, and build roadmaps and documentation to launch features.

Remote unpaid video-editing internship: edit and assemble raw footage into polished content, add transitions, color correction, sound design, graphics and captions, adapt assets for social platforms, manage multiple projects, iterate on stakeholder feedback, and organize media libraries while collaborating with marketing and creative teams.

Write and publish high-quality blog posts and case studies by researching eCommerce/logistics topics and interviewing customers. Propose original content ideas, craft narratives that showcase customer success and Wondys impact, collaborate with the team, use Figma/Framer/HubSpot/Google Workspace for content workflows, and track content performance to improve engagement.

Support and grow Wondy’s social media across LinkedIn, Instagram, Twitter, and other platforms. Create and schedule engaging content, monitor performance metrics, interact with followers, and provide insights. Collaborate with founders, propose trends-driven ideas, and use tools like Framer and HubSpot to streamline workflows and analytics.

Support website content editing, formatting, and publishing. Update job listings and resources, optimize content for SEO and accessibility, test site functionality, integrate multimedia, and collaborate with marketing to maintain brand voice and improve usability.

Lead Marketing / Public Relations Intern will own marketing and PR initiatives, collaborate with founders on branding, analyze market trends, manage campaigns, and use Google Workspace, HubSpot, and Framer. Opportunity to grow into a full-time leadership role at an eCommerce-focused AI startup.

Remote, unpaid 6-month UI/UX internship (20 hrs/week) supporting the Marketing team: create wireframes, prototypes, high-fidelity designs, conduct user research and usability testing, maintain design systems, collaborate cross-functionally, iterate based on feedback, and support product strategy while meeting deadlines.