Top Internships in Denver & Boulder, CO

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.

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

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.

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.

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 and lead low-to-medium complexity projects across the project lifecycle: define scope and SOW, develop project plans and financials, manage risks, track KPIs, forecast budgets and staffing, coordinate cross-functional stakeholders, drive project execution, and communicate status to leadership.

Assist pharmacy operations including processing prescriptions and OTC purchases, stocking and securing supplies, entering prescription data, providing member/customer service, operating cash registers, merchandising, and maintaining required documentation and regulatory confidentiality under company and federal/state policies.

Support Sam's Club pharmacy by processing prescriptions and OTC sales, stocking and merchandising pharmacy inventory, maintaining documentation and compliance with laws/policies, operating registers, and delivering member service in a safe environment. Assist with paperwork, claims, returns, and member inquiries while following company standards and privacy rules.

Remote 3-month marketing internship (18–25 hrs/week) supporting digital marketing activities: social media management and engagement, CRM updates, email campaigns, SEO improvement, analytics monitoring, market research, promotional activities, and aligning marketing strategies with sales goals while maintaining the company’s online reputation.

Support marketing analytics by analyzing digital channel performance, building and maintaining KPI dashboards, ensuring data accuracy, and collaborating with cross-functional teams to turn insights into actionable recommendations.

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.

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.

Remote unpaid 20-hr/week graphic design internship supporting marketing: create social, presentation, web, and multimedia assets; maintain brand consistency; iterate on designs; collaborate with teams; learn design and digital marketing best practices.

Work as a Python development intern building applications and APIs, processing and analyzing data, working with databases and data pipelines, contributing to system architecture, writing clean documented code, and collaborating with the team. Strong emphasis on backend development, SQL, ORMs, and REST API design with potential conversion to full-time.

The R&D Engineering Intern will assist in researching and prototyping low-power tracking protocols, engaging in mesh networking and technical document preparation.

As a SkillBridge Intern in Marketing, you'll collaborate on product delivery, ensure project success, and engage clients, while gaining valuable experience in a remote or on-site setting.

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.

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.

Support operation and advancement of autonomous laser-integrated PFIB instrumentation. Perform instrument maintenance, Python-based scripting, and develop computer vision/semantic segmentation pipelines. Assist with sample preparation, data collection, technical reporting, and exploration of foundation models/LLMs for instrument interfacing and AI-guided decision-making in a multidisciplinary research environment.