Top Internships in Jacksonville, FL

As a Content Marketing Intern, you will assist in executing Reedsy's content strategy, focusing on SEO, content creation, and promotion to acquire leads.

Assist in developing and testing features for a data security platform, collaborate on projects, participate in research, and support documentation efforts.

The intern will collaborate with stakeholders to design and develop instructional content, manage courses, and evaluate learning outcomes within the IDD team.

As a Data Science Intern, you'll learn to translate business challenges into statistical problems, analyze large datasets, build machine learning models, and communicate insights effectively.

As a Full Stack Engineering Intern, you will work on building Nash's agentic layer, shipping features using React and Python, translating logistics problems into products, participating in design discussions, and writing clean, well-tested code.

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.

As a Product Manager Intern, you'll collaborate with leadership to shape the product, define requirements, and drive feature delivery for an analytics platform.

As a Growth Team SkillBridge Intern, you'll assist with market research, lead generation, proposal management, client engagement, and support sales efforts.

Build and enhance full-stack web applications and APIs using React/TypeScript and Python. Work with PostgreSQL, DynamoDB, AWS, event-driven architectures, CI/CD, and AI-assisted development tools to prototype and improve AI-native engineering workflows.

Support FP&A team with forecasting, budgeting, variance analysis, monthly/quarterly reporting, financial modeling, dashboard maintenance, and ad-hoc analyses. Partner with cross-functional teams to collect inputs and improve reporting processes.

As an Accounting Intern, you'll perform routine accounting tasks, assist in reporting, and gain exposure to financial analysis and forecasting while maintaining a flexible schedule.

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.

Unpaid 3–6 month internship offering hands-on experience across social work, case management, HR, development, marketing, retail merchandising, project management, and events. Interns assist with client intake, outreach, research, content creation, administrative tasks, event support, and daily operations while building skills, networks, and receiving reference letters upon completion.

As a GTM Associate, you'll produce social media content, create videos, support email marketing, develop blog posts, engage with the community, and report on performance metrics, all while working in a remote startup environment.

As an MBA Summer Intern, you will lead a high-impact project for 10-12 weeks, collaborating with stakeholders, analyzing data, and presenting your results. Projects focus on sales enablement, product implementation, or operational scaling.

The Engineering Intern will assist senior engineers in plant operations, maintenance processes, safety program updates, and data analysis for optimization initiatives.

The intern will collaborate with statisticians to conduct analysis using AI and machine learning techniques, implementing models and analyzing clinical data.

This internship under the SkillBridge Program involves supporting threat intelligence, technical analysis, and intelligence editing, focusing on cybersecurity and associated risks.

Support recruiting, onboarding, employee engagement, workforce administration, and HR operations for a federal consulting firm. Source and screen candidates, coordinate interviews and onboarding, maintain ATS and HR records, assist with reporting, documentation, and special HR projects in a remote, part-time internship.

Six-month People Operations (HR) internship supporting onboarding, payroll audits, benefits enrollments, compliance documentation, HRIS maintenance (e.g., Rippling), employer branding, and cross-functional HR/Finance projects. Gain hands-on experience with employee lifecycle, data accuracy, and HR systems while assisting state reporting and agency liaison work.

Produce high-volume performance video ads for platforms like Meta and AppLovin using generative video tools. Build fast prototypes and production-ready creative systems, pressure-test and integrate generative models, perform advanced prompt engineering and LoRA fine-tuning, and design embedding/LLM workflows to optimize ROAS. Remote contract role working US hours.

Produce high-volume performance video ads using generative models and design systems. Rapidly prototype in Figma, execute polished motion in After Effects, pressure-test generative tools, implement prompt engineering and fine-tuning workflows, and optimize creative for ROAS on Meta and AppLovin.

Intern will build Zepho's social media presence, create content, manage influencer relationships, and track performance metrics. This role offers potential for full-time conversion.

As an Intern, you will assist with day-to-day tasks, participate in meetings, support departmental operations, and help with SAP implementation projects.

As a Growth Intern at N1, you'll help drive growth initiatives, conduct market research, analyze competitors, and develop internal tools.