Javascript Intern Jobs in Waltham, MA (NOW HIRING)

Delaware North Boston Holdings is hiring a Digital Developer Intern to join our team at TD Garden in Boston, Massachusetts.

Are you an undergraduate or graduate student seeking an internship in a fast-paced, inclusive environment with real-world learning opportunities? Delaware North internships are paid and can be completed for academic credit. Summer internship dates typically span 10-14 weeks between September 2026 and January 2027.  

By participating in our internship program, you will gain valuable work experience, develop your leadership capabilities, and make an impact on the business. You will discover how a global hospitality company operates and work alongside exceptional team members who exemplify our values: Lean Forward, Come Together, Stand Up, Do Right, and Think Guest.

Ready to help create the future of hospitality? Apply today to see why this internship is your best career move yet.

Information on our comprehensive benefits package can be found at https://careers.delawarenorth.com/whatweoffer.

We care about our team member’s personal and professional well-being. Delaware North provides a benefits package designed to give you the comfort, safety, and security you need to deliver exceptional experiences for our guests. All team members receive benefits including:

• Weekly pay
• Training and development opportunities
• Employee discounts
• Flexible work schedules

• Build and deploy email campaigns within Salesforce Marketing Cloud, including template creation, dynamic content setup, QA, and scheduling
• Partner with the Salesforce Marketing Cloud Developer to support scripting (AMPscript, SQL, and/or SSJS) for personalization, segmentation, and automation
• Assist in building and maintaining automated customer journeys, including triggered sends, audience segmentation, and lifecycle campaigns
• Support data management efforts, including audience creation, data extensions, imports/exports, and ensuring data integrity across campaigns
• Collaborate with marketing stakeholders (email, digital, e-commerce, partnerships) to translate campaign requirements into technical execution
• Perform QA testing across emails, journeys, and automations to ensure accuracy in personalization, links, and rendering across devices and inboxes
• Assist in optimizing email performance through A/B testing, personalization strategies, and data-driven insights
• Document processes, campaign builds, and technical workflows to improve team efficiency and scalability
• Support reporting and analysis of email and digital campaign performance using Salesforce Marketing Cloud and other analytics tools
• Support content updates and enhancements within web team content management systems to ensure accuracy, consistency, and optimal user experience
• Assist in managing and optimizing the e-commerce experience for BostonProShop.com within the BigCommerce CMS, with a focus on improving site UX and supporting

• Pursuing or recently completed a Bachelor’s or Master’s degree in Marketing, Information Systems, Computer Science, Data Analytics, or a related field
• Strong interest in marketing technology (MarTech), CRM systems, and email marketing platforms
• Proficient in JavaScript
• Exposure to or interest in SQL and/or other scripting languages (AMPscript, or similar) is strongly preferred
• Basic experience or familiarity with HTML/CSS (required for email development)
• Familiarity with Salesforce and Salesforce Marketing Cloud is a plus
• Detail-oriented with strong problem-solving and troubleshooting skills, especially in technical environments
• Ability to manage multiple projects and meet deadlines in a fast-paced environment
• Strong communication skills with the ability to translate marketing needs into technical execution
• Availability to work onsite Tuesdays, Wednesdays, and Thursdays

Delaware North purchased the historic Boston Garden in 1975 and later constructed its successor, TD Garden, and neighboring The Hub on Causeway, both of which we continue to own and operate. As New England’s largest sports and entertainment arena, TD Garden is the home of the storied NHL’s Boston Bruins and NBA’s Boston Celtics franchises and hosts over 200 events annually with over 3.5 million visitors.

Our business is all about people, and that includes you. At Delaware North, you’re not just part of a team — you’re part of a global legacy: a family-owned company with 100+ years of history behind it. Our operations span the world, offering you unique paths to growth and success.

Who says you can’t love where you work? With jobs in iconic sports arenas, stunning national parks, exciting casinos, and more, we pride ourselves on giving the world great times in great places. And whether you’re interested in restaurants, hotels, sports, gaming, operations, or retail, part-time or full-time, we’re invested in helping you achieve your career goals.

Together, we’re shaping the future of hospitality — come grow with us!

Delaware North, along with its subsidiaries, is an equal opportunity employer, showcasing job opportunities and considering applicants for all positions without regard to race, color, religion, sex, gender identity, national origin, age, disability, protected veteran status, sexual orientation, or any other legally protected status.