Internship Jobs in South River, NJ

Passaic Valley Sewerage Commission

Newark, NJ

Created in 1902, PVSC is the 5th largest facility of its kind in the United States, directly serving approximately 1.5 million residents in 48 municipalities located in Bergen, Essex, Hudson, Passaic and Union Counties. Working Conditions for Operations and Facilities Internship: Workers are employed in conditions associated with a wastewater treatment plant and sewer collection system and will be required to work indoors and outdoors.

Marriott Vacations Worldwide

New York, NY

For example, in a Marketing Internship the participant may be expected to learn and master the role of a non-commissioned marketing associate in addition to opportunities to learn aspects of the commission-based roles, sales department, and other areas. Interns will participate in the following activities: comprehensive onboarding, operational duties within their assigned department, eLearning, and virtual meetings with company leaders, job shadowing, and a direct mentorship with an onsite leader.

Six Flags Great Adventure

Jackson, NJ

Preparing, handling and serving food products including but not limited to meat, meat products, pork, shellfish, egg, dairy, gluten, soy, and nut products. The Food and Beverage Department at Six Flags Great Adventure has an exciting opportunity available and is looking for candidates to be a part of the Hospitality Management – Food and Beverage Internship Program.

Bel Fuse Inc.

$60000 - $75000

West Orange, NJ

The Treasury Analyst is responsible for supporting daily cash operations, processing electronic payments, and assisting with foreign exchange transactions to help optimize Bel’s liquidity and financial performance. This role works closely with the Treasurer to maintain banking relationships, ensure compliance with internal controls, and prepare basic management reports.

Big Spaceship

New York, NY

WHAT: We’re hoping to have 4 interns join the team this summer, with Internship opportunities available in the following disciplines: Creative (Art Direction or Copywriting), Design, Social Strategy & Account Management. Our diverse team of entrepreneurial spirits, creative minds, and makers brings bold ideas to life for some of the world's most innovative and culturally connected brands.

Stagwell Global, LLC

$20 - $25

New York, New York

Overview: The goal of our internship program is to provide an all-encompassing experience allowing our interns to execute projects, collaborate alongside leadership team members, and gain exposure to the operations behind a growing, public organization. As a network, we seek out a skilled and dynamic talent pipeline, invest in programs that help develop diverse talent for the future benefit of our industry, and strive to build an inclusive environment where all employees can bring their full selves to work.

Healthfirst

$40200 - $54570

New York, NY

Perform analysis and data projects to begin to develop an understanding of how to monitor cost and revenue trends, use analytics and various types of healthcare data to identify improvement opportunities, and model and communicate impact to providers . Duties & Responsibilities: Develop an understanding of the Healthfirst overall business and risk model, with a focus on how to support provider organizations to improve financial performance and how value-based care can drive improved outcomes .

Healthfirst

$40200 - $54570

New York, NY

Students currently enrolled as a Junior or Senior in an accredited Bachelor’s degree program, or an accredited Master’s in Healthcare Administration, Math, Business, Statistics, Economics, Finance, Accounting, or related programs . Position Summary: The Products Finance Business Partner Intern will play a key role supporting the products (Medicaid, Long-Term Care, and Medicare) and product strategies.

tarte cosmetics

New York, NY

tarte is the pioneer of high-performance naturals & one of the fastest growing cosmetic companies in the U.S. Nearly 25 years ago, founder & CEO Maureen Kelly set out to create a cruelty-free line of easy-to-use, life-proof products packed with good-for-you ingredients that deliver real results without compromise. As interns, you'll dive into the world of marketing, gaining hands-on experience across various departments including PR, Events, Influencer Marketing, Digital Marketing, Brand Marketing, Global Marketing, Partnerships, Visual Merchandising, and Key Accounts, all within our New York City office.

The Cigna Group

Morris Plains, NJ

These states include: Alabama, Alaska, Arizona, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Iowa, Kansas, Maryland, Massachusetts, Michigan, Nebraska, Ohio, Pennsylvania, Texas, Utah, Vermont, and Washington State._. If you will be working at home occasionally or permanently, the internet connection must be obtained through a cable broadband or fiber optic internet service provider with speeds of at least 10Mbps download/5Mbps upload.

Humana

$37440 - $96800

Trenton, NJ

Interns will drive strategic projects, gain exposure to executive leadership, and develop the skills and insights needed to launch a successful post-MBA or graduate school career in healthcare.  . + Demonstrated leadership experience through professional, academic, military, or extracurricular roles, showcasing the ability to lead teams, drive cross-functional initiatives, influence stakeholders, and deliver measurable results in a dynamic environment .  .

Humana

$37440 - $96800

Trenton, NJ

Interns will drive strategic projects, gain exposure to executive leadership, and develop the skills and insights needed to launch a successful post-MBA or graduate school career in healthcare.  . + Demonstrated leadership experience through professional, academic, military, or extracurricular roles, showcasing the ability to lead teams, drive cross-functional initiatives, influence stakeholders, and deliver measurable results in a dynamic environment .  .

Middlesex County

New Brunswick, New Jersey

We offer various Public Sector opportunities including Human Resources, Communications, Finance, Public Health, Community Services, & more! The Spring internships will be from February to May & the Summer internships from June to September.

The Cigna Group

$22 - $35

Morris Plains, NJ

To be considered, candidates must demonstrate the following qualifications through their resume, including relevant coursework, school projects, internships, co-ops, or professional experience: + Education: Currently enrolled in a Bachelor’s or Master’s program in technical disciplines such as Computer Science, Data Science, Cybersecurity, Engineering, or a closely related field. Build Community & Connections: Our interns thrive in a vibrant, supportive community—connecting through curated events, cross-functional projects, employee resource groups, and peer-driven initiatives that foster lasting relationships and professional growth.

Radwell International

Willingboro, NJ

Projects & Work Experience: Interns assigned meaningful, real business projects toapply academic knowledge and deliver measurable value. Under the direction of the Departmental Manager, the Intern will be assigned a project at the beginning of their 10-week internship, in which they will work to complete during their employment.

Penderie

Edgewater, NJ

TAP is an internship offered to current student or recent degree/diploma holders with concentration in information technology, programing languages & web technologies, business analysis, project management etc. MAP is an internship program offered to the current students and recent degree/diploma holders with concentration in business administration, marketing, economics, human resources, mass communication etc.

Humana

$37440 - $96800

Trenton, NJ

Interns will drive strategic projects, gain exposure to executive leadership, and develop the skills and insights needed to launch a successful post-MBA or graduate school career in healthcare. + Demonstrated leadership experience through professional, academic, military, or extracurricular roles, showcasing the ability to lead teams, drive cross-functional initiatives, influence stakeholders, and deliver measurable results in a dynamic environment.

Four Rivers Nuclear Partnership LLC

Burlington, NJ

Internship programs at Four Rivers Nuclear Partnership will provide an exciting opportunity to work with a team of experienced professionals dedicated to the safe environmental remediation of the U.S. Department of Energy Paducah Site. The internship provides students with an opportunity to apply the classroom learning to practical tasks and project activities.

Community FoodBank of New Jersey

$20 - $27

Hillside, NJ

In this program, you will participate in job shadowing, support administrative tasks, analyze data, and explore various fields, including Accounting/Finance, Facilities, Communications, Community Health, Human Resources, Information Technology, Marketing, Operations, Resource Development and Workforce Development. Keep a close focus on understanding the nuances of our organization, including how we effectively deliver essential services to our neighbors in need and work alongside community partners to address pressing social challenges.

Visiting Nurse Service of New York d/b/a VNS Health

$20 - $25

New York, New York

To showcase the knowledge and experience gained during the summer program, students will work independently or in cross-functional teams to deliver a creative and strategic business solution to VNS leaders. Overview: The VNS Health Summer Internship program is a ten-week experience for college students to gain first-hand insights inside a multifaceted nonprofit healthcare organization.

JPMorgan Chase

New York, NY

JPMorganChase is looking for highly motivated User Experience Designers and User Experience Researchers who will be part of multi-disciplinary teams committed to designing the future of banking through researching and designing useful, usable, and desirable products for our customers, clients and employees. With over 55,000 technologists globally and an annual tech spend of $15 billion, JPMorgan Chase is dedicated to innovating and improving the design, analytics, development, coding, testing and application programming that goes into creating high quality software and new products.

tarte cosmetics

New York, NY

tarte is the pioneer of high-performance naturals & one of the fastest growing cosmetic companies in the U.S. Nearly 25 years ago, founder & CEO Maureen Kelly set out to create a cruelty-free line of easy-to-use, life-proof products packed with good-for-you ingredients that deliver real results without compromise. The brand is 85% vegan (with 100% vegan skincare!) & proud to be the #1 concealer brand in the US.* tarte is committed to sharing its passion for skinvigorating ingredients with the world: it has in-store presence in over 20 countries & online at tarte.com, shipping to over 50 countries worldwide!

tarte cosmetics

New York, NY

tarte is the pioneer of high-performance naturals & one of the fastest growing cosmetic companies in the U.S. Nearly 25 years ago, founder & CEO Maureen Kelly set out to create a cruelty-free line of easy-to-use, life-proof products packed with good-for-you ingredients that deliver real results without compromise. The brand is 85% vegan (with 100% vegan skincare!) & proud to be the #1 concealer brand in the US.* tarte is committed to sharing its passion for skinvigorating ingredients with the world: it has in-store presence in over 20 countries & online at tarte.com, shipping to over 50 countries worldwide!

tarte cosmetics

New York, NY

tarte is the pioneer of high-performance naturals & one of the fastest growing cosmetic companies in the U.S. Nearly 25 years ago, founder & CEO Maureen Kelly set out to create a cruelty-free line of easy-to-use, life-proof products packed with good-for-you ingredients that deliver real results without compromise. The brand is 85% vegan (with 100% vegan skincare!) & proud to be the #1 concealer brand in the US.* tarte is committed to sharing its passion for skinvigorating ingredients with the world: it has in-store presence in over 20 countries & online at tarte.com, shipping to over 50 countries worldwide!

tarte cosmetics

New York, NY

tarte is the pioneer of high-performance naturals & one of the fastest growing cosmetic companies in the U.S. Nearly 25 years ago, founder & CEO Maureen Kelly set out to create a cruelty-free line of easy-to-use, life-proof products packed with good-for-you ingredients that deliver real results without compromise. The brand is 85% vegan (with 100% vegan skincare!) & proud to be the #1 concealer brand in the US.* tarte is committed to sharing its passion for skinvigorating ingredients with the world: it has in-store presence in over 20 countries & online at tarte.com, shipping to over 50 countries worldwide!

tarte cosmetics

New York, NY

tarte is the pioneer of high-performance naturals & one of the fastest growing cosmetic companies in the U.S. Nearly 25 years ago, founder & CEO Maureen Kelly set out to create a cruelty-free line of easy-to-use, life-proof products packed with good-for-you ingredients that deliver real results without compromise. The brand is 85% vegan (with 100% vegan skincare!) & proud to be the #1 concealer brand in the US.* tarte is committed to sharing its passion for skinvigorating ingredients with the world: it has in-store presence in over 20 countries & online at tarte.com, shipping to over 50 countries worldwide!

tarte cosmetics

New York, NY

tarte is the pioneer of high-performance naturals & one of the fastest growing cosmetic companies in the U.S. Nearly 25 years ago, founder & CEO Maureen Kelly set out to create a cruelty-free line of easy-to-use, life-proof products packed with good-for-you ingredients that deliver real results without compromise. The brand is 85% vegan (with 100% vegan skincare!) & proud to be the #1 concealer brand in the US.* tarte is committed to sharing its passion for skinvigorating ingredients with the world: it has in-store presence in over 20 countries & online at tarte.com, shipping to over 50 countries worldwide!

tarte cosmetics

New York, NY

tarte is the pioneer of high-performance naturals & one of the fastest growing cosmetic companies in the U.S. Nearly 25 years ago, founder & CEO Maureen Kelly set out to create a cruelty-free line of easy-to-use, life-proof products packed with good-for-you ingredients that deliver real results without compromise. The brand is 85% vegan (with 100% vegan skincare!) & proud to be the #1 concealer brand in the US.* tarte is committed to sharing its passion for skinvigorating ingredients with the world: it has in-store presence in over 20 countries & online at tarte.com, shipping to over 50 countries worldwide!

Bristol Myers Squibb

Madison, NJ

Work-life programs include paid national holidays and optional holidays, Global Shutdown Days between Christmas and New Year's holiday, up to 120 hours of paid vacation, up to two (2) paid days to volunteer, sick time off, and summer hours flexibility. Associates can tailor their rotational experiences across the various Commercial functions, including US Marketing, Sales, Global Commercialization, International, Business Insights & Technology, and Market Access, to align with their interests and career goals.

The Cigna Group

$33 - $40

Morris Plains, NJ

The ALDP is designed to cultivate future leaders in analytics and data science by combining cutting-edge technical training—including artificial intelligence and machine learning—with business acumen, strategic thinking, and leadership development. These states include: Alabama, Alaska, Arizona, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Iowa, Kansas, Maryland, Massachusetts, Michigan, Nebraska, Ohio, Pennsylvania, Texas, Utah, Vermont, and Washington State._.

Juniper Communities

Hamilton Township, NJ

The intern will gain supervised, hands-on experience working with senior residents, supporting their emotional and psychological well-being, and learning about geriatric mental health care in a residential setting. We are seeking a motivated and compassionate Psychology Intern to join our team at Juniper Village at Hamilton, an assisted living facility dedicated to enhancing the quality of life for older adults.

Brother International Corporation

Bridgewater, New Jersey

Eligible student applicants will be current sophomores and juniors (rising juniors and seniors respectively during the Summer 2026 program period), possess US work authorization, and be able to work full-time, following the expected schedule and on-site presence of the position. Experience & Qualifications: Must be a present college sophomore or junior (rising junior or rising senior during the Summer 2026 program period) returning to an undergraduate program following the summer to be eligible.

World Insurance Associates, LLC.

Iselin, NJ

As a Summer Intern, you will support World Insurance’s sales, service, and brokerage teams by assisting with account analysis, client advisor support, renewal preparation, and new business activities. World Insurance Associates is a unique insurance and professional services organization offering top products and services from major providers, combined with attentive service from local agents.

Humana

$37440 - $96800

Trenton, NJ

Interns will drive strategic projects, gain exposure to executive leadership, and develop the skills and insights needed to launch a successful post-MBA or graduate school career in healthcare. + Demonstrated leadership experience through professional, academic, military, or extracurricular roles, showcasing the ability to lead teams, drive cross-functional initiatives, influence stakeholders, and deliver measurable results in a dynamic environment.

Humana

$37440 - $96800

Trenton, NJ

Interns will drive strategic projects, gain exposure to executive leadership, and develop the skills and insights needed to launch a successful post-MBA or graduate school career in healthcare. + Demonstrated leadership experience through professional, academic, military, or extracurricular roles, showcasing the ability to lead teams, drive cross-functional initiatives, influence stakeholders, and deliver measurable results in a dynamic environment.

Humana

$37440 - $96800

Trenton, NJ

Interns will drive strategic projects, gain exposure to executive leadership, and develop the skills and insights needed to launch a successful post-MBA or graduate school career in healthcare. + Demonstrated leadership experience through professional, academic, military, or extracurricular roles, showcasing the ability to lead teams, drive cross-functional initiatives, influence stakeholders, and deliver measurable results in a dynamic environment.

Humana

$37440 - $96800

Trenton, NJ

Interns will drive strategic projects, gain exposure to executive leadership, and develop the skills and insights needed to launch a successful post-MBA or graduate school career in healthcare. + Demonstrated leadership experience through professional, academic, military, or extracurricular roles, showcasing the ability to lead teams, drive cross-functional initiatives, influence stakeholders, and deliver measurable results in a dynamic environment.

Pennrose

Brooklyn, New York

Participants will attend internal and external meetings with executives, participate in educational sessions, visit construction sites and operating properties, and engage in the design and financing processes. Stakeholder PresentationsCreate professional PowerPoint presentations for financiers, municipalities, community stakeholders, and other audiences, effectively communicating our mission and addressing potential concerns.

International Foundation for Ethics and Audit

New York, NY

Working knowledge of Microsoft Office applications and virtual collaboration tools (e.g., PowerPoint, Teams, Zoom), as well as social media platforms (e.g., LinkedIn). We are looking for a highly motivated undergraduate or graduate student to work with IFEA full-time, for 8 weeks from June 1, 2026 to July 24, 2026.

International Foundation for Ethics and Audit

New York, NY

Working knowledge of Microsoft Office applications and virtual collaboration tools (e.g., PowerPoint, Teams, Zoom), as well as social media platforms (e.g., LinkedIn). We are looking for a highly motivated undergraduate or graduate student to work with IFEA full-time, for 8 weeks from June 1, 2026 to July 24, 2026.

Jones Lang LaSalle Incorporated

New York, NY

Capital Markets at JLLequipsour clients with the strategic advice they need to create a world ofopportunityto enhance their economic interest in real estatebydrivinginvestments and acquisitions through analyzing the markets to see what the biggest impact for our clients would be.  . Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward.

HarperCollins Publishers

New York, NY

Candidates who are available to work in a full-time capacity in 2026 or 2027 are eligible for this internship; open to rising seniors, recent graduates, master’s students, or entry level candidates with up to two years of work experience. Working alongside experienced analysts and business leaders, you’ll gain hands-on exposure to real-world projects that drive efficiency, innovation, and growth.

Healthfirst

$40200 - $54570

New York, NY

If you have a disability under the Americans with Disability Act or a similar law and want a reasonable accommodation to assist with your job search or application for employment, please contact us by sending an email to careers@Healthfirst.org or calling 212-519-1798 . At this time, Healthfirst will only consider applicants who are presently authorized to work for any employer in the United States and who will not require visa sponsorship from Healthfirst now or in the future, to retain their authorization to work in the United States.

Healthfirst

$40200 - $54570

New York, NY

Modernize existing Python scripts currently running on a virtual machine task scheduler by refactoring them into well-structured, maintainable, and production-ready codebases . Interns must be within a commutable distance from our New York offices at 100 Church Street, and are expected on site Tuesdays, Wednesdays, and ThursdaysWho We Are:

Healthfirst

$40200 - $54570

New York, NY

Preferred Qualifications: Senior on track to graduate with a Bachelor’s degree (Spring 2026), preferably in analytics, public health, business, economics, or another related field, Master’s degree candidate, preferably in public health, business, or health administration, or Dental graduate student. Interns must be within a commutable distance from our New York offices at 100 Church Street, and are expected on site Tuesdays, Wednesdays, and Thursdays.

Amwins Internships

Hackettstown, NJ

That's why our internship program is designed to give you real-world experience, meaningful projects, and a chance to explore the insurance industry from the inside out. You won't be fetching coffee — you'll be building skills, making connections, and discovering what a career in risk management and insurance could look like for you.

Ecolab Manufacturing, Inc.

$23 - $25

Linden, NJ

What You Will Do:- Complete an independent project(s) under primary trainer's direction to yield calculated ROI- Complete safety training & technical lessons that serve as an introduction to water treatment applications- Observe and participate in service as it is provided to customers to assure accurate chemical application, process optimization and documentation- Complete introductory training of the consultative sales approach- Visit multiple customer sites across the region (40-100% of training time spent in field) to learn best practices and types of unit applications and treatment approaches- Build key relationships and interaction with departments and personnel that will be critical to success in the field- Work within various regional sales districts and customer locations to build specific technical knowledge and gain sales experience while helping customers achieve their sustainability goals.- What's in it For You:- The opportunity to take on some of the world's most meaningful challenges, helping customers achieve clean water, safe food and healthy environments- The ability to make an impact and shape your career with a company that is passionate about growth- The support of an organization that believes it is vital to include and engage diverse people, perspectives and ideas to achieve our best- Applywhat you learn in the classroom to meaningful projects that havegenuine businessimpact- Finish your internship with a realistic job preview of what a "day in the life" of an Ecolab associate looks like- Be considered for a full-time job offer (to start upon graduation) at the end of a successful internship into an Associate District Representative role.

Sysco

Somerset, NJ

Our Summer Internship Program at Guest Worldwide, a Sysco company, is a 9-week paid program designed to enhance your education by providing real-world experience. Gain a variety of learning experiences through training, development, and mentorship while completing a meaningful project that supports and drives the business forward.

GTS

$1400 - $3000

New York, New York

Overview: The ETF trading group at GTS is looking for Summer 2027 interns to work on a variety of projects in the quantitative trading space, such as: building analytics tools to assist traders making real-time trading decisions, analyzing historical trade data to draw insights and inform our trading strategies, designing and testing quantitative models for new strategy development. With roots as a quantitative trading firm continually building for the future, the GTS family of companies are able to leverage the latest in artificial intelligence systems and sophisticated pricing models to bring consistency, efficiency, and transparency to today’s financial markets.

Legends Hospitality

$18 - $22

New York, NY

Legends fosters true partnerships with teams, stadiums, athletic directors, and owners, working collaboratively to enhance sales and partnership outcomes. We delve deep into understanding your values, market, and target audience, helping you solve problems and delivering the right game plan to propel your organization forward.