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Javascript Developer Internship Jobs in Princeton, NJ

Celerant Tech

Software Developer Intern

Iselin, NJ · On-site

$19.50 - $25.75/hr

Interns often work under the guidance of senior developers or mentors to learn and contribute to ... JavaScript. · Basic knowledge of version control systems like Git. · Awareness of frameworks ...

Synaptrix Labs

Internship Program

New York, NY · On-site

$18.25 - $23.75/hr

Software Engineering, Hardware Engineering, Machine Learning Research, Industrial Design, and UI/UX ... Software: Python, C++, or JavaScript * Machine Learning: PyTorch, TensorFlow, or JAX * Hardware:

Synaptrix Labs

Internship Program

New York, NY

$18.25 - $23.75/hr

Software Engineering, Hardware Engineering, Machine Learning Research, Industrial Design, and UI/UX ... Software: Python, C++, or JavaScript * Machine Learning: PyTorch, TensorFlow, or JAX * Hardware:

Synaptrix Labs

Internship Program

New York, NY

$18.25 - $23.75/hr

Software Engineering, Hardware Engineering, Machine Learning Research, Industrial Design, and UI/UX ... Software: Python, C++, or JavaScript * Machine Learning: PyTorch, TensorFlow, or JAX * Hardware:

Uncountable

Full-Stack Intern

New York, NY · On-site

$6.0K/mo

Thank you for your interest in Uncountable Engineering! Description Uncountable is hiring interns ... Familiarity with modern javascript best practices * Familiarity with SQL database design

Vantage

PHP/React Developer, Team Lead

New Hope, PA

Solid understanding of standard front-end technologies like CSS, HTML, JavaScript, REST, JSON.  ... interns, and junior developers). * Relaxed yet enthusiastic and motivated attitude towards the ...

Capital One

Lead Software Engineer

New York, NY

Utilize programming languages like JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, and Go ... At least 4 years of experience in software engineering (Internship experience does not apply) * At ...

Capital One

Lead Software Engineer

New York, NY · On-site

Utilize programming languages like JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, and Go ... At least 4 years of experience in software engineering (Internship experience does not apply) * At ...

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All JobsJavascript Developer JobsJavascript Developer Internship JobsJavascript Developer Internship Jobs in Princeton, NJ

Javascript Developer Internship information

See Princeton, NJ salary details

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How much do javascript developer internship jobs pay per hour?

As of Aug 5, 2026, the average hourly pay for javascript developer internship in Princeton, NJ is $24.00, according to ZipRecruiter salary data. Most workers in this role earn between $19.42 and $25.43 per hour, depending on experience, location, and employer.

What does a Javascript developer intern do?

A Javascript Developer Intern assists in designing, developing, and testing web applications using JavaScript and related technologies. Their responsibilities often include writing code, fixing bugs, learning modern frameworks like React or Node.js, and collaborating with senior developers on various projects. Interns gain hands-on experience, improve their programming skills, and learn how to work in a professional software development environment. This role is ideal for students or recent graduates looking to start a career in web development.

What types of projects and tasks can I expect to work on during a Javascript developer internship?

As a Javascript Developer Intern, you'll typically be involved in a variety of tasks ranging from building interactive web components and debugging code to collaborating on front-end features with senior developers. Interns often participate in code reviews, write unit tests, and contribute to both new and ongoing projects using modern frameworks like React, Vue, or Angular. You'll also have opportunities to learn best practices in version control (such as Git) and agile development methodologies. This hands-on experience will help you develop both technical and teamwork skills essential for a career in web development.

What are the key skills and qualifications needed to thrive as a Javascript developer intern, and why are they important?

To thrive as a Javascript Developer Intern, you need a solid understanding of JavaScript fundamentals, HTML, CSS, and basic programming concepts, typically demonstrated through coursework, personal projects, or a relevant degree in computer science or a related field. Familiarity with development tools such as Git, code editors (VS Code), and frameworks like React or Node.js is often expected. Strong problem-solving abilities, eagerness to learn, and effective communication make an intern stand out. These skills and qualities are crucial for adapting to real-world development environments, collaborating with teams, and contributing valuable work during the internship.

What is the difference between Javascript Developer Internship vs Javascript Developer?

AspectJavascript Developer InternshipJavascript Developer
Required CredentialsTypically students or recent graduates, some coding knowledgeProfessional experience, often a degree in Computer Science or related field
Work EnvironmentInternship programs, entry-level projects, mentorshipFull-time employment, team-based projects, ongoing responsibilities
Employer & Industry UsageTech companies, startups, internships for skill developmentTech firms, software companies, industry standard role
Search & Comparison IntentLearning, entry-level opportunities, internshipsCareer advancement, full-time roles, skill application

The main difference between a Javascript Developer Internship and a Javascript Developer is the experience level and employment status. Internships are designed for students or recent graduates seeking hands-on experience, often with mentorship, while Javascript Developers are full-time professionals responsible for developing and maintaining software projects. Internships serve as a stepping stone into the industry, whereas full-time roles require more experience and responsibility.

What are popular job titles related to Javascript Developer Internship jobs in Princeton, NJ? For Javascript Developer Internship jobs in Princeton, NJ, the most frequently searched job titles are:
What job categories do people searching Javascript Developer Internship jobs in Princeton, NJ look for? The top searched job categories for Javascript Developer Internship jobs in Princeton, NJ are:
What cities near Princeton, NJ are hiring for Javascript Developer Internship jobs? Cities near Princeton, NJ with the most Javascript Developer Internship job openings:
Javascript Developer Internship jobs near you

2027 Internship - Frontend Engineer (UI)

Virtu Financial

New York, NY • On-site

$5.0K - $5.8K/wk

Full-time, Internship

Posted 6 days ago

Job description

Virtu is an industry-leading financial technology firm that operates both proprietary trading and client-facing businesses in the global financial marketplace. Our cutting edge, proprietary technology is core to everything we do. We trade in over 35 countries, across 235 financial exchanges and over 25% of retail order flow in the US. is serviced by Virtu.
Our team is a dedicated group of traders, quants and developers that are inspired by the unique and exciting challenges we solve every day. Our culture combines the creativity of a fast paced start up, with the stability of a disciplined financial services firm. We are a flat organization and encourage our people to innovate and lean on their teammates for support and collaboration. We have fun, work hard and strive to be virtuous in all we do.
FRONTEND DEVELOPER INTERNSHIP
Virtu's internship program offers students an extraordinary opportunity to learn about the firm and the world's financial markets. We have built a thoughtful and challenging curriculum that introduces students to all aspects of Virtu's business through a company-curated global training week, real world development projects to complete, and engaging social events to get to know our team and culture.
  • Location: New York
  • Dates: 10 week program, starting June 7th, 2027 - August 13th, 2027 (with flexibility if needed)
  • Training: Ongoing training throughout the summer and a training week held in New York
  • Projects: Real problems to solve throughout the program. Interns will work from a list of projects and have several senior mentors throughout the summer program.
  • Perks: Onsite Barista, weekly happy hours, social events, daily lunch, stocked pantry

Our User Interface (UI) development team is a highly talented group of versatile software engineers who are collaborating with traders and developers to gather requirements, understand needs, and implement real-time trading, visualization, analysis and reporting tools. Ideal candidates will have a passion and talent for designing great, intuitive user interfaces as well as expansive experience around web technologies and Javascript frameworks.
As an intern, you will complete a variety of challenging development projects. You'll work alongside our senior team to improve scalability, performance and efficiency of our cutting edge trading systems. This is a rare opportunity for students to learn first hand how to design and architect trading tools for scale and performance, and to support the massive amounts of data that flow through Virtu's trading systems daily.
REQUIREMENTS
  • Rising juniors, or students expected to be ready for full time employment between December 2027 - June 2028.
  • Excellent academic background in Computer Science, Electrical Engineering or related field
  • Strong programming skills in JavaScript, React, and Node
  • Experience with TypeScript, Java, C++, Python is a plus
  • Being comfortable with a wide variety of projects (frontend/backend, different programming languages)
  • A physicalizer; a person who identifies issues and creates solutions without rigid direction or fanfare
  • Highly motivated and tenacious individual, with a proven ability to take initiative and work independently and within a team
  • Team player: authentic, genuine person who is capable of working collective goals.

THE PROCESS
After applicants pass an initial resume screening, an online programming test will be emailed to you via HackerRank. Upon review, we will reach out to arrange next steps. We are looking forward to meeting you!
Salary Range: $5,000 - $5,800 weekly (salary range is exclusive of sign on bonuses, housing, meals, benefits or any other forms of compensation)
Virtu Financial is an equal opportunity employer, committed to a diverse and inclusive workplace, welcoming you for who you are and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

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