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32 javascript intern jobs at 21 companies in Clifton, NJ

1mo
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Javascript Engineer (IV-V)
New York, New York, United States
$140k-$220k/yr RemoteFull Time
Confiant
Confiant: Provides real-time cybersecurity and quality controls for digital advertising.
6+ YOEExpert-level JavaScript (ES6+) with deep browser internals; experience shipping JS SDKs; performance optimization; SDK distribution; security threat intel awareness.
Webpack, Rollup, esbuild, Babel, Jest, Playwright, Puppeteer
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1mo
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AI Intern
New York City or Miami or United States
HybridPart Time, Internship
Steel Partners
Steel Partners: A diversified holding providing industrial manufacturing and energy services.
Pursuing or recently completed Bachelor's/Master's in CS/Data Science/Engineering/Info Systems, hands-on AI/ML and LLM API experience, Python/JavaScript and REST API proficiency, strong analytical and communication skills.
AI/ML frameworks, LLM APIs, OpenAI, Anthropic, Google, Python, JavaScript, REST APIs, cloud services
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3w
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Software Engineering Intern — Fall 2026
New York City, New York, United States
$40/hr OnsiteInternship, Full Time
Junior
Junior: AI-powered research tools for private equity investors.
0+ YOEPursuing a Computer Science or related degree; comfortable with TypeScript/JavaScript and Next.js; curious about LLMs; strong communication skills; previous internship experience is a plus.
LLMs, Next.js, TypeScript, JavaScript, MacBook
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1w
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Digital Marketing Intern - Technical AI & Automation
New York City, New York, United States
$16-$18/hr HybridInternship
Eulerity
Eulerity: AI-driven marketing automation for franchise and multi-location brands.
Current student or recent graduate with quantitative coursework; strong Excel and Sheets skills; ability to read SQL/Python/JavaScript; detailed, self-directed, strong written communication; comfortable using AI tools.
SQL, Python, JavaScript, Microsoft Excel, Sheets, Google Ads, Meta, LinkedIn
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2mo
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Full Stack Software Engineer Intern - Winter 2027
San Francisco or New York City or Seattle
OnsiteInternship
Rippling
Rippling: Unified platform managing workforce HR, IT, and finance operations
Currently enrolled in a Bachelor’s or Master’s in CS or related field; prior internship/Co-op experience; backend experience with Python and frontend with JavaScript and HTML/CSS; strong communication and problem-solving skills.
Python, JavaScript, HTML/CSS, Slack, Microsoft 365
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1w
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IT & Data Systems Intern (Archibus & Applications Development)
New York, New York, United States
$18/hr OnsitePart Time
Research Foundation of CUNY
Research Foundation of CUNY: Administers fiscal and human resources for CUNY research grants.
Enrolled CUNY student available ≥14 hrs/week with Excel and SQL proficiency, familiarity with HTML/CSS/JavaScript, Archibus, data entry/analysis, and agile methods; Git, Microsoft SQL Server and .NET experience preferred.
Archibus, Microsoft Excel, Structured Query Language (SQL), Microsoft SQL Server, Git, HTML, CSS, JavaScript, .NET, C#, F#, VB.NET
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1mo
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Full Stack Engineer Intern
New York City, New York, United States
$80k-$180k/yr OnsiteInternship
Phia
Phia: Personalized AI shopping agent for product discovery and price comparison.
Pursuing CS or related field; experience with web apps; JS proficiency; APIs/databases; Git; strong communication.
JavaScript, Frontend framework, Backend framework, APIs, Databases, Git, Testing
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1mo
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AI Builder Intern
San Francisco or New York City or Seattle
$74k-$112k/yr OnsiteFull Time, Internship
Scale AI
Scale AI: Provides data and infrastructure for training artificial intelligence models.
Hands-on experience with LLM APIs and agentic/automation frameworks, production-quality Python or JavaScript coding, product instincts, and current enrollment in an undergraduate or graduate CS/data science/engineering program.
OpenAI, Anthropic, Python, JavaScript, LangChain, LangGraph, CrewAI, Slack, Salesforce, Notion, React, Cursor, Claude, Copilot, AutoGen, n8n, Zapier, GitHub
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3w
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Software Engineer, Intern
New York, New York, United States
$55k/hr OnsiteInternship
Breaking Ground
Breaking Ground: Provides supportive housing and social services to homeless populations.
High school diploma or equivalent; experience building and maintaining web applications; proficiency in C#, JavaScript, Python, SQL, SQL Server, ASP.NET MVC, Git, and Microsoft Azure; MS Office skills and strong communication.
C#, JavaScript, Python, SQL, SQL Server, ASP.NET MVC, Git, Microsoft Azure, Microsoft Word, Microsoft Excel, Microsoft Outlook, Microsoft Teams
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2mo
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Internal Tools Developer
New York City or Boston
$70k-$100k/yr OnsiteFull Time
Arch
Arch: Automates data and document management for private market investments.
Strong JavaScript and SQL skills; experience building internal tools; quick learner; interest in finance; good communication.
JavaScript, SQL, HTML, CSS, React
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3w
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Staff Web Engineer
Menlo Park or New York
$230k-$270k/yr HybridFull Time
Robinhood
RobinhoodNASDAQ: HOOD: Provides a commission-free platform for investing and financial services.
7+ YOE7+ years building web applications with strong expertise in JavaScript/TypeScript, browser internals, profiling and optimizing rendering and real-time UIs; experience with performance tooling and cross-functional collaboration.
JavaScript, TypeScript, Canvas, Web Workers, WebSockets, Chrome DevTools, Lighthouse, flame charts, Core Web Vitals
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1d
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Systems Analyst II
Seattle or New York City or Salt Lake City or San Francisco or São Paulo or Vancouver
$136k-$170k/yr HybridFull Time
Brex
Brex: Corporate cards and spend management software for businesses.
2+ YOE2–4 years in systems/BizOps/TechOps or related; proficiency with JavaScript, Python, SQL, APIs; experience with Salesforce and GTM tooling; ability to design, build, and ship internal tools and integrations.
Salesforce, Nooks, Outreach, Gong, Vitally, Sierra, Snowflake, JavaScript, Python, SQL, APIs
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2mo
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Full Stack Engineer (C#/React)
New York, New York, United States
$101k-$134k/yr OnsiteFull Time
Rockstar Games
Rockstar Games: Creates and publishes world-class open-world video games.
3+ YOE3+ years React (TypeScript/JavaScript); 3+ years C#; 2+ years T-SQL; 2+ years source control (Perforce preferred); knowledge of web development best practices and Agile; strong communication in international team.
C#, React, TypeScript, JavaScript, MSSQL, Perforce, T-SQL, Redis, MongoDB, Elasticsearch, npm, NuGet
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2w
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Developer Workplace Integrations
New York, New York, United States
$110k-$140k/yr HybridFull Time
Versant
VersantNasdaq: VSNT: Operates cable television networks and digital media entertainment platforms.
Experience building internal tools and API-first integrations; strong full‑stack skills with Node, TypeScript/JavaScript, client frameworks (Vue, React, Angular); CI/CD and cloud (AWS/Azure/GCP) experience; Agile and security awareness.
Node, TypeScript, JavaScript, Vue.js, React, Angular, Slack, GitHub Actions, Jenkins, AWS, Azure, GCP
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1mo
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Java Lead Software Engineer
Jersey City, New Jersey, United States
$152k-$215k/yr OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years software engineering experience; hands-on system design, application development, testing, operational stability; advanced Java/Spring, JavaScript/TypeScript, SQL, Kafka, cloud (AWS/internal); experienced with SDLC, CI/CD, resiliency and security; experience with AI-assisted development workflows preferred.
Java, Spring, JavaScript, TypeScript, SQL, Kafka, React, Oracle, Aurora, Airflow, Spark, AWS, CI/CD
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2mo
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GTM Engineer - Ecosystem
New York, New York, United States
$140k-$180k/yr HybridFull Time
Clay
Clay: Platform for automated lead enrichment and sales workflows.
6+ YOE6-10 years in RevOps/GTM engineering or related technical roles; 3+ years in RevOps/Sales Ops or GTM Engineering; experience integrating Salesforce and GTM systems; programming skills in Python, JavaScript, SQL, or TypeScript; experience deploying AI-powered internal tools; familiarity with data warehouses/BI tools; strong communication and ability...
Salesforce, Python, JavaScript, SQL, TypeScript, BI tools, AI tools
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2mo
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Software Developer / IT - Internal Tools
Long Island City, New York, United States
$66k-$70k/yr OnsiteFull Time
Gamer's Choice
Gamer's Choice: Retailer of collectible trading card games and tournament host.
1+ YOE1–3 years coding experience; proficient in JavaScript or Python; strong Windows/Chrome troubleshooting and WiFi; ability to read AI-generated code; Git and basic deployment; independent work in fast-paced environment.
JavaScript, Python, Git, Windows, WiFi, Google Chrome
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9h
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Research Analyst
New York City or Washington
$68k-$78k/yr HybridFull Time
Kharon
Kharon: A global risk analytics platform that provides sanctions, trade controls, and related intelligence to support compliance and risk decision-making.
1+ YOEBachelor's degree,1+ years experience with sanctions/export controls/AML/CFT,research in international security,SQL,Neo4J,web technologies and coding for data collection and QA.
SQL, Neo4J, HTML, JavaScript, CSS, XPath, JSON
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1w
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Director, Malware Analysis, Threat Intelligence
Washington or New York City or Pittsburgh or Austin
$200k-$240k/yr OnsiteFull Time
Kroll
Kroll: Provides global risk and financial advisory solutions.
5+ YOEBachelor's or equivalent,5+ years malware analysis/reverse engineering/IR/CTI experience,Windows internals expertise,static and dynamic analysis skills,technical writing and stakeholder collaboration.
IDA Pro, Ghidra, Rust, x64dbg, WinDbg, Binary Ninja, Cutter, Rizin, Python, PowerShell, C#, JavaScript, Go, MITRE ATT&CK, YARA, Sigma, STIX/TAXII, CrowdStrike Falcon, Microsoft Defender, SentinelOne, BlueVoyant MDR, Splunk, Microsoft Sentinel, Elastic, Mandiant Advantage, AWS, Azure, Google Cloud Platform, Active Directory, Entra ID, Microsoft 365
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2mo
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Content Critical Solutions - AI Engineer
Moonachie, New Jersey, United States
$60-$110/hr HybridMultiple Commitments Available
Content Critical Solutions
Content Critical Solutions: Provider of high-volume printing, mailing, and document fulfillment services.
AI-focused contractor or intern to evaluate workflows and build AI-enabled solutions; hands-on AI, automation, and document processing; collaborate with leadership and developers; deliver practical, secure, explainable AI implementations.
Python, JavaScript, MS SQL Server, AI/ML frameworks, APIs, Workflow automation tools
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