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77 software engineer intern jobs at 61 companies in Union, NJ

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Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
3mo
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Software Engineer Intern
New York City, New York, United States
HybridInternship
Latent Defense
Latent Defense: Building autonomous AI-driven threat modeling systems for cybersecurity.
0+ YOEInternship seeking engineers who think systemically; comfortable prototyping across the stack with TypeScript, Python, PostgreSQL; familiar with Docker/Kubernetes.
TypeScript, Python, PostgreSQL, Docker, Kubernetes
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2mo
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Software Engineer Intern - Backend Focused - Winter 2027
New York or San Francisco or Seattle
OnsiteInternship, Temporary
Rippling
Rippling: Unified platform managing workforce HR, IT, and finance operations
Current undergraduate/graduate student in CS or related field, previous software engineering internship experience with Python, backend programming skills, strong communication and critical thinking.
Python, Slack, Microsoft 365
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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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Staff Software Engineer
New York, New York, United States
$194k-$260k/yr HybridFull Time
Celonis
Celonis: Provides process mining software for business process optimization.
8+ YOEBS in CS (MS/PhD preferred),8+ years software engineering, strong C++ (17), experience with database internals/query engines and large-scale data systems, analytical and mentoring skills.
C++ (17), Starrocks, ClickHouse
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1w
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Software Engineer Team Lead
Austin or New York or San Francisco or Seattle
$269k-$335k/yr OnsiteFull Time
Fluidstack
Fluidstack: Provides high-performance cloud GPU infrastructure for AI development.
Lead a small engineering team while remaining hands-on in production code; hire and grow engineers; build internal tools and operational software; make rapid prioritization decisions.
Go, TypeScript, Python
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3mo
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Principal Software Engineer
New York City, New York, United States
$204k-$337k/yr OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
12+ YOELead software engineering with 12+ years of experience; cloud platforms (AWS, Azure); internal developer portal; Kubernetes; web services; strong communication.
Node.js, Java, C#, Kubernetes, AWS, Azure
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3w
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Software Engineer, Services Platform
San Francisco or New York
OnsiteFull Time
Cursor
Cursor: AI-powered code editor for professional software developers.
Experience building internal developer platforms, durable workflow orchestration (Temporal preferred), deployment tooling/CI-CD, service ownership, and strong software engineering fundamentals.
Temporal, CI/CD
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1mo
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Intern - Embedded Software Engineer (Fall 2026)
New York, New York, United States
$25-$30/hr OnsiteInternship
Persistent Systems
Persistent Systems: Develops and manufactures secure mobile ad hoc networking systems.
Working toward a Bachelor's in CS/CE, experience developing software in C/C++ for Linux, embedded systems experience, and must have or be able to obtain a U.S. security clearance.
C, C++, Linux, Linux kernel
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2mo
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Software Analyst / Developer, Emerging Talent Intern (Fall)
New York, New York, United States
$21/hr OnsiteInternship
Metropolitan Transportation Authority
Metropolitan Transportation Authority: Operates public transportation systems in the New York region.
Internship requiring software development basics, MS Office, analytical and communication skills, ability to work onsite, GPA 2.8, pursuing computer/engineering field.
Microsoft Office
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1w
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DESIGN ENGINEER INTERN
Queens, New York, United States
$60k-$72k/yr OnsiteFull Time
City of New York
City of New York: Provides municipal services and administration for New York City.
Baccalaureate in civil engineering required; must have Civil Service status or have taken DCAS Exam No.6116. Preferred: AutoCAD/Revit, FEA software, Microsoft Office; strong writing and communication skills.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, AutoCAD, Revit, STAAD Pro, RAM Elements, SAFE, BIM/CADD, Finite Element Analysis (FEA)
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1w
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Senior Software Engineer - Frontend Developer Experience
San Francisco or New York City or Portland or Canada or United States
$201k-$251k/yr HybridFull Time
Mercury
Mercury: Banking services and financial software designed for startup companies.
6+ YOE6+ years frontend software experience with deep React and TypeScript knowledge; experience leading cross-team engineering projects and maintaining internal libraries; strong communication and observability skills.
React, TypeScript, Vite, CI/CD
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1w
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Summer Intern 2027 - Software Developer
New York City, New York, United States
$300k/yr OnsiteInternship
Five Rings
Five Rings: Proprietary trading firm developing quantitative strategies for global markets.
Internship requiring Python proficiency (required), C or C++ and Linux preferred; strong communication and analytical skills; summer program participation.
C, C++, Linux, Python
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2w
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Senior Software Engineer - AI Tooling
San Francisco or New York City
$191k-$263k/yr HybridFull Time
Plaid
Plaid: Provides financial data connectivity and payment infrastructure via APIs.
5+ YOE5+ years professional software engineering experience; proven production systems experience; internal tools/platform building; strong product judgment; hands-on experience with AI development tools or agents.
Retool, Scaffold
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2w
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Principal Software Engineer - Environments Engineering
Palo Alto or New York City or Jersey City
$204k-$285k/yr OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
15+ YOE15+ years software engineering experience building internal developer platforms or environment-as-a-service; expertise in Kubernetes/EKS, service mesh traffic isolation, infrastructure-as-code, hybrid infrastructure, and platform adoption at scale.
Istio, Linkerd, Kubernetes, EKS, Go, Rust, Java, Terraform, Ansible, Oracle, Kafka, Cassandra, MongoDB, CockroachDB, DynamoDB, PostgreSQL, Jenkins, Spinnaker, GitHub Actions, Argo CD, Backstage
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2mo
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Software Engineering Intern (Fall 2026)
New York, New York, United States
$50/hr HybridInternship
Gemini
GeminiNasdaq: GEMI: Regulated platform for trading and storing digital assets.
Pursuing CS/CE or related degree; interest in blockchain/Web3; strong software fundamentals; proactive; good communication; open to feedback.
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3mo
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Developer Intern
Hauppauge, New York, United States
$20/hr OnsiteMultiple Commitments Available
Custom Computer Specialists
Custom Computer Specialists: Provides managed IT and cybersecurity services for organizations.
Pursuing or recently completed degree in CS/SE/IS; strong Java; SQL knowledge; detail-oriented; good communication; on-site 20 hrs/week; 10–12 weeks; starting May 2026; SSRS and MS SQL Server preferred.
Java, SQL, SSRS, MS SQL Server, REST APIs
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2w
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Member of Technical Staff (Software Engineer, Agentic Enterprise)
San Francisco or Seattle or New York City
$220k-$405k/yr OnsiteFull Time
Perplexity
Perplexity: AI-powered search engine providing conversational answers with citations.
4+ YOE4+ years software engineering experience, daily use of AI models/tools, proficiency with Python and familiarity with TypeScript and Go, experience building platforms for enterprise/internal users.
Python, TypeScript, Go, MCP
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1d
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Software Engineering Intern (Summer 2027)
New York City, New York, United States
$4k-$6k/wk OnsiteFull Time
Quadrillion Labs
Quadrillion Labs: Building an agentic research intelligence platform for computational analysis.
Current undergraduate at a US or Canadian university; strong engineering skills in Python or React; full-stack or backend experience; ability to move quickly in zero-to-one environments.
Python, React
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1mo
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Staff Software Engineer, Internal Tools
New York City or San Francisco or Los Angeles
$227k-$325k/yr HybridFull Time
Tubi
TubiNASDAQ: FOXA: Free ad-supported streaming service for movies and television.
8+ YOE8+ years software engineering experience; deep distributed systems expertise; strong full‑stack skills with Node.js/TypeScript, React/TypeScript, PostgreSQL/Drizzle ORM, and Python; experience integrating LLMs/AI into production systems.
Node.js, TypeScript, Express, React, PostgreSQL, Drizzle ORM, Python, OpenAI, Google Gemini, Claude Code, Codex, Cursor, MCP, LLM
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1mo
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Software Engineer, Staff
New York City or San Francisco or Seattle or Los Angeles or United States
$214k-$248k/yr RemoteFull Time
Check
Check: Provides embedded payroll infrastructure for software platforms.
Staff-level ownership of production systems, experience building internal tools or platforms, strong debugging and design skills, ability to collaborate cross-functionally, and willingness to work with Python/Django, React, TypeScript, AWS, Terraform, Postgres, Temporal, and GitHub.
Python, Django, React, TypeScript, AWS, Terraform, Postgres, Temporal, GitHub
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