84 software developer internship jobs at 54 companies in Princeton, NJ

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Internship - Software Engineer
Austin or New York City
$5k-$6k/wk OnsiteInternship
Virtu Financial
Virtu FinancialNYSE: VIRT: Provides liquidity and trading technology to global financial markets.
Rising juniors or soon-to-be graduates in CS/EE with strong programming in Python plus Java or C++, quantitative skills, and ability to complete a HackerRank coding test.
Python, Java, C++, JavaScript, HackerRank
1mo
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Junior Software Engineer
Bridgewater, New Jersey, United States
$64k-$83k/yr HybridFull Time
MetLife
MetLifeNYSE: MET: Global provider of insurance, annuities, and financial services.
Bachelor's in CS/IS/Engineering required; internship or project experience in software development or AI/ML; proficiency in at least one language (Java, Python, C#, JavaScript/TypeScript, COBOL); understanding of software design, databases, secure coding, and automated testing.
Java, Python, C#, JavaScript, TypeScript, COBOL, GitHub CoPilot, Azure DevOps, Docker, Kubernetes, Azure OpenAI, LangChain, Hugging Face, TensorFlow, Semantic Kernel
2mo
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Software Developer | C++ | Prediction Markets | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteMultiple Commitments Available
Susquehanna International Group
Susquehanna International Group: Global quantitative trading and market making firm.
Proficient in C++ with software development experience in finance or prediction markets.
C++, Software Development
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
2mo
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Software Engineer, AI Automation (Copy)
Brooklyn, New York, United States
$110k-$160k/yr HybridFull Time
Paces
Paces: Software to accelerate renewable energy and power project development.
Internship experiences building data-intensive software; deploying AI agents in production; proficient in Python and SQL; strong problem solving; comfortable with ambiguity.
Python, SQL, Agent SDK, Messages API, LangGraph, ETL, Database, Cloud
2w
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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
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
2mo
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2026 Undergraduate - Leap: Software Engineer, Jersey City, NJ
Jersey City, New Jersey, United States
$71k-$134k/yr OnsiteFull Time
Fidelity Investments
Fidelity Investments: Provides investment management, retirement planning, and brokerage services.
Pursuing or recently completed degree in Computer Science or Software Engineering; strong programming fundamentals and problem-solving; internship/project experience preferred.
APIs, Databases, Programming Languages, Messaging Systems, Frontend Frameworks
2mo
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Software Engineer in Test
United States or Philadelphia
HybridFull Time
Bainbridge Health
Bainbridge Health: Provides medication safety and pharmacy data analytics software for hospitals.
Bachelor's degree in a relevant field; knowledge of JavaScript, Python, and SQL; detail-oriented; quick learner; strong communication; exposure to Golang, Git, CI/CD; internship or project experience in software quality.
JavaScript, Python, SQL, Golang, Git, CI/CD
1mo
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Software Engineer
Plano or Dallas or New York City
HybridInternship
Wiliot
Wiliot: IoT platform providing battery-free sensor tags and cloud intelligence.
3+ YOE3–6 years backend or full‑stack experience; strong Python; cloud platform experience (AWS, Azure, or GCP); Apache Spark; REST APIs, microservices, and databases; CI/CD and testing experience.
Python, AWS, Azure, GCP, Apache Spark, PostgreSQL, MongoDB, DynamoDB, Docker, Kubernetes, Databricks
3w
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Software Engineer
New York, New York, United States
$300k/yr OnsiteInternship
Jane Street
Jane Street: Global quantitative trading firm and liquidity provider.
Top-notch programmer, intellectually curious and collaborative; will learn OCaml (primary) and may use Python; paired with mentors on production projects.
OCaml, Python
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
2mo
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Software Engineer II, Developer Experience
Livingston or New York or Bellevue or San Francisco or Sunnyvale
$109k-$204k/yr HybridAll Commitments Available
CoreWeave
CoreWeaveNASDAQ: CRWV: Cloud platform providing GPU-accelerated infrastructure for AI workloads.
2+ YOE2+ years of software engineering; Go or Python; cloud-native services; Kubernetes basics; CI/CD; interest in AI-powered tooling.
Go, Python, Kubernetes, CI/CD, Cloud
3mo
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Quantitative Strategy Developer Internship: Summer 2027
Bala Cynwyd, Pennsylvania, United States
OnsiteInternship, Full Time
Susquehanna International Group
Susquehanna International Group: Global quantitative trading firm specializing in proprietary financial markets.
Enrolled in CS/CE/Math or related STEM; bachelor's or master's; start full-time by Aug 2028; strong Python and a compiled language; experience with Pandas/Polars/NumPy; visa sponsorship available.
Python, C++, Pandas, NumPy, Polars
1mo
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Co-Op, Software Engineer - Action Runtime
San Francisco or New York City or Seattle or Little Rock
$31-$49/hr OnsiteFull Time, Internship
LiveRamp
LiveRampNew York Stock Exchange: RAMP: Provides a platform for secure data collaboration and identity.
Pursuing or completed a CS/STEM degree, strong coding skills, readiness to commit production code, willingness to learn; internships 12–24 weeks with mentor and orientation training. Bonus: Java, big data, cloud, Kubernetes, React, TypeScript.
Java, Core Java, Hadoop, Spark, SingleStore, GCP, AWS, Azure, Kubernetes, Cadence, Scala, React, Ruby on Rails, Node.js, TypeScript, Express.js
1w
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2027 North America Software Engineering Internship
Bellevue or Boulder or Denver or Irvine or New York or Seattle
$46-$62/yr HybridInternship
The Trade Desk
The Trade DeskNASDAQ: TTD: Cloud-based programmatic advertising platform for data-driven media buying.
Enrolled in a Bachelor's or Master's program, expected to graduate 2027–2028; fluent in one or more object-oriented languages; strong data structures and algorithms; available to work 3 days in office (Tue–Thu).
1w
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Software Developer Intern- Drexel Co-op US
Philadelphia, Pennsylvania, United States
$53k-$88k/yr HybridInternship, Full Time
AVEVA
AVEVA: Industrial software for engineering and operational performance management.
Currently enrolled in a BS/MS/PhD in CS or related, GPA≥3.0, software development experience in modern languages, U.S. work authorization required, drug screen and background check required.
C++, C#, HTML, JavaScript, Agile
4w
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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
2mo
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Senior Software Engineer, Advance
New York City, New York, United States
$166k-$250k/yr HybridMultiple Commitments Available
Alloy
Alloy: Identity and fraud decisioning platform for financial institutions.
5+ YOE5+ years in production software; front-end and back-end capabilities; TypeScript/JavaScript (React), Node.js; Python (Django); PostgreSQL; OpenSearch; AWS; leadership experience.
TypeScript, JavaScript, Node.js, PostgreSQL, OpenSearch, AWS, Python, Django
3mo
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2026 T. Rowe Price Labs Internship Program – New York
New York, New York, United States
HybridMultiple Commitments Available
T. Rowe Price
T. Rowe PriceNASDAQ: TROW: Global investment management firm providing funds and retirement services.
Full-time student with expected graduation May/June 2027–May/June 2029; minimum GPA 3.0; internship in software engineering or data science; hybrid work up to 3 days from home.