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99 software internship jobs at 79 companies in Fairfield, CT

1w
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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
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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.
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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).
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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
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Full-Stack Software Engineer Internship (Summer 2027)
Stamford or Houston
OnsiteInternship, Full Time
Castleton Commodities International
Castleton Commodities International: Invests in and manages global energy and commodity assets.
Currently pursuing a BS/MS in CS/Engineering/MIS or related, strong Python skills (Pandas, NumPy), familiarity with Git, cloud (AWS), Kubernetes, Kafka, Snowflake, DevOps tools and data visualization (Streamlit).
Python, Pandas, NumPy, AWS, Snowflake, Kubernetes, Kafka, Git, Docker, Helm, CI/CD, Streamlit
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Software Engineering Internship (C++ or Python) – Summer 2027
Austin or Chicago or New York City or Singapore or London
$6k/wk OnsiteInternship
Hudson River Trading
Hudson River Trading: A quantitative firm using technology to trade global financial markets.
Full-time undergraduate student graduating 2028, programming experience in Python/C/C++, strong problem solving and communication skills, eligible for full-time roles in 2028.
Python, C, C++
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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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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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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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4w
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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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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
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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
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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
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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
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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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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
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3mo
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Lead Software Engineer-Java/Cloud
New York, New York, United States
$152k-$215k/yr OnsiteMultiple Commitments Available
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
8+ YOE8+ years software engineering experience; cloud technologies; Java/Spring; Kubernetes; SQL/NoSQL databases; SDLC; CI/CD; agile practices.
Java, Spring, Kubernetes, Splunk, Dynatrace, Postman, SQL, NoSQL, CI/CD, Cloud Technologies, AI tools
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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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1mo
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Student Services Advisor and Internship Coordinator
New York, New York, United States
$70k-$77k/yr HybridFull Time
New York University
New York University: A large private university providing educational programs and student support services.
3+ YOEBachelor's required (Master's preferred), 3+ years advising or counseling experience, CMS experience preferred, strong communication and event-planning skills, knowledge of office software.
Content Management System
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