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Trainee Software Engineer Internship Jobs in Fairfield, CT

Citadel

Software Engineer - Intern (US)

Greenwich, CT · On-site

$4.5K - $5.8K/wk

In addition to weekly pay, interns may be eligible for a highly competitive sign-on bonus, housing ... engineers in the world. Our colleagues are empowered to test their ideas and develop commercial ...

Festo SE & Co. KG

AI Engineer Intern

Islandia, NY · On-site

This internship provides hands-on experience in applying artificial intelligence technologies within real-world business applications while collaborating with software engineers, and business ...

Medtronic

Engineering Intern - Summer 2027

North Haven, CT

$16.75 - $21.75/hr

A Day in the Life Our summer internships are full-time (40 hours/week), paid positions lasting 10 ... Experience with engineering software, programming, CAD, data analysis, or laboratory equipment.

Medtronic

Engineering Intern - Summer 2027

North Haven, CT

$16.75 - $21.75/hr

A Day in the Life Our summer internships are full-time (40 hours/week), paid positions lasting 10 ... Experience with engineering software, programming, CAD, data analysis, or laboratory equipment.

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Trainee Software Engineer Internship information

See Fairfield, CT salary details

$13

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$39

How much do trainee software engineer internship jobs pay per hour?

As of Aug 21, 2026, the average hourly pay for trainee software engineer internship in Fairfield, CT is $25.92, according to ZipRecruiter salary data. Most workers in this role earn between $21.06 and $29.42 per hour, depending on experience, location, and employer.

What is the difference between Trainee Software Engineer Internship vs Junior Software Developer?

AspectTrainee Software Engineer InternshipJunior Software Developer
Required CredentialsTypically pursuing or recently completed a degree in Computer Science or related fieldCompleted degree or equivalent experience in software development
Work EnvironmentInternship programs, often in training or mentorship settingsFull-time employment in a development team
Employer & Industry UsageCommon in tech companies, startups, and educational programsStandard entry-level role in software companies
Search & Comparison IntentUnderstanding entry-level opportunities and training rolesSeeking full-time junior developer positions

The main difference is that a Trainee Software Engineer Internship is a temporary training position aimed at gaining practical experience, often for students or recent graduates. In contrast, a Junior Software Developer is a full-time role requiring some proven skills and ready to contribute to projects independently.

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Trainee Software Engineer Internship jobs near you

Full-Stack Software Engineer Internship (Summer 2027)

Castleton Commodities International, LLC

Stamford, CT • On-site

$34.44/hr

Other

Re-posted 13 hours ago

Job description

Application Deadline

September 1st at 11:59 pm EST

Program Summary

Data Science & Technology Internship

Company Overview

Castleton Commodities International is a leading global energy commodities merchant and infrastructure asset investor. As a trader, CCI deploys capital on a proprietary basis in the physical and financial commodity markets, providing the Company with market insights and access. As a strategic investor and developer, CCI leverages its market expertise, operations capabilities, and industry knowledge to invest in, and develop, select commodity infrastructure assets. Our strategically integrated platform has generated strong risk‑adjusted returns for our investors since our formation.

Position Overview

CCI is developing a leading‑edge analytics platform. We are looking for motivated and detail‑oriented Front Office Software Engineering Interns to join our Global Data Science & Technology team in our Stamford, CT office. This internship is ideal for technically skilled students with a strong interest in building quality software that directly impacts trading, analytics, and investment workflows. You'll collaborate closely with other Software Engineer's, Data Scientist's, and Commercial end users, contributing to our front office platform through hands‑on development projects using Python, cloud technologies (AWS), APIs, and Snowflake.

Responsibilities
  • Contribute to the development of front office software tools that support real‑time trading, market data analytics, and visualization.
  • Work with the commercial trading team to optimize and re‑engineer pricing models, decision tools, and trading workflows.
  • Build and enhance Python‑based microservices and APIs for internal data access and operations automation.
  • Assist in building data visualization dashboards using libraries such as Streamlit, integrating commercial KPIs, price curves, and supply/demand analytics.
  • Participate in cloud‑native application development using AWS services, including Kubernetes and Kafka.
  • Support automation of deployment processes using modern DevOps tools (e.g., Git, Docker, Helm, CI/CD pipelines).
  • Collaborate with the Data Science team to help integrate ML‑driven analytics into front office workflows.
Qualifications
  • Currently pursuing a Bachelor’s or Master’s degree in Computer Science, Engineering, Management Information Systems, or related technical field of study.
  • Expected graduation date of Winter 2027 or Spring/Summer 2028.
  • Strong programming experience in Python (preferred libraries: Pandas, NumPy, etc.).
  • Familiarity with version control tools (e.g., Git) and software development best practices.
  • Strong problem‑solving abilities and an eagerness to learn about financial markets and trading systems.
  • Excellent communication skills and ability to work in a fast‑paced, collaborative environment.
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