Data Engineering Internship (Summer 2027)

Castleton Commodities International; Greater London; On-site; GBP 22,320 - 29,016; Part time

Job summary

Castleton Commodities International is seeking motivated Data Engineering Interns for its London office. You will build and optimize data pipelines powering analytics, forecasting, and investment decisions.

The role involves ingesting diverse datasets, implementing ETL to Snowflake, and collaborating with Data Science and Commercial teams to improve data reliability and efficiency.

Qualifications

• Pursuing a Bachelor’s or higher degree in a technical field with expected graduation Winter 2027 or Spring/Summer 2028.
• Strong programming experience in Python and SQL.
• Familiar with cloud platforms and large-scale data handling.

Responsibilities

• Develop and maintain data ingestion pipelines from APIs, FTP, and cloud sources.
• Design ETL processes to clean and store data in Snowflake.
• Collaborate with Data Science and Commercial teams to support analytics and forecasting.
• Automate workflows using Python, SQL, and orchestration tools.

Skills

Python

SQL

Web scraping

Cloud platforms (AWS/Azure)

Data pipelines

Education

Bachelor’s or higher in Computer Science / Engineering / MIS

Tools

Snowflake

SQLAlchemy

Pandas

NumPy

Job description

Application Deadline: September 1st, 11:59m 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 Data Science platform, as staying at the forefront of data management and analytics is essential to our investment strategy. We are looking for motivated and detail-oriented Data Engineering Interns to join our Global Data Science & Technology team in our London office. The Data Engineering Intern will work closely with our Data Science, Data Engineering and Commercial teams to build and optimize data pipelines that power our analytics, forecasting, and investment decision-making processes. This is a hands-on technical internship ideal for someone who enjoys solving real-world data challenges, especially around ingesting, scraping, and managing large datasets across the commodity markets.

Responsibilities:

• Develop and maintain robust data ingestion pipelines from various internal and external sources, including APIs, FTP endpoints, and cloud data providers.
• Develop data ingestion and transformation pipelines using Python and SQL, publishing Snowflake for downstream use in analytics and forecasting tools.
• Work on data architecture and data management projects for both new and existing data sources.
• Design and implement ETL processes to clean, normalize, and store structured and semi-structured data in Snowflake, our core relational data warehouse.
• Analyze data pipeline performance and implement optimizations to improve efficiency and reliability.
• Conduct data quality checks and build validation logic to identify anomalies and ensure data integrity for use by commercial trading and analytics teams.
• Automate data workflows using Python, SQL, and orchestration tools (e.g., Airflow or similar).
• Assist in transitioning legacy datasets and codebases into scalable, cloud-native workflows aligned with our modern data architecture.
• Document data sources, pipeline logic, and data models to ensure maintainability and knowledge transfer.

Qualifications:

• Currently pursuing a Bachelor’s or higher degree in Computer Science, Engineering, Management Information Systems, or related technical field.
• Expected graduation date of Winter 2027 or Spring/Summer 2028.
• Strong programming experience in Python (preferred libraries: pandas, NumPy, SQL alchemy, etc.).
• Strong understanding of SQL and experience querying relational databases (Snowflake a plus).
• Exposure to or interest in cloud platforms (e.g., AWS, Azure), particularly with cloud data storage and compute.
• Familiarity with web scraping frameworks and handling large-scale structured and unstructured data sources.