Castleton Commodities International

About the Company

Castleton Commodities International is at the cutting edge of energy trading and infrastructure asset investing backed by the best minds in the industry and powered by deep fundamental research and advanced analytics. We recognize the importance of providing sustainable and reliable energy.

To explore available opportunities, please visit the CCI website at www.cci.com.

Listed Jobs

Company Name

Castleton Commodities International

Job Title

Data Engineering Internship (Summer 2026)

Job Description

**Job Title**: Data Engineering Internship (Summer 2026) **Role Summary** Intern to design, build, and maintain data pipelines that ingest, transform, and store commodity market data in Snowflake for analytics and forecasting. Work closely with Data Science, Data Engineering, and Commercial teams to ensure data quality, performance, and reliability. **Expectations** - Deliver functional, scalable ETL workflows in a cloud‑native environment. - Collaborate across engineering and business teams to understand data needs and translate them into technical solutions. - Mentor junior data engineers and document pipeline logic for maintainability. **Key Responsibilities** - Develop ingestion pipelines from APIs, FTP, and cloud providers. - Design and implement ETL processes using Python (pandas, NumPy, SQLAlchemy) and SQL. - Store and manage structured/semi‑structured data in Snowflake. - Optimize pipeline performance and implement reliability safeguards. - Conduct data quality checks, create validation logic, and monitor anomalies. - Automate workflows with orchestration tools such as Airflow. - Assist in migrating legacy datasets to scalable cloud workflows. - Document data sources, pipeline architecture, and data models. **Required Skills** - Strong Python programming with data libraries (pandas, NumPy, SQLAlchemy). - Proficiency in SQL; experience with relational databases; Snowflake a plus. - Knowledge of cloud platforms (AWS, Azure) and cloud data storage/compute. - Familiarity with web‑scraping frameworks and handling large‑scale structured/unstructured data. - Understanding of ETL concepts, data modeling, and data quality practices. **Required Education & Certifications** - Currently pursuing a Bachelor’s or higher degree in Computer Science, Engineering, Information Systems, or related field. - Expected graduation Winter 2026 or Spring/Summer 2027. - No specific certifications required.

Stamford, United states

On site

15-09-2025

Company Name

Castleton Commodities International

Job Title

Front Office Software Engineer Internship (Summer 2026)

Job Description

**Job Title:** Front Office Software Engineer Intern (Summer 2026) **Role Summary:** A technical internship within the Global Data Science & Technology team, focusing on building and enhancing front‑office software tools that support real‑time trading, market data analytics, and investment workflows. The role involves hands‑on development using Python, cloud services (AWS), APIs, and data visualization libraries. **Expectations:** - Deliver functional code and prototypes that meet trading and analytics needs. - Collaborate effectively with software engineers, data scientists, and commercial users. - Demonstrate strong problem‑solving, communication, and a willingness to learn financial‑market concepts. **Key Responsibilities:** - Develop and maintain Python‑based microservices and APIs for internal data access and automation. - Build and enhance data‑visualization dashboards (e.g., Streamlit) integrating KPIs, price curves, and supply/demand analytics. - Participate in cloud‑native development using AWS services, including Kubernetes and Kafka. - Support CI/CD pipelines, containerization (Docker, Helm), and other DevOps processes. - Work with trading teams to re‑engineer pricing models and decision‑support tools. - Assist the Data Science team in integrating machine‑learning analytics into front‑office workflows. **Required Skills:** - Proficient in Python (experience with Pandas, NumPy, etc.). - Familiarity with Git version control and standard software development practices. - Basic understanding of cloud platforms (AWS) and container orchestration. - Strong analytical and problem‑solving abilities. - Effective written and verbal communication; ability to work in a fast‑paced, collaborative environment. **Required Education & Certifications:** - Currently enrolled in a Bachelor’s or Master’s program in Computer Science, Engineering, Management Information Systems, or a related technical field. - Anticipated graduation: Winter 2026 or Spring/Summer 2027. - No specific certifications required.

Stamford, United states

On site

15-09-2025

Company Name

Castleton Commodities International

Job Title

Associate, Front Office Software Engineer

Job Description

**Job Title** Associate, Front Office Software Engineer **Role Summary** Build cloud‑native Python services and APIs that drive real‑time analytics and systematic trading strategies for Front Office teams. Collaborate with traders and analysts to translate commercial requirements into scalable, high‑performance solutions that directly impact market insights and risk management. **Expectations** • 0–2 years of professional software engineering experience (new graduates welcomed) • Strong foundation in computer science fundamentals (data structures, algorithms, software design) • Excellent problem‑solving, analytical, and communication skills for cross‑functional collaboration **Key Responsibilities** - Partner with traders and analysts to engineer and streamline trading processes, analytical models, and systematic strategies. - Design, develop, test, and maintain scalable, high‑performance Python services and APIs for the analytics platform. - Implement cloud‑native tools: real‑time analytics, visualization interfaces, and workflow automation that integrate into the Front Office platform. - Support supply‑and‑demand modeling, market data analysis, and strategy research. - Ensure code quality through unit tests, code reviews, and adherence to DevOps practices. **Required Skills** - Proficiency in Python (backend development, services, APIs, data processing). - Solid understanding of data structures, algorithms, and software design principles. - Experience in Linux/Unix development environments. - Familiarity with AWS cloud services and data warehousing (e.g., Snowflake) is a plus. - Knowledge of DevOps practices and CI/CD pipelines. - Strong analytical mindset and attention to detail. - Effective communication and collaboration across technical and commercial teams. **Required Education & Certifications** - Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related STEM field. - (Optional) Relevant certifications such as AWS Certified Developer or Cloud Practitioner.

London, United kingdom

On site

Fresher

13-11-2025