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CAREERS - Students
Establish your career with CCI
We believe in investing in the development of junior talent. We offer internships for students and rotational programs for recent graduates to gain valuable expertise, experience, and exposure to a variety of commercial and support functions.
At CCI, you develop skills that deliver real impact. We value fresh perspectives and smart ideas that will help us achieve CCI's vision to address society's demand for sustainable and reliable energy that powers economic growth and development.
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Every successful career begins with a strong foundation
Mentorship & Development
Develop your professional and personal skills through our tailored junior leadership program while working alongside seasoned industry experts across all departments.
Collaboration
Thrive in a fast-paced and team-driven environment with opportunities to learn from internal subject matter experts. Participate in dynamic projects across teams through the various rotations in the program.
Industry Expertise
Gain industry insights and fast track your development by working alongside the brightest minds in the industry, attending learning workshops, participating in training sessions, and more.
Fast Track Your Career
Engage in cutting-edge work at an industry-leading company, while enjoying the benefits of a flat organization with exposure to senior leaders early in your career. CCI provides an exceptional opportunity to cultivate professional leadership skills.
COMMODITIES TRADING ANALYST PROGRAM
Rotational Program & Internship
Our two-year Commodities Trading Analyst Program is designed to identify commercially focused talent and develop them into future risk takers at CCI. We are looking for candidates who are passionate about the commodities markets and enjoy analyzing data to make investment decisions. Program participants will gain exposure to risk management, financial and/or physical trading, depending on their location. The program is offered in our London office for the European program, and in both Houston, TX, and Stamford, CT, for the US program.
General Responsibilities Include:
Analyze markets to identify trading opportunities and assess associated risks
Design and develop models to analyze economic data, market fundamentals, and forecast prices
Research and develop statistical analyses of key risk factors
Identify pricing trends, patterns and market dislocations
Formulate trade ideas with a strong focus on disciplined risk management
Beck-test strategies to validate effectiveness prior to production execution
Review research reports and articles that examine recent developments in the energy markets
Our Summer Internship Program offers participants hands-on exposure to both physical and financial commodity trading, with a strong focus on risk and technology. Interns will either rotate across two different trading desks for five weeks, or spend the full ten weeks with a single desk. At the end of the program, CCI may extend an offer of employment to join our Commodities Trading Analyst Program, or an individual desk may offer a direct full-time role.
We look for candidates who are passionate about financial and commodities markets, with strong analytical and technical skills. Ideal candidates should be pursuing a Bachelor’s or Master’s degree in Economics, Mathematics, Engineering, Finance, Statistics, Business, Computer Science, Physics, or a related field.
US campus recruitment starts in early August with application deadlines in early September.
UK campus recruitment also starts in early August with application deadlines in early October.
At Castleton Commodities International (CCI), we are redefining how data and technology shape the future of energy trading. Our Data Science & Technology team is at the forefront of this transformation, developing systems and innovative tools that empower our front-office teams to better understand market dynamics, forecast prices, and manage risk.
Our commitment to excellence is reflected in a robust, modern, open-source technology stack, empowering us to solve complex, high-impact challenges at scale. From cloud-native infrastructure to machine learning platforms, real-time analytics, and proprietary libraries and APIs, we are passionate about using technology to drive innovation and create a competitive edge in global energy commodity trading and investing. Interns will gain direct exposure to our commercial investment teams, offering a unique opportunity to see how cutting-edge technology drives strategy and performance in energy markets.
As a Data Science & Technology Intern, you will contribute to projects that directly support commercial decision-making and technology advancement. Depending on your focus, our internship programs are offered across multiple technical tracks:
Software Engineering – Design, develop, and deploy real-time front-office tools in Python, including quantitative analysis, models, APIs, and automated workflows
Machine Learning – Analyze time-series data across market fundamentals in the Power, Natural Gas, and Oil sectors, helping to identify key supply and demand drivers and build predictive models
GenAI – Collaborate on the design of multi-agent systems where specialized agents work together to solve complex, cross-domain problems
Data Engineering – Develop data pipelines and ETL processes to structure, normalize, and standardize data in Snowflake, our core SQL / relational data warehouse
We are looking for students who are passionate about technology and excited to explore the intersection of energy markets and data analytics. Ideal candidates will have a strong foundation in programming, particularly in Python and/or SQL, and are currently pursuing a Bachelor’s, Master’s, or Ph.D. in Computer Science, Management Information Systems, Mathematics, Physics, Economics, Statistics, or a related field. Intellectual curiosity, a problem-solving mindset, and a desire to work in a fast-paced, data driven environment are essential.
The European program is based in our London office, and the US program operates from offices in Houston, Stamford, and New York City.
Campus recruitment for internships starts in early August with application deadlines in mid-September.
The core objective of the Rotational Program is to identify and develop the next generation of leaders across Operations, Finance, and potentially within CCI’s commercial businesses. Throughout the program, Associates will have regular interaction with leaders across our Operations, Finance and our commercial businesses to gain a broad perspective on the industry. The program is offered in our London office for the European program, and in both Houston, TX, and Stamford, CT, for the US program.
This two-year rotational program offers exposure to a variety of support functions including: physical operations, settlements, trading operations, P&L, FP&A, corporate accounting, credit, tax, treasury, product control, and others, as well contribute to special projects tied to strategic initiatives for the organization.
Associates will participate in four different six-month rotations among these groups, gaining exposure to a fast-paced, data-driven environment within our Operations and Finance functions. Rotations will be matched based on where there are the best development and growth opportunities for each Associate.
Training throughout the program offers a comprehensive understanding of the energy industry, along with the development of essential technical skills. At any point during the two-year program, a group may extend an offer of employment to the Associate, and if they accept the offer, the Associate will exit the rotation program and transition into the offered full-time role.
The US Summer Internship is a ten-week program that offers a shortened version of one, or occasionally two, rotations from the full-time Merchant Operations & Finance Leadership Rotational Program.
We seek candidates who are forward thinking, solution-oriented, and passionate about launching their careers. Candidates should be pursuing a Bachelor’s or Master’s degree in Accounting, Business, Economics, Mathematics, Engineering, Finance, Statistics, Physics, or a related field.
US campus recruitment starts in early August with application deadlines in mid-September.
UK campus recruitment also starts in early August with application deadlines in mid-October.
All open CCI roles can be found on our website, under Opportunities. All applications must be submitted in Workday.
Due to a high volume of applications, we are unable to respond to all applicants. We will notify you via email if you are selected for a first-round interview. All applications statuses are available in Workday.
Yes; however, we strongly recommend you select the opportunity that interests you the most.
For those looking to intern or work full-time in the US: If you require sponsorship, you must be a student who is eligible for STEM OPT (36 months of OPT).
For those looking to intern in the UK: If you require sponsorship, you must be a student going to school in the UK, thus eligible for a student visa to work over the summer.
For those looking to work as a full-time graduate in the UK: We sponsor Skilled Worker visas.
Hear from students who joined CCI through one of our campus programs
What are the key things you learned from working at CCI?
“At CCI, I learned how to work and communicate with multiple teams across the company, and how to work with new members joining the team. I gained the opportunity to meet with people in various roles to get a better understanding of the natural gas trading business.
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What is the culture at CCI?
“My experience of CCI’s culture has been excellent. Our colleagues are self-starters and entrepreneurial individuals that are passionate about their work and excited to engage you in conversation, regardless of their seniority. This culture allows you to learn at a rapid pace and contribute to the trading floor at an early stage. The culture, alongside the prospect of working with some of the best minds in the industry, were major drivers for joining CCI.”
What is the culture at CCI?
“The culture at CCI is built around being your best professional self. It’s an inclusive environment that wants you to succeed and grow by giving you all the tools and resources you need. Being right on the trading floor gives you the opportunity to build connections in every department which is filled with the brightest people in the industry. ”
What is the culture at CCI?
“The culture at CCI is very supportive. You are given a good amount of responsibility from the beginning which makes the work very engaging. Some of the projects that I worked on involved modelling jet fuel and diesel flows into Europe based on arbitrage opportunities. It was very encouraging to see the projects I have worked on being used by traders. I would definitely recommend CCI to anyone who has an entrepreneurial mindset and is passionate about commodities.”
What is the culture at CCI?
“I would highly recommend other graduates join our rotational program. The company offers valuable opportunities for professional growth and development. The supportive and collaborative nature of the firm allows you to truly challenge yourself and create a meaningful impact in the company.”
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