Energy Transition Investments Intern – Europe

Castleton Commodities International; Greater London; On-site; GBP 28,000 - 41,000; Full time

Job summary

Castleton Commodities International in London is offering an energy-focused European Principal Investments internship. You will work alongside senior team members to originate deals, perform market research, and build financial models that inform real investment decisions.

You’ll gain end-to-end exposure across origination, valuation, due diligence, and portfolio management while supporting the investment committee with compelling materials. A hands-on, fast-paced environment awaits.

Qualifications

• Currently pursuing a degree in finance, economics, mathematics, engineering, or a related field; other disciplines considered with demonstrable corporate finance experience
• Target graduation between December 2027 and Summer 2028 (i.e.: Candidate must be available for full-time roles by end of September 2028)
• Strong financial modeling, analytical, and quantitative skills
• Clear and concise communication skills—written, verbal, and presentation
• High initiative, ownership mindset, and comfort working in a lean, fast-paced team
• Genuine interest in investing, the energy transition, and European power markets
• Prior experience in private equity, investment banking, or corporate finance is a plus, not a requirement
• Proficiency in a European language (e.g., French, German, or Spanish) is advantageous but not required.

Responsibilities

• Originate and execute investment opportunities across Europe
• Support the full investment lifecycle: market research, M&A valuation, due diligence, deal execution, financing/refinancing, and portfolio management
• Build and refine financial models to evaluate equity and debt opportunities, informing real investment decisions
• Prepare materials for investment committee and board approvals, pre- and post-investment
• Analyze complex financial, commercial, and power market data to develop and stress-test investment theses
• Track market trends, policy developments, and competitive dynamics to inform strategy
• Collaborate with trading, risk, legal, and operations to ensure timely and robust transaction execution
• Coordinate with external advisors such as consultants, lenders, legal, etc.
• Maintain and enhance internal databases and market intelligence

Skills

Financial modeling

Analytical skills

Communication skills

Initiative

Interest in energy transition

Team collaboration

Education

Pursuing finance/economics/maths/engineering degree

Graduation between Dec 2027 and Summer 2028

Job description

Castleton Commodities International in London is offering an energy-focused European Principal Investments internship. You will work alongside senior team members to originate deals, perform market research, and build financial models that inform real investment decisions.

You’ll gain end-to-end exposure across origination, valuation, due diligence, and portfolio management while supporting the investment committee with compelling materials. A hands-on, fast-paced environment awaits.